CN204018808U - A kind of drill bit for deep hole processing - Google Patents
A kind of drill bit for deep hole processing Download PDFInfo
- Publication number
- CN204018808U CN204018808U CN201420458583.8U CN201420458583U CN204018808U CN 204018808 U CN204018808 U CN 204018808U CN 201420458583 U CN201420458583 U CN 201420458583U CN 204018808 U CN204018808 U CN 204018808U
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- Prior art keywords
- main cutting
- drill bit
- cutting edge
- deep hole
- edge
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- 238000005520 cutting process Methods 0.000 claims abstract description 59
- 241001074085 Scophthalmus aquosus Species 0.000 claims abstract description 6
- 238000003754 machining Methods 0.000 abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000005553 drilling Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000002173 cutting fluid Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- Drilling Tools (AREA)
Abstract
The utility model provides a kind of drill bit for deep hole processing, in order to solve normal drill bit in the problem of carrying out easily occurring in deep hole machining process that breaking, chip removal are not smooth, service life is lower.The technical solution of the utility model comprises main cutting edge, front cutting edge, helicla flute, brill core, rear knife face, drill handle part, chip pocket, chisel edge and chip dividing groove.
Description
Technical field
The utility model relates to Cutting Tool Technology Used on NC field, is specifically related to a kind of drill bit for deep hole processing.
Background technology
Deep hole refers generally to the hole that draw ratio (i.e. the ratio in hole depth and aperture) is greater than 5 ~ 10.The subject matter existed in deep hole machining is chip breaking and chip removal, Cooling and Lubricator, and processing guiding.Tradition deep-hole machining tool has drill gun, spray is inhaled and bored.Drill gun is used for processing slim hole, adopting the processing mode of single-blade external chip discharging, because rigidity is lower, easily producing vibration, causes boring linearity bad, affects machining accuracy.The suction discharge that the inside and outside dual drilling pipe of drilling carries out cutting fluid is inhaled in spray, the space of chip removal is reduced, requires higher to the chip-breaking performance of rapidoprint, be only suitable for processing the material that evenly can be processed into C type bits.
The intensity of the bit leg material selection of oil drill bit and all stronger alloy material of viscosity, and have the part of interrupted cut in hole machined process, select drill gun easily adding breaking in man-hour, selects spray to inhale to bore that easily to produce chip removal smooth, blocking, even breaking.Need a kind of new drill bit pattern to solve a difficult problem for process simultaneously.
Summary of the invention
The utility model provides a kind of drill bit for deep hole processing, in order to solve normal drill bit in the problem of carrying out easily occurring in deep hole machining process that breaking, chip removal are not smooth, service life is lower.
The technical solution of the utility model is: comprise main cutting edge, front cutting edge, helicla flute, brill core, rear knife face and drill handle part, described drill bit also comprises chip pocket, chisel edge, chip dividing groove, described chisel edge is located on described brill core, described main cutting edge is positioned at bit face, comprise two the first main cutting edges, two the second main cutting edges, described two the first main cutting edges are located at chisel edge both sides along the radial direction of bit face respectively, and described two the second main cutting edges are located at two the first main cutting edge tail ends respectively; Described two groups of main cutting edge sides are respectively equipped with described chip pocket, and opposite side is rear knife face, in a center of symmetry with bit face center respectively, and described rear knife face is arc surface; Described chip dividing groove has two, after being located at two respectively on knife face; Described chisel edge two ends are provided with the contrary fillet in direction, and the described fillet other end is connected with rear knife face side.
As preferably, described in be positioned at the first main cutting edge of homonymy and the second main cutting edge and form drift angle outwardly, the angular range of described drift angle is 160 °-165 °.
As preferably, described two chip dividing grooves are unequal to the distance at bit face center.
As preferably, described chip dividing groove along the circumferential direction runs through on rear knife face.
As preferably, described bit face edge is provided with chamfering.
As preferably, the radius of corner R at described chisel edge two ends is R=0.5 × D+ (0.5 ~ 1.0) with the pass of boring core diameter D.
The beneficial effects of the utility model are:
1, bit face is provided with the first main cutting edge and the second main cutting edge, form the cutting edge at Double Tops angle, increase the length of main cutting edge, reduce the cutting force in cutting edge unit length, improve the deep hole machining cutting force of drill bit, improve thermal diffusivity and the durability of drill bit simultaneously.
2, rear knife face is provided with the chip dividing groove be in staggered distribution, and when solving gun drilling, the feature of chip breaking difficulty, is convenient to chip removal, also mitigates the load of drill bit.Also iron filings can be got narrower simultaneously, be more conducive to discharge.
3, fillet process is adopted to chisel edge two ends, reduce chisel edge length, reduce load, make centering more accurate, and it is concentrated to reduce original stress, extends cutter life.
4, rear knife face is arc surface, and stress concentration phenomenon when avoiding rear knife face crossing with rake face, is increased in the intensity of drill bit in deep hole machining, also can increase the contact area in working angles, plays the effect of cutting guiding.
5, the chamfering at bit face edge ensures the stable of bore size, reduces cutter burr simultaneously, removes stress concentration point, extends cutter life.
6, this drill bit can realize boring, cutting with scissors one-shot forming, reaches the high-precision requirement of machining hole, substantially increases production efficiency; Also can ensure the stability of size in process simultaneously.
Accompanying drawing explanation
Fig. 1 is front view of the present utility model.
Fig. 2 is the close-up schematic view at the drift angle place that in Fig. 1, the first main cutting edge and the second main cutting edge are formed.
Fig. 3 is the left view of Fig. 1.
Fig. 4 is the close-up schematic view at chisel edge place in Fig. 3.
Detailed description of the invention
Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing.
The present embodiment comprises main cutting edge, front cutting edge 6, helicla flute 7, bores core 9, rear knife face 10 and drill handle part 8, drill bit also comprises chip pocket 4, chisel edge 11, chip dividing groove 3, chisel edge 11 is located at and is bored on core 9, main cutting edge is positioned at bit face, comprise two the first main cutting edges, 5, two the second main cutting edges 2, two the first main cutting edges 5 are located at chisel edge 11 both sides along the radial direction of bit face respectively, and two the second main cutting edges 2 are located at two the first main cutting edge 5 tail ends respectively; Two groups of main cutting edge sides are respectively equipped with chip pocket 4, and opposite side is rear knife face 10, in a center of symmetry with bit face center respectively, and rear knife face 10 is arc surface; Chip dividing groove 3 has two, after being located at two respectively on knife face 10; Chisel edge 11 two ends are provided with the contrary fillet in direction 12, and fillet 12 other end is connected with rear knife face 10 side.
In the present embodiment, as preferably, be positioned at the first main cutting edge 5 of homonymy and the second main cutting edge 2 and form drift angle outwardly, the angle C of drift angle gets 161 °.
As preferably, two chip dividing grooves 3 are unequal to the distance at bit face center.
As preferably, chip dividing groove 3 along the circumferential direction runs through on rear knife face 10.
As preferably, bit face edge is provided with chamfering 1.
As preferably, in the present embodiment, the diameter D boring core 9 can value be 3mm, the radius of corner R=0.5 × 3+0.5=2mm at chisel edge 11 two ends.
When using this drill bit to carry out deep hole machining, first main cutting edge 5 and the second main cutting edge 2 pairs of workpiece cut, the scrap produced in cutting enters in the chip dividing groove 3 on rear knife face 10, and enter chip pocket 4 along chip dividing groove 3, namely disconnect after the rotation of cutter and the thrust of rear scrap make scrap enter chip pocket 4, form the scrap narrower, length is less, scrap enters helicla flute 7 through chip pocket 4 and discharges.
In the present embodiment, traditional main cutting edge is changed into the first main cutting edge 5 and the second main cutting edge 2 two sections, bit face is made to define the cutting edge at Double Tops angle, increase the length of main cutting edge, reduce the cutting force in cutting edge unit length, improve the deep hole machining cutting force of drill bit, improve thermal diffusivity and the durability of drill bit simultaneously.
In the present embodiment, have employed the chip dividing groove 3 be in staggered distribution, iron filings can be divided into narrower, be more conducive to discharge.When solving gun drilling, the feature of chip breaking difficulty, also mitigates the load of drill bit.
For the utility model, when above-mentioned other technologies feature is identical, the first main cutting edge 5 can also be 160 °, 162 °, 163 °, 164 °, 165 ° with the angle value C of the drift angle that the second main chip 2 tooth shape becomes.
Equally, for the utility model, boring core 9 diameter D can value be generally 4mm, 5mm, and therefore, when above-mentioned other technologies feature is identical, the value of the radius of corner R at chisel edge 11 two ends can also be 2.5mm, 3mm.
Claims (6)
1. the drill bit for deep hole processing, comprise main cutting edge, front cutting edge, helicla flute, brill core, rear knife face and drill handle part, it is characterized in that: described drill bit also comprises chip pocket, chisel edge, chip dividing groove, described chisel edge is located on described brill core, described main cutting edge is positioned at bit face, comprise two the first main cutting edges, two the second main cutting edges, described two the first main cutting edges are located at chisel edge both sides along the radial direction of bit face respectively, and described two the second main cutting edges are located at two the first main cutting edge tail ends respectively; Described two groups of main cutting edge sides are respectively equipped with described chip pocket, and opposite side is rear knife face, in a center of symmetry with bit face center respectively, and described rear knife face is arc surface; Described chip dividing groove has two, after being located at two respectively on knife face; Described chisel edge two ends are provided with the contrary fillet in direction, and the described fillet other end is connected with rear knife face side.
2. a kind of drill bit for deep hole processing according to claim 1, is characterized in that: described in be positioned at the first main cutting edge of homonymy and the second main cutting edge and form drift angle outwardly, the angular range of described drift angle is 160 °-165 °.
3. a kind of drill bit for deep hole processing according to claim 1, is characterized in that: described two chip dividing grooves are unequal to the distance at bit face center.
4. a kind of drill bit for deep hole processing according to claim 1, is characterized in that: described chip dividing groove along the circumferential direction runs through on rear knife face.
5. a kind of drill bit for deep hole processing according to claim 1, is characterized in that: described bit face edge is provided with chamfering.
6. a kind of drill bit for deep hole processing according to claim 1, is characterized in that: the radius of corner R at described chisel edge two ends is R=0.5 × D+ (0.5 ~ 1.0) with the pass of brill core (9) diameter D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420458583.8U CN204018808U (en) | 2014-08-14 | 2014-08-14 | A kind of drill bit for deep hole processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420458583.8U CN204018808U (en) | 2014-08-14 | 2014-08-14 | A kind of drill bit for deep hole processing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204018808U true CN204018808U (en) | 2014-12-17 |
Family
ID=52058718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420458583.8U Expired - Fee Related CN204018808U (en) | 2014-08-14 | 2014-08-14 | A kind of drill bit for deep hole processing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204018808U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104551121A (en) * | 2014-12-30 | 2015-04-29 | 苏州用朴合金工具有限公司 | Corn twist drill |
| CN106270666A (en) * | 2016-09-30 | 2017-01-04 | 深圳市金洲精工科技股份有限公司 | A kind of single-blade microbit |
| CN107186251A (en) * | 2017-07-24 | 2017-09-22 | 江苏飞达钻头股份有限公司 | A kind of Double Tops wedge angle chip dividing drill |
| CN107414147A (en) * | 2017-05-24 | 2017-12-01 | 江苏骏成工具有限公司 | A kind of single cutting bit |
| CN108526554A (en) * | 2018-07-09 | 2018-09-14 | 江苏飞达钻头股份有限公司 | Preceding chip dividing groove bores |
| CN112222487A (en) * | 2020-09-22 | 2021-01-15 | 华东理工大学 | Drill bit convenient to chip removal |
| CN112705760A (en) * | 2021-01-13 | 2021-04-27 | 阿斯图精密工具(上海)有限公司 | Drill and machining device |
| WO2024119830A1 (en) * | 2022-12-08 | 2024-06-13 | 株洲钻石切削刀具股份有限公司 | Efficient drilling tool with strong chip removal capacity |
| US12070807B2 (en) | 2021-03-18 | 2024-08-27 | Black & Decker Inc. | One-piece cutting head for a drill bit |
-
2014
- 2014-08-14 CN CN201420458583.8U patent/CN204018808U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104551121A (en) * | 2014-12-30 | 2015-04-29 | 苏州用朴合金工具有限公司 | Corn twist drill |
| CN106270666A (en) * | 2016-09-30 | 2017-01-04 | 深圳市金洲精工科技股份有限公司 | A kind of single-blade microbit |
| CN107414147A (en) * | 2017-05-24 | 2017-12-01 | 江苏骏成工具有限公司 | A kind of single cutting bit |
| CN107186251A (en) * | 2017-07-24 | 2017-09-22 | 江苏飞达钻头股份有限公司 | A kind of Double Tops wedge angle chip dividing drill |
| CN107186251B (en) * | 2017-07-24 | 2023-09-05 | 江苏飞达钻头股份有限公司 | Double-center angle chip drill |
| CN108526554A (en) * | 2018-07-09 | 2018-09-14 | 江苏飞达钻头股份有限公司 | Preceding chip dividing groove bores |
| CN108526554B (en) * | 2018-07-09 | 2023-09-15 | 江苏飞达钻头股份有限公司 | Front chip dividing groove drill |
| CN112222487A (en) * | 2020-09-22 | 2021-01-15 | 华东理工大学 | Drill bit convenient to chip removal |
| CN112705760A (en) * | 2021-01-13 | 2021-04-27 | 阿斯图精密工具(上海)有限公司 | Drill and machining device |
| US12070807B2 (en) | 2021-03-18 | 2024-08-27 | Black & Decker Inc. | One-piece cutting head for a drill bit |
| WO2024119830A1 (en) * | 2022-12-08 | 2024-06-13 | 株洲钻石切削刀具股份有限公司 | Efficient drilling tool with strong chip removal capacity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 |