CN103381496A

CN103381496A - Compound positioning and cutting spiral cutter

Info

Publication number: CN103381496A
Application number: CN2012101460234A
Authority: CN
Inventors: 李仕清
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-05-03
Filing date: 2012-05-03
Publication date: 2013-11-06

Abstract

The invention provides a compound positioning and cutting spiral cutter, and mainly relates to a machine twist drill for machining. The spiral cutter is high in stability and heat radiating efficiency and long in service life and can be easily positioned when used for drilling and processing. The spiral cutter comprises a cutter head and is characterized in that the height relationship between an anti-crack slitting table or an efficient slitting table and an adjacent efficient slitting table on the inner side is defined, the included angle between a compound spiral cutting face and an adjacent compound positioning resolving table is greater than or equal to 90 degrees, a centering chamber and a rear cutting face of a drill tip are intersected to form an included angle of less than or equal to 120 degrees, or the height of the adjacent compound spiral cutting face is greater than or equal to 0.01 mm or smaller than four fifths of the thickness of discharged chips, or less than or equal to the height of the product of 9 times of the cutting feed amount, or the width of the anti-crack slitting table is greater than 0.6 mm or less than or equal to one third of the diameter of the cutter, or a spiral groove is formed in the compound spiral cutting face.

Description

The helical tooth blade of combined positioning cutting

Technical field:

The present invention relates to a kind of helical tooth blade of combined positioning cutting, the helical tooth blade of this combined positioning cutting is used for drilling machine processing and pincers worker maintenance.

Background technology:

at present, the fluted drill that uses in machining is by chisel edge, cutting edge, the screw pair sword, side edge consists of, cutting edge and secondary sword roughly are single structure, adjective-centre structure is poor, these fluted drill utmost points are not durable, especially when cutting the higher workpiece of hardness, (Milling) easily produce a large amount of heat boring, the lower hardness that causes cutter head, cause the wearing and tearing of cutter head, also there is the defective of frangibility in this cutter head simultaneously, and, symmetrical due to the cutting edge on cutter head both sides when the work, and cutting output is only generally that tens of microns are to 1 millimeter, so be difficult to grasp angle and height when artificial reconditioning, in addition, the precision in these fluted drills and the hole that processes is defective, waste product very easily appears, simultaneously, also exist when the harder workpiece of processing and cutting edge is collapsed tooth or cutter head break that beating lives causes the problem of industrial accident.

Summary of the invention:

The present invention is exactly in view of the above-mentioned problems and proposes, and take helical tooth blade that a kind of novel combined positioning cutting is provided as purpose, this kind cutter radiating efficiency is high, and intensity is large, and the life-span is long, and adds in drilling and easily locate man-hour.

For achieving the above object, the present invention adopts following technical proposals:

the helical tooth blade of combined positioning cutting, the machine that relates generally to for machining adds fluted drill, comprise cutterhead, cutterhead is provided with a plurality of spiral bar integratedly, the tooth shape towards the cutting direction exterior side of each spiral bar becomes the screw pair cutting edge, the face towards direction of rotation at screw pair cutting edge place forms spiral cutting face, the face of the axial forward end rear side of spiral cutting face forms rear cutting face, spiral cutting face and the crossing cutting edge that is formed with in rear cutting face, it is characterized in that: on the helical tooth blade of combined positioning cutting, integratedly, or connect and carry out with forming as one the setting of following technical scheme, the inboard towards the spiral cutting face of direction of rotation at this screw pair cutting edge, the composite screw cutting face of one-level inboard at least that is provided with through arc convex or oblique raised step shape projection, or the extension that erects of arc convex or oblique projection, be formed with the compound location of intersecting with the composite screw cutting face of inboard and decompose platform, the spiral cutting face of arranged in step shape is for efficiently cutting platform, the cutting edge of arranged in step shape or spiral cutting sword are efficient minute cutting blade, the outermost platform of efficiently cutting is that cracking resistance is cut platform, outermost efficient minute cutting blade is that cracking resistance is divided cutting blade, or arc convex or oblique projection extend to front end vertically, or extend on cutting edge or spiral cutting sword to the rear portion arc, be formed with the recessed sword of side or skew back sword, or cracking resistance is cut platform, or efficiently cut platform and compound decomposition platform and intersect, be formed with the angle more than or equal to 90 °, or arc convex or oblique projection extend to vertically front end or extend on cutting edge or spiral cutting sword to the rear portion arc, be formed with the recessed sword of side or skew back sword, with stair-stepping cutting edge or spiral cutting sword, or the center chisel edge of the apex point that arranges in center, cutterhead top or the two ends of sharp sword, respectively form a centering fillet surface through chamfering, crossing being formed with in the rear cutting face of centering chamfer face and apex point is less than or equal to the angle of 120 °, form a chisel edge between the centering chamfer face of both sides or without the sharp sword of chisel edge, or the rear cutting face at centering chamfer face and apex point place is intersected and being formed with a centering minute cutting blade, the outside of centering minute cutting blade is location minute cutting blade, point sword or chisel edge, at least the compound location of both sides divides the sharp edge type of cutting blade and centering minute cutting blade and chisel edge or the nonreactive heart to become the cutting edge of S shape or anti-S shape, it is the S sword, or on the rear cutting face from apex point to outermost side edge incline direction, relatively depression is provided with Baltimore groove, or dovetail groove, or square groove, or del groove, or deep-slotted chip breaker, or shaped groove, or cutting face after planar shaped, or cutting face after notch cuttype, or the contextual definition that cracking resistance is cut platform or efficiently cut platform and the inboard adjacent height of efficiently cutting platform is, cracking resistance is cut platform or is efficiently cut platform and the height of efficiently cutting platform of adjacent inboard is that the depth of cut multiply by the product number, when work piece hardness or the higher and cutter of viscosity when larger, the cutting depth of cut is less, the product number that the depth of cut is taken advantage of is larger, when work piece hardness or the higher and cutter of viscosity hour, the cutting depth of cut is less, the product number that the depth of cut is taken advantage of is larger, when work piece hardness or the lower and cutter of viscosity when larger, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, when work piece hardness or the lower and cutter of viscosity hour, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, or cracking resistance is cut the height of combined cut face of platform and adjacent inboard for more than or equal to 0.01 millimeter, or less than 4/5ths of the thickness of the bits of discharging after this kind Tool in Cutting, or less than the height of the product number of 9 times of the cutting amount of feeding, or the cracking resistance width of cutting platform is for greater than 0.6 millimeter, or be less than or equal to 1/3rd of this tool diameter, the any one cutting way of above structure, or the formed combination sword of any combination of above cutting way arranges the helical tooth blade of formed combined positioning cutting on helical tooth blade.

the helical tooth blade of combined positioning cutting, the machine that relates generally to for machining adds fluted drill, comprise cutterhead, cutterhead is provided with a plurality of spiral bar integratedly, the tooth shape towards the cutting direction exterior side of each spiral bar becomes the screw pair cutting edge, the face towards direction of rotation at screw pair cutting edge place forms spiral cutting face, the face of the axial forward end rear side of spiral cutting face forms rear cutting face, spiral cutting face and the crossing cutting edge that is formed with in rear cutting face, on the helical tooth blade of combined positioning cutting, integratedly, or connect and carry out with forming as one the setting of following technical scheme, the inboard towards the spiral cutting face of direction of rotation at this screw pair cutting edge, the composite screw cutting face of one-level inboard at least that is provided with through arc convex or oblique raised step shape projection, or the extension that erects of arc convex or oblique projection, be formed with the compound location of intersecting with the composite screw cutting face of inboard and decompose platform, the spiral cutting face of arranged in step shape is for efficiently cutting platform, the cutting edge of arranged in step shape or spiral cutting sword are efficient minute cutting blade, the outermost platform of efficiently cutting is that cracking resistance is cut platform, outermost efficient minute cutting blade is that cracking resistance is divided cutting blade, or arc convex or oblique projection extend to front end vertically, or extend on cutting edge or spiral cutting sword to the rear portion arc, be formed with the recessed sword of side or skew back sword, or cracking resistance is cut platform, or efficiently cut platform and compound decomposition platform and intersect, be formed with the angle more than or equal to 90 °, or arc convex or oblique projection extend to vertically front end or extend on cutting edge or spiral cutting sword to the rear portion arc, be formed with the recessed sword of side or skew back sword, with stair-stepping cutting edge or spiral cutting sword, or the center chisel edge of the apex point that arranges in center, cutterhead top or the two ends of sharp sword, respectively form a centering fillet surface through chamfering, crossing being formed with in the rear cutting face of centering chamfer face and apex point is less than or equal to the angle of 120 °, form a chisel edge between the centering chamfer face of both sides or without the sharp sword of chisel edge, or the rear cutting face at centering chamfer face and apex point place is intersected and being formed with a centering minute cutting blade, the outside of centering minute cutting blade is location minute cutting blade, point sword or chisel edge, at least the compound location of both sides divides the sharp edge type of cutting blade and centering minute cutting blade and chisel edge or the nonreactive heart to become the cutting edge of S shape or anti-S shape, it is the S sword, or on the rear cutting face from apex point to outermost side edge incline direction, relatively depression is provided with Baltimore groove, or dovetail groove, or square groove, or del groove, or deep-slotted chip breaker, or shaped groove, or cutting face after planar shaped, or cutting face after notch cuttype, or the contextual definition that cracking resistance is cut platform or efficiently cut platform and the inboard adjacent height of efficiently cutting platform is, cracking resistance is cut platform or is efficiently cut platform and the height of efficiently cutting platform of adjacent inboard is that the depth of cut multiply by the product number, when work piece hardness or the higher and cutter of viscosity when larger, the cutting depth of cut is less, the product number that the depth of cut is taken advantage of is larger, when work piece hardness or the higher and cutter of viscosity hour, the cutting depth of cut is less, the product number that the depth of cut is taken advantage of is larger, when work piece hardness or the lower and cutter of viscosity when larger, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, when work piece hardness or the lower and cutter of viscosity hour, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, or cracking resistance is cut the height of combined cut face of platform and adjacent inboard for more than or equal to 0.01 millimeter, or less than 4/5ths of the thickness of the bits of discharging after this kind Tool in Cutting, or less than the height of the product number of 9 times of the cutting amount of feeding, or the cracking resistance width of cutting platform is for greater than 0.6 millimeter, or be less than or equal to 1/3rd of this tool diameter, it is characterized in that: or at the spiral cutting face of the axial forward end of helical tooth blade, intersect with rear cutting face, the corner that the cutting edge that forms and screw pair cutting edge intersect, the part arranges cracking resistance and cuts platform, and be formed with respectively cracking resistance and cut platform, the cutting edge that intersects with rear cutting face, or local screw pair cutting edge is that cracking resistance is divided cutting blade, the any one cutting way of above structure, or the formed combination sword of any combination of above cutting way arranges the helical tooth blade of formed combined positioning cutting on helical tooth blade.

the helical tooth blade of combined positioning cutting, the machine that relates generally to for machining adds fluted drill, comprise cutterhead, cutterhead is provided with a plurality of spiral bar integratedly, the tooth shape towards the cutting direction exterior side of each spiral bar becomes the screw pair cutting edge, the face towards direction of rotation at screw pair cutting edge place forms spiral cutting face, the face of the axial forward end rear side of spiral cutting face forms rear cutting face, spiral cutting face and the crossing cutting edge that is formed with in rear cutting face, on the helical tooth blade of combined positioning cutting, integratedly, or connect and carry out with forming as one the setting of following technical scheme, the inboard towards the spiral cutting face of direction of rotation at this screw pair cutting edge, the composite screw cutting face of one-level inboard at least that is provided with through arc convex or oblique raised step shape projection, or the extension that erects of arc convex or oblique projection, be formed with the compound location of intersecting with the composite screw cutting face of inboard and decompose platform, the spiral cutting face of arranged in step shape is for efficiently cutting platform, the cutting edge of arranged in step shape or spiral cutting sword are efficient minute cutting blade, the outermost platform of efficiently cutting is that cracking resistance is cut platform, outermost efficient minute cutting blade is that cracking resistance is divided cutting blade, or arc convex or oblique projection extend to front end vertically, or extend on cutting edge or spiral cutting sword to the rear portion arc, be formed with the recessed sword of side or skew back sword, or cracking resistance is cut platform, or efficiently cut platform and compound decomposition platform and intersect, be formed with the angle more than or equal to 90 °, or arc convex or oblique projection extend to vertically front end or extend on cutting edge or spiral cutting sword to the rear portion arc, be formed with the recessed sword of side or skew back sword, with stair-stepping cutting edge or spiral cutting sword, or the center chisel edge of the apex point that arranges in center, cutterhead top or the two ends of sharp sword, respectively form a centering fillet surface through chamfering, crossing being formed with in the rear cutting face of centering chamfer face and apex point is less than or equal to the angle of 120 °, form a chisel edge between the centering chamfer face of both sides or without the sharp sword of chisel edge, or the rear cutting face at centering chamfer face and apex point place is intersected and being formed with a centering minute cutting blade, the outside of centering minute cutting blade is location minute cutting blade, point sword or chisel edge, at least the compound location of both sides divides the sharp edge type of cutting blade and centering minute cutting blade and chisel edge or the nonreactive heart to become the cutting edge of S shape or anti-S shape, it is the S sword, or on the rear cutting face from apex point to outermost side edge incline direction, relatively depression is provided with Baltimore groove, or dovetail groove, or square groove, or del groove, or deep-slotted chip breaker, or shaped groove, or cutting face after planar shaped, or cutting face after notch cuttype, or the contextual definition that cracking resistance is cut platform or efficiently cut platform and the inboard adjacent height of efficiently cutting platform is, cracking resistance is cut platform or is efficiently cut platform and the height of efficiently cutting platform of adjacent inboard is that the depth of cut multiply by the product number, when work piece hardness or the higher and cutter of viscosity when larger, the cutting depth of cut is less, the product number that the depth of cut is taken advantage of is larger, when work piece hardness or the higher and cutter of viscosity hour, the cutting depth of cut is less, the product number that the depth of cut is taken advantage of is larger, when work piece hardness or the lower and cutter of viscosity when larger, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, when work piece hardness or the lower and cutter of viscosity hour, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, or cracking resistance is cut the height of combined cut face of platform and adjacent inboard for more than or equal to 0.01 millimeter, or less than 4/5ths of the thickness of the bits of discharging after this kind Tool in Cutting, or less than the height of the product number of 9 times of the cutting amount of feeding, or the cracking resistance width of cutting platform is for greater than 0.6 millimeter, or be less than or equal to 1/3rd of this tool diameter, or at the spiral cutting face of the axial forward end of helical tooth blade, intersect with rear cutting face, the corner that the cutting edge that forms and screw pair cutting edge intersect, the part arranges cracking resistance and cuts platform, and be formed with respectively cracking resistance and cut platform, the cutting edge that intersects with rear cutting face, or local screw pair cutting edge is that cracking resistance is divided cutting blade, it is characterized in that: composite screw arranges one-level helical groove at least on the cutting face, the any one cutting way of above structure, or the formed combination sword of any combination of above cutting way arranges the helical tooth blade of formed combined positioning cutting on helical tooth blade.

the helical tooth blade of combined positioning cutting, the machine that relates generally to for machining adds fluted drill, comprise cutterhead, cutterhead is provided with a plurality of spiral bar integratedly, the tooth shape towards the cutting direction exterior side of each spiral bar becomes the screw pair cutting edge, the face towards direction of rotation at screw pair cutting edge place forms spiral cutting face, the face of the axial forward end rear side of spiral cutting face forms rear cutting face, spiral cutting face and the crossing cutting edge that is formed with in rear cutting face, on the helical tooth blade of combined positioning cutting, integratedly, or connect and carry out with forming as one the setting of following technical scheme, the inboard towards the spiral cutting face of direction of rotation at this screw pair cutting edge, the composite screw cutting face of one-level inboard at least that is provided with through arc convex or oblique raised step shape projection, or the extension that erects of arc convex or oblique projection, be formed with the compound location of intersecting with the composite screw cutting face of inboard and decompose platform, the spiral cutting face of arranged in step shape is for efficiently cutting platform, the cutting edge of arranged in step shape or spiral cutting sword are efficient minute cutting blade, the outermost platform of efficiently cutting is that cracking resistance is cut platform, outermost efficient minute cutting blade is that cracking resistance is divided cutting blade, or arc convex or oblique projection extend to front end vertically, or extend on cutting edge or spiral cutting sword to the rear portion arc, be formed with the recessed sword of side or skew back sword, or cracking resistance is cut platform, or efficiently cut platform and compound decomposition platform and intersect, be formed with the angle more than or equal to 90 °, or arc convex or oblique projection extend to vertically front end or extend on cutting edge or spiral cutting sword to the rear portion arc, be formed with the recessed sword of side or skew back sword, with stair-stepping cutting edge or spiral cutting sword, or the center chisel edge of the apex point that arranges in center, cutterhead top or the two ends of sharp sword, respectively form a centering fillet surface through chamfering, crossing being formed with in the rear cutting face of centering chamfer face and apex point is less than or equal to the angle of 120 °, form a chisel edge between the centering chamfer face of both sides or without the sharp sword of chisel edge, or the rear cutting face at centering chamfer face and apex point place is intersected and being formed with a centering minute cutting blade, the outside of centering minute cutting blade is location minute cutting blade, point sword or chisel edge, at least the compound location of both sides divides the sharp edge type of cutting blade and centering minute cutting blade and chisel edge or the nonreactive heart to become the cutting edge of S shape or anti-S shape, it is the S sword, or on the rear cutting face from apex point to outermost side edge incline direction, relatively depression is provided with Baltimore groove, or dovetail groove, or square groove, or del groove, or deep-slotted chip breaker, or shaped groove, or cutting face after planar shaped, or cutting face after notch cuttype, or the contextual definition that cracking resistance is cut platform or efficiently cut platform and the inboard adjacent height of efficiently cutting platform is, cracking resistance is cut platform or is efficiently cut platform and the height of efficiently cutting platform of adjacent inboard is that the depth of cut multiply by the product number, when work piece hardness or the higher and cutter of viscosity when larger, the cutting depth of cut is less, the product number that the depth of cut is taken advantage of is larger, when work piece hardness or the higher and cutter of viscosity hour, the cutting depth of cut is less, the product number that the depth of cut is taken advantage of is larger, when work piece hardness or the lower and cutter of viscosity when larger, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, when work piece hardness or the lower and cutter of viscosity hour, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, or cracking resistance is cut the height of combined cut face of platform and adjacent inboard for more than or equal to 0.01 millimeter, or less than 4/5ths of the thickness of the bits of discharging after this kind Tool in Cutting, or less than the height of the product number of 9 times of the cutting amount of feeding, or the cracking resistance width of cutting platform is for greater than 0.6 millimeter, or be less than or equal to 1/3rd of this tool diameter, or at the spiral cutting face of the axial forward end of helical tooth blade, intersect with rear cutting face, the corner that the cutting edge that forms and screw pair cutting edge intersect, the part arranges cracking resistance and cuts platform, and be formed with respectively cracking resistance and cut platform, the cutting edge that intersects with rear cutting face, or local screw pair cutting edge is that cracking resistance is divided cutting blade, at least one-level helical groove is set on the composite screw cutting face, it is characterized in that: in the helical tooth blade front central of combined positioning cutting, or the compound location of both sides divides cutting blade at the axial centre place, be formed with 1 chisel edge, at efficient minute cutting blade, or compound location is divided on cutting blade, be formed with 2 straight sword or 3 composite straight swords, or the 4 ladder swords that reduce gradually in the spiral bar outside height, or 5 composite step sword, on cutting edge or minute cutting blade, 6 recess swords or 7 compound recess swords are set, or the shaped form cutting edge is 8 curved edges, or 9 compound curved sword, or with cutterhead longitudinal center line or screw pair cutting edge, 10 oblique swords of angle are arranged, or with oblique sword, 11 composite inclined swords of certain angle or arranged in step shape are arranged, or 1 chisel edge, or 2 flat sword, or 3 compound flat sword, or be formed with 4 ladder swords on the rear cutting face of the spiral cutting face of arranged in step shape or arranged in step shape, or 5 composite step sword, or divide cutting blade in compound location, or efficiently divide at least one 6 recess sword or 7 compound recess swords are set on cutting blade, or arc convex, or oblique projection, or efficiently cut platform, or efficiently cut platform and extend and intersect in the cutting face backward, be formed with 8 curved edges, or 9 compound curved sword, or 10 oblique sword, or 11 in the composite inclined sword, or 12 step drill, or the structure of 13 drilling and tapping one, the any one cutting way of above structure, or the formed combination sword of any combination of above cutting way arranges the helical tooth blade of formed combined positioning cutting on helical tooth blade.

Preferably, the sharp edge type of the cutting edge on the stair-stepping rear cutting face of the two-stage at least of described spiral bar and fillet surface, centering minute cutting blade and chisel edge or the nonreactive heart becomes the cutting edge of S shape or anti-S shape, i.e. S sword.

Preferably, on the apex point of each spiral bar of the helical tooth blade of described combined positioning cutting, from the position of tool axis on toward the outer side the direction of screw pair cutting edge, be formed with one-level spiral cutting face at least protrudingly, at least platform is cut in the compound location of one-level spiral, and one-level screw pair cutting edge at least.

Preferably, cutting edge on the stair-stepping rear cutting face of the two-stage at least of described spiral bar and fillet surface or a centering minute cutting blade arrange at least one recess sword, the recess sword is opening, and cutting face or cutting face are extended and are amplified the groove that shape distributes backward, and the sharp edge type of cutting edge, centering minute cutting blade and chisel edge or the nonreactive heart becomes the cutting edge of S shape or anti-S shape, i.e. S sword.

Preferably, on the cutterhead of described cutter to run through this cutterhead and to be folded with alloy cutter head with respect to the centrosymmetric mode of end face, the sharp edge type of the cutting edge of the both sides at least of described alloy cutter head and centering minute cutting blade and chisel edge or the nonreactive heart becomes S sword or anti-S sword, alloy cutter head begins to be formed with one or more levels step in the mode that reduces highly gradually laterally from the cutterhead axial centre, and is formed with stair-stepping cutting edge on rear cutting face or cutting face.

Preferably, cutting edge or a centering minute cutting blade on the cutting face of described spiral bar or rear cutting face and fillet surface arrange at least one recess sword or compound recess sword, and recess sword or compound recess sword are opening cutting face or cutting face are extended or amplified shape and extend groove or the compound groove that distributes backward.

Preferably, be the multiaspect such as inverted trapezoidal or square or arc chamber shape at the recess sword of described helical tooth blade.

Preferably, on the cutterhead of described cutter to run through this cutterhead and to be provided with alloy cutter head or alloy cutter head with respect to the centrosymmetric mode of end face, the sharp edge type of the cutting edge of the both sides at least of described alloy cutter head or alloy cutter head and centering minute cutting blade and chisel edge or the nonreactive heart becomes S sword or anti-S sword, alloy cutter head or alloy cutter head begin to be formed with one or more levels step in the mode that reduces highly gradually laterally from the cutterhead axial centre, and be formed with stair-stepping cutting edge on rear cutting face or cutting face, or recess sword, or compound recess sword.

Preferably, the helical tooth blade of described combined positioning cutting, it is characterized in that: cutting edge or a centering minute cutting blade on the cutting face of described spiral bar or rear cutting face and fillet surface arrange at least one recess sword, the recess sword is opening, and cutting face or cutting face are extended and are amplified the groove that shape distributes backward, and cutting edge, centering minute cutting blade and chisel edge form the cutting edge of S shape or anti-S shape, i.e. S sword.

Preferably, be formed with at least one groove and front cutting face or cracking resistance and cut platform or spiral compound location and cut platform and intersect and be formed with at least one recess sword on the rear cutting face of described cutter, the bottom shape of the bottom shape of groove and recess sword is trapezoidal, triangle or arc or other polyhedron shapes.

Preferably, at the helical tooth blade of described combined positioning cutting, cutting face or spiral heat dissipation face or front cutting face and rear cutting face intersect and form at least one-level and divide cutting blade or a location minute cutting blade.

Preferably, location minute cutting blade and extend to form spiral compound location to drillstock and cut platform is arranged on the cutting edge of the projection of the helical tooth blade of described combined positioning cutting or apex point.

Preferably, be the Integral alloy cutter head at described helical tooth blade, the sharp edge type of the cutting edge of the both sides at least of described alloy cutter head and centering minute cutting blade and chisel edge or the nonreactive heart becomes S sword or anti-S sword, alloy cutter head begins to be formed with one or more levels step in the mode that reduces highly gradually laterally from the cutterhead axial centre, and be formed with stair-stepping cutting edge on rear cutting face or cutting face, or recess sword, or compound recess sword.

Preferably, be formed with an one-level location minute cutting blade at least on the apex point of the helical tooth blade of described combined positioning cutting, platform and one-level screw pair cutting edge are at least cut in the compound location of one-level spiral at least.

Preferably, the cutting edge at the helical tooth blade of described combined positioning cutting is to be formed with minute cutting blade and little side edge on straight sword or recess sword or inverted trapezoidal sword or triangular edge or square opening sword.

Preferably, the cutting edge that intersects at the helical tooth blade outermost of described combined positioning cutting and screw pair cutting edge or the angle of minute cutting blade and screw pair cutting edge are acute angle or right angle or obtuse angle.

Preferably, connect cutter tip in the front portion of the spiral bar of the helical tooth blade of described combined positioning cutting.

Preferably, be formed with the centering screw pair sword of one-level combined positioning cutting at least on the front cutting face of described compound location centering minute cutting blade.

Preferably, be formed with the screw pair sword of the compound location of one-level combined cut at least on spiral front cutting face.Preferably, in the centering screw pair sword outside of the helical tooth blade of described combined positioning cutting to being formed with groove or plane between side edge.

Beneficial effect:

cut platform or efficiently cut platform the definition of the relation of the height of efficiently cutting platform adjacent with the inboard by cracking resistance, cracking resistance is cut platform or is efficiently cut platform and the height of efficiently cutting platform of adjacent inboard is that the depth of cut multiply by the product number, when work piece hardness or the higher and cutter of viscosity when larger, the cutting depth of cut is less, the product number that the depth of cut is taken advantage of is larger, when work piece hardness or the higher and cutter of viscosity hour, the cutting depth of cut is less, the product number that the depth of cut is taken advantage of is larger, when work piece hardness or the lower and cutter of viscosity when larger, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, when work piece hardness or the lower and cutter of viscosity hour, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, realized the numerical value rule of the cutter that high efficiency centering helical tooth blade suitability for industrialized production is required, detailed restriction by angle and data, further successful realization more high-precision numerical value definite, and 1 flat sword or compound flat sword that cutting edge arranges, or the 2 ladder swords or the composite step sword that reduce highly gradually laterally, or 3 recess sword, or the 4 compound recess swords that overlap with the recess sword, or with cutterhead longitudinal center line or screw pair cutting edge, 5 oblique swords of angle are arranged, or with oblique sword, 6 composite inclined swords of certain angle or arranged in step shape are arranged, various cutting edge or combination sword had both further improved efficient, enlarged again the scope of application of the helical tooth blade of combined positioning cutting.

Description of drawings:

Technical scheme of the present invention and advantage will be described in detail in conjunction with the drawings, in this accompanying drawing:

Fig. 1 is the schematic diagram of helical tooth blade of the combined positioning cutting of the first embodiment of the present invention.

Fig. 2 is the schematic diagram of helical tooth blade of the combined positioning cutting of the second embodiment of the present invention.

Fig. 3 is the schematic diagram of helical tooth blade of the combined positioning cutting of the 3rd embodiment of the present invention.

Fig. 4 is the schematic diagram of helical tooth blade of the combined positioning cutting of the 4th embodiment of the present invention.

Fig. 5 is the schematic diagram of helical tooth blade of the combined positioning cutting of the 5th embodiment of the present invention.

Fig. 6 is the schematic diagram of helical tooth blade of the combined positioning cutting of the 6th embodiment of the present invention.

Fig. 7 is the schematic diagram of helical tooth blade of the combined positioning cutting of the 7th embodiment of the present invention.

Fig. 8 is the schematic diagram of helical tooth blade of the combined positioning cutting of the 8th embodiment of the present invention.

Fig. 9 is the schematic diagram of helical tooth blade of the combined positioning cutting of the 9th embodiment of the present invention.

The specific embodiment:

Explain the preferred embodiment of the helical tooth blade of combined positioning cutting of the present invention below in conjunction with accompanying drawing, mainly describe as an example of cutter with two spiral bar example in embodiment 1-4.

Embodiment 1

as shown in Figure 1, the helical tooth blade of the combined positioning cutting of the first embodiment of the present invention, the machine that relates generally to for machining adds fluted drill, comprise cutterhead, cutterhead is provided with a plurality of spiral bar 2 integratedly, the tooth shape towards the cutting direction exterior side of each spiral bar becomes screw pair cutting edge 14, the face towards direction of rotation at screw pair cutting edge 14 places forms spiral cutting face 7, the face of the axial forward end rear side of spiral cutting face 7 forms rear cutting face 4, spiral cutting face 7 and the crossing cutting edge 21 that is formed with in rear cutting face 4, on the helical tooth blade of combined positioning cutting, integratedly, or connect and carry out with forming as one the setting of following technical scheme, the inboard towards the spiral cutting face 7 of direction of rotation at this screw pair cutting edge 14, the composite screw cutting face that is provided with one-level inboard at least 3 through arc convex or oblique protruding 19 stepped projections, or arc convex or oblique protruding 19 extensions that erect, be formed with the compound location of intersecting with the composite screw cutting face 3 of inboard and decompose platform 6, the spiral cutting face of arranged in step shape is for efficiently cutting platform, the cutting edge 21 of arranged in step shape, 10 or spiral cutting sword 14, 15 is efficient minute cutting blade, the outermost platform of efficiently cutting is that cracking resistance is cut platform 7, outermost efficient minute cutting blade is that cracking resistance is divided cutting blade 14, 21, or arc convex or oblique protruding 19 extends to front end vertically, or extend on cutting edge or spiral cutting sword to the rear portion arc, be formed with the recessed sword of side or skew back sword 20, or cracking resistance is cut platform, or efficiently cut platform and compound decomposition platform and intersect 6, be formed with the angle more than or equal to 90 °, with stair-stepping

cutting edge

21, 10 or spiral cutting sword 14, 15, or the center chisel edge of the apex point that arranges in center, cutterhead top or the two ends of sharp sword 9, respectively form a centering fillet surface 13 through chamfering, centering chamfer face 13 is less than or equal to the angle of 120 ° with crossing being formed with in rear cutting face 4 of apex point, 13, the centering chamfer face of both sides forms chisel edges or without the sharp sword 9 of chisel edge, or centering chamfer face 4 intersects with the rear cutting face at apex point place and being formed with a centering minute cutting blade 12, the outside of centering minute cutting blade 12 is location minute cutting blade 10, point sword or chisel edge 9, at least the compound location of both sides divides the sharp sword 9 of cutting blade 10 and centering minute cutting blade 12 and chisel edge or the nonreactive heart to form the cutting edge of S shape or anti-S shape, it is the S sword, or on the rear cutting face 4 from apex point to outermost side edge incline direction, relatively depression is provided with Baltimore groove, or dovetail groove, or square groove, or del groove, or deep-slotted chip breaker, or shaped groove, or cutting face after planar shaped, or cutting face after notch cuttype, or the contextual definition that cracking resistance is cut platform or efficiently cut platform and the inboard adjacent height h that efficiently cuts platform is, cracking resistance is cut platform or is efficiently cut platform and the height of efficiently cutting platform of adjacent inboard is that the depth of cut multiply by the product number, when work piece hardness or the higher and cutter of viscosity when larger, the cutting depth of cut is less, the product number that the depth of cut is taken advantage of is larger, when work piece hardness or the higher and cutter of viscosity hour, the cutting depth of cut is less, the product number that the depth of cut is taken advantage of is larger, when work piece hardness or the lower and cutter of viscosity when larger, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, when work piece hardness or the lower and cutter of viscosity hour, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, or cracking resistance is cut the height h of combined cut face of platform and adjacent inboard for more than or equal to 0.01 millimeter, or less than 4/5ths of the thickness of the bits of discharging after this kind Tool in Cutting, or less than the height of the product number of 9 times of the cutting amount of feeding, or the cracking resistance width a that cuts platform is for greater than 0.6 millimeter, or be less than or equal to any one of 1/3rd above structures of this tool diameter or the helical tooth blade of the formed combined positioning cutting of any combination.

according to said structure, provide the cracking resistance that arranges on cutterhead 1 and cut width or the height of platform, and the above data of angle are going out through practice, as surpassing this scope, will have a greatly reduced quality in efficient or service life, this kind cutter can decompose the cutting force of cutting edge, reduce the frictional strength of cutting edge, especially the frictional force frictional heat generation that has reduced screw pair cutting face 5 reduces, can also increase simultaneously the area of dissipation of cutterhead, reduce the cutterhead temperature, decompose cutting edge stressed of flimsy outer end of cutter, extended cutter life, and keep high strength in process always.

Embodiment 2

as shown in Figure 2, the helical tooth blade of the combined positioning cutting of the second embodiment of the present invention, on the basis of the first embodiment, present embodiment comprises cutterhead 1, cutterhead 1 is provided with two spiral bar 2 integratedly, the face towards cutting direction of spiral bar 2 is spiral cutting face 3, the top rear side of spiral cutting face 3 is rear cutting face 4, outermost of spiral bar 2 is spiral screw pair cutting face 5, spiral cutting face intersects with screw pair cutting face 5 and is formed with front cutting edges 14, the crossing side edge that is formed with in screw pair cutting face and rear cutting face, the outside of spiral cutting face is with to the inboard stair-stepping projection of axial centre, the screw pair cutting face that is formed with one-level projection at least is that platform 6 is decomposed in compound location, at least the spiral cutting face 3 of one-level projection is that platform 3 is cut in composite screw location, arc convex or oblique protruding 19, outermost one-level spiral cutting face is for efficiently cutting platform 7, the inboard is formed with at least the spiral cutting face 3 of one-level step arrangement and namely efficiently cuts platform 3, the composite screw location of projection is cut platform 3 and compound location and is decomposed platform 6 and intersect and be formed with compound secondary sword 15, spiral cutting face 3 or efficiently cut platform 3 and compound location and decompose platform 6 and intersect and be formed with arc convex or oblique protruding 19, arc convex or oblique protruding 19 has extended to form compound location decomposition platform 6 to efficiently cutting platform 3, be formed with from chisel edge or sharp sword 9 stage portion 8 that reduces highly gradually to two outsides on rear cutting face 4, efficiently cut platform 7 and arc convex or oblique protruding 19, decompose platform 6 with compound location, cut platform 3 with composite screw location and be formed with ladder sword 11 on stair-stepping rear cutting face 4 and stage portion 8, efficient

minute cutting blade

21, 19 decompose platform 6 with compound location intersects, be formed with the angle more than or equal to 90 °, near center, cutterhead top, it is the top that cutting blade 10 is divided in compound location, efficiently cutting platform and intersection, rear cutting face formation one fillet surface 13 after cutting or grinding flute, with dwindle after chisel edge or sharp sword 9 and and compound location divide 10 of cutting blades to be formed with a centering minute cutting blade 12, efficiently cut platform 3 and centering minute cutting blade 12 and chisel edge or sharp sword 9 and form S sword or anti-S sword, the sharp sword 9 of the chisel edge of every side or the nonreactive heart, and the compound location of this side divides 10 of cutting blades that a chamfering, cutting bevel 13 is set, chamfering, cutting bevel 13 intersects with rear cutting face 4, be formed with and be less than or equal to the angle of 120 °, the spiral cutting face 19 of efficiently cutting platform 7 and adjacent inboard is namely efficiently cut height h between platform 3 for more than or equal to 0.01 millimeter, or less than 4/5ths of the thickness of the bits of discharging after this kind Tool in Cutting, or less than the height of the product number of 9 times of the cutting amount of feeding, or the cracking resistance width of cutting platform is for greater than 0.6 millimeter, be less than or equal on 1/3rd or composite screw cutting face of this tool diameter a helical groove 22 is set, divide in compound location and be formed with recess sword 17 on cutting blade 10, or the height h that efficiently cuts platform 3 that efficiently cuts platform 7 and adjacent inboard is for more than or equal to 0.01 millimeter, or less than 4/5ths of the thickness of the bits of discharging after this kind Tool in Cutting, or less than the height of the product number of 9 times of the cutting amount of feeding, or the cracking resistance width h ' that cuts platform is for greater than 0.6 millimeter, be less than or equal to 1/3rd of this tool diameter, efficiently cut platform 7 or efficiently cut platform 3 and intersect with compound location decomposition platform 6 through arc convex or oblique protruding 19, be formed with the angle a more than or equal to 90 °, at least one-level helical groove 22 is set efficiently cutting on platform, intersect with rear cutting face and be formed with the recess sword.

Embodiment 3

As shown in Figure 3, the helical tooth blade of the combined positioning cutting of the 3rd embodiment of the present invention, first---on the basis of two embodiments, divide in stair-stepping compound location at least one recess sword 17 is set on cutting blade 10, be opening and extend the groove 16 that amplifies the shape distribution in cutting face 4 backward, be formed with from chisel edge or sharp sword 9 stage portion 8 that reduces highly gradually to two outsides on rear cutting face 4, efficiently cut platform 10 and be formed with ladder sword 11 on stair-stepping cutting face, stage portion 8 and efficiently cut 10 of platforms and have a centering minute cutting blade 12 to extend to form fillet surface 13 downwards.

according to said structure, after being provided with of the center of cutterhead 1 top bump cutting face 4 and stage portion 8 therefore this cutter have good stability, again owing to efficiently cutting platform 7 and make this cutter in when cutting strengthen knowing clearly outer end cutting edge strength of cutterhead 1 being provided with on spiral cutting face 3, efficiently cut platform 10 and centering minute cutting blade 12 and chisel edge or sharp sword 9 and form the center drag that the cutting edge of S shape or anti-S shape has effectively decomposed cutterhead 1, strengthened cutterhead 1 stability, compare with cutter head in the past, increased again a new compound secondary sword 15, can carry out work with two front cutting edges thus, thereby the cutting force that can decompose front cutting edge 14, reduce the frictional strength of front cutting edge 14, by being set, recess sword 17 effectively decomposed cutting resistance, the frictional heat generation is reduced, can also increase simultaneously the area of dissipation of cutterhead, reduce the cutterhead temperature, extended cutter life, and keep high strength in process always.

Embodiment

as shown in Figure 4, the helical tooth blade of the combined positioning cutting of the 4th embodiment of the present invention, first---on the basis of three embodiments, stair-stepping efficiently cutting, at least one recess sword 17 is set on platform 10, be opening and extend the groove 16 that amplifies the shape distribution in cutting face 4 backward, be formed with from chisel edge or sharp sword 9 stage portion 8 that reduces highly gradually to two outsides on rear cutting face 4, efficiently cut platform 10 and be formed with ladder sword 11 on stair-stepping cutting face, stage portion 8 and efficiently cut 10 of platforms and have a centering minute cutting blade 12 to extend to form fillet surface 13 downwards, in the inboard of spiral cutting face and the axial rear portion projection composite screw cutting face that arranges for efficiently cutting platform 10, composite screw front cutting edge 15, the spiral cutting face of outermost part is that cracking resistance is cut platform 7.

according to said structure, after being provided with of the center of cutterhead 1 top bump cutting face 4 and stage portion 8 therefore this cutter have good stability, again owing to efficiently cutting platform 7 and make this cutter in when cutting strengthen knowing clearly outer end cutting edge strength of cutterhead 1 being provided with on spiral cutting face 3, efficiently cut platform 10 and centering minute cutting blade 12 and chisel edge or sharp sword 9 and form the center drag that the cutting edge of S shape or anti-S shape has effectively decomposed cutterhead 1, having strengthened cutterhead 1 stability compares with cutter head in the past, increased again a new compound secondary sword 15, can carry out work with two front cutting edges thus, thereby the cutting force that can decompose front cutting edge 14, reduce the frictional strength of front cutting edge 14, by being set, recess sword 17 effectively decomposed cutting resistance, the frictional heat generation is reduced, can also increase simultaneously the area of dissipation of cutterhead, reduce the cutterhead temperature, extended cutter life, and keep high strength in process always.

Embodiment 5

Show as Fig. 5, the helical tooth blade of the combined positioning cutting of the 5th embodiment of the present invention comprises cutterhead 1, first---on the basis of four embodiments, the main body of cutting is replaced by the higher alloy cutter head of hardness, both effectively utilized the new invention cutting way and made cutting edge efficient higher, the advantage that intensity is larger, effectively utilized again the high rigidity of alloy cutter head, avoid the easily broken defective of Integral alloy helical tooth blade, solved workpiece hardness when too high, a difficult problem that is difficult to hole.

Embodiment 6

show as Fig. 6, the helical tooth blade of the combined positioning cutting of the 5th embodiment of the present invention, first---on the basis of five embodiments, present embodiment comprises cutterhead 1, cutterhead 1 is provided with two spiral bar 2 integratedly, the face towards cutting direction of spiral bar 2 is spiral cutting face 3, the top rear side of spiral cutting face 3 is rear cutting face 4, outermost of spiral bar 2 is screw pair cutting face 5, spiral cutting face 3 intersects with screw pair cutting face 5 and is formed with front cutting edges 14, outermost level is for efficiently cutting platform 7, the crossing side edge that is formed with in screw pair cutting face and rear cutting face, the outside of spiral cutting face is with to the inboard stair-stepping projection of axial centre, the screw pair cutting face that is formed with one-level projection at least is that platform 6 is decomposed in compound location, at least the spiral cutting face 3 of one-level projection is namely efficiently cut platform 3, arc convex or oblique protruding 19, outermost one-level spiral cutting face is for efficiently cutting platform 7, the inboard is formed with at least the spiral cutting face 3 of one-level step arrangement and namely efficiently cuts platform 3, efficiently cut platform 3 and the compound location of projection are decomposed platform 6 and are intersected and be formed with compound secondary sword 15, spiral cutting face 3 or efficiently cut platform 3 and compound location and decompose platform 6 and intersect and be formed with arc convex or oblique protruding 19, arc convex or oblique protruding 19 has extended to form compound location decomposition platform 6 to efficiently cutting platform 3, efficient minute cutting blade 21, the recessed sword of side or skew back sword 20, the spiral cutting face 3 of projection is formed with compound secondary sword 15 with intersecting, divide cutting blade 10 that at least one recess sword 17 is set from chisel edge or sharp sword 9 to the compound location at least two outsides on rear cutting face 4, a centering minute cutting blade 12 has extended to form fillet surface 13 downwards.

according to said structure, owing to efficiently cutting platform 7 and make this cutter strengthen the outer end cutting edge strength of cutterhead 1 in when cutting being provided with on spiral cutting face 3, efficiently cut platform 10 and centering minute cutting blade 12 and chisel edge or sharp sword 9 and form the center drag that the cutting edge of S shape or anti-S shape has effectively decomposed cutterhead 1, strengthened cutterhead 1 stability, compare with cutter head in the past, increased again a new compound secondary sword 15, can carry out work with two front cutting edges thus, thereby the cutting force that can decompose front cutting edge 14, reduce the frictional strength of front cutting edge 14, by being set, recess sword 17 effectively decomposed cutting resistance, compare with cutter head in the past, cutting resistance significantly reduces, radiating effect significantly improves, stock-removing efficiency significantly strengthens, the frictional heat generation is reduced, can also increase simultaneously the area of dissipation of cutterhead, reduce the cutterhead temperature, extended cutter life, and keep high strength in process always.

Embodiment 7

show as Fig. 7, the helical tooth blade of the combined positioning cutting of the 5th embodiment of the present invention, first---on the basis of six embodiments, present embodiment comprises cutterhead 1, cutterhead 1 is provided with two spiral bar 2 integratedly, the face towards cutting direction of spiral bar 2 is spiral cutting face 3, the top rear side of spiral cutting face 3 is rear cutting face 4, outermost of spiral bar 2 is screw pair cutting face 5, spiral cutting face 3 intersects with screw pair cutting face 5 and is formed with front cutting edges 14, outermost one-level is for efficiently cutting platform 7, the crossing side edge that is formed with in screw pair cutting face and rear cutting face, the outside of spiral cutting face is with to the inboard stair-stepping projection of axial centre, the screw pair cutting face that is formed with the two-stage projection is that platform 6 is decomposed in compound location, namely efficiently cut platform 3 with the spiral cutting face 3 of two-stage projection, arc convex or oblique protruding 19, outermost one-level spiral cutting face is for efficiently cutting platform 7, the inboard is formed with at least the spiral cutting face 3 of one-level step arrangement and namely efficiently cuts platform 3, efficiently cut platform 3 and the compound location of projection are decomposed platform 6 and are intersected and be formed with compound secondary sword 15, spiral cutting face 3 or efficiently cut platform 3 and compound location and decompose platform 6 and intersect and be formed with arc convex or oblique protruding 19, arc convex or oblique protruding 19 has extended to form compound location decomposition platform 6 to efficiently cutting platform 3, efficient minute cutting blade 21, the recessed sword of side or skew back sword 20, the spiral cutting face 3 of projection is formed with compound secondary sword 15 with intersecting, divide cutting blade 10 that at least one recess sword 17 is set from chisel edge or sharp sword 9 to the compound location at least two outsides on rear cutting face 4, a centering minute cutting blade 12 has extended to form fillet surface 13 downwards, near efficiently the cutting center of apex point arranges a helical groove 23 and is conducive to the cutter cooling on platform 3.

according to said structure, due to cutting face 4 and inboard after being provided with of the center of cutterhead 1 top bump, compound location decomposition platform 6 near the axial centre place, strengthened the stability of cutterhead 1, therefore this cutter has good stability and higher efficient, again owing to efficiently cutting platform 7 and make this cutter in when cutting strengthen knowing clearly outer end cutting edge strength of cutterhead 1 being provided with on spiral cutting face 3, efficiently cutting platform 10 and centering divides cutting blade 12 and chisel edge or sharp sword 9 to form the cutting edge of S shape or anti-S shape, the center drag of effectively having decomposed cutterhead 1, strengthened cutterhead 1 stability, compare with cutter head in the past, increased again a new compound secondary sword 15, can carry out work with two front cutting edges thus, thereby the cutting force that can decompose front cutting edge 14, reduce the frictional strength of front cutting edge 14, the frictional heat generation is reduced, can also increase simultaneously the area of dissipation of cutterhead, extended cutter life, and keep high strength in process always.

Embodiment 8

as shown in Figure 8, the helical tooth blade of the combined positioning cutting of the 8th embodiment of the present invention, first---on the basis of six embodiments, present embodiment comprises that anterior cutterhead also has the broad head at rear portion, adopt anterior design, and adopt in a like fashion with the figure number of front portion, cutterhead 1, cutterhead 1 is provided with two spiral bar 2 integratedly, the face towards cutting direction of spiral bar 2 is spiral cutting face 3, the top rear side of spiral cutting face 3 is rear cutting face 4, outermost of spiral bar 2 is spiral screw pair cutting face 5, spiral cutting face intersects with screw pair cutting face 5 and is formed with front cutting edges 14, the crossing side edge that is formed with in screw pair cutting face and rear cutting face, the outside of spiral cutting face is with to the inboard stair-stepping projection of axial centre, the screw pair cutting face that is formed with one-level projection at least is that platform 6 is decomposed in compound location, at least the spiral cutting face 3 of one-level projection is namely efficiently cut platform 3, arc convex or oblique protruding 19, outermost one-level spiral cutting face is for efficiently cutting platform 7, the inboard is formed with at least the spiral cutting face 3 of one-level step arrangement and namely efficiently cuts platform 3, efficiently cut platform 3 and the compound location of projection are decomposed platform 6 and are intersected and be formed with compound secondary sword 15, spiral cutting face 3 or efficiently cut platform 3 and compound location and decompose platform 6 and intersect and be formed with arc convex or oblique protruding 19, arc convex or oblique protruding 19 has extended to form compound location decomposition platform 6 to efficiently cutting platform 3, be formed with from chisel edge or sharp sword 9 stage portion 8 that reduces highly gradually to two outsides on rear cutting face 4, efficiently cut platform 7 and arc convex or oblique protruding 19, decompose platform 6 with compound location, efficiently cut platform 3 and be formed with ladder sword 11 on stair-stepping rear cutting face 4 and stage portion 8, efficient minute cutting blade 21, the recessed sword of side or skew back sword 20, cutting blade 10 is divided in compound location, efficiently cutting platform 7 intersects with compound location decomposition platform 6 through arc convex or oblique protruding 19, be formed with the angle more than or equal to 90 °, near center, cutterhead top, it is the top that cutting blade 10 is divided in compound location, efficiently cutting platform and intersection, rear cutting face formation one fillet surface 13 after cutting or grinding flute, with dwindle after chisel edge or sharp sword 9 and and compound location divide 10 of cutting blades to be formed with a centering minute cutting blade 12, efficiently cut platform 3 and centering minute cutting blade 12 and chisel edge or sharp sword 9 and form S sword or anti-S sword, the sharp sword 9 of the chisel edge of every side or the nonreactive heart, and the compound location of this side divides 10 of cutting blades that a chamfering, cutting bevel 13 is set, chamfering, cutting bevel 13 intersects with rear cutting face 4, be formed with and be less than or equal to the angle of 120 °, the spiral cutting face 19 of efficiently cutting platform 7 and adjacent inboard is namely efficiently cut height h between platform 3 for more than or equal to 0.01 millimeter, or less than 4/5ths of the thickness of the bits of discharging after this kind Tool in Cutting, or less than the height of the product number of 9 times of the cutting amount of feeding, or the cracking resistance width of cutting platform is for greater than 0.6 millimeter, be less than or equal on 1/3rd or composite screw cutting face of this tool diameter a helical groove 22 is set, divide in compound location and be formed with recess sword 17 on cutting blade 10, or the height h that efficiently cuts platform 3 that efficiently cuts platform 7 and adjacent inboard is for more than or equal to 0.01 millimeter, or less than 4/5ths of the thickness of the bits of discharging after this kind Tool in Cutting, or less than the height of the product number of 9 times of the cutting amount of feeding, or the cracking resistance width h ' that cuts platform is for greater than 0.6 millimeter, be less than or equal to 1/3rd of this tool diameter, efficiently cut platform 7 or efficiently cut platform 3 and intersect with compound location decomposition platform 6 through arc convex or oblique protruding 19, be formed with the angle a more than or equal to 90 °, at least one-level helical groove 22 is set efficiently cutting on platform, intersect with rear cutting face and be formed with the recess sword.

according to said structure, due to cutting face 4 after being provided with of the center of cutterhead 1 top bump and stage portion 8 therefore this cutter have good stability, efficiently cut platform 7 owing to being provided with again on spiral cutting face 3, make this cutter strengthen the outer end cutting edge strength of cutterhead 1 when cutting, thereby the cutting force that can decompose front cutting edge 14, reduce the frictional strength of front cutting edge 14, the frictional heat generation is reduced, can also increase simultaneously the area of dissipation of cutterhead, reduce the cutterhead temperature, extended cutter life, and keep high strength in process always.

According to said structure, because reaming cutterhead partly also adopts substantially identical structure, therefore this species stage helical tooth blade and existing common step drill in efficient with on service life, all can increase many times on the whole.

Embodiment 9

as shown in Figure 9, the helical tooth blade of the combined positioning cutting of the 9th embodiment of the present invention, first---on the basis of six embodiments, present embodiment comprises that anterior cutterhead also has the threading tool head at rear portion, adopt anterior design, and adopt in a like fashion with the figure number of front portion, cutterhead 1, cutterhead 1 is provided with two spiral bar 2 integratedly, the face towards cutting direction of spiral bar 2 is spiral cutting face 3, the top rear side of spiral cutting face 3 is rear cutting face 4, outermost of spiral bar 2 is spiral screw pair cutting face 5, spiral cutting face intersects with screw pair cutting face 5 and is formed with front cutting edges 14, the crossing side edge that is formed with in screw pair cutting face and rear cutting face, the outside of spiral cutting face is with to the inboard stair-stepping projection of axial centre, the screw pair cutting face that is formed with one-level projection at least is that platform 6 is decomposed in compound location, at least the spiral cutting face 3 of one-level projection is namely efficiently cut platform 3, arc convex or oblique protruding 19, outermost one-level spiral cutting face is for efficiently cutting platform 7, the inboard is formed with at least the spiral cutting face 3 of one-level step arrangement and namely efficiently cuts platform 3, efficiently cut platform 3 and the compound location of projection are decomposed platform 6 and are intersected and be formed with compound secondary sword 15, spiral cutting face 3 or efficiently cut platform 3 and compound location and decompose platform 6 and intersect and be formed with arc convex or oblique protruding 19, arc convex or oblique protruding 19 has extended to form compound location decomposition platform 6 to efficiently cutting platform 3, be formed with from chisel edge or sharp sword 9 stage portion 8 that reduces highly gradually to two outsides on rear cutting face 4, efficiently cut platform 7 and arc convex or oblique protruding 19, decompose platform 6 with compound location, efficiently cut platform 3 and be formed with ladder sword 11 on stair-stepping rear cutting face 4 and stage portion 8, efficient minute cutting blade 21, the recessed sword of side or skew back sword 20, cutting blade 10 is divided in compound location, efficiently cutting platform 7 intersects with compound location decomposition platform 6 through arc convex or oblique protruding 19, be formed with the angle more than or equal to 90 °, near center, cutterhead top, it is the top that cutting blade 10 is divided in compound location, efficiently cutting platform and intersection, rear cutting face formation one fillet surface 13 after cutting or grinding flute, with dwindle after chisel edge or sharp sword 9 and and compound location divide 10 of cutting blades to be formed with a centering minute cutting blade 12, efficiently cut platform 3 and centering minute cutting blade 12 and chisel edge or sharp sword 9 and form S sword or anti-S sword, the sharp sword 9 of the chisel edge of every side or the nonreactive heart, and the compound location of this side divides 10 of cutting blades that a chamfering, cutting bevel 13 is set, chamfering, cutting bevel 13 intersects with rear cutting face 4, be formed with and be less than or equal to the angle of 120 °, the spiral cutting face 19 of efficiently cutting platform 7 and adjacent inboard is namely efficiently cut height h between platform 3 for more than or equal to 0.01 millimeter, or less than 4/5ths of the thickness of the bits of discharging after this kind Tool in Cutting, or less than the height of the product number of 9 times of the cutting amount of feeding, or the cracking resistance width of cutting platform is for greater than 0.6 millimeter, be less than or equal to 1/3rd of this tool diameter, divide in compound location and be formed with recess sword 17 on cutting blade 10, or the height h that efficiently cuts platform 3 that efficiently cuts platform 7 and adjacent inboard is for more than or equal to 0.01 millimeter, or less than 4/5ths of the thickness of the bits of discharging after this kind Tool in Cutting, or less than the height of the product number of 9 times of the cutting amount of feeding, or the cracking resistance width h ' that cuts platform is for greater than 0.6 millimeter, be less than or equal to 1/3rd of this tool diameter, efficiently cut platform 7 or efficiently cut platform 3 and intersect with compound location decomposition platform 6 through arc convex or oblique protruding 19, be formed with the angle a more than or equal to 90 °, intersect with rear cutting face and be formed with the recess sword, diameter 24 at the bottom of the silk of the first order at least of threading tool head is less than the silk end diameter 25 at rear portion, and their line is not point-blank.

according to said structure, due to cutting face 4 after being provided with of the center of cutterhead 1 top bump and stage portion 8 therefore this cutter have good stability, efficiently cut platform 7 owing to being provided with again on spiral cutting face 3, make this cutter strengthen the outer end cutting edge strength of cutterhead 1 when cutting, compound location divides cutting blade 10 and centering to divide cutting blade 12 and chisel edge or sharp sword 9 to form the cutting edge of S shape or anti-S shape, the center drag of effectively having decomposed cutterhead 1, strengthened the stability of cutterhead 1, compare with cutter head in the past, increased again a new compound secondary sword 15, can carry out work with two front cutting edges thus, thereby the cutting force that can decompose front cutting edge 14, reduce the frictional strength of front cutting edge 14, the frictional heat generation is reduced, can also increase simultaneously the area of dissipation of cutterhead, reduce the cutterhead temperature, extended cutter life, and keep high strength in process always.

According to said structure, provide the cracking resistance that arranges on cutterhead 1 and cut width or the height of platform, and the above data of angle are going out through practice, as surpassing this scope, will have a greatly reduced quality in efficient or service life, this kind cutter can decompose the cutting force of cutting edge, reduce the frictional strength of cutting edge, increase the area of dissipation of cutterhead, reduce the cutterhead temperature, decompose cutting edge stressed of flimsy outer end of cutter, extended cutter life, and keep high strength always in process.

Although abovely be illustrated as an example of cutter with two spiral bar example, cutter of the present invention also can have a plurality of spiral bar, can adopt as described the structure of embodiment and the combination of other various ways thereof on each spiral bar.

Above-described preferred embodiment is illustrative and not restrictive, in the situation that do not break away from purport of the present invention and essential characteristic, the present invention can also otherwise implement and specialize, scope of the present invention is limited by claim, and all distortion in the claim limited range all fall within the scope of the present invention.

Claims

1. the helical tooth blade of combined positioning cutting, the machine that relates generally to for machining adds fluted drill, comprise cutterhead, be provided with a plurality of spiral bar the cutterhead body, the tooth shape towards the cutting direction exterior side of each spiral bar becomes the screw pair cutting edge, the face towards direction of rotation at screw pair cutting edge place forms spiral cutting face, the face of the axial forward end rear side of spiral cutting face forms rear cutting face, spiral cutting face and the crossing cutting edge that is formed with in rear cutting face, it is characterized in that: on the helical tooth blade of combined positioning cutting, integratedly, or connect and carry out with forming as one the setting of following technical scheme, the inboard towards the spiral cutting face of direction of rotation at this screw pair cutting edge, the composite screw cutting face of one-level inboard at least that is provided with through arc convex or oblique raised step shape projection, or the extension that erects of arc convex or oblique projection, be formed with the compound location of intersecting with the composite screw cutting face of inboard and decompose platform, the spiral cutting face of arranged in step shape is for efficiently cutting platform, the cutting edge of arranged in step shape or spiral cutting sword are efficient minute cutting blade, the outermost platform of efficiently cutting is that cracking resistance is cut platform, outermost efficient minute cutting blade is that cracking resistance is divided cutting blade, or arc convex or oblique projection extend to front end vertically, or extend on cutting edge or spiral cutting sword to the rear portion arc, be formed with the recessed sword of side or skew back sword, or cracking resistance is cut platform, or efficiently cut platform and compound decomposition platform and intersect, be formed with the angle more than or equal to 90 °, or arc convex or oblique projection extend to vertically front end or extend on cutting edge or spiral cutting sword to the rear portion arc, be formed with the recessed sword of side or skew back sword, with stair-stepping cutting edge or spiral cutting sword, or the center chisel edge of the apex point that arranges in center, cutterhead top or the two ends of sharp sword, respectively form a centering fillet surface through chamfering, crossing being formed with in the rear cutting face of centering chamfer face and apex point is less than or equal to the angle of 120 °, form a chisel edge between the centering chamfer face of both sides or without the sharp sword of chisel edge, or the rear cutting face at centering chamfer face and apex point place is intersected and being formed with a centering minute cutting blade, the outside of centering minute cutting blade is location minute cutting blade, point sword or chisel edge, at least the compound location of both sides divides the sharp edge type of cutting blade and centering minute cutting blade and chisel edge or the nonreactive heart to become the cutting edge of S shape or anti-S shape, it is the S sword, or on the rear cutting face from apex point to outermost side edge incline direction, relatively depression is provided with Baltimore groove, or dovetail groove, or square groove, or del groove, or deep-slotted chip breaker, or shaped groove, or cutting face after planar shaped, or cutting face after notch cuttype, or the contextual definition that cracking resistance is cut platform or efficiently cut platform and the inboard adjacent height of efficiently cutting platform is, cracking resistance is cut platform or is efficiently cut platform and the height of efficiently cutting platform of adjacent inboard is that the depth of cut multiply by the product number, when work piece hardness or the higher and cutter of viscosity when larger, the cutting depth of cut is less, the product number that the depth of cut is taken advantage of is larger, when work piece hardness or the higher and cutter of viscosity hour, the cutting depth of cut is less, the product number that the depth of cut is taken advantage of is larger, when work piece hardness or the lower and cutter of viscosity when larger, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, when work piece hardness or the lower and cutter of viscosity hour, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, or cracking resistance is cut the height of combined cut face of platform and adjacent inboard for more than or equal to 0.01 millimeter, or less than 4/5ths of the thickness of the bits of discharging after this kind Tool in Cutting, or less than the height of the product number of 9 times of the cutting amount of feeding, or the cracking resistance width of cutting platform is for greater than 0.6 millimeter, or be less than or equal to 1/3rd of this tool diameter, the any one cutting way of above structure, or the formed combination sword of any combination of above cutting way arranges the helical tooth blade of formed combined positioning cutting on helical tooth blade.

2. the helical tooth blade of combined positioning cutting, the machine that relates generally to for machining adds fluted drill, comprise cutterhead, cutterhead is provided with a plurality of spiral bar integratedly, the tooth shape towards the cutting direction exterior side of each spiral bar becomes the screw pair cutting edge, the face towards direction of rotation at screw pair cutting edge place forms spiral cutting face, the face of the axial forward end rear side of spiral cutting face forms rear cutting face, spiral cutting face and the crossing cutting edge that is formed with in rear cutting face, on the helical tooth blade of combined positioning cutting, integratedly, or connect and carry out with forming as one the setting of following technical scheme, the inboard towards the spiral cutting face of direction of rotation at this screw pair cutting edge, the composite screw cutting face of one-level inboard at least that is provided with through arc convex or oblique raised step shape projection, or the extension that erects of arc convex or oblique projection, be formed with the compound location of intersecting with the composite screw cutting face of inboard and decompose platform, the spiral cutting face of arranged in step shape is for efficiently cutting platform, the cutting edge of arranged in step shape or spiral cutting sword are efficient minute cutting blade, the outermost platform of efficiently cutting is that cracking resistance is cut platform, outermost efficient minute cutting blade is that cracking resistance is divided cutting blade, or arc convex or oblique projection extend to front end vertically, or extend on cutting edge or spiral cutting sword to the rear portion arc, be formed with the recessed sword of side or skew back sword, or cracking resistance is cut platform, or efficiently cut platform and compound decomposition platform and intersect, be formed with the angle more than or equal to 90 °, or arc convex or oblique projection extend to vertically front end or extend on cutting edge or spiral cutting sword to the rear portion arc, be formed with the recessed sword of side or skew back sword, with stair-stepping cutting edge or spiral cutting sword, or the center chisel edge of the apex point that arranges in center, cutterhead top or the two ends of sharp sword, respectively form a centering fillet surface through chamfering, crossing being formed with in the rear cutting face of centering chamfer face and apex point is less than or equal to the angle of 120 °, form a chisel edge between the centering chamfer face of both sides or without the sharp sword of chisel edge, or the rear cutting face at centering chamfer face and apex point place is intersected and being formed with a centering minute cutting blade, the outside of centering minute cutting blade is location minute cutting blade, point sword or chisel edge, at least the compound location of both sides divides the sharp edge type of cutting blade and centering minute cutting blade and chisel edge or the nonreactive heart to become the cutting edge of S shape or anti-S shape, it is the S sword, or on the rear cutting face from apex point to outermost side edge incline direction, relatively depression is provided with Baltimore groove, or dovetail groove, or square groove, or del groove, or deep-slotted chip breaker, or shaped groove, or cutting face after planar shaped, or cutting face after notch cuttype, or the contextual definition that cracking resistance is cut platform or efficiently cut platform and the inboard adjacent height of efficiently cutting platform is, cracking resistance is cut platform or is efficiently cut platform and the height of efficiently cutting platform of adjacent inboard is that the depth of cut multiply by the product number, when work piece hardness or the higher and cutter of viscosity when larger, the cutting depth of cut is less, the product number that the depth of cut is taken advantage of is larger, when work piece hardness or the higher and cutter of viscosity hour, the cutting depth of cut is less, the product number that the depth of cut is taken advantage of is larger, when work piece hardness or the lower and cutter of viscosity when larger, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, when work piece hardness or the lower and cutter of viscosity hour, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, or cracking resistance is cut the height of combined cut face of platform and adjacent inboard for more than or equal to 0.01 millimeter, or less than 4/5ths of the thickness of the bits of discharging after this kind Tool in Cutting, or less than the height of the product number of 9 times of the cutting amount of feeding, or the cracking resistance width of cutting platform is for greater than 0.6 millimeter, or be less than or equal to 1/3rd of this tool diameter, it is characterized in that: or at the spiral cutting face of the axial forward end of helical tooth blade, intersect with rear cutting face, the corner that the cutting edge that forms and screw pair cutting edge intersect, the part arranges cracking resistance and cuts platform, and be formed with respectively cracking resistance and cut platform, the cutting edge that intersects with rear cutting face, or local screw pair cutting edge is that cracking resistance is divided cutting blade, the any one cutting way of above structure, or the formed combination sword of any combination of above cutting way arranges the helical tooth blade of formed combined positioning cutting on helical tooth blade.

3. the helical tooth blade of combined positioning cutting, the machine that relates generally to for machining adds fluted drill, comprise cutterhead, cutterhead is provided with a plurality of spiral bar integratedly, the tooth shape towards the cutting direction exterior side of each spiral bar becomes the screw pair cutting edge, the face towards direction of rotation at screw pair cutting edge place forms spiral cutting face, the face of the axial forward end rear side of spiral cutting face forms rear cutting face, spiral cutting face and the crossing cutting edge that is formed with in rear cutting face, on the helical tooth blade of combined positioning cutting, integratedly, or connect and carry out with forming as one the setting of following technical scheme, the inboard towards the spiral cutting face of direction of rotation at this screw pair cutting edge, the composite screw cutting face of one-level inboard at least that is provided with through arc convex or oblique raised step shape projection, or the extension that erects of arc convex or oblique projection, be formed with the compound location of intersecting with the composite screw cutting face of inboard and decompose platform, the spiral cutting face of arranged in step shape is for efficiently cutting platform, the cutting edge of arranged in step shape or spiral cutting sword are efficient minute cutting blade, the outermost platform of efficiently cutting is that cracking resistance is cut platform, outermost efficient minute cutting blade is that cracking resistance is divided cutting blade, or arc convex or oblique projection extend to front end vertically, or extend on cutting edge or spiral cutting sword to the rear portion arc, be formed with the recessed sword of side or skew back sword, or cracking resistance is cut platform, or efficiently cut platform and compound decomposition platform and intersect, be formed with the angle more than or equal to 90 °, or arc convex or oblique projection extend to vertically front end or extend on cutting edge or spiral cutting sword to the rear portion arc, be formed with the recessed sword of side or skew back sword, with stair-stepping cutting edge or spiral cutting sword, or the center chisel edge of the apex point that arranges in center, cutterhead top or the two ends of sharp sword, respectively form a centering fillet surface through chamfering, crossing being formed with in the rear cutting face of centering chamfer face and apex point is less than or equal to the angle of 120 °, form a chisel edge between the centering chamfer face of both sides or without the sharp sword of chisel edge, or the rear cutting face at centering chamfer face and apex point place is intersected and being formed with a centering minute cutting blade, the outside of centering minute cutting blade is location minute cutting blade, point sword or chisel edge, at least the compound location of both sides divides the sharp edge type of cutting blade and centering minute cutting blade and chisel edge or the nonreactive heart to become the cutting edge of S shape or anti-S shape, it is the S sword, or on the rear cutting face from apex point to outermost side edge incline direction, relatively depression is provided with Baltimore groove, or dovetail groove, or square groove, or del groove, or deep-slotted chip breaker, or shaped groove, or cutting face after planar shaped, or cutting face after notch cuttype, or the contextual definition that cracking resistance is cut platform or efficiently cut platform and the inboard adjacent height of efficiently cutting platform is, cracking resistance is cut platform or is efficiently cut platform and the height of efficiently cutting platform of adjacent inboard is that the depth of cut multiply by the product number, when work piece hardness or the higher and cutter of viscosity when larger, the cutting depth of cut is less, the product number that the depth of cut is taken advantage of is larger, when work piece hardness or the higher and cutter of viscosity hour, the cutting depth of cut is less, the product number that the depth of cut is taken advantage of is larger, when work piece hardness or the lower and cutter of viscosity when larger, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, when work piece hardness or the lower and cutter of viscosity hour, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, or cracking resistance is cut the height of combined cut face of platform and adjacent inboard for more than or equal to 0.01 millimeter, or less than 4/5ths of the thickness of the bits of discharging after this kind Tool in Cutting, or less than the height of the product number of 9 times of the cutting amount of feeding, or the cracking resistance width of cutting platform is for greater than 0.6 millimeter, or be less than or equal to 1/3rd of this tool diameter, or at the spiral cutting face of the axial forward end of helical tooth blade, intersect with rear cutting face, the corner that the cutting edge that forms and screw pair cutting edge intersect, the part arranges cracking resistance and cuts platform, and be formed with respectively cracking resistance and cut platform, the cutting edge that intersects with rear cutting face, or local screw pair cutting edge is that cracking resistance is divided cutting blade, it is characterized in that: composite screw arranges one-level helical groove at least on the cutting face, the any one cutting way of above structure, or the formed combination sword of any combination of above cutting way arranges the helical tooth blade of formed combined positioning cutting on helical tooth blade.

4. the helical tooth blade of combined positioning cutting, the machine that relates generally to for machining adds fluted drill, comprise cutterhead, cutterhead is provided with a plurality of spiral bar integratedly, the tooth shape towards the cutting direction exterior side of each spiral bar becomes the screw pair cutting edge, the face towards direction of rotation at screw pair cutting edge place forms spiral cutting face, the face of the axial forward end rear side of spiral cutting face forms rear cutting face, spiral cutting face and the crossing cutting edge that is formed with in rear cutting face, on the helical tooth blade of combined positioning cutting, integratedly, or connect and carry out with forming as one the setting of following technical scheme, the inboard towards the spiral cutting face of direction of rotation at this screw pair cutting edge, the composite screw cutting face of one-level inboard at least that is provided with through arc convex or oblique raised step shape projection, or the extension that erects of arc convex or oblique projection, be formed with the compound location of intersecting with the composite screw cutting face of inboard and decompose platform, the spiral cutting face of arranged in step shape is for efficiently cutting platform, the cutting edge of arranged in step shape or spiral cutting sword are efficient minute cutting blade, the outermost platform of efficiently cutting is that cracking resistance is cut platform, outermost efficient minute cutting blade is that cracking resistance is divided cutting blade, or arc convex or oblique projection extend to front end vertically, or extend on cutting edge or spiral cutting sword to the rear portion arc, be formed with the recessed sword of side or skew back sword, or cracking resistance is cut platform, or efficiently cut platform and compound decomposition platform and intersect, be formed with the angle more than or equal to 90 °, or arc convex or oblique projection extend to vertically front end or extend on cutting edge or spiral cutting sword to the rear portion arc, be formed with the recessed sword of side or skew back sword, with stair-stepping cutting edge or spiral cutting sword, or the center chisel edge of the apex point that arranges in center, cutterhead top or the two ends of sharp sword, respectively form a centering fillet surface through chamfering, crossing being formed with in the rear cutting face of centering chamfer face and apex point is less than or equal to the angle of 120 °, form a chisel edge between the centering chamfer face of both sides or without the sharp sword of chisel edge, or the rear cutting face at centering chamfer face and apex point place is intersected and being formed with a centering minute cutting blade, the outside of centering minute cutting blade is location minute cutting blade, point sword or chisel edge, at least the compound location of both sides divides the sharp edge type of cutting blade and centering minute cutting blade and chisel edge or the nonreactive heart to become the cutting edge of S shape or anti-S shape, it is the S sword, or on the rear cutting face from apex point to outermost side edge incline direction, relatively depression is provided with Baltimore groove, or dovetail groove, or square groove, or del groove, or deep-slotted chip breaker, or shaped groove, or cutting face after planar shaped, or cutting face after stairstepping, or the contextual definition that cracking resistance is cut platform or efficiently cut platform and the inboard adjacent height of efficiently cutting platform is, cracking resistance is cut platform or is efficiently cut platform and the height of efficiently cutting platform of adjacent inboard is that the depth of cut multiply by the product number, when work piece hardness or the higher and cutter of viscosity when larger, the cutting depth of cut is less, the product number that the depth of cut is taken advantage of is larger, when work piece hardness or the higher and cutter of viscosity hour, the cutting depth of cut is less, the product number that the depth of cut is taken advantage of is larger, when work piece hardness or the lower and cutter of viscosity when larger, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, when work piece hardness or the lower and cutter of viscosity hour, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, or cracking resistance is cut the height of combined cut face of platform and adjacent inboard for more than or equal to 0.01 millimeter, or less than 4/5ths of the thickness of the bits of discharging after this kind Tool in Cutting, or less than the height of the product number of 9 times of the cutting amount of feeding, or the cracking resistance width of cutting platform is for greater than 0.6 millimeter, or be less than or equal to 1/3rd of this tool diameter, or at the spiral cutting face of the axial forward end of helical tooth blade, intersect with rear cutting face, the corner that the cutting edge that forms and screw pair cutting edge intersect, the part arranges cracking resistance and cuts platform, and be formed with respectively cracking resistance and cut platform, the cutting edge that intersects with rear cutting face, or local screw pair cutting edge is that cracking resistance is divided cutting blade, at least one-level helical groove is set on the composite screw cutting face, it is characterized in that: in the helical tooth blade front central of combined positioning cutting, or the compound location of both sides divides cutting blade at the axial centre place, be formed with 1 chisel edge, at efficient minute cutting blade, or compound location is divided on cutting blade, be formed with 2 straight sword or 3 composite straight swords, or the 4 ladder swords that reduce gradually in the spiral bar outside height, or 5 composite step sword, on cutting edge or minute cutting blade, 6 recess swords or 7 compound recess swords are set, or the shaped form cutting edge is 8 curved edges, or 9 compound curved sword, or with cutterhead longitudinal center line or screw pair cutting edge, 10 oblique swords of angle are arranged, or with oblique sword, 11 composite inclined swords of certain angle or arranged in step shape are arranged, or 1 chisel edge, or 2 flat sword, or 3 compound flat sword, or be formed with 4 ladder swords on the rear cutting face of the spiral cutting face of arranged in step shape or arranged in step shape, or 5 composite step sword, or divide cutting blade in compound location, or efficiently divide at least one 6 recess sword or 7 compound recess swords are set on cutting blade, or arc convex, or oblique projection, or efficiently cut platform, or efficiently cut platform and extend and intersect in the cutting face backward, be formed with 8 curved edges, or 9 compound curved sword, or 10 oblique sword, or 11 in the composite inclined sword, or 12 step drill, or the structure of 13 drilling and tapping one, the any one cutting way of above structure, or the formed combination sword of any combination of above cutting way arranges the helical tooth blade of formed combined positioning cutting on helical tooth blade.

5. as the helical tooth blade of the arbitrary described combined positioning cutting of claim 1-4, it is characterized in that: on the apex point of each spiral bar of the helical tooth blade of described combined positioning cutting, from the position of tool axis on toward the outer side the direction of screw pair cutting edge, be formed with one-level spiral cutting face at least protrudingly, at least platform is cut in the compound location of one-level spiral, and one-level screw pair cutting edge at least.

6. as the helical tooth blade of the arbitrary described combined positioning cutting of claim 1-4, it is characterized in that: the cutting edge on the stair-stepping rear cutting face of the two-stage at least of described spiral bar and fillet surface or a centering minute cutting blade arrange at least one recess sword, the recess sword is opening, and cutting face or cutting face are extended and are amplified the groove that shape distributes backward, and the sharp edge type of cutting edge, centering minute cutting blade and chisel edge or the nonreactive heart becomes the cutting edge of S shape or anti-S shape, i.e. S sword.

7. as the helical tooth blade of the arbitrary described combined positioning cutting of claim 1-4, it is characterized in that: cutting edge or a centering minute cutting blade on the cutting face of described spiral bar or rear cutting face and fillet surface arrange at least one recess sword or compound recess sword, and recess sword or compound recess sword are opening cutting face or cutting face are extended or amplified shape and extend groove or the compound groove that distributes backward.

8. as the helical tooth blade of the arbitrary described combined positioning cutting of claim 1-4, it is characterized in that: on the cutterhead of described cutter to run through this cutterhead and to be provided with alloy cutter head or alloy cutter head with respect to the centrosymmetric mode of end face, the sharp edge type of the cutting edge of the both sides at least of described alloy cutter head or alloy cutter head and centering minute cutting blade and chisel edge or the nonreactive heart becomes S sword or anti-S sword, alloy cutter head or alloy cutter head begin to be formed with one or more levels step in the mode that reduces highly gradually laterally from the cutterhead axial centre, and be formed with stair-stepping cutting edge on rear cutting face or cutting face, or recess sword, or compound recess sword.

9. as the helical tooth blade of the arbitrary described combined positioning cutting of claim 1-4, it is characterized in that: be the Integral alloy cutter head at described helical tooth blade, the sharp edge type of the cutting edge of the both sides at least of described alloy cutter head and centering minute cutting blade and chisel edge or the nonreactive heart becomes S sword or anti-S sword, alloy cutter head begins to be formed with one or more levels step in the mode that reduces highly gradually laterally from the cutterhead axial centre, and be formed with stair-stepping cutting edge on rear cutting face or cutting face, or recess sword, or compound recess sword.