CN107442816A - Drill bit - Google Patents
Drill bit Download PDFInfo
- Publication number
- CN107442816A CN107442816A CN201710800056.9A CN201710800056A CN107442816A CN 107442816 A CN107442816 A CN 107442816A CN 201710800056 A CN201710800056 A CN 201710800056A CN 107442816 A CN107442816 A CN 107442816A
- Authority
- CN
- China
- Prior art keywords
- drill bit
- cutting edge
- shaft core
- connecting portion
- land
- 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
Links
- 238000005553 drilling Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/0081—Conical drills
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
The present invention relates to drilling device technical field, there is provided a kind of drill bit, including：Handle of a knife, connecting portion and processing department, wherein, the connecting portion is connected with handle of a knife；The processing department has a shaft core, described shaft core one end is connected with the connecting portion, the other end is machined surface, land and chip pocket are provided with the shaft core, the land and chip pocket are set around the lateral surface of the shaft core, and the land and chip pocket are arranged at intervals, and the shaft core is in coniform.By with upper type, so that the machined surface cross section of processing department is smaller in drill bit, resistance of the drill bit in boring procedure can be reduced, and it is larger by the cross-sectional area of connecting portion one end, and it can effectively prevent that, when carrying out Drilling operation to workpiece, drill bit is broken because of insufficient strength；The service life of drill bit is improved simultaneously.
Description
Technical field
The present invention relates to drilling device technical field, more particularly to a kind of drill bit.
Background technology
It is well known that drill bit is a kind of bore cutter.Drill bit has at least one main cutting edge, and the main cutting edge is from drill bit
Outer surface substantially towards drill bit center position extend.Cutting zone is formed in the central area of drill bit, due to this
The angle of wedge in cutting zone（Keilwinkel）The angle of wedge significantly greater than in radially outer cutting zone, therefore more properly
It is scraping and compressing rather than cutting to say the cutting zone.
During the application is realized, inventor has found that prior art at least has problems with：Existing drill bit because
The cross-sectional area of machined surface is larger, causes drill bit resistance in boring procedure larger, so that when being processed using the drill bit,
Often occur phenomenon of rupture, service life is shorter.
The content of the invention
In order to solve the above-mentioned technical problem, the embodiment of the present invention provides the drill bit of a kind of high intensity and service life length.
The present invention provides a kind of drill bit, including：Handle of a knife, connecting portion and processing department, wherein, the connecting portion connects with handle of a knife
Connect；The processing department has a shaft core, and described shaft core one end is connected with the connecting portion, and the other end is machined surface, the shaft core
On be provided with land and chip pocket, the land and chip pocket are set around the lateral surface of the shaft core, and the land and
Chip pocket is arranged at intervals, and the diameter of one end that the shaft core is connected with connecting portion is more than the diameter of the shaft core other end.
In certain embodiments, the connecting portion is in round table-like that the diameter of its one end being connected with handle of a knife is more than and processing
The diameter of one end of portion's connection.
In certain embodiments, the chip pocket is V-groove.
In certain embodiments, the drill bit has rotation axis；The number of the land and chip pocket is two, and
Two lands are relative to the rotation axis Central Symmetry.
In certain embodiments, the machined surface of the processing department is a circular conical surface.
In certain embodiments, the machined surface is provided with the first cutting edge and the second cutting edge, first cutting edge
From the machined surface center position from outer rim to the machined surface extend, second cutting edge by the machined surface center
Extend to the outer rim of the machined surface, first cutting edge and the second cutting edge intersect at machined surface, and described first cuts
The length for cutting sword is more than the length of second cutting edge.
In certain embodiments, the angle of first cutting edge and the second cutting edge is acute angle.
In certain embodiments, the angle of first cutting edge and the second cutting edge is 30 degree.
In certain embodiments, first cutting edge and the second cutting edge have two, and both with respect to the rotation
Shaft axis Central Symmetry；Two second cutting edges are parallel to each other, and both spacing are 0.04 millimeter.
In certain embodiments, the helical angle of the land is 30 degree.
The beneficial effects of the invention are as follows：Compared with prior art, the present invention provides a kind of drill bit and included：Handle of a knife, connection
Portion and processing department, wherein, the connecting portion is connected with handle of a knife；The processing department has a shaft core, described shaft core one end with it is described
Connecting portion connects, and the other end is machined surface, and land and chip pocket, the equal winding of land and chip pocket are provided with the shaft core
In the lateral surface of the shaft core, and the land and chip pocket are arranged at intervals, one end that the shaft core is connected with connecting portion
Diameter is more than the diameter of the shaft core other end.Cause that the machined surface cross section of processing department in drill bit is smaller based on above structure, can subtract
Few resistance of the drill bit in boring procedure, and it is larger by the cross-sectional area of connecting portion one end, it effectively can prevent entering to workpiece
During row Drilling operation, drill bit is broken because of insufficient strength；The service life of drill bit is improved simultaneously.
Brief description of the drawings
One or more embodiments are illustrative by the picture in corresponding accompanying drawing, these exemplary theorys
The bright restriction not formed to embodiment, the element for having same reference numbers label in accompanying drawing are expressed as similar element, removed
Non- have a special statement, and composition does not limit the figure in accompanying drawing.
Fig. 1 is the structural representation of drill bit in the embodiment of the present invention；
Fig. 2 is the structural representation of the processing department other end of drill bit in Fig. 1；
Fig. 3 is the structural representation of the processing department other end end face of drill bit in Fig. 1.
Embodiment
For the ease of understanding the present invention, with reference to the accompanying drawings and detailed description, the present invention is carried out in more detail
It is bright.It should be noted that when element is expressed " being fixed on " another element, it can directly on another element or
There may be one or more elements placed in the middle therebetween.When an element is expressed " connection " another element, it can be straight
Another element is connected in succession or there may be one or more elements placed in the middle therebetween.Term used in this specification
The orientation or position relationship of the instruction such as " on ", " under ", " interior ", " outer ", " bottom " are to be closed based on orientation shown in the drawings or position
System, it is for only for ease of and describes the present invention and simplify description, rather than indicates or imply that signified device or element must have
Specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, term " the
One ", " second " " 3rd " etc. is only used for describing purpose, and it is not intended that instruction or hint relative importance.
Unless otherwise defined, technology all used in this specification and scientific terminology are led with belonging to the technology of the present invention
The implication that the technical staff in domain is generally understood that is identical.Used term is simply in the description of the invention in this specification
The purpose of description specific embodiment, it is not intended to the limitation present invention.Term "and/or" includes used in this specification
The arbitrary and all combination of one or more related Listed Items.
As long as in addition, technical characteristic involved in invention described below different embodiments non-structure each other
It is be combined with each other into conflict can.
Referring to Fig. 1, Fig. 1 is the structural representation of drill bit in the embodiment of the present invention.One kind provided in an embodiment of the present invention
Drill bit 100, including handle of a knife 10, connecting portion 20 and processing department 30, one end of handle of a knife 10 are connected with one end of connecting portion 20, connecting portion
20 other end is connected with one end of processing department 30.
Specifically, handle of a knife 10 is cylinder, drill bit 100 has rotation axis A, rotation axis A and handle of a knife 10 axis weight
Close.When being processed using drill bit 100, the drill bit 100 is rotated around rotation axis A.
Connecting portion 20 is in round table-like, and the diameter of its one end is more than the other end.In the present embodiment, one end of handle of a knife 10 and company
One end connection of socket part 20, and the diameter of handle of a knife 10 is equal to the diameter of the connected one end end face of connecting portion 20.
Referring to Fig. 2, and combine Fig. 1, the processing department 30 is substantially in coniform, its one end and the other end of connecting portion 20
Connection, and processing department 30 is equal to the diameter of 20 corresponding end face of connecting portion with the diameter of the coupling part of connecting portion 30.Specifically, plus
The Ministry of worker 30 has a shaft core 31, and the shaft core 31 is in round table-like.Described one end of shaft core 31 is connected with the connecting portion 20, the other end
For machined surface 33.The diameter edge of the shaft core 31 is gradual to one end of the machined surface 33 with one end that the connecting portion 20 is connected
Diminish.Land 32 and chip pocket 34 are provided with the shaft core 31, land 32 and chip pocket 34 in the shape of a spiral, are set around shaft core
31 lateral surface, and land 32 and chip pocket 34 are arranged at intervals.Land 32 and chip pocket 34 extend by one end of shaft core 31
To the other end.In the present embodiment, the number of land 32 and chip pocket 34 is two, and two lands 32 relative to rotation
Axis A Central Symmetries, one of land 32 will overlap after rotation axis A rotation 180 degrees with another land 32.
Preferably, the long W of effective sword of processing department 30 is 6.5 millimeters, and the pitch angle alpha of land 32 is 30 degree.
In the present embodiment, Fig. 2 is referred to.Chip pocket 34 is V-groove, i.e. the cross sectional shape of chip pocket 34 has taper.
Compared to the chip pocket of drill bit in the prior art, the cross sectional shape substantially semicircular in shape or semiellipse of the chip pocket of existing drill bit
Shape, and the chip pocket 34 in the embodiment of the present invention is V-groove.Understood based on said structure, two kinds of chip pockets in A/F and
When depth is identical, the cross-sectional area of the chip pocket 34 in the embodiment of the present invention is smaller, so that the cross-sectional area of land 32 is more
Greatly, and then increase the intensity of drill bit 100, effectively prevent to workpiece carry out Drilling operation when, drill bit because of insufficient strength and
It is broken.Meanwhile improve the service life of drill bit 100.
As shown in figure 3, above-mentioned machined surface 33 is a circular conical surface.In the present embodiment, machined surface 33 is provided with the first cutting
The cutting edge 332 of sword 331 and second, first cutting edge 331 are prolonged from the outer rim of machined surface 33 to the center position of machined surface 33
Stretch, outer rim extension of second cutting edge 332 from the center of the machined surface 33 to machined surface 33, first cutting edge
331 and second cutting edge 332 intersect at the one of machined surface 33, and the length of first cutting edge 331 is more than described the
The length of two cutting edges 332.By Fig. 3（The structural representation of the other end end face of processing department 30）It is shown, the first cutting edge 331 and
The angle of two cutting edges 332 is acute angle.Preferably, the angle of the first cutting edge 331 and the second cutting edge 332 is 30 degree.It is described
The cutting speed of drill bit 100 is determined by the rotary speed of drill bit 100, and the cutting speed, is gradually dropped from periphery towards center
Low, i.e., in the first cutting edge 331 and the second cutting edge 332, closer to the part at the center of machined surface 33, its cutting speed is got over
It is low, and the cutting speed of each several part is all higher than the cutting speed of each several part on the second cutting edge 332 on the first cutting edge 331.
Thus, higher pressure load is produced in the central area that the second cutting edge 332 is formed, this also results in friction increase.The
This scrapings of two cutting edges 332, the processing mode of compressing and due to relatively low cutting speed and caused by high pressure load
It will cause that the power significantly increased must be applied in the central area of machined surface 33, so that drill bit 100 rotates, this will be to drill bit 100
Cause to hinder.The length of second cutting edge 332 is much smaller than the length of the first cutting edge 331, so that second cutting edge
332 central areas formed are smaller, so as to reduce the resistance that whole drill bit 100 advances.
In the present embodiment, the first cutting edge 331 and the second cutting edge 332 have two, and both with respect to rotary shaft
Line A Central Symmetries.Two the second cutting edges 332 are parallel to each other, and both spacing are 0.04 millimeter.
Include handle of a knife, connecting portion and processing department in the drill bit of the embodiment of the present invention, wherein, the connecting portion connects with handle of a knife
Connect；The processing department has a shaft core, and described shaft core one end is connected with the connecting portion, and the other end is machined surface, the shaft core
On be provided with land and chip pocket, the land and chip pocket are set around the lateral surface of the shaft core, and the land and
Chip pocket is arranged at intervals, and the shaft core is in coniform.Based on above structure cause the machined surface cross section of processing department in drill bit compared with
It is small, resistance of the drill bit in boring procedure can be reduced, and it is larger by the cross-sectional area of connecting portion one end, and can effectively prevent
When carrying out Drilling operation to workpiece, drill bit is broken because of insufficient strength；Meanwhile improve the service life of drill bit.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；At this
Under the thinking of invention, it can also be combined between the technical characteristic in above example or different embodiments, step can be with
Realized with random order, and many other changes of the different aspect of the present invention as described above be present, for simplicity, they do not have
Have and provided in details；Although the present invention is described in detail with reference to the foregoing embodiments, the ordinary skill people of this area
Member should be understood：It can still modify to the technical scheme described in foregoing embodiments, or to which part skill
Art feature carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from each reality of the present invention
Apply the scope of a technical scheme.
Claims (10)
- A kind of 1. drill bit, it is characterised in that including：Handle of a knife；Connecting portion, it is connected with handle of a knife；Processing department, there is a shaft core, described shaft core one end is connected with the connecting portion, and the other end is machined surface, in the shaft core Land and chip pocket are provided with, the land and chip pocket are set around the lateral surface of the shaft core, and the land and appearance Consider groove to be worth doing to be arranged at intervals, the diameter of one end that the shaft core is connected with connecting portion is more than the diameter of the shaft core other end.
- 2. drill bit according to claim 1, it is characterised in that the connecting portion in round table-like, its be connected with handle of a knife one The diameter at end is more than the diameter of the one end being connected with processing department.
- 3. drill bit according to claim 1, it is characterised in that：The chip pocket is V-groove.
- 4. drill bit according to claim 1, it is characterised in that the drill bit has rotation axis, and the land and appearance are considered to be worth doing The number of groove is two, and two lands are relative to the rotation axis Central Symmetry.
- 5. drill bit according to claim 1, it is characterised in that the machined surface of the processing department is a circular conical surface.
- 6. drill bit according to claim 5, it is characterised in that the machined surface is provided with the first cutting edge and the second cutting Sword, first cutting edge are extended from the outer rim of the machined surface to the center position of the machined surface, second cutting edge Extend from the center of the machined surface to the outer rim of the machined surface, first cutting edge and the second cutting edge intersect at processing Face, and the length of first cutting edge is more than the length of second cutting edge.
- 7. drill bit according to claim 6, it is characterised in that the angle of first cutting edge and the second cutting edge is sharp Angle.
- 8. drill bit according to claim 7, it is characterised in that the angle of first cutting edge and the second cutting edge is 30 Degree.
- 9. drill bit according to claim 8, it is characterised in that first cutting edge and the second cutting edge have two, And both with respect to the rotation axis Central Symmetry；Two second cutting edges are parallel to each other, and the spacing of the two is 0.04 Millimeter.
- 10. drill bit according to claim 1, it is characterised in that the helical angle of the land is 30 degree.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710800056.9A CN107442816A (en) | 2017-09-07 | 2017-09-07 | Drill bit |
| PCT/CN2017/101741 WO2019047251A1 (en) | 2017-09-07 | 2017-09-14 | Drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710800056.9A CN107442816A (en) | 2017-09-07 | 2017-09-07 | Drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107442816A true CN107442816A (en) | 2017-12-08 |
Family
ID=60495027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710800056.9A Pending CN107442816A (en) | 2017-09-07 | 2017-09-07 | Drill bit |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107442816A (en) |
| WO (1) | WO2019047251A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112139565A (en) * | 2020-09-03 | 2020-12-29 | 祁东县锋速钻探工具有限公司 | High-strength diamond drill bit and manufacturing method |
| CN116277286A (en) * | 2023-04-28 | 2023-06-23 | 深圳市金洲精工科技股份有限公司 | Micro Drill Bit and Its Processing Technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202271009U (en) * | 2011-09-20 | 2012-06-13 | 深圳市金洲精工科技股份有限公司 | Micro drill bit |
| CN203304646U (en) * | 2013-05-29 | 2013-11-27 | 苏州富莱克精密工具有限公司 | Chip dividing straight flute bit |
| CN104338978A (en) * | 2013-07-31 | 2015-02-11 | 上海名古屋精密工具股份有限公司 | High-strength highly-durable drill bit |
| CN204639247U (en) * | 2015-05-14 | 2015-09-16 | 台州百特工具有限公司 | A kind of straight shank twist drill |
| CN207239236U (en) * | 2017-09-07 | 2018-04-17 | 深圳市鑫国钰精密工具有限公司 | drill bit |
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| US2389909A (en) * | 1944-01-17 | 1945-11-27 | Hofbauer Frank | Rotary cutting tool |
| JPS60263607A (en) * | 1984-06-12 | 1985-12-27 | Nec Corp | Multi-layered printed circuit board and drill for use in drilling same |
| FR2668087A1 (en) * | 1990-10-22 | 1992-04-24 | Aerospatiale | TOOL AND DRILLING DEVICE WITH IMPROVED CHIP EVACUATION. |
| CN2139490Y (en) * | 1992-10-20 | 1993-08-04 | 王晓龙 | Bit with long and short cutting lip |
| DE69709351T2 (en) * | 1996-05-02 | 2002-08-14 | Sandvik Ab, Sandviken | DRILL |
| CN2551381Y (en) * | 2001-06-20 | 2003-05-21 | 魏玄仓 | WXC double-lead twist drill |
| JPWO2012070640A1 (en) * | 2010-11-26 | 2014-05-19 | 株式会社タンガロイ | Small diameter drill |
| SE536296C2 (en) * | 2011-02-08 | 2013-08-06 | Sandvik Intellectual Property | Drill with chip channels designed for improved chip evacuation |
| JP5051801B2 (en) * | 2011-03-03 | 2012-10-17 | 株式会社ビック・ツール | drill |
| CN104551105A (en) * | 2013-10-17 | 2015-04-29 | 常州埃特法斯工具有限公司 | Dual-bit center drill |
| CN203936427U (en) * | 2014-06-26 | 2014-11-12 | 超美精密工业（惠州）有限公司 | A kind of grooving tool |
| CN204108415U (en) * | 2014-08-26 | 2015-01-21 | 哈尔滨东安利峰刀具有限公司 | A kind of fluted drill being used for machining titanium alloy |
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2017
- 2017-09-07 CN CN201710800056.9A patent/CN107442816A/en active Pending
- 2017-09-14 WO PCT/CN2017/101741 patent/WO2019047251A1/en not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202271009U (en) * | 2011-09-20 | 2012-06-13 | 深圳市金洲精工科技股份有限公司 | Micro drill bit |
| CN203304646U (en) * | 2013-05-29 | 2013-11-27 | 苏州富莱克精密工具有限公司 | Chip dividing straight flute bit |
| CN104338978A (en) * | 2013-07-31 | 2015-02-11 | 上海名古屋精密工具股份有限公司 | High-strength highly-durable drill bit |
| CN204639247U (en) * | 2015-05-14 | 2015-09-16 | 台州百特工具有限公司 | A kind of straight shank twist drill |
| CN207239236U (en) * | 2017-09-07 | 2018-04-17 | 深圳市鑫国钰精密工具有限公司 | drill bit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112139565A (en) * | 2020-09-03 | 2020-12-29 | 祁东县锋速钻探工具有限公司 | High-strength diamond drill bit and manufacturing method |
| CN116277286A (en) * | 2023-04-28 | 2023-06-23 | 深圳市金洲精工科技股份有限公司 | Micro Drill Bit and Its Processing Technology |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019047251A1 (en) | 2019-03-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171208 |
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| RJ01 | Rejection of invention patent application after publication |