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EP4493346A1 - Outil de coupe équipé d'une tête de coupe et d'un entraîneur de tête de coupe - Google Patents

Outil de coupe équipé d'une tête de coupe et d'un entraîneur de tête de coupe

Info

Publication number
EP4493346A1
EP4493346A1 EP23712195.9A EP23712195A EP4493346A1 EP 4493346 A1 EP4493346 A1 EP 4493346A1 EP 23712195 A EP23712195 A EP 23712195A EP 4493346 A1 EP4493346 A1 EP 4493346A1
Authority
EP
European Patent Office
Prior art keywords
cutting head
cutting
section
cutting tool
head driver
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP23712195.9A
Other languages
German (de)
English (en)
Inventor
Uwe Schlagenhauf
Gilbert Kleiner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guehring KG
Original Assignee
Guehring KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE102022106206.6A external-priority patent/DE102022106206A1/de
Priority claimed from DE102022112301.4A external-priority patent/DE102022112301A1/de
Application filed by Guehring KG filed Critical Guehring KG
Publication of EP4493346A1 publication Critical patent/EP4493346A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/0002—Drills with connected cutting heads, e.g. with non-exchangeable cutting heads; Drills with a single insert extending across the rotational axis and having at least two radially extending cutting edges in the working position
    • B23B51/0003—Drills with connected cutting heads, e.g. with non-exchangeable cutting heads; Drills with a single insert extending across the rotational axis and having at least two radially extending cutting edges in the working position with exchangeable heads or inserts
    • B23B51/0005—Drills with connected cutting heads, e.g. with non-exchangeable cutting heads; Drills with a single insert extending across the rotational axis and having at least two radially extending cutting edges in the working position with exchangeable heads or inserts with cutting heads or inserts attached by wedge means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
    • B23B27/16—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2240/00—Details of connections of tools or workpieces
    • B23B2240/04—Bayonet connections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/06—Drills with lubricating or cooling equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2210/00—Details of milling cutters
    • B23C2210/02—Connections between the shanks and detachable cutting heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2210/00—Details of milling cutters
    • B23C2210/03—Cutting heads comprised of different material than the shank irrespective of whether the head is detachable from the shank
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2240/00—Details of connections of tools or workpieces
    • B23C2240/04—Bayonet connections

Definitions

  • the present disclosure relates to a cutting tool for machining workpieces, in particular a shank tool, such as a milling cutter or a drill.
  • the cutting tool has a cutting head, preferably made of hard metal, and a cutting head driver, preferably made of steel.
  • the cutting head and the cutting head driver can be connected to one another via a type of bayonet lock/bayonet connection, in particular torque-transmitting and axially fixed.
  • Such multi-part cutting tools which can be connected to one another in a bayonet-like manner for torque transmission and axial connection, are already known from the prior art.
  • DE 10 2017 214 165 B4 discloses a rotary tool with a carrier and a cutting insert, in which the carrier can be inserted into a seat of the cutting insert and, when inserted, rests with its side surfaces on respective side surfaces of the cutting insert.
  • the cutting head and the cutting head driver can be made from different materials/materials, the same material group, preferably steel, or different material groups, preferably from hard metal and steel, in order to optimize the cutting tool depending on the requirements in terms of wear resistance, strength and costs.
  • the disadvantage of known cutting tools is that the lever-like effect on the bayonet connection between the cutting head and the cutting head driver induces a bending stress, which is particularly when the cutting head and the cutting head driver are designed from different ones Materials in the area of the cutting head or a component of the cutting tool made of hard metal must not become too high to avoid damage.
  • a cutting tool consisting of a cutting head driver and a cutting head is known, which can be connected to one another via coupling sections on the cutting head side and cutting head driver side are.
  • the coupling sections each engage in recesses of the cutting head or cutting head driver that are set back on the front side, i.e. opposite the front side of the coupling sections, and lie on complementary torque transmission surfaces for torque transmission/stop surfaces and fastening surfaces/clamping surfaces for centering, fastening and/or clamping against one another at.
  • the coupling sections on the cutting head side are through a coupling pin that extends diametrically continuously but not to the outer tool radius and the coupling sections on the cutting head driver side are through diametrically opposite, spaced apart/individual ones , in cross section essentially ring section-shaped webs/projections are formed.
  • the coupling sections on the cutting head driver side surround the coupling sections on the cutting head side radially on the outside.
  • the coupling pin on the cutting head has an approximately rectangular basic shape, in which longitudinal sections and transverse sections merge into one another via transition sections designed as rounded corner sections, the longitudinal sections forming the torque transmission surfaces/stop surfaces and the transverse sections forming the fastening surfaces/clamping surfaces.
  • the longitudinal sections and/or transverse sections are axially undercut, for example designed in the manner of a dovetail connection.
  • the coupling sections on the cutting head side are formed by a diametrically continuously extending web on the cutting head and the coupling sections on the cutting head driver side are formed by diametrically opposite, spaced apart/individual projections.
  • the torque transmission surfaces are axially positioned and extend essentially in the radial direction.
  • the fastening surfaces extend in the circumferential direction concentric to the axis of rotation.
  • the coupling sections on the cutting head side are formed by a coupling pin which extends diametrically continuously up to the outer tool radius and the coupling sections on the cutting head driver side are formed by diametrically opposite, spaced apart/individual webs/projections which are essentially annular in cross section.
  • the fastening surfaces extend in the circumferential direction concentrically to the axis of rotation and are axially positioned for axial securing, in particular aligned radially inwards and longitudinally backwards, so that a dovetail-like cross section results in the area of the fastening surfaces.
  • the torque transmission surfaces extend in the radial direction and are aligned parallel to the axis of rotation, ie not axially adjusted.
  • the coupling sections on the cutting head side rest axially on the recessed recesses of the cutting head driver, while the coupling sections on the cutting head driver side are axially spaced from the recessed recesses of the cutting head.
  • the disadvantage of these rotary tools is that they have weak points in terms of material failure and are not suitable for transmitting particularly high torques.
  • the geometry of the coupling pin or the dovetail-like external geometry are complex to produce, for example through subsequent milling.
  • the cutting head and the cutting head driver each have a main body, from the end face of which a projection section that is undercut in the axial direction projects axially. That is, the projection portion of the cutting head projects from the (axial) end face of the main body of the cutting head in the axial direction toward the cutting head driver.
  • the projection section of the cutting head is designed to be undercut, in particular in an axial direction directed away from the cutting head driver. This also means that the projection portion of the cutting head driver projects from the (axial) end face of the main body of the cutting head driver in the axial direction toward the cutting head.
  • the projection section of the cutting head driver is designed to be undercut, in particular in an axial direction directed away from the cutting head.
  • the cutting head and the cutting head driver each have opposite, stepped end faces, in which the axially outer (or outermost) part of the end face passes through the end face of the corresponding projection section and the axially recessed/inner part of the end face passes through the end face of the corresponding main body is formed.
  • They undercut Projection sections each extend the end face of the corresponding main body in opposite axial directions.
  • the projection section of the cutting head and the projection section of the cutting head driver can be positively connected to one another/brought into positive engagement by rotating the cutting head counter to a cutting direction of the cutting tool. By rotating the cutting head in the cutting direction, the projection portion of the cutting head and the projection portion of the cutting head driver can be detached from one another/moved out of positive engagement.
  • the bayonet lock/the bayonet connection is formed by the axially undercut projection sections in such a way that the cutting head and the cutting head driver can be connected to one another by mutually twisting them relative to one another and can be released from one another by mutually turning them in opposite directions to one another.
  • the projection sections serve in particular as coupling sections for connecting the cutting head and the cutting head driver.
  • the projection section of the cutting head and the projection section of the cutting head driver each have mutually complementary, undercut in the axial direction, preferably axially positioned, torque transmission surfaces which, in the connected state of the cutting head and the cutting head driver, rest against one another, in particular flatly. That is, the projection portion of the cutting head is wedge-shaped or has a wedge-shaped portion that forms the torque transmission surface/undercut surface of the projection portion.
  • the torque transmission surface of the projection section of the cutting head can preferably be aligned essentially in the radial direction, ie perpendicular to the tangential direction, of the cutting tool in order to be able to positively absorb a torque to be transmitted from the cutting head driver to the cutting head.
  • the projection section of the cutting head driver is wedge-shaped or has a wedge-shaped section which forms the torque transmission surface/undercut surface of the projection section.
  • the torque transfer area of the The projection section of the cutting head driver can preferably be aligned essentially in the radial direction, ie perpendicular to the tangential direction, of the cutting tool in order to be able to pass on a torque to be transmitted from the cutting head driver to the cutting head in a form-fitting manner.
  • the cutting head and the cutting head driver are essentially Z-shaped/stepped in the area of their (bayonet) connection.
  • the projection portions of the cutting head and the cutting head driver in the cutting tool are dimensioned such that an end face of the projection portion of the cutting head in the connected state abuts an end face of the main body of the cutting head driver in the axial direction. That is, the projection portions are dimensioned or their tolerances are selected such that when the torque transmitting surfaces of the projection portions abut each other (and transmit torque), i.e. in the connected state of the cutting head and the cutting head driver, the projection portion of the cutting head is attached to the main body of the cutting head driver is axially supported.
  • the wedge-shaped projection section of the cutting head in the connected state is received axially and tangentially in a wedge-shaped recess, which is formed by the projection section and the main body of the cutting head driver, or the wedge-shaped section of the cutting head is supported with both wedge sides in the wedge-shaped recess of the cutting head driver.
  • the axial contact between the end face of the main body of the cutting head driver and the end face of the projection section of the cutting head creates a wedge support, which acts in the axial direction towards the cutting head driver and thus generates a frictional force that counteracts the load and thereby also reduces the bending stress, in particular in the Area of transition between the projection portion and the main body of the cutting head is reduced.
  • the expansion which results from the axial adjustment of the torque transmission surfaces or wedge-shaped design of the projection sections, takes place (exclusively or predominantly) in the area of the wedge-shaped recess of the cutting head driver and not in the area of the wedge-shaped recess of the cutting head.
  • an axial undercut in particular in the form of a dovetail, is only formed on the fastening surfaces of the coupling pin that are used exclusively for fastening, in particular for axial securing and centering . Since these fastening surfaces cannot transmit torque due to their design being concentric with the axis of rotation, they do not correspond to the torque transmission surfaces according to the present disclosure.
  • the stop surfaces serving as torque transmission surfaces are designed parallel to the axis of rotation, so that the core or problem of the present disclosure, namely the torque transmission surfaces undercut in the axial direction, is converted into axial forces by the cutting forces arising during workpiece machining and a spread occurs in which DE 697 34 937 T2 is not available.
  • an end face of the projection portion of the cutting head driver in the connected state can be spaced from an end face of the main body of the cutting head with axial play. In other words, only one end face of the stepped end face of the cutting head rests on the cutting head driver in order to avoid a double fit.
  • the wedge-shaped section of the cutting head driver only contacts the wedge-shaped recess in the cutting head with one wedge side, more precisely with the torque transmission surface, and thereby does not spread the wedge-shaped recess in the cutting head.
  • a load on the transition between the torque transmission surface and the non-contacting end face is reduced, which has an advantageous effect on the service life of the cutting head, and thus of the cutting tool.
  • the projection portion of the cutting head can be designed to be longer in the axial direction than the projection portion of the cutting head driver.
  • the (minor) difference in length in the axial extent of the two projection sections means that the cutting head rests with its projection section on the main body of the cutting head driver, while the (shorter) projection section of the cutting head driver rests remains spaced from the main body of the cutting head.
  • the contact surfaces, and thus force transmission surfaces can be clearly defined in terms of construction.
  • the projection sections can have surfaces or geometries which work when connecting the cutting head and the cutting head driver to one another.
  • the wedge-shaped projection section of the cutting head and the wedge-shaped recess of the cutting head driver can have surfaces or geometries which, when connecting the two sections in the direction of rotation, interact with one another in a form-fitting manner or rust together or achieve a lock in the direction of rotation. This means that unintentional loosening can be avoided. Since the wedge-shaped section is made of more rigid material and the wedge-shaped recess is made of more flexurally elastic material, the former can expand the second in a flexurally elastic manner for the rusting of the surfaces or geometries.
  • the cutting head and the cutting head driver can have complementary geometries, so that the cross section of the cutting head driver and the cross section of the cutting head essentially correspond to each other at their parting plane and/or a geometric profile of the cutting head driver, in particular a formation of a spiral, of flutes and/or or circumferential cutting, is continued by the cutting head.
  • the cutting head and the cutting head driver preferably have complementary geometries, so that the cross section of the cutting head after the stepped parting plane of both parts essentially corresponds to the cross section of the cutting head driver in front of the stepped parting plane or the geometry profile (including helix, flutes and circumferential cutting) of the cutting head after the connection point continues the geometry of the cutting head driver (including helix, flutes and circumferential cutting).
  • the torque transmission surfaces can be adjusted axially in such a way that the cutting head is pressed axially towards the cutting head driver by cutting forces acting during workpiece machining. This means that with increasing cutting forces during workpiece machining, the cutting head is attracted more strongly to the cutting head driver due to the interaction between the axially positioned torque transmission surfaces. This means that in particular High cutting speeds ensure a firm connection between the cutting head and the cutting head driver.
  • the torque transmission surfaces are preferably designed in such a way that a tangential force, which arises from cutting forces acting during workpiece machining, is converted into an axial force in such a way that the cutting head is pressed axially into contact with the cutting head driver.
  • This has the effect that with increasing cutting forces, i.e. at higher speeds, the tangential force increases and thus the axial force also increases, which in turn strengthens the connection between the cutting head and the cutting head driver. This means that particularly high cutting forces can be transmitted despite the multi-part structure of the cutting tool.
  • the torque transmission surfaces can be axially adjusted with an axial angle of attack, preferably from 2° to 15°, more preferably from 2° to 10°, particularly preferably from 2° to 5°, in particular from 3°.
  • an angle of attack has proven to be sufficient to create a solid connection that is also easy to assemble.
  • the forces acting on the projection section are kept as low as possible by choosing the axial angle of attack.
  • the torque transmission surface of the cutting head and the torque transmission surface of the cutting head driver can have identical axial angles of attack. This means that the torque transmission surfaces lie flat against one another, so that the cutting head and the cutting head driver do not jam in the area of the torque transmission surface.
  • the axial angle of attack can be constant over the entire circumferential extent/circumferential contour, ie the entire course in the circumferential direction, of the torque transmission surfaces.
  • the peripheral surfaces of the projection sections at least in the area in which the cutting head and the cutting head driver contact each other in the connected state abut, preferably over the entire extent in the circumferential direction, ie also in the non-abutting area, have the same axial angle of attack.
  • the course of the torque transmission surfaces in the circumferential direction can be seamless, i.e. without a kink. This makes it possible to finish machining all peripheral surfaces in one workpiece clamping, i.e. without re-clamping, and in particular with only one type of processing.
  • the axial angle of attack can be constant over the entire axial extent, i.e. the entire course in the axial direction, of the torque transmission surfaces.
  • the course of the torque transmission surfaces in the axial direction can be seamless, i.e. without a kink. This means that the axial angle of attack, preferably from the front side of the projection section (possibly minus a front end region in which a chamfer or the like is formed) to the front side of the main body, does not change.
  • the torque transmission surfaces can be formed by a continuous, sloping surface, i.e. in particular without depressions or steps/elevations. This can be achieved, for example, by machining a grinding wheel.
  • the continuous design has the advantage that edges and thus stress peaks are avoided.
  • the cutting head and the cutting head driver can be designed to be Z-shaped in the area of their bayonet lock.
  • the Z shape can result from the fact that the cutting head and the cutting head driver each have a pair of end faces made up of two end faces which each extend perpendicular to the axial direction and are spaced apart from one another in the axial direction, and the torque transmission surfaces which connect the respective end faces of a pair of end faces to one another each extend essentially continuously, ie apart from a transition region between the end faces and the torque transmission surfaces, obliquely to the axial direction between the end faces of the respective pair of end faces.
  • an axially outer end face of the pair of end faces can merge into the torque transmission surface via a chamfer.
  • the essentially wedge-shaped projection sections are bluntly or rectilinearly beveled on their end face/wedge corner.
  • a tip of the wedge-shaped projection sections created by the convergence of the axially outer end face and the torque transmission surface
  • an axially inner end face of the pair of end faces can merge into the torque transmission surface via a radius.
  • the essentially wedge-shaped recesses are rounded at their wedge corners.
  • the torque transmission surface can be designed as a continuously sloping surface between the chamfer and the radius. This means that the torque transmission surfaces, apart from their respective transition area to the pair of end faces, are designed as flat surfaces, i.e. without depressions, steps or elevations. This ensures torque transmission and simplifies the production of the torque transmission surfaces.
  • the torque transmission surfaces can abut one another continuously between the chamfer and the radius. This means that the wedge-shaped projection sections or the torque transmission surfaces - apart from their respective transition area to the pair of end faces - lie flat against each other over their entire extent. This means that particularly high torques can be transmitted.
  • the mutually facing axial end faces of the cutting head and cutting head driver can each be axially stepped by their respective projection section, so that a Z-shaped contour results in each case.
  • Such a Z-shaped contour has proven to be particularly advantageous in terms of its functionality and producibility.
  • the cutting tool can have at least one cooling channel, which is formed by a workpiece-side cooling channel section formed in the cutting head and a shaft-side cooling channel section formed in the cutting head driver.
  • a cooling channel for supplying cutting edges of the cutting tool with cooling lubricant extends through the entire cutting tool, is supplied at a shaft-side interface, for example in the form of a cooling lubricant supply, in the area of the cutting head driver and at a workpiece-side interface, for example in the form of a cooling lubricant outlet opening. is released again in the area of the cutting head.
  • a cooling channel for supplying cutting edges of the cutting tool with cooling lubricant extends through the entire cutting tool, is supplied at a shaft-side interface, for example in the form of a cooling lubricant supply, in the area of the cutting head driver and at a workpiece-side interface, for example in the form of a cooling lubricant outlet opening. is released again in the area of the cutting head.
  • the cutting edges can be sufficiently cooled when
  • the shaft-side cooling channel section in the area of the end face of the main body of the cutting head driver can merge into the workpiece-side cooling channel section in the area of the end face of the projection section of the cutting head. This means that the transfer of the cooling lubricant takes place in the area of the axial contact between the cutting head and the cutting head driver in order to enable a tight transfer of the cooling lubricant, especially laterally.
  • the cutting head can have at least one end cutting edge and an open area adjacent to the end cutting edge, with the cooling channel emerging from the cutting tool in the area of the open area.
  • the cooling lubricant emerges from a workpiece-side end face of the cutting tool.
  • a separate cooling channel can be provided for each end cutting edge in order to be able to supply the cooling lubricant in a targeted manner to the highly stressed areas of the cutting tool.
  • the cutting tool can have at least one helically extending circumferential cutting edge.
  • the circumferential cutting edge can originate from a cutting corner of the at least one end cutting edge.
  • the number of circumferential cutting edges can correspond to the number of end cutting edges.
  • the at least one circumferential cutting edge can be formed on the cutting head and the cutting head driver.
  • the circumferential cutting edge is not formed exclusively by the cutting head or the cutting head driver, but rather axially continuously over the extent of the cutting head and the cutting head driver.
  • a spiral of the at least one circumferential cutting edge is therefore not interrupted or changed by the multi-part design with cutting head and cutting head driver.
  • the circumferential cutting edge is thus formed axially in sections by the cutting head and axially in sections by the cutting head driver.
  • a flute adjacent to the at least one circumferential cutting edge can also be formed axially continuously over the extent of the cutting head and the cutting head driver, ie axially in sections by the cutting head and axially in sections by the cutting head driver.
  • the cutting tool can have several circumferential cutting edges, preferably two circumferential cutting edges.
  • the cutting head and the cutting head driver can each have a number of projection sections corresponding to the number of circumferential cutting edges. Accordingly, with two circumferential cutting edges, an angular range of 180° is formed, within which the two projection sections and a sufficiently large free space to enable mutual rotation of the cutting head and the cutting head driver are arranged. This has the advantage that the projection sections are sufficiently large for power transmission while ensuring rotation.
  • the cutting head driver can have two diametrically opposed projection sections, which are formed by a web extending over the entire cutting tool diameter. This means that the two projection sections of the cutting head driver are connected to one another via a central section.
  • the web can have the central section and the projection sections which extend radially outwards, for example in a wing-like manner.
  • the cutting head can have two diametrically opposed projection sections which are spaced apart from one another in the radial direction/individually/as individual pins. This means that a central recess is formed between the two projection sections of the cutting head, into which the central section of the cutting head driver can engage.
  • the cutting head can have two diametrically opposed projection sections which are formed by a web extending over the entire cutting tool diameter. That is, the two projection portions of the cutting head are connected to each other via a central portion.
  • the web can have the central section and the projection sections which extend radially outwards, for example in a fan-like manner, for example in a wing-like manner.
  • the cutting head driver can have two diametrically opposed projection sections which are spaced apart from one another in the radial direction/individually/as individual pins. This means that a central recess is formed between the two projection sections of the cutting head driver, into which the central section of the cutting head can engage.
  • an axial contact surface between the cutting head and the cutting head driver can have a central section and wing sections extending radially outwards, for example in a fan-like manner.
  • the axial contact surface is preferably formed on the web which extends over the axis of rotation, in particular over the entire cutting tool diameter. This provides a sufficient axial support surface.
  • a transition of the cooling channels between the cutting head and the cutting head driver is also arranged in the axial contact surface.
  • the wing sections can initially taper starting from the central section, in particular on both sides in the circumferential direction, and then widen again, in particular on both sides in the circumferential direction.
  • the wing sections are each designed to be waisted, ie essentially have an hourglass shape.
  • the wing sections can have, at least on one side, a substantially concavely shaped side edge, which is arranged on the contact surface for the cutting head or cutting head driver.
  • the wing sections can have substantially concavely shaped side edges on both sides.
  • One of the concavely shaped side edges is part of the chip groove and the other of the concavely shaped side edges is part of the contact surface for the cutting head or cutting head driver.
  • the axial contact surface can be designed to have a substantially double waist. With such a double-waisted shape, a geometry that is particularly suitable in terms of torque transmission and centering can be achieved.
  • a peripheral contact surface between the cutting head and the cutting head driver can be designed to be curved in the radial direction. This means that the contact surface on which the cutting head and the cutting head driver rest against one another in the circumferential direction/cutting direction is not aligned in a straight line or exactly or essentially in the radial direction.
  • the peripheral contact surface, which is formed on the cutting head or on the continuous web is essentially concavely curved and the complementary peripheral contact surface, which is formed on the cutting head driver or on the individual pins, is essentially convexly curved.
  • the circumferential contact surface can be used both for torque transmission between the cutting head and the cutting head driver as well as for the centered alignment of the cutting head to the cutting head driver. At the same time, stress peaks in the material are avoided.
  • the circumferential contact surface can have a radially inner section and a radially outer section (relative to the radially inner section), which serve as the torque transmission surfaces.
  • the radially inner section extends in a region spaced radially inwards relative to the tool diameter and the radially outer section extends in a region spaced radially outwards relative to the axis of rotation.
  • a surface that extends particularly long in the radial direction can be used to transmit torque.
  • the radially inner section and the radially outer section of the peripheral contact surface can serve predominantly or exclusively/solely for torque transmission. Alternatively, there may be other areas that can be used Contribute torque transmission between the cutting head and the cutting head driver.
  • the radially outer section can extend up to the tool diameter (seen in the radial direction). Due to the radially external arrangement of the radially outer section, a transmission of particularly high torques can be ensured.
  • the radially inner section can extend (seen in the radial direction) up to the axis of rotation.
  • the radially inner area can also be used for torque transmission.
  • the radially inner section of the peripheral contact surface which is formed on the cutting head or on the continuous web, can be essentially convexly curved in the radial direction and the radially inner section of the complementary peripheral contact surface, which is on the cutting head driver or is formed on the individual pins, be curved essentially concavely in the radial direction.
  • the radially inner section can be arranged in the region of the central section of the axial contact surface.
  • the radially outer section of the peripheral contact surface which is formed on the cutting head or on the continuous web, can be curved essentially concavely in the radial direction and the radially outer section of the complementary peripheral contact surface, which is on the cutting head driver or is formed on the individual pins, be essentially convexly curved in the radial direction.
  • the radially outer section can be arranged in the area of the wing section, in particular in the widening area of the wing section, of the axial contact surface.
  • the radially inner section and the radially outer section can each have a radius of curvature that is eccentric to the axis of rotation, ie is not concentric to the axis of rotation. This ensures that the torques acting during workpiece machining can be transmitted between the cutting head and the cutting head driver.
  • the circumferential contact surface can have a clamping section lying in the radial direction between the radially inner section and the radially outer section, which serves predominantly or exclusively as a clamping surface.
  • the intermediate clamping section can be designed in such a way that it hardly or does not contribute to torque transmission.
  • the torque transmission surfaces formed by the radially inner section and the radially outer section can extend in the axial direction over a maximum of half of the axial extent of the projection sections. This means that the chamfer and the radius, via which the torque transmission surfaces merge into the end faces of the projection section or main body, take up a large part of the axial extent of the respective projection section.
  • the projection portion of the cutting head may have a substantially oval cross section.
  • the projection section of the cutting head can have two essentially semicircular or C-shaped circumferential sections which are opposite in the circumferential direction and two essentially rectilinear circumferential sections which are opposite in the circumferential direction.
  • One of the semicircular or C-shaped peripheral sections merges into one of the rectilinear peripheral sections.
  • the rectilinear peripheral sections connect tangentially to the semicircular or C-shaped peripheral sections.
  • the torque transmission surface of the cutting head can be formed by (outer) peripheral surfaces (alternatively by (inner) peripheral surfaces) of the projection portion of the cutting head.
  • the torque transmission surface of the cutting head driver can be formed by (inner) peripheral surfaces (alternatively by (outer) peripheral surfaces) of the projection portion of the cutting head driver.
  • the torque transmission surfaces of the cutting head and the cutting head driver are in particular those peripheral surfaces on which the cutting head and the cutting head driver rest against one another in the connected state.
  • the torque transmission surfaces can be formed by curved sections with different radii.
  • the essentially semicircular or C-shaped peripheral sections are in turn formed by individual curvature sections, so that the curvature changes over the curved course of the peripheral sections.
  • the curved sections can be designed in such a way that they merge into one another over the circumferential contour, i.e. the course in the circumferential direction/the circumferential extension. This means that the transition between the different radii takes place without a kink or visible edge/seam.
  • the torque transmission surfaces can have at least a first curvature section and a second curvature section lying behind it in the cutting direction, in particular immediately, the second curvature section having a smaller radius than the first curvature section.
  • the first curved section may have a smaller radius than the second curved section.
  • the radius of the first curvature section and the radius of the second curvature section have different centers. This has the advantage that a seamless transition between the two curved sections can be implemented.
  • the center of the second curvature section can lie behind the center of the first curvature section in the cutting direction, preferably by a small amount, in particular by 0.1 mm to 0.4 mm.
  • the center of the second curvature section can lie in front of the center of the first curvature section in the cutting direction, preferably by a small amount, in particular by 0.1 mm to 0.4 mm. Due to the slight offset of the center points, an edge-free transition can be created between the two curved sections.
  • the torque transmission surfaces can have a third curvature section lying in the cutting direction, in particular directly behind the second curvature section, the radius of which is significantly larger than the radius of the first and/or second curvature section.
  • the third curvature section can be designed to be almost straight. This makes inserting the cutting head into the cutting head driver easier.
  • a circumferential surface of the cutting head can be essentially convexly curved in the area of the circumferential contour in which it rests on the cutting head driver in the connected state and essentially in the area of the circumferential contour in which it does not rest on the cutting head driver in the connected state be concavely curved.
  • the cutting head can have a centering projection, preferably circular in cross section and/or preferably aligned concentrically to the axis of rotation of the cutting tool, which projects from the end face of the projection portion of the cutting head in the axial direction. This causes the cutting head to be axially inserted into the cutting head driver guided, while at the same time the ability to rotate to engage the bayonet lock remains possible.
  • the torque transmission surface of the cutting head can have an axial extension that is essentially twice as large as the hundredweight projection. This ensures sufficient centering when inserting the cutting head.
  • FIG. 1 is a perspective view of a portion of a cutting tool including a cutting head and a cutting head driver according to a first embodiment of the present disclosure
  • Fig. 2 is a perspective view of the cutting tool in an unconnected state of the cutting head and the cutting head driver;
  • Fig. 3 is a side view of the cutting tool in the unconnected condition
  • Fig. 4 is a side view of the cutting tool in a connected state of the cutting head and the cutting head driver;
  • Fig. 5 is a side view of the cutting tool in the connected state, rotated from Fig. 4 about a longitudinal axis of the cutting tool;
  • Fig. 6 is an enlarged view of a detail from Fig. 5;
  • Figure 7 is a bottom view of the cutting head
  • Figure 8 is a top view of the cutting head driver; 9 is a perspective view of a portion of the cutting tool according to a second embodiment of the present disclosure;
  • Fig. 10 is a perspective view of the cutting tool in an unconnected state of the cutting head and the cutting head driver;
  • Fig. 11 is a side view of the cutting tool in the unconnected condition
  • Figs. 12 and 12A are side views of the cutting tool in a connected state of the cutting head and the cutting head driver;
  • Fig. 13 is one of Figs. 12 and 12A are side views of the cutting tool in the connected state, rotated about a longitudinal axis of the cutting tool;
  • Fig. 14 is an enlarged view of a detail of Fig. 12A;
  • Fig. 15 is a bottom view of the cutting head
  • Fig. 16 is a top view of the cutting head driver
  • Figs. 17 and 18 are perspective views of the cutting head and cutting head driver
  • Figs. 19 and 20 are perspective views of the cutting head according to a third embodiment of the present disclosure.
  • Fig. 21 is a bottom view of the cutting head
  • Figs. 22 and 23 are side views of the cutting head
  • FIG. 24 is a perspective view of the cutting head driver according to the second embodiment of the present disclosure
  • Fig. 25 is a top view of the cutting head driver
  • Fig. 26 is a longitudinal sectional view of the cutting head driver
  • Fig. 27 is an illustration of the principle of a prior art cutting tool.
  • Fig. 28 is an illustration of the principle of the cutting tool according to the present disclosure.
  • Figs. 1 to 8 show different representations of a cutting tool 2 according to a first embodiment of the present disclosure or sections and individual components of the same.
  • the cutting tool 2 is used for machining workpieces.
  • the cutting tool 2 is designed as a shank tool, such as a milling cutter or a drill.
  • the cutting tool 2 has at least one end cutting edge, preferably several, in the illustrated embodiment two, end cutting edges 4, which are formed on an end face of the cutting tool 2.
  • a (main) open area 6 adjoins each of the front cutting edges 4.
  • the cutting tool 2 has at least one circumferential cutting edge, preferably several, in the illustrated embodiment two, circumferential cutting edges 8.
  • the circumferential cutting edges 8 extend helically over an outside of the cutting tool 2.
  • each circumferential cutting edge 8 can extend from a cutting corner of one of the end cutting edges 4.
  • the cutting tool 2 is constructed in several parts and has a cutting head 10 (cutting attachment) and a cutting head driver 12 (carrier).
  • the cutting head 10 and the cutting head driver 12 close in the axial direction of the cutting tool 2 to each other, with the cutting head 10 forming a workpiece-side section and the cutting head driver 12 forming a shaft-side section.
  • the cutting head 10 and the cutting head driver 12 can be (detachably) connected to one another via a type of bayonet lock/bayonet connection. In a connected state, the cutting head 10 and the cutting head driver 12 are connected/attached to one another in a torque-transmitting manner and in an axially fixed manner.
  • the cutting head 10 and the cutting head driver 12 can be connected to one another in a form-fitting manner.
  • a second direction of rotation opposite to the first direction of rotation
  • the cutting head 10 and the cutting head driver 12 can be detached from one another.
  • the end cutting edges 4 of the cutting tool 2 are formed on the cutting head 10.
  • the circumferential cutting edges 8 of the cutting tool 2 are formed both (in sections) on the cutting head 10 and (in sections) on the cutting head driver 12.
  • the circumferential cutting edges 8 thus extend continuously in the axial direction, i.e. also over the connection between the cutting head 10 and the cutting head driver 12. Consequently, the bayonet connection, via which the cutting head 10 and the cutting head driver 12 can be connected, is arranged within a cutting section of the cutting tool 2.
  • the cutting head 10 and the cutting head driver 12 can be made/designed/manufactured from different materials/materials.
  • the cutting head 10 can be made of hard metal.
  • the cutting head driver 12 can be made of steel.
  • the cutting head 10 and the cutting head driver 12 can both be made from the same material group, for example both made of steel, as long as their material properties differ and it is ensured that the bayonet-like connection between sections of the cutting head 10 and the cutting head driver 12 with a Z Angle geometry or with two mutually engaging wedge geometries, the loads resulting from the wedge forces are transferred to the section that is in comparison the more flexurally elastic, softer or less brittle section.
  • the cutting head 10 has a main body 14, from the end face of which a projection section 16 projects axially.
  • the projection section 16 projects in the direction of the cutting head driver 12 and is used for bayonet-like attachment to the cutting head driver 12.
  • the projection section 16 is designed to be undercut in the axial direction and has a torque transmission surface 18, which is preferably designed to be set in the axial direction.
  • the torque transmission surface 18 is preferably designed essentially in the radial direction, i.e. perpendicular to the tangential direction, in order to be able to transmit a torque.
  • an end face of the cutting head 10 (facing the cutting head driver 12/facing away from the workpiece) is designed to be axially stepped, so that a substantially Z-shaped contour results.
  • the Z-shaped contour is formed by an axial end face 20 of the projection section 16, the axially positioned torque transmission surface 18 of the projection section 16 and an axial end face 22 of the main body 14.
  • the axial end face 20 of the projection section 16 merges into the torque transmission surface 18 via a chamfer 19.
  • the torque transmission surface 18 merges into the axial end face 22 of the main body 14 via a radius 21.
  • the cutting head 10 has a number of projection sections 16 corresponding to the number of peripheral cutting edges 8. This means that the cutting head 10 in the illustrated embodiment has two projection sections 16. The two projection sections 16 are arranged diametrically opposite one another. The projection portions 16 of the cutting head 10 are spaced apart/individually in the radial direction. This means that they are separated from each other via a central recess/are not continuously connected to one another via the cutting tool diameter. Alternatively, the projection sections 16 (if the cutting head driver 12 is designed accordingly) can also be formed by a web that extends continuously over the cutting tool diameter.
  • the cutting head driver 12 has a main body 24, from the end face of which a projection section 26 projects axially.
  • the projection section 26 protrudes in the direction of the cutting head 10 and is used for bayonet-like attachment to the cutting head 10.
  • the projection section 26 is designed to be undercut in the axial direction and has a torque transmission surface 28, which is preferably designed to be set in the axial direction.
  • the torque transmission surface 28 is preferably designed essentially in the radial direction, i.e. perpendicular to the tangential direction, in order to be able to transmit torque.
  • an end face of the cutting head driver 12 (facing/facing away from the shaft) of the cutting head driver 12 is designed to be axially stepped, so that a substantially Z-shaped contour results.
  • the Z-shaped contour is formed by an axial end face 30 of the projection section 26, the axially positioned torque transmission surface 28 of the projection section 26 and an axial end face 32 of the main body 24.
  • the axial end face 30 of the projection section 26 merges into the torque transmission surface 28 via a chamfer 29.
  • the torque transmission surface 28 merges into the axial end face 32 of the main body 24 via a radius 31.
  • the cutting head driver 12 has a number of projection sections 26 corresponding to the number of circumferential cutting edges 8. This means that the cutting head driver 12 has two projection sections 26 in the illustrated embodiment.
  • the two projection sections 26 are arranged diametrically opposite one another.
  • the two projection sections 26 are formed by a web extending over the entire cutting tool diameter. That is, the projection portions 26 are connected to each other continuously across the cutting tool diameter.
  • the projection sections 26 (if the cutting head 10 is designed accordingly) can also be spaced apart from one another/individually in the radial direction.
  • the torque transmission surface 18 of the cutting head 10 and the torque transmission surface 28 of the cutting head driver 12 are designed to be complementary to one another, so that they lie against one another (flatly) in the connected state. Due to the adjusted design/inclination of the torque transmission surfaces 18, 28 and the resulting leverage, the cutting head 10 and the cutting head driver 12 are pressed axially towards one another/axially clamped in the connected state.
  • the projection sections 16, 26 of the cutting head 10 and the cutting head driver 12 are dimensioned such that the end face 20 of the projection section 16 of the cutting head 10 in the connected state rests on the end face 32 of the main body 24 of the cutting head driver 12 in the axial direction.
  • the projection section 16 of the cutting head 10 is therefore supported on the main body 24 of the cutting head driver 12.
  • the end face 30 of the projection section 26 of the cutting head driver 12 in the connected state is spaced from the end face 22 of the main body 14 of the cutting head 10 with axial play.
  • the main body 14 of the cutting head 10 is therefore not supported on the projection section 26 of the cutting head driver 12.
  • the projection section 16 of the cutting head 10 can be designed to be (slightly) longer in the axial direction than the projection section 26 of the cutting head driver 12.
  • the cutting tool 2 has at least one cooling channel, preferably several, in the illustrated embodiment two cooling channels 34.
  • the cooling channels 34 serve to supply cooling lubricant to stressed points of the cutting tool 2, in particular to the cutting edges, such as the end cutting edges 4.
  • the cooling channels 34 can emerge from the cutting tool 2 in the area of the open spaces 6.
  • Figs. 9 to 18 show a second embodiment of the cutting tool 2.
  • the second embodiment has largely the same features as the first embodiment, so only the differences will be explained below.
  • the circumferential contact surface 86 has a clamping section 92 lying in the radial direction between the radially inner section 88 and the radially outer section 90, which serves primarily or exclusively as a clamping surface (and preferably hardly or not for torque transmission). That is, the radially inner portion 88 and the radially outer portion 90 are spaced apart from each other in the radial direction.
  • Figs. 19 to 23 show different views of the cutting head 10.
  • the cutting head 10 has the main body 14, from the end face of which the projection section 16, which is undercut in the axial direction, projects axially.
  • the projection portion 16 of the cutting head 10 has a substantially oval cross section.
  • the projection section 16 has two opposing first peripheral sections 42 and two opposing second peripheral sections 44, each of which merges into one another.
  • the first peripheral sections 42 are convexly curved and have a substantially semicircular or C-shaped contour.
  • the second peripheral sections 44 have an essentially straight or very slightly concave curved contour.
  • the first circumferential sections 42 are each composed of several curved sections 46, 48 with different radii.
  • the first peripheral sections 42 each have a first curved section 46 and a second curved section 48 lying behind it in the cutting direction, in particular immediately.
  • the first curvature section 46 extends approximately over an eighth of a circle.
  • the second curvature section 48 extends approximately over a quarter circle.
  • the second curvature section 48 has a smaller radius than the first curvature section 46.
  • the radius of the first curvature section 46 and the radius of the second curvature section 48 have different center points.
  • the center of the second curved section 48 lies in the cutting direction, preferably by a small amount, in particular by 0.1 mm to 0.4 mm, behind the center of the first curved section 46.
  • the first peripheral sections 42 each merge into the second peripheral sections 44 via a transition section 50.
  • the transition section 50 lies in the cutting direction, in particular immediately behind the second curvature section 48.
  • the transition section 50 has a radius that is larger than the radius of the second curvature section 48 is.
  • the transition section 50 is adjoined in the circumferential direction by the second circumferential section 44, which in the illustrated embodiment is formed by a third curvature section 52, which is slightly convexly curved. This means that the radius of the third curvature section 52 is significantly larger, for example at least 8 times as large, as the radius of the second curvature section 48.
  • One of the first peripheral sections 42 in turn adjoins the second peripheral section 44, with an edge 54 being formed between the two peripheral sections 42, 44.
  • Figs. 22 and 23 show side views of the cutting head 10. It can be seen therein that the projection section 16 extends directly from the main body 14. This results in the Z shape, which is formed by the end face of the main body 14, the torque transmission surface 18 and the end face of the projection section 16.
  • the projection section 16 is essentially trapezoidal in longitudinal section, with the oblique side surfaces of the trapezoid forming the torque transmission surface 18 of the cutting head 10.
  • the torque transmission surface 18 is inclined to the axial direction with an axial angle of attack, preferably from 2° to 5°, in particular from 3°.
  • the axial angle of attack is constant at least over the entire circumferential contour of the torque transmission surface, in particular over the entire circumferential contour of the projection section 16, ie both in the area of the first circumferential sections 42 and in the area of the second circumferential sections 44.
  • the radii of the different curvature sections 46, 48 or the transition section 50 or the circumferential sections 42, 44 are intersected with one another.
  • the axial angle of attack is constant over the entire axial extent of the projection section 16. This means that in the area of the torque transmission surface 18 or in the area of the first peripheral sections 42 (and possibly also the second peripheral sections 44) no steps, elevations and depressions are formed in the side surfaces of the projection section 16, but rather the side surfaces are a continuous sloping surface . In other words the Z shape of the projection section 16 is the same over the entire circumferential contour.
  • the projection section 16 is approximately 1.5 to 3 times, preferably approximately twice, as wide as the projection section 16 extends in the axial direction.
  • the axial dimensioning can ensure a sufficiently large axial undercut.
  • the cutting head 10 has a centering projection 56, preferably circular in cross section and/or preferably aligned concentrically to the axis of rotation of the cutting tool 2.
  • the hundredweight projection 56 projects from the end face of the projection section 16 of the cutting head 10 in the axial direction.
  • the hundredweight projection 56 engages in a correspondingly designed recess 58 in the cutting head driver 12.
  • the projection section 16 or the torque transmission surface 18 of the cutting head 10 has an axial extension that is essentially twice as large as the hundredweight projection 56.
  • Figs. 24 to 26 show different views of the cutting head driver 12.
  • the cutting head driver 12 has the main body 24, from the end face of which the projection section 26, which is undercut in the axial direction, projects axially.
  • the projection section 26 is formed by two diametrically opposed webs 60, which comprise a recess whose shape corresponds to the shape of the projection section 16 of the cutting head 10.
  • the projection section 16 of the cutting head lies with its outer peripheral surfaces, which serve as a torque transmission surface 18 of the cutting head 10, on inner circumferential surfaces of the projection section 26 of the cutting head driver 12, which in turn serve as a torque transmission surface 28 of the cutting head driver 12.
  • the shape of the inner peripheral surfaces of the cutting head driver 12 corresponds to the shape of the first peripheral sections 42 of the cutting head 10.
  • the inner peripheral surfaces of the cutting head driver 12 and the webs 60 are each different several curvature sections with different radii.
  • the webs 60 each have a first curvature section 62 and a second curvature section 64 lying behind it in the cutting direction, in particular immediately.
  • the first curvature section 62 extends approximately over an eighth of a circle.
  • the second curvature section 64 extends approximately over a quarter circle.
  • the second curvature section 64 has a smaller radius than the first curvature section 62.
  • the radius of the first curvature section 62 and the radius of the second curvature section 64 have different center points.
  • the center of the second curved section 64 lies in the cutting direction, preferably by a small amount, in particular by 0.1 mm to 0.4 mm, behind the center of the first curved section 62.
  • a transition section 66 adjoins the two curved sections 62, 64.
  • the transition section 66 lies in the cutting direction, in particular immediately behind the second curvature section 64.
  • the transition section 66 has a radius that is significantly larger than the radius of the second curvature section 64, so that the transition section 66 is, for example, approximately straight.
  • the inner circumferential surfaces of the webs 60 serving as torque transmission surfaces 28 are inclined to the axial direction at the axial angle of attack, preferably from 2° to 5°, in particular from 3°.
  • the axial angle of attack of the torque transmission surface 28, i.e. the axial adjustment of the cutting head driver 12 corresponds to the axial angle of attack of the torque transmission surface 18, i.e. the axial angle of attack of the cutting head 10.
  • the axial angle of attack is constant over the entire circumferential contour of the torque transmission surface 28.
  • the radii of the different curvature sections 62, 64 or the transition section 66 are intersected with one another.
  • the axial angle of attack is constant over the entire axial extent of the projection section 26. This means that in the area of the torque transmission surface 28 there are no steps, Elevations and depressions are formed, but the side surfaces are a continuous sloping surface. In other words, the Z shape of the webs 60 is the same over the entire circumferential contour.
  • the recess 58 is formed in the cutting head driver 12, into which the centering projection 56 engages when the cutting tool 2 is connected.
  • the recess 58 is designed as a through hole.
  • the recess 58 can also be designed as a blind hole, even if this is not shown.
  • Figs. 27 and 28 show representations of the principle of a cutting tool known from the prior art and the cutting tool 2 according to the present disclosure, on the basis of which a crucial aspect of the cutting tool, which is common to the three embodiments already described, is explained again.
  • Figs. 27 and 28 are each sectional views in a plane that is offset parallel to a longitudinal plane containing the axis of rotation.
  • a force always acts on the torque transmission surfaces 18, 28 during workpiece machining, which, due to the axial adjustment of the torque transmission surfaces 18, 28, leads to an expansion of the respective wedge-shaped recesses and thus a tensile stress in the radius 21, 31.
  • the wedge support of the cutting head 10 i.e. the axial contact with the cutting head driver 12
  • induces a frictional force which acts transversely to the axial direction in the direction of the torque transmission surfaces 18, 28.
  • This frictional force thus counteracts the spreading of the cutting head 10 (and not, as in the prior art, the spreading of the cutting head driver 12), which in turn allows the bending stress in the area of the radius 21 to be reduced.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling Processes (AREA)
  • Drilling Tools (AREA)

Abstract

L'invention concerne un outil de coupe (2) pour l'usinage de pièces par enlèvement de copeaux, comportant une tête de coupe (10) et un entraîneur de tête de coupe (12) pouvant être relié à la tête de coupe (10), cette tête de coupe (10) et l'entraîneur de tête de coupe (12) comportant respectivement un corps principal (14, 24) à partir de la face frontale duquel une partie en saillie (16,26) contre-dépouillée dans la direction axiale fait saillie axialement, comportant respectivement des surfaces de transmission de couple (18, 28) qui sont respectivement formées de manière complémentaire, contre-dépouillées dans la direction axiale et de préférence agencées axialement et qui se touchent à l'état de liaison, les parties en saillie (16, 26) étant dimensionnées de manière qu'une face frontale (20) de partie en saillie (16) de la tête de coupe (10) repose à l'état de liaison dans la direction axiale contre une face frontale (32) du corps principal (24) de l'entraîneur de tête de coupe (12).
EP23712195.9A 2022-03-16 2023-03-15 Outil de coupe équipé d'une tête de coupe et d'un entraîneur de tête de coupe Pending EP4493346A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102022106206.6A DE102022106206A1 (de) 2022-03-16 2022-03-16 Schneidwerkzeug mit Schneidkopf und Schneidkopfmitnehmer
DE102022112301.4A DE102022112301A1 (de) 2022-05-17 2022-05-17 Schneidwerkzeug mit Schneidkopf und Schneidkopfmitnehmer
PCT/EP2023/056605 WO2023175004A1 (fr) 2022-03-16 2023-03-15 Outil de coupe équipé d'une tête de coupe et d'un entraîneur de tête de coupe

Publications (1)

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EP4493346A1 true EP4493346A1 (fr) 2025-01-22

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EP23712195.9A Pending EP4493346A1 (fr) 2022-03-16 2023-03-15 Outil de coupe équipé d'une tête de coupe et d'un entraîneur de tête de coupe

Country Status (4)

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US (1) US20250144716A1 (fr)
EP (1) EP4493346A1 (fr)
JP (1) JP2025506530A (fr)
WO (1) WO2023175004A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4563271A1 (fr) * 2023-11-30 2025-06-04 AB Sandvik Coromant Outil de coupe rotatif avec tête de coupe remplaçable

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE511429C2 (sv) 1996-09-13 1999-09-27 Seco Tools Ab Verktyg, skärdel, verktygskropp för skärande bearbetning samt metod för montering av skärdel till verktygskropp
IL120948A0 (en) 1997-05-29 1997-09-30 Iscar Ltd Cutting tool assembly
IL181296A0 (en) * 2007-02-12 2007-07-04 Iscar Ltd Tool with releasably mounted self-clamping cutting head
DE102012200690B4 (de) 2012-01-18 2021-06-17 Kennametal Inc. Rotationswerkzeug sowie Schneidkopf für ein solches Rotationswerkzeug
DE102013205889B3 (de) 2013-04-03 2014-05-28 Kennametal Inc. Kupplungsteil, insbesondere Schneidkopf für ein Rotationswerkzeug sowie ein derartiges Rotationswerkzeug
US10071430B2 (en) * 2015-10-07 2018-09-11 Kennametal Inc. Cutting head, rotary tool and support for the rotary tool and for the accommodation of the cutting head
DE102017214165B4 (de) 2017-08-14 2021-10-14 Kennametal Inc. Rotationswerkzeug sowie Träger und Schneideinsatz für ein solches

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WO2023175004A1 (fr) 2023-09-21
JP2025506530A (ja) 2025-03-11
US20250144716A1 (en) 2025-05-08

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