CN104907613A - Replaceable cutter head type drill bit - Google Patents
Replaceable cutter head type drill bit Download PDFInfo
- Publication number
- CN104907613A CN104907613A CN201510252221.2A CN201510252221A CN104907613A CN 104907613 A CN104907613 A CN 104907613A CN 201510252221 A CN201510252221 A CN 201510252221A CN 104907613 A CN104907613 A CN 104907613A
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- CN
- China
- Prior art keywords
- supporting
- cutter
- drill bit
- cutter head
- bit
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- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/02—Twist drills
-
- 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
- B23B—TURNING; BORING
- B23B2205/00—Fixation of cutting inserts in holders
- B23B2205/04—Fixation screws, bolts or pins of particular form
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
The invention discloses a replaceable cutter head type drill bit. Currently, a replaceable cutter head type drill bit high in machining accuracy, high in mounting accuracy and stable in cutting does not exist. The drill bit comprises a cutter rod, a cutter head, a number one screw and a number two screw. The cutter rod comprises a cutter rod body. The drill bit is characterized in that a number one boss and a number two boss are arranged at one end of the cutter rod body, a number one supporting plane and a number one fixing screw hole are formed in the number one boss, the axis of the number one fixing screw hole is perpendicular to the number one supporting plane, a locating hole is formed in the bottom of a blade groove, a number one supporting face and a number two supporting face are arranged on the two sides of a cutter head body, the number one supporting face and the number two supporting face are of a plane structure, a locating column is placed in the locating hole, the cutter head body is placed in the blade groove, the number one supporting face is tightly attached to the number one supporting plane, and the number two supporting face is tightly attached to the number two supporting plane. The drill bit is high in machining accuracy, high in mounting accuracy, stable in rotating and stable in cutting, the cutter head can be abandoned, and service life is long.
Description
Technical field
The present invention relates to a kind of drill bit, especially relate to a kind of interchangeable cutter bit type drill bit, be mainly used in the aperture knife tool of mechanical processing industry, belong to a kind of five metals machining tool.
Background technology
The specification of carbide alloy class fluted drill conventional in existing market is all less, the fluted drill of the carbide alloy class of large gauge is in constantly researching and developing, because existing carbide alloy class fluted drill adopts monolithic construction usually, namely be non-removable between knife bar and cutter head, adopt between knife bar and cutter head and be welded and fixed, cause the production cost of carbide alloy class fluted drill high, resource utilization is low, it is particularly evident that this embodies in large gauge carbide alloy class fluted drill, in addition, also make the processing of carbide alloy class fluted drill not easily, processed complex, service life is short.
The drill bit also having some cutter heads interchangeable now, if publication date is on 01 04th, 2012, publication number is in the Chinese patent of CN102303152A, disclose a kind of spiral bit of changeable blade, it comprises a twist drill rods, on drilling rod two debris front of the slot notch between laterally have a blade installation slot, the Lower Half of blade installation slot is one and amplifies at the bottom of the V-shaped groove of angle, two side at the bottom of V-shaped groove is provided with a locking hole, the side of locking hole is countersunk screw holes, opposite side is unthreaded hole, a blade is completely combined with in blade installation slot, it blade upper surface is rotary-cut blade, blade bottom be one with the positioning body matched at the bottom of V-shaped groove, positioning body is provided with through hole with locking hole relevant position, a countersunk head screw be deep in insert through hole and opposite side unthreaded hole is installed in locking hole.And for example publication date is on 08 23rd, 2006, publication number is in the Chinese patent of CN2808378, disclose a kind of replaceable carbide drill, it comprises the fixed part of drilling rod body, blade and fastening blade, the dislocation of blade both sides in echelon, insert bottom center is with an alignment pin, and drilling rod body is provided with locating hole; Alignment pin and blade are integrated, and match with locating hole, for the location of blade on drilling rod body; Blade both sides have a fixing hole separately, fixed part and this two fixing holes of fastening blade are connected, by carrying a circular alignment pin in insert bottom center, blade both sides have a screw with being centrosymmetric separately, drill bit are assembled easier.The machining accuracy of the drill bit that these cutter heads existing are interchangeable is not high, and installation accuracy is not high, rotates steady not, cuts steady not.
In sum, also do not have one to meet reasonable in design at present, machining accuracy is high, and installation accuracy is high, stability of rotation, stable cutting, and cutter head can be given up simultaneously, the interchangeable cutter bit type drill bit of long service life.
Summary of the invention
The object of the invention is to overcome above shortcomings in prior art, and provide a kind of reasonable in design, machining accuracy is high, and installation accuracy is high, stability of rotation, stable cutting, and cutter head can be given up, the interchangeable cutter bit type drill bit of long service life.
The present invention's adopted technical scheme that solves the problem is: this interchangeable cutter bit type drill bit comprises knife bar, cutter head, a screw and No. two screws, described knife bar comprises cutter bar body, described cutter bar body is provided with chip area, described cutter head comprises bit body and locating dowel, one end of described locating dowel is fixed on one end of bit body, the other end of described bit body is provided with apex point, with main cutting edge and web thinning on described apex point, its design feature is: one end of described cutter bar body is provided with a boss and No. two boss, a described boss is provided with a supporting plane and a fixing screw hole, the axis of a described fixing screw hole is vertical with a supporting plane, described No. two boss are provided with No. two supporting planes and No. two fixing screw holes, the axis of described No. two fixing screw holes is vertical with No. two supporting planes, insert groove is formed between a described supporting plane and No. two supporting planes, the bottom of described insert groove is provided with locating hole, the both sides of described bit body are provided with a supporting surface and No. two supporting surfaces, this supporting surface and No. two supporting surfaces are planar structure, a screw and No. two screws are provided with in described bit body, one end and a supporting surface of a described screw flush, one end and No. two supporting surfaces of described No. two screws flush, described locating dowel is arranged in locating hole, described bit body is arranged in insert groove, a described supporting surface is close to a supporting plane, described No. two supporting surfaces are close to No. two supporting planes, a described screw thread is connected in a screw and a fixing screw hole, described No. two screw threads are connected in No. two screws and No. two fixing screw holes.
As preferably, be provided with inner cooling channel in cutter bar body of the present invention, on the back-end central of shank of the import position cutter bar body of described inner cooling channel or the cylindrical of shank, the outlet of this inner cooling channel is arranged in blade end face or chip area by cutter head place.
As preferably, a supporting plane of the present invention is after knife bar axis rotates 180 degree, and No. two supporting plane overlaps; A described supporting surface is after cutter head axis revolves turnback, and No. two supporting surface overlaps.
As preferably, a boss of the present invention is after knife bar axis rotates 180 degree, and No. two boss overlaps.
As preferably, a supporting plane of the present invention and No. two supporting planes parallel, and this supporting plane and No. two supporting planes all parallel with knife bar axis, and a described supporting plane and No. two supporting planes are all perpendicular to the bottom surface of insert groove; The axis of a described screw is vertical with a supporting surface, and the axis of described No. two screws is vertical with No. two supporting surfaces.
As preferably, web thinning of the present invention is X-type structure, and described main cutting edge adopts wave edge structure.
As preferably, the outer wall of bit body of the present invention is provided with negative cutting edge 25 and cylindrical dorsal horn 210.
As preferably, the quantity of chip area 12 of the present invention is two, and described chip area is straight groove structure or helical groove structure.
As preferably, the axis of locating hole of the present invention and cutter spindle line overlap.
As preferably, a screw thread of the present invention is connected in turn in a screw and a fixing screw hole, and described No. two screws are threaded in No. two screws and No. two fixing screw holes successively.
The present invention compared with prior art, has the following advantages and effect: structure is simple, reasonable in design, stability of rotation, stable cutting, and cutter head can be given up, and just can realize the recycling of knife bar, long service life by changing cutter head.A supporting surface is close to a supporting plane, and No. two supporting surfaces are close to No. two supporting planes, and make knife bar play support and position-limiting action to cutter head, machining accuracy is high, and the installation accuracy of cutter head is high, guarantees the stationarity that cutter head rotates and cuts.
The structure of knife bar of the present invention is simple, reasonable in design, form insert groove between a supporting plane and No. two supporting planes, the bottom of insert groove is provided with locating hole, cutter head is fixed in insert groove, a supporting plane and No. two supporting planes play good support and position-limiting action to cutter head, and machining accuracy is high, stability of rotation, cutter head convenient mounting and clamping, firmly, cutter head can be given up, long service life, and chip removal is more smooth and easy.
The structure of cutter head of the present invention is simple, reasonable in design, design is unique, and the both sides of bit body are provided with a supporting surface and No. two supporting surfaces, machining accuracy is high, good supporting role is played to cutter head, cutter head convenient mounting and clamping, firmly, can well transmitting torque, make the more steady of the rotation of cutter head, cut more steady, and be conducive to improving machining accuracy and improving installation accuracy, improve the overall performance of drill bit.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of interchangeable cutter bit type drill bit in the embodiment of the present invention.
Fig. 2 is the right TV structure schematic diagram of Fig. 1.
Fig. 3 is the plan structure schematic diagram of Fig. 1.
Fig. 4 is the perspective view of interchangeable cutter bit type drill bit in the embodiment of the present invention.
Fig. 5 is the main TV structure schematic diagram of knife bar in the embodiment of the present invention.
Fig. 6 is the plan structure schematic diagram of Fig. 5.
Fig. 7 is the right TV structure schematic diagram of Fig. 5.
Fig. 8 is the perspective view of knife bar in the embodiment of the present invention.
Fig. 9 is the main TV structure schematic diagram in the embodiment of the present invention after cutter head amplification.
Figure 10 is the right TV structure schematic diagram of Fig. 9.
Figure 11 is the plan structure schematic diagram of Fig. 9.
Figure 12 is the perspective view in the embodiment of the present invention after cutter head amplification.
Detailed description of the invention
Below in conjunction with accompanying drawing, also by embodiment, the present invention is described in further detail, and following examples are explanation of the invention and the present invention is not limited to following examples.
Embodiment.
See Fig. 1 to Figure 12, interchangeable cutter bit type drill bit in the present embodiment comprises knife bar 1, cutter head 2, screw 3 and No. two screws 4, wherein, knife bar 1 in the present embodiment comprises cutter bar body 11, cutter bar body 11 is provided with chip area 12, the quantity of chip area 12 is two, and chip area 12 is straight groove structure or helical groove structure.
In the present embodiment, one end of cutter bar body 11 is provided with a boss 15 and No. two boss 16, a boss 15 is provided with a supporting plane 17 and a fixing screw hole 19, the axis of a fixing screw hole 19 is vertical with a supporting plane 17, the axis No. two boss 16 being provided with No. two supporting planes 18 and No. two fixing screw holes 110, No. two fixing screw holes 110 is vertical with No. two supporting planes 18.
Form insert groove 13 between a supporting plane 17 in the present embodiment and No. two supporting planes 18, the bottom of insert groove 13 is provided with locating hole 14, and the axis of locating hole 14 and knife bar axis x overlap, belong to centralized positioning.Be provided with inner cooling channel 111 in the cutter bar body 11 of the present embodiment, on the back-end central of shank of the import position cutter bar body 11 of inner cooling channel 111 or the cylindrical of shank, the outlet of this inner cooling channel 111 is arranged in blade end face or chip area 12 by cutter head place.
A supporting plane 17 in the present embodiment and No. two supporting planes 18 are all perpendicular to the bottom surface of insert groove 13; A supporting plane 17 is after knife bar axis x revolves turnback, and No. two supporting planes 18 are overlapping; A boss 15 is after knife bar axis x revolves turnback, and No. two boss 16 are overlapping; A supporting plane 17 and No. two supporting planes 18 parallel, and this supporting plane 17 and No. two supporting planes 18 all parallel with knife bar axis x.
Cutter head 2 in the present embodiment comprises bit body 21 and locating dowel 22, wherein, fixed leg 2 is cylindrical structural, and one end of locating dowel 22 is fixed on one end of bit body 21, the other end of bit body 21 is provided with apex point 23, with main cutting edge and web thinning 24 on apex point 23.In the present embodiment, the both sides of bit body 21 are provided with a supporting surface 26 and No. two supporting surfaces 27, and this supporting surface 26 and No. two supporting surfaces 27 are planar structure, and a supporting surface 26 is after cutter head axis y revolves turnback, and No. two supporting surfaces 27 are overlapping.A screw 28 and No. two screws 29 are provided with in the present embodiment bit body 21, one end of a screw 28 and a supporting surface 26 flush, one end of No. two screws 29 and No. two supporting surfaces 27 flush, the axis of a screw 28 is vertical with a supporting surface 26, and the axis of No. two screws 29 is vertical with No. two supporting surfaces 27.
Web thinning 24 in the present embodiment is generally X-type structure, the angle of apex point 23 is generally 135 degree, main cutting edge adopts wave edge structure usually, the outer wall of bit body 21 can be provided with cylindrical dorsal horn 210 or relief angle clear sword to foreign round, and the outer wall of bit body 21 also can be provided with negative cutting edge 25.
Locating dowel 22 in the present embodiment is arranged in locating hole 14, bit body 21 is arranged in insert groove 13, a supporting surface 26 is close to a supporting plane 17, No. two supporting surfaces 27 are close to No. two supporting planes 18, make knife bar 1 pair of cutter head 2 play support and position-limiting action, guarantee the stationarity that cutter head 2 rotates and cuts.A screw 3 is threaded in a screw 28 and a fixing screw hole 19, and No. two screws 4 are threaded in No. two screws 29 and No. two fixing screw holes 110, thus cutter head 2 and knife bar 1 are fixed firmly.Under normal circumstances, screw 3 screw thread is connected in turn in a screw 28 and a fixing screw hole 19, and No. two screws 4 are threaded in No. two screws 29 and No. two fixing screw holes 110 successively.
Knife bar 1 in the present embodiment can facilitate, firmly clamping cutter head 2, and all-in-one-piece drill bit is changed to head replaceable drill bit, and cutter head adopts center positioning hole, screw and insert groove 13 to fix.Chip area 12 in the present embodiment can strengthen cross section, forms the chip area 12 of super large, this cutting-tool's used life is lengthened, cost reduction, and chip area 12 cross section of super large, clamping screw hole and insert groove, make it can be applicable to the cutter of multiple specification.The present invention can pass through clip type fixturing blade, can adopt self-control blade, and to improve drill bit service efficiency and service life, raising machining accuracy, more firm when making cutter head clamping on knife bar, drilling is more steady, and chip removal is more smooth and easy.
Cutter head 2 in the present embodiment can facilitate, firmly carry out clamping, is head replaceable drill bit by all-in-one-piece drilling-bit improvement, and cutting-tool's used life is extended, and cost reduces.Cutter head in the present embodiment can adopt cylinder step excircle orientation, and screws clamp is fixed, and blade can have cylinder step excircle orientation and screw hole, and cutting position can have wave edge, drill point angle, X-type web thinning and cylindrical dorsal horn.Fixed bit of the present invention has insert groove and screw hole, cuts the tip shapes that position has X-type web thinning, drill point angle and cylindrical dorsal horn etc. special, tool sharpening can be made wider general.The present invention can pass through clip type clamping cutter head, can adopt self-control cutter head, improves drill bit service efficiency and service life, raising machining accuracy.
In addition, it should be noted that, the specific embodiment described in this description, the shape, institute's title of being named etc. of its parts and components can be different, and the above content described in this description is only to structure example of the present invention explanation.The equivalence change that structure, feature and the principle of all foundations described in inventional idea of the present invention are done or simple change, be included in the protection domain of patent of the present invention.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment; only otherwise depart from structure of the present invention or surmount this scope as defined in the claims, protection scope of the present invention all should be belonged to.
Claims (10)
1. an interchangeable cutter bit type drill bit, comprise knife bar, cutter head, a screw and No. two screws, described knife bar comprises cutter bar body, described cutter bar body is provided with chip area, described cutter head comprises bit body and locating dowel, one end of described locating dowel is fixed on one end of bit body, the other end of described bit body is provided with apex point, with main cutting edge and web thinning on described apex point, it is characterized in that: one end of described cutter bar body is provided with a boss and No. two boss, a described boss is provided with a supporting plane and a fixing screw hole, the axis of a described fixing screw hole is vertical with a supporting plane, described No. two boss are provided with No. two supporting planes and No. two fixing screw holes, the axis of described No. two fixing screw holes is vertical with No. two supporting planes, insert groove is formed between a described supporting plane and No. two supporting planes, the bottom of described insert groove is provided with locating hole, the both sides of described bit body are provided with a supporting surface and No. two supporting surfaces, this supporting surface and No. two supporting surfaces are planar structure, a screw and No. two screws are provided with in described bit body, one end and a supporting surface of a described screw flush, one end and No. two supporting surfaces of described No. two screws flush, described locating dowel is arranged in locating hole, described bit body is arranged in insert groove, a described supporting surface is close to a supporting plane, described No. two supporting surfaces are close to No. two supporting planes, a described screw thread is connected in a screw and a fixing screw hole, described No. two screw threads are connected in No. two screws and No. two fixing screw holes.
2. interchangeable cutter bit type drill bit according to claim 1, it is characterized in that: in described cutter bar body, be provided with inner cooling channel, on the back-end central of shank of the import position cutter bar body of described inner cooling channel or the cylindrical of shank, the outlet of this inner cooling channel is arranged in blade end face or chip area by cutter head place.
3. interchangeable cutter bit type drill bit according to claim 1 and 2, is characterized in that: a described supporting plane is after knife bar axis rotates 180 degree, and No. two supporting plane overlaps; A described supporting surface is after cutter head axis revolves turnback, and No. two supporting surface overlaps.
4. interchangeable cutter bit type drill bit according to claim 1 and 2, is characterized in that: a described boss is after knife bar axis rotates 180 degree, and No. two boss overlaps.
5. interchangeable cutter bit type drill bit according to claim 1 and 2, it is characterized in that: a described supporting plane and No. two supporting planes parallel, this supporting plane and No. two supporting planes all parallel with knife bar axis, and a described supporting plane and No. two supporting planes are all perpendicular to the bottom surface of insert groove; The axis of a described screw is vertical with a supporting surface, and the axis of described No. two screws is vertical with No. two supporting surfaces.
6. interchangeable cutter bit type drill bit according to claim 1 and 2, is characterized in that: described web thinning is X-type structure, and described main cutting edge adopts wave edge structure.
7. interchangeable cutter bit type drill bit according to claim 1 and 2, is characterized in that: the outer wall of described bit body is provided with negative cutting edge 25 and cylindrical dorsal horn 210.
8. interchangeable cutter bit type drill bit according to claim 1 and 2, is characterized in that: the quantity of described chip area 12 is two, and described chip area is straight groove structure or helical groove structure.
9. interchangeable cutter bit type drill bit according to claim 1 and 2, is characterized in that: the axis of described locating hole and cutter spindle line overlap.
10. interchangeable cutter bit type drill bit according to claim 1 and 2, is characterized in that: a described screw thread is connected in turn in a screw and a fixing screw hole, and described No. two screws are threaded in No. two screws and No. two fixing screw holes successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510252221.2A CN104907613A (en) | 2015-05-18 | 2015-05-18 | Replaceable cutter head type drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510252221.2A CN104907613A (en) | 2015-05-18 | 2015-05-18 | Replaceable cutter head type drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104907613A true CN104907613A (en) | 2015-09-16 |
Family
ID=54077287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510252221.2A Pending CN104907613A (en) | 2015-05-18 | 2015-05-18 | Replaceable cutter head type drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104907613A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107225271A (en) * | 2016-03-23 | 2017-10-03 | 江苏天工工具有限公司 | A kind of new high speed steel twist drill |
| CN108500350A (en) * | 2018-03-29 | 2018-09-07 | 盛旺汽车零部件（昆山）有限公司 | A kind of Disposable drilling bit |
| WO2019047433A1 (en) * | 2017-09-08 | 2019-03-14 | 浙江欣兴工具有限公司 | Rotary cutting tool with replaceable bit and rotary cutting method thereof, and bit installation method |
| CN111877992A (en) * | 2020-07-20 | 2020-11-03 | 南京集优智库信息技术有限公司 | Horizontal distributed drill bit for trenching operation |
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| US5957635A (en) * | 1998-08-21 | 1999-09-28 | Allied Machine & Engineering Corp. | Drill tool assembly |
| US20040184894A1 (en) * | 2003-03-21 | 2004-09-23 | Allied Machine & Engineering | Drill insert with controlled contact clearance |
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| KR20090089551A (en) * | 2008-02-19 | 2009-08-24 | (주)예스툴 | Insert drill |
| CN101730603A (en) * | 2007-06-29 | 2010-06-09 | 联合机械工程公司 | Ejector drill system |
| CN101733451A (en) * | 2009-12-07 | 2010-06-16 | 株洲钻石切削刀具股份有限公司 | Head-changeable hard alloy twist drill |
| CN101801576A (en) * | 2007-09-14 | 2010-08-11 | 彗星集团有限公司 | Drilling tool with drill crown |
| CN204657565U (en) * | 2015-05-18 | 2015-09-23 | 浙江欣兴工具有限公司 | Interchangeable cutter bit type drill bit |
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2015
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| US5957635A (en) * | 1998-08-21 | 1999-09-28 | Allied Machine & Engineering Corp. | Drill tool assembly |
| US20040184894A1 (en) * | 2003-03-21 | 2004-09-23 | Allied Machine & Engineering | Drill insert with controlled contact clearance |
| WO2005102573A1 (en) * | 2004-04-23 | 2005-11-03 | Yestool Co., Ltd. | Insert drill |
| CN101730603A (en) * | 2007-06-29 | 2010-06-09 | 联合机械工程公司 | Ejector drill system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107225271A (en) * | 2016-03-23 | 2017-10-03 | 江苏天工工具有限公司 | A kind of new high speed steel twist drill |
| WO2019047433A1 (en) * | 2017-09-08 | 2019-03-14 | 浙江欣兴工具有限公司 | Rotary cutting tool with replaceable bit and rotary cutting method thereof, and bit installation method |
| US10888933B2 (en) | 2017-09-08 | 2021-01-12 | Zhejiang Xinxing Tools Co., Ltd. | Tool bit replaceable rotary cutting tool and rotary cutting method and tool bit mounting method thereof |
| CN108500350A (en) * | 2018-03-29 | 2018-09-07 | 盛旺汽车零部件（昆山）有限公司 | A kind of Disposable drilling bit |
| CN108500350B (en) * | 2018-03-29 | 2021-07-20 | 盛旺汽车零部件（昆山）有限公司 | Disposable drill bit |
| CN111877992A (en) * | 2020-07-20 | 2020-11-03 | 南京集优智库信息技术有限公司 | Horizontal distributed drill bit for trenching operation |
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Application publication date: 20150916 |