CN108188453A - Long bits cutting multi-ladder corrects non-gouge bit altogether - Google Patents
Long bits cutting multi-ladder corrects non-gouge bit altogether Download PDFInfo
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- CN108188453A CN108188453A CN201810101200.4A CN201810101200A CN108188453A CN 108188453 A CN108188453 A CN 108188453A CN 201810101200 A CN201810101200 A CN 201810101200A CN 108188453 A CN108188453 A CN 108188453A
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- ladder
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- reducing
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- 230000001603 reducing effect Effects 0.000 claims abstract description 22
- 230000007704 transition Effects 0.000 claims abstract description 10
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 2
- 241001074085 Scophthalmus aquosus Species 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 238000003754 machining Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
The present invention provides long cutting multi-ladders of considering to be worth doing to correct non-gouge bit altogether, can improve situation of the single bits slot form multi-ladder processing using much knives, especially solves the problems, such as ladder reducing than be more than 1.3 subland drill when carrying out long bits cutting chip wind it is serious.Drill body include from front to back with one heart one at least three diameters from front to back gradually increased cylinder, it is connected between two neighboring cylinder by the transition of ladder angle, and the amendment platform that axial width a is not less than 0.3mm is respectively equipped on each ladder angle transition position cylinder with large diameter, and each axial rake β=0 °~15 ° for correcting platform, radial rake α=25 °~0 °, simultaneously big reducing than two cylinder junction ladder angles correct platform axial rake be more than small reducing than two cylinder junction ladder angles correct the axial rake of platform, and big reducing than two cylinder junction ladder angles radial rake be less than small reducing than two cylinder junction ladder angles correct the radial rake of platform.
Description
Technical field
The present invention relates to precision cutting tool field, specially long bits cutting multi-ladder corrects non-gouge bit altogether.
Background technology
At present in the multi-ladder hole machined of progress three and above quantity and as reducing ratio (certain a pair of of neighbour of a certain ladder
The ratio of the body diameter that connects and roundlet column diameter) more than 1.3 when, be mostly the form processed successively using branched cutter, though
Requirement on machining accuracy can so be met, but its processing efficiency is low, the cost of charp tool is high；And as used the single drill bit of multi-ladder, it is past
Compare drill bit toward the big reducing of ladder using three and above quantity is just needed；But different reducings existing at present than step drill
Head is mostly using single bits form, and when encountering long machining, the form of simple list chip space often will appear chip winding
The phenomenon that serious, therefore can not process to normal table.
Invention content
In view of the above-mentioned problems, the present invention provides long cutting multi-ladders of considering to be worth doing to correct non-gouge bit altogether, existing list can be solved
Than subland drill, the existing chip when carrying out long bits cutting winds the problem of serious to the big reducing of chip removal slot form.
Its technical solution is that long bits cutting multi-ladder corrects non-gouge bit altogether, and including drillstock, the front end of the drillstock is set
There is the drill body of coaxial one, the drill body includes from front to back at least three cylinders of one and at least described three cylinders with one heart
Diameter gradually increase from front to back, between two neighboring cylinder pass through the transition of ladder angle connect, it is characterised in that：It is in reducing
Than opening up main chip space and the main chip space on the previous small diameter cylinders peripheral surface in maximum two adjacent cylinders
Unicom extends to all cylinders and on latter large diameter cylinder peripheral surface while opens up secondary chip space and the secondary chip space
All cylinders in rear are extanded rearward to, the pair chip space extends to form forward the cutting edge of this cylinder in previous cylindrical periphery
Band, and the amendment that axial width a is not less than 0.3mm is respectively equipped on the cylinder with large diameter of each ladder angle transition position
Platform, and it is each it is described correct platform axial rake β angular range be 0 °~15 °, the angular range of radial rake α for-
25 °~0 °, at the same big reducing than two cylinder junction ladder angles correct platform axial rake be more than small reducing than two circles
The axial rake of platform is corrected at column junction ladder angle, and big reducing than the radial rake at two cylinder junction ladder angles be less than
Small reducing than two cylinder junction ladder angles correct platform radial rake.
Further, new cutting edge is formed on the amendment platform, wherein the cutting edge that is connected with previous cylinder is flat to correct
The main cutting edge of platform, and the end cutting edge for correcting platform is formed on latter cylindrical surface.
Further, chip breaker groove is offered respectively on corresponding amendment platform on two sword valves on same ladder angle, institute
The depth h for stating chip breaker groove corrects platform axial width a's no more than 0.2mm, the length l of the chip breaker groove according to corresponding
Depending on body diameter residing for size and the ladder amendment platform.
Further, the chip breaker groove on same ladder angle on the amendment platform of two sword valves arrives corresponding major and minor respectively
The distance between cutting edge l1 and l2 is unequal.
Further, the cutting edge rounding size of the main cutting edge for correcting platform, end cutting edge is than drill bit apex point portion
Big 0.01~the 0.02mm of cutting edge.
The beneficial effects of the present invention are：It is by setting a plurality of chip space and effectively controlling each rank for the non-design of slot altogether
The chip-flowing of ladder, while by setting the bending size for correcting platform cutting to be controlled to be formed on ladder angle, so as to effectively
Ground controls chip state, avoids the bits cutting longer than multi-ladder of big reducing conscientiously it is possible that the chip winding problem occurred, ensures steady
Fixed reliable machining, so as to effectively improve processing efficiency, reduce tool wear, reduction processing cost；Additionally by repairing
Setting chip breaker groove to carry out effective forced chip-cutting to long consider to be worth doing on positive platform, so as to further effectively control chip state, keeps away
Exempt from the mutual winding of long chip, it is ensured that the machining of continuous-stable.
Description of the drawings
Fig. 1 is the structure diagram that the long bits cutting multi-ladder of the present invention corrects the non-embodiment of gouge bit altogether；
Fig. 2 be Fig. 1 diagrammatic cross-section from A-A to partial enlargement；
Fig. 3 is the enlarged structure schematic diagram at the first ladder angle I in the embodiment of the present invention；
Fig. 4 is the enlarged structure schematic diagram at the second ladder angle II in the embodiment of the present invention；
Fig. 5 be the embodiment of the present invention Fig. 1 at III by B to the first ladder angle on correct the axial rake signal of platform
Figure；
Fig. 6 is the chip breaker groove position opened up on the amendment platform in the embodiment of the present invention on two sword valves at the first ladder angle
The contrast schematic diagram put；
Fig. 7 is the chip breaker groove position opened up on the amendment platform in the embodiment of the present invention on two sword valves at the second ladder angle
The contrast schematic diagram put.
Reference numeral：1- drillstocks, 2- drill bodies, the first cylinders of 21-, the second cylinders of 22-, 23- third cylinders, the main chip removals of 3-
Slot, secondary 4- pair chip spaces, 5- major trough lands, 6- apex points, 7- amendment platforms, 8- amendment platforms, 9- chip breaker grooves, 10- chip breaking are recessed
Slot, 11- chip breaker grooves, 12- chip breaker grooves.
Specific embodiment
See Fig. 1~Fig. 4, long cutting multi-ladder of considering to be worth doing corrects non-gouge bit altogether, and including drillstock 1, the front end of drillstock 1 is equipped with together
The drill body 2 of axis one, drill body 2 include from front to back at least three cylinders of one with one heart, and the present embodiment is set there are three cylinder,
The first cylinder 21 of respectively a diameter of D1, the second cylinder 22 of a diameter of D2 and a diameter of D3 thirds cylinder 23, and three circles
The diameter of column gradually increases from front to back, i.e. D1 ＜ D2 ＜ D3；It is connected between two neighboring cylinder by the transition of ladder angle, i.e., the
It is connected by I transition of the first ladder angle between one cylinder 21 and the second cylinder 22, led between the second cylinder 22 and third cylinder 23
Cross the II transition connection of the second ladder angle；In embodiment, the reducing at the first ladder angle is more than the reducing at the second ladder angle than D2/D1
Than D3/D2, therefore selection opens up main chip space, in latter great circle on the previous small column at the first bigger ladder angle of reducing
Secondary chip space is opened up on column, i.e., main chip space 3 is opened up on 21 periphery of the first cylinder so as to form two swords in the first cylinder 21
Valve, and main chip space 3 is spirally extended to the second cylinder 22, third cylinder 23 backward, and it is same on the periphery of the second cylinder 22
Shi Kaishe pairs chip space 4, secondary chip space 4 extend to form major trough on the first cylinder 21 to two sword valves of the first cylinder 21
Land 5 while the third cylinder extension of secondary chip space 4 rearward；The cutting edge of 5 front end of major trough land is symmetric and is formed
Apex point 6.
It is respectively equipped at first ladder angle I, at the second ladder angle II and corrects platform 7,8, and correct the axial wide of platform 7,8
A is spent not less than 0.3mm, and there is enough rigidity to ensure to correct platform；See Fig. 2 and Fig. 5, and correct the axial direction of platform 7,8
The angular range of preceding angle beta is 0 °~15 °, the angular range of radial rake α is -25 °~0 °, wherein when axial rake is less than
At 0 °, negative axial rake easily makes platform form extruding cutting edge, inhibits chip discharge direction, acutely increases torque-on-bit, increases
Drill bit bursts apart risk；And positive axial rake is related to anterior angle in slot and helical angle, platform anterior angle size cannot surpass in structure
Anterior angle in helical angle and slot is crossed, not so platform can not be formed or platform structure is incomplete；Meeting when larger negative radial rake is processed
Interfere with chip space, easily grind out gap；When processing long chip material, usual drill bit is corrected and is not set chip breaking mechanism at platform, just
Radial rake easily inhibit to arrange direction outside chip, interfere chip discharge, also increase torque, increase drill bit and squeeze off risk.
The axial rake for correcting platform 7 is more than the axial rake for correcting platform 8, and the radial rake for correcting platform 7 is less than
The radial rake of platform 8 is corrected in connection；Verified by actual processing, long chip material drill bit axial rake is smaller, diameter forward
When angle is bigger, easier formation minor spiral chip, on the contrary easier formation king bolt chip；So in order to control the discharge of long chip
Flow direction, small ladder are partial to that axial rake is small, radial rake is big, form minor spiral shape chip；Big ladder is partial to axial rake
Greatly, radial rake is small, forms king bolt shape chip, thus the long chip curl of each ladder can be controlled non-interference.Therefore it adopts
It is carried out in stepped hole process with the drill bit of the present embodiment, king bolt chip is generated at the first ladder angle I, and in second-order
Minor spiral chip is generated at terraced angle II.
It corrects platform 7,8 and amendment platform cutting edge is respectively formed on corresponding ladder angle I, II, wherein with previous cylinder
The cutting edge that is connected is the main cutting edge for correcting platform, and the end cutting edge for correcting platform is formed on latter cylinder.
It is corresponded on two sword valves on same ladder transition angle and offers chip breaker groove respectively on the amendment platform at ladder angle, seen
Fig. 6, corresponding ladder is corrected and is respectively equipped with chip breaker groove 9,10 on platform 7 on two sword valves at the first ladder, wherein scheming
6.1 represent be end cutting edge side at the first ladder amendment platform, the amendment of end cutting edge opposite side that Fig. 6 .2 are represented puts down
Platform；See Fig. 7, corresponding ladder is corrected and is respectively equipped with chip breaker groove 11,12 on platform 8 on two sword valves at the second ladder,
What wherein Fig. 7 .1 were represented is the amendment platform of main cutting edge side at the second ladder, the main cutting edge opposite side that Fig. 7 .2 are represented
Correct platform；And the depth h of chip breaker groove 9,10,11,12 is formed additionally no more than 0.2mm to prevent causing to correct on platform
Stress concentration；At same ladder on two sword valves correct platform on chip breaker groove arrive respectively corresponding major and minor cutting edge it
Between distance l1 and l2 it is unequal, Fig. 6 and Fig. 7 are seen, to prevent major and minor cutting edge from leaving notch trace on part.In Fig. 2
L is that the length of chip breaker groove is illustrated, and the length l of chip breaker groove is according to the corresponding size for correcting platform axial width a and rank
Depending on body diameter residing for the terraced amendment platform.
In addition, for long chip material, because processing temperature changes greatly, especially steel class, chip, which is heat-treated, to be caused
Interior tissue is complicated, and arc-shaped cutting edge is more resistant, to promote cutting edge rigidity, corrects main cutting edge, the end cutting edge of platform
Cutting edge size it is bigger 0.01~0.02mm than the cutting edge rounding in drill bit apex point portion to promote wearability.
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 (5)
1. length bits cutting multi-ladder corrects non-gouge bit altogether, including drillstock, the front end of the drillstock is equipped with the brill of coaxial one
Body, the drill body include from front to back with one heart one at least three cylinders and at least described three cylinders diameter from front to back
Gradually increase, pass through the transition of ladder angle between two neighboring cylinder and connect, it is characterised in that：It is more adjacent than maximum in reducing
Two cylinders in previous small diameter cylinders peripheral surface on open up main chip space and the main chip space unicom extend to it is all
Cylinder simultaneously opens up secondary chip space and the secondary chip space extands rearward to rear simultaneously on latter large diameter cylinder peripheral surface
All cylinders, the pair chip space extend to form forward the cutting edge band of this cylinder in previous cylindrical periphery, and in each institute
It states and the amendment platform that axial width a is not less than 0.3mm is respectively equipped on the transition position cylinder with large diameter of ladder angle, and is each described
The angular range for correcting the axial rake β of platform is 0 °~15 °, the angular range of radial rake α is -25 °~0 °, while big change
Diameter than two cylinder junction ladder angles correct platform axial rake be more than small reducing than two cylinder junction ladder angles repair
The axial rake of positive platform, and big reducing than two cylinder junction ladder angles radial rake be less than small reducing than two cylinders
Correct the radial rake of platform in junction ladder angle.
2. long bits cutting multi-ladder according to claim 1 corrects non-gouge bit altogether, it is characterised in that：The amendment platform
It is upper to form new cutting edge, wherein the cutting edge that is connected with previous cylinder is the main cutting edge for correcting platform, and on latter cylindrical surface
Form the end cutting edge for correcting platform.
3. long bits cutting multi-ladder according to claim 2 corrects non-gouge bit altogether, it is characterised in that：On same ladder angle
Offer chip breaker groove on two sword valves on corresponding amendment platform respectively, the depth h of the chip breaker groove is not more than 0.2mm.
4. long bits cutting multi-ladder according to claim 3 corrects non-gouge bit altogether, it is characterised in that：On same ladder angle
It is unequal that chip breaker groove on the amendment platform of two sword valves arrives the distance between corresponding major and minor cutting edge l1 and l2 respectively.
5. long bits cutting multi-ladder according to claim 4 corrects non-gouge bit altogether, it is characterised in that：Correct the master of platform
Cutting edge, the cutting edge rounding size of end cutting edge are bigger 0.01~0.02mm than the cutting edge in drill bit apex point portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810101200.4A CN108188453B (en) | 2018-02-01 | 2018-02-01 | Multi-step correction non-common-flute drill bit for long chip cutting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810101200.4A CN108188453B (en) | 2018-02-01 | 2018-02-01 | Multi-step correction non-common-flute drill bit for long chip cutting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108188453A true CN108188453A (en) | 2018-06-22 |
| CN108188453B CN108188453B (en) | 2023-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810101200.4A Active CN108188453B (en) | 2018-02-01 | 2018-02-01 | Multi-step correction non-common-flute drill bit for long chip cutting |
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| Country | Link |
|---|---|
| CN (1) | CN108188453B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109108340A (en) * | 2018-09-13 | 2019-01-01 | 郑忆依 | A kind of logical counterbore combined drill |
| CN112222488A (en) * | 2020-09-22 | 2021-01-15 | 华东理工大学 | Stepped drill bit capable of changing chip removal flow direction |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003334709A (en) * | 2002-05-13 | 2003-11-25 | Nippon Choko Kk | Stepped drill |
| US20100254779A1 (en) * | 2009-04-07 | 2010-10-07 | Hans Wedner | Solid step drill |
| CN102489753A (en) * | 2011-12-07 | 2012-06-13 | 苏州阿诺精密切削技术股份有限公司 | Non-cogrooved step drill |
| CN102489765A (en) * | 2011-12-07 | 2012-06-13 | 苏州阿诺精密切削技术股份有限公司 | Non-slot-shared step cutter |
| CN205324875U (en) * | 2016-01-06 | 2016-06-22 | 苏州锑玛精密机械有限公司 | Process ladder reamer of soft -magnetic nonrust rigid connection pole hole |
| CN208341820U (en) * | 2018-02-01 | 2019-01-08 | 苏州阿诺精密切削技术有限公司 | A kind of long non-gouge bit altogether of bits cutting multi-ladder amendment |
-
2018
- 2018-02-01 CN CN201810101200.4A patent/CN108188453B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003334709A (en) * | 2002-05-13 | 2003-11-25 | Nippon Choko Kk | Stepped drill |
| US20100254779A1 (en) * | 2009-04-07 | 2010-10-07 | Hans Wedner | Solid step drill |
| CN102489753A (en) * | 2011-12-07 | 2012-06-13 | 苏州阿诺精密切削技术股份有限公司 | Non-cogrooved step drill |
| CN102489765A (en) * | 2011-12-07 | 2012-06-13 | 苏州阿诺精密切削技术股份有限公司 | Non-slot-shared step cutter |
| CN205324875U (en) * | 2016-01-06 | 2016-06-22 | 苏州锑玛精密机械有限公司 | Process ladder reamer of soft -magnetic nonrust rigid connection pole hole |
| CN208341820U (en) * | 2018-02-01 | 2019-01-08 | 苏州阿诺精密切削技术有限公司 | A kind of long non-gouge bit altogether of bits cutting multi-ladder amendment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109108340A (en) * | 2018-09-13 | 2019-01-01 | 郑忆依 | A kind of logical counterbore combined drill |
| CN112222488A (en) * | 2020-09-22 | 2021-01-15 | 华东理工大学 | Stepped drill bit capable of changing chip removal flow direction |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108188453B (en) | 2023-11-10 |
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