CN207887935U - Drill bit with flank chip dividing groove - Google Patents
Drill bit with flank chip dividing groove Download PDFInfo
- Publication number
- CN207887935U CN207887935U CN201721223560.9U CN201721223560U CN207887935U CN 207887935 U CN207887935 U CN 207887935U CN 201721223560 U CN201721223560 U CN 201721223560U CN 207887935 U CN207887935 U CN 207887935U
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- dividing groove
- chip dividing
- flank
- chip
- drill 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.)
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Abstract
The utility model has the drill bit of flank chip dividing groove, including cutting edge and shank, and a pair of of chip dividing groove is provided on flank, that is, knife spine of cutting edge；Xiyanping injection is carried out again in the standard fried dough twist drill end of the apex point through cross reconditioning, in unbearable symmetrical a pair of of the V-arrangement chip dividing groove of flank, that is, knife spine upper edge of cutting edge, cutting swarf is disconnected, convenient for chip removal, chip removal ability can be improved, cutting vibrations are reduced, improves and bores surface accuracy, extend drilling life of bit.
Description
Technical field
The utility model is related to a kind of drill bits with flank chip dividing groove.
Background technology
When being machined drilling in machine industry, generally use standard fluted drill carries out drilling drilling, due to drill bit
There are many defects for itself, and are cut in the state of semiclosed, and rotating speed is high, cutting output is big, chip removal is again very tired
Difficulty, so the machining accuracy in hole is low, hole wall surface is coarse；To improve standard fluted drill performance, drill bit factory is in manufacturer's standard fiber crops
When flower bores, position centering accuracy is improved by increasing the apex point of cross reconditioning in the prior art, avoids hole scattering；It reduces
Drill load, reduces fever, improves drilling life of bit.
But the above improvement drill bit drilling when, drilling cuttings is wide, start drill load it is big, be also easy to produce cutting and tremble, shake,
It is final to influence product service life.
Invention content
Technical problem to be solved by the utility model is to provide a kind of chip removal ability is strong, cutting vibrations are few, and drill bit uses
Long lifespan, the drill bit with flank chip dividing groove.
The utility model has the drill bit of flank chip dividing groove, including cutting edge and shank, it is characterised in that：Cutting edge
Flank is provided with a pair of of chip dividing groove on knife spine；
The pair of chip dividing groove is symmetrically distributed in cutting edge flank；
The chip dividing groove depth is slightly larger than bit bore feed；
The chip dividing groove trend, which is located at, to be moved towards with bit face profile to unbearable concentric circumferences；
The chip dividing groove section is V-arrangement；
The chip dividing groove depth is 0.3~0.5mm.
The utility model have flank chip dividing groove drill bit, the apex point through cross reconditioning standard fried dough twist drill end again
Xiyanping injection is carried out, in unbearable symmetrical a pair of of the V-arrangement chip dividing groove of flank, that is, knife spine upper edge of cutting edge so that cutting swarf can break
It opens, is convenient for chip removal, chip removal ability can be improved, reduce cutting vibrations, improve and bore surface accuracy, extend drilling life of bit.
Description of the drawings
Fig. 1 is the drill bit planar structure schematic diagram that the utility model embodiment has flank chip dividing groove；
Fig. 2 is the left view enlarged diagram of Fig. 1；
Fig. 3 is the drill bit dimensional structure diagram that the utility model embodiment has flank chip dividing groove.
Specific implementation mode
As shown, a kind of drill bit with flank chip dividing groove, including cutting edge 2 and shank 1, the rear knife of cutting edge 2
Face is provided with a pair of of chip dividing groove 3 on knife spine；Cutting swarf is disconnected, chip removal is convenient for.
A pair of of chip dividing groove is symmetrically distributed in cutting edge flank；Cutting swarf can be disconnected uniformly, chip removal of being more convenient for.
3 depth of chip dividing groove is slightly larger than bit bore feed；, convenient for the chip that fractures.
The trend of chip dividing groove 3, which is located at, to be moved towards with bit face profile to unbearable concentric circumferences；It is same with bit direction
Walk the chip that fractures.
3 section of chip dividing groove is V-arrangement；Chip is fractureed after entering chip dividing groove 3 by V-shaped groove.
Specifically, 3 depth of chip dividing groove is 0.3~0.5mm, preferentially selects 0.4mm.
The utility model have flank chip dividing groove drill bit, the apex point through cross reconditioning standard fried dough twist drill end again
Xiyanping injection is carried out, in unbearable symmetrical a pair of of the V-arrangement chip dividing groove of flank, that is, knife spine upper edge of cutting edge so that cutting swarf can break
It opens, is convenient for chip removal, chip removal ability can be improved, reduce cutting vibrations, improve and bore surface accuracy, extend drilling life of bit.
Specifically, special point of bits processing is carried out again in the standard fluted drill of the apex point through cross reconditioning.
Chip dividing groove profile moves towards on the one hand in concentric circumferences, to ensure cutting surface（Base cone shape）To continuing to bore processing nothing
The influences such as friction, obstruction；
Chip dividing groove depth（V-arrangement）：Feed when slightly larger than bit bore（Mm/r. 0.3mm~0.5mm is generally taken), and it is whole
It is almost the same with flank depth on a arc section, ensure that related cutting edge has suitable relief angle.
Claims (4)
1. a kind of drill bit with flank chip dividing groove, including cutting edge（2）And shank（1）, it is characterised in that：Cutting edge（2）
Flank, i.e., a pair of of chip dividing groove is provided on knife spine（3）；The chip dividing groove（3）Trend is located to be moved towards with bit face profile
To unbearable concentric circumferences；The chip dividing groove（3）Section is V-arrangement.
2. the drill bit with flank chip dividing groove according to claim 1, it is characterised in that：The pair of chip dividing groove（3）It is right
Title is distributed in cutting edge（2）In flank.
3. the drill bit with flank chip dividing groove according to claim 1, it is characterised in that：The chip dividing groove（3）Depth is omited
More than bit bore feed.
4. the drill bit with flank chip dividing groove according to claim 1, it is characterised in that：The chip dividing groove（3）Depth is
0.3~0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721223560.9U CN207887935U (en) | 2017-09-22 | 2017-09-22 | Drill bit with flank chip dividing groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721223560.9U CN207887935U (en) | 2017-09-22 | 2017-09-22 | Drill bit with flank chip dividing groove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207887935U true CN207887935U (en) | 2018-09-21 |
Family
ID=63547657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721223560.9U Active CN207887935U (en) | 2017-09-22 | 2017-09-22 | Drill bit with flank chip dividing groove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207887935U (en) |
-
2017
- 2017-09-22 CN CN201721223560.9U patent/CN207887935U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |