CN108161081A - For the drill bit to the metal works Drilling operation with cementation zone - Google Patents
For the drill bit to the metal works Drilling operation with cementation zone Download PDFInfo
- Publication number
- CN108161081A CN108161081A CN201810061584.1A CN201810061584A CN108161081A CN 108161081 A CN108161081 A CN 108161081A CN 201810061584 A CN201810061584 A CN 201810061584A CN 108161081 A CN108161081 A CN 108161081A
- Authority
- CN
- China
- Prior art keywords
- cutter hub
- leading portion
- back segment
- drill bit
- knife
- 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 title claims abstract description 18
- 239000002184 metal Substances 0.000 title claims abstract description 12
- 230000004323 axial length Effects 0.000 claims abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000003672 processing method Methods 0.000 abstract description 2
- 238000005520 cutting process Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000005482 strain hardening 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
- B23B51/02—Twist drills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/04—Angles, e.g. cutting angles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/04—Angles, e.g. cutting angles
- B23B2251/043—Helix angles
- B23B2251/046—Variable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/40—Flutes, i.e. chip conveying grooves
- B23B2251/408—Spiral grooves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
The present invention provides for the drill bit to the metal works Drilling operation with cementation zone, it can solve the problem of low processing efficiency existing for Conventional processing methods, high processing costs and can solve that using existing single disposably drill drill bit processing technology requirement can not be met.It includes the cutter hub of concentric integrally connected and handle of a knife, two chip spaces extended spirally is offered on cutter hub periphery so as to form two sword valves in cutter hub, two sword valves are equipped with seamed edge；Cutter hub includes cutter hub leading portion and cutter hub back segment, the axial length l of cutter hub leading portion is 5mm, chip space penetrates through the smooth drop-over in joint of the cutter hub leading portion, cutter hub back segment and chip space in cutter hub leading portion and cutter hub back segment, the helical angle of cutter hub leading portion is the value range of fixed angle β 1 and β 1 at 0 °~10 °, the helical angle of cutter hub back segment gradually fades to fixed angle β 2 from the end of cutter hub leading portion to the chip space tail end by fixed angle β 1, and the value range of fixed angle β 2 is 25 °~35 °.
Description
Technical field
The present invention relates to the cutter fields of metal cutting process, are especially for having heat treatment hardened layer on surface
Metal material machining cutter, particularly for the drill bit to the metal works Drilling operation with cementation zone.
Background technology
Surface being required to have the heavy duty such as common gear, bearing, clutch part in electro-mechanical arts good wear-resisting more
Performance and core have excellent shock resistance, therefore such part would generally be heat-treated and obtained with the surface in parts
Obtain hardened layer of the one layer of hardness in HRC52-62.And when carrying out Drilling operation to the metal material with cementation zone, usually
It is first to remove cementation zone, then Drilling operation is carried out to workpiece with drill bit with milling cutter；It is more that it does not only take up the warehouse compartment of tool magazine,
And frequent tool changing is needed in process, thus productive temp is low, processing efficiency is low, of high cost.In order to save the cost of charp tool
And productive temp is improved, it is in the art to attempt that drill bit the cementation zone to workpiece, core progress one are completed using one
The Drilling operation of secondary property, but conventional drill bit can occur when piercing cementation zone crushing knife even breaking the phenomenon that；And lead to
Cutting angle of cutting edge can be changed or the cutting edge of drill bit is designed as to the shape of straight cutting edge by crossing the design platform on the apex point of drill bit
Formula reduces the sharp journey of seamed edge cutting edge so as to play the role of protection apex point by reducing the axial rake of apex point
Degree, effectively avoids drill bit that crushing knife occurs when piercing cementation zone so that drill bit is cut when drilling to cementation zone
Performance is cut greatly to be played, but the drill bit of this form is in the not high workpiece inner core of cutting hardness, due to cutting edge not
It is enough sharp, there can be the problem of processing load is big, and axial rake is smaller and can cause chip removal poor performance, easily twine bits phenomenon
So as to which hole wall can be scratched, the processing technology requirement of workpiece can not be met.
Invention content
In view of the above-mentioned problems, the present invention provides for the brill to the metal works Drilling operation with cementation zone
Head can solve the problems, such as that processing efficiency existing for Conventional processing methods is low, high processing costs, and can solve using existing single handle
Disposably drilling can not meet the problem of processing technology requires to drill bit.
Its technical solution is, for the drill bit to the metal works Drilling operation with cementation zone, including with one heart
The cutter hub and handle of a knife of integrally connected, the cutter hub and handle of a knife are cylinder, and wherein the body diameter of cutter hub is the circle of D1, handle of a knife
Column diameter is D2, offered on the cutter hub periphery two chip spaces extended spirally so as to cutter hub formed two sword valves, two
A sword valve is equipped with seamed edge, it is characterised in that：The cutter hub includes cutter hub leading portion and cutter hub back segment, the cutter hub leading portion
Axial length l is 5mm, and the chip space penetrates through the cutter hub leading portion, cutter hub back segment and the chip space in the cutter hub leading portion
With the smooth drop-over in joint of cutter hub back segment, the angular dimension of the helixangleβ 1 of the cutter hub leading portion is fixed and the value range of β 1
At 0 °~10 °, the helixangleβ 2 of the cutter hub back segment is from the end of cutter hub leading portion to the chip space tail end by fixed angle β 1
β 2 gradually is increased to, the value range of β 2 is at 25 °~35 °.
Further, radial rake γ 1=0 °~5 of the cutter hub leading portion, the radial rake γ 2=of the cutter hub back segment
10 °~18 °.
Further, the point of a knife setting outer rim corner R of the cutter hub front end, and the outer rim corner R is 0.3mm~1mm.
The beneficial effects of the present invention are：
(1) its cutter hub is made of cutter hub leading portion and cutter hub back segment, after the chip space perforation cutter hub leading portion and cutter hub on cutter hub
Section, and chip space smooth connection in the joint of cutter hub leading portion and cutter hub back segment, and the helical angle of cutter hub leading portion uses angle
Range is designed in 0 °~10 ° of low pitch angle, so as to which cutter hub leading portion can realize smaller axial rake, can reduce rib afterwards
The intensity of side cutting edge effectively prevent when cutter hub leading portion is in work hardening layer seamed edge cutting edge to collapse scarce；And cutter hub back segment uses value
Range is designed in 25 °~35 ° of large helix angle, so as to which cutter hub back segment can realize larger axial rake, to effectively improve knife
The sharpness of the seamed edge cutting edge of body back segment, the cutting requirement for meeting workpiece inner sandwich layer；Therefore drill bit of the present invention its primary feed can
The processing of the drilling to workpiece inner core metal material can be met again by meeting the processing of the drilling to workpiece surface hardened layer, thus can be significantly
Processing efficiency is improved, the cost of charp tool is saved, reduces production cost；
(2) its cutter hub leading portion is designed using 0 °~5 ° of small radial rake, therefore the intensity of point of a knife is high, push effect is apparent；
And cutter hub back segment is designed simultaneously using 10 °~18 ° of big radial rake, therefore the shear action of cutter hub back segment is strong, cutting is brisk；From
And processing efficiency can be further improved, ensure machining accuracy；
(3) outer rim corner R is set by the point of a knife in cutter hub front end, further increases drill bit point of a knife intensity, improve cutter
Service life.
Description of the drawings
Fig. 1 is structure diagram of the present invention for the drill bit to the metal works Drilling operation with cementation zone；
Fig. 2 is cutter hub leading portion helical angle, cutter hub back segment helical angle schematic diagram in the present invention；
Fig. 3 is A-A in Fig. 1 to enlarged structure schematic diagram；
Fig. 4 is the B-B direction enlarged structure schematic diagram in Fig. 1；
Fig. 5 is the close-up schematic view at the position of tool tip of cutter hub front end in the present invention.
Reference numeral：10- cutter hubs, 11- cutter hub leading portions, 12- cutter hub back segments, 20- handle of a knifes, 30- chip spaces, 40- seamed edges.
Specific embodiment
See Fig. 1, the present invention is used for the drill bit to the metal works Drilling operation with cementation zone, including concentric one
The cutter hub 10 and handle of a knife 20 of body connection, cutter hub 10 and handle of a knife 20 are cylinder, and wherein the body diameter of cutter hub 10 is D1, handle of a knife
20 body diameter is D2, and the chip space 30 extended spirally is offered on 10 periphery of cutter hub so as to form two sword valves in cutter hub,
Two sword valves are equipped with seamed edge 40；Cutter hub 10 includes cutter hub leading portion 11 and cutter hub back segment 12, and the axial length l of cutter hub leading portion 11 is
5mm, chip space 30 penetrate through the engagement of cutter hub leading portion 11, cutter hub back segment 12 and chip space 30 in cutter hub leading portion 11 and cutter hub back segment 12
Locate smooth drop-over, the angular dimension of the helixangleβ 1 of cutter hub leading portion 11 is fixed and the value range of β 1 is at 0 °~10 °, cutter hub back segment
12 helixangleβ 2 gradually increases to β 2, the value of β 2 from the end of cutter hub leading portion 11 to 30 tail end of chip space by fixed angle β 1
Range is at 25 °~35 °.
See Fig. 3 and Fig. 4, radial rake γ 1=0 °~5 of cutter hub leading portion 11, the radial rake γ 2=of cutter hub back segment 12
10 °~18 °.
See Fig. 5, the point of a knife setting outer rim corner R of cutter hub front end 11, and outer rim corner R is 0.3mm~1mm.
Drill bit of the present invention realizes the variation that helical angle is realized on same chip space so that gapless in chip space,
Chip removal is smooth, the conventional method for being segmented fluting is needed during helical angle variation so as to break, manufacture is high in machining efficiency, at low cost.
The specific implementation of the present invention is described in detail, but content is only the preferable embodiment party of the invention above
Case, it is impossible to be construed as limiting the practical range of the invention.All impartial changes made according to the invention application range
Change and improvement etc. should all be belonged to still within the patent covering scope of the present invention.
Claims (3)
1. for the drill bit to the metal works Drilling operation with cementation zone, include the cutter hub of concentric integrally connected
(10) and handle of a knife (20), the cutter hub (10) and handle of a knife (20) are cylinder, wherein the body diameter of cutter hub (10) be D1, knife
The body diameter of handle (20) is D2, and two chip spaces extended spirally (30) are offered on cutter hub (10) periphery so as in knife
Body forms two sword valves, and two sword valves are equipped with seamed edge (40), it is characterised in that：The cutter hub (10) includes cutter hub leading portion
(11) with cutter hub back segment (12), the axial length l of the cutter hub leading portion (11) is 5mm, and the chip space (30) penetrates through the knife
Body leading portion (11), cutter hub back segment (12) and the chip space (30) are in the engagement of the cutter hub leading portion (11) and cutter hub back segment (12)
Locate smooth drop-over, the angular dimension of the helixangleβ 1 of the cutter hub leading portion (11) is fixed and the value range of β 1 is at 0 °~10 °, institute
The helixangleβ 2 of cutter hub back segment (12) is stated from the end of cutter hub leading portion (11) to the chip space (30) tail end by fixed angle β 1
β 2 gradually is increased to, the value range of β 2 is at 25 °~35 °..
2. the drill bit according to claim 1 being used for the metal works Drilling operation with cementation zone, feature
It is：Radial rake γ 1=0 °~5 of the cutter hub leading portion (11), the radial rake γ 2=10 ° of the cutter hub back segment (12)
~18 °.
3. the drill bit according to claim 1 or 2 being used for the metal works Drilling operation with cementation zone, described
The point of a knife setting outer rim corner R of cutter hub front end, and the outer rim corner R is 0.3mm~1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810061584.1A CN108161081A (en) | 2018-01-19 | 2018-01-19 | For the drill bit to the metal works Drilling operation with cementation zone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810061584.1A CN108161081A (en) | 2018-01-19 | 2018-01-19 | For the drill bit to the metal works Drilling operation with cementation zone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108161081A true CN108161081A (en) | 2018-06-15 |
Family
ID=62515526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810061584.1A Pending CN108161081A (en) | 2018-01-19 | 2018-01-19 | For the drill bit to the metal works Drilling operation with cementation zone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108161081A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110539018A (en) * | 2019-10-15 | 2019-12-06 | 德州三嘉机器制造有限公司 | Copper cooling wall three-link phase cutting hole machining tool and machining process |
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| CN101342605A (en) * | 2007-07-12 | 2009-01-14 | 本田技研工业株式会社 | Drill |
| CN101733452A (en) * | 2010-01-03 | 2010-06-16 | 阿诺（苏州）刀具有限公司 | Drilling and reaming powerful drill |
| CN101791717A (en) * | 2010-03-22 | 2010-08-04 | 深圳市金洲精工科技股份有限公司 | Minitype drill bit and processing method thereof |
| CN102145400A (en) * | 2011-04-27 | 2011-08-10 | 江苏飞达钻头股份有限公司 | Twist drill with changeable helical angles |
| CN202180242U (en) * | 2011-05-06 | 2012-04-04 | 尖点科技股份有限公司 | Improved junk slot structure of drill bit |
| CN102554321A (en) * | 2010-12-30 | 2012-07-11 | 创国精密股份有限公司 | Drilling needle structure |
| CN103357925A (en) * | 2012-03-30 | 2013-10-23 | 新野鼎泰电子精工科技有限公司 | Micro single-blade drill for machining printed circuit board (PCB) |
| CN103611970A (en) * | 2013-11-28 | 2014-03-05 | 天津市量具刃具有限公司 | Implement method of rake convergence drill bit and rake convergence drill bit |
| CN204171411U (en) * | 2014-09-12 | 2015-02-25 | 贵州西南工具(集团)有限公司 | A kind of advanced composite material (ACM) drill bit |
| CN105033330A (en) * | 2015-09-02 | 2015-11-11 | 苏州阿诺精密切削技术股份有限公司 | Low-torque self-correction drill with reinforced drill point |
| CN206065498U (en) * | 2016-08-19 | 2017-04-05 | 上海亨宁精密机械设备有限公司 | A kind of drill bit |
| CN206305515U (en) * | 2016-12-29 | 2017-07-07 | 河南一工钻业有限公司 | A kind of fluted drill of variable helix angle |
| CN107052408A (en) * | 2017-01-10 | 2017-08-18 | 深圳市金洲精工科技股份有限公司 | Boring bar tool |
| CN207756970U (en) * | 2018-01-19 | 2018-08-24 | 苏州阿诺精密切削技术有限公司 | A kind of drill bit for the metal works drilling processing with cementation zone |
-
2018
- 2018-01-19 CN CN201810061584.1A patent/CN108161081A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE697893A (en) * | 1966-05-02 | 1967-10-16 | ||
| KR840008911A (en) * | 1983-05-25 | 1984-12-20 | 나까하라 쯔네오 | drill |
| CN101342605A (en) * | 2007-07-12 | 2009-01-14 | 本田技研工业株式会社 | Drill |
| CN101733452A (en) * | 2010-01-03 | 2010-06-16 | 阿诺（苏州）刀具有限公司 | Drilling and reaming powerful drill |
| CN101791717A (en) * | 2010-03-22 | 2010-08-04 | 深圳市金洲精工科技股份有限公司 | Minitype drill bit and processing method thereof |
| CN102554321A (en) * | 2010-12-30 | 2012-07-11 | 创国精密股份有限公司 | Drilling needle structure |
| CN102145400A (en) * | 2011-04-27 | 2011-08-10 | 江苏飞达钻头股份有限公司 | Twist drill with changeable helical angles |
| CN202180242U (en) * | 2011-05-06 | 2012-04-04 | 尖点科技股份有限公司 | Improved junk slot structure of drill bit |
| CN103357925A (en) * | 2012-03-30 | 2013-10-23 | 新野鼎泰电子精工科技有限公司 | Micro single-blade drill for machining printed circuit board (PCB) |
| CN103611970A (en) * | 2013-11-28 | 2014-03-05 | 天津市量具刃具有限公司 | Implement method of rake convergence drill bit and rake convergence drill bit |
| CN204171411U (en) * | 2014-09-12 | 2015-02-25 | 贵州西南工具(集团)有限公司 | A kind of advanced composite material (ACM) drill bit |
| CN105033330A (en) * | 2015-09-02 | 2015-11-11 | 苏州阿诺精密切削技术股份有限公司 | Low-torque self-correction drill with reinforced drill point |
| CN206065498U (en) * | 2016-08-19 | 2017-04-05 | 上海亨宁精密机械设备有限公司 | A kind of drill bit |
| CN206305515U (en) * | 2016-12-29 | 2017-07-07 | 河南一工钻业有限公司 | A kind of fluted drill of variable helix angle |
| CN107052408A (en) * | 2017-01-10 | 2017-08-18 | 深圳市金洲精工科技股份有限公司 | Boring bar tool |
| CN207756970U (en) * | 2018-01-19 | 2018-08-24 | 苏州阿诺精密切削技术有限公司 | A kind of drill bit for the metal works drilling processing with cementation zone |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110539018A (en) * | 2019-10-15 | 2019-12-06 | 德州三嘉机器制造有限公司 | Copper cooling wall three-link phase cutting hole machining tool and machining process |
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| 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: 20180615 |