CN105215434A - Drill bit - Google Patents
Drill bit Download PDFInfo
- Publication number
- CN105215434A CN105215434A CN201510810226.2A CN201510810226A CN105215434A CN 105215434 A CN105215434 A CN 105215434A CN 201510810226 A CN201510810226 A CN 201510810226A CN 105215434 A CN105215434 A CN 105215434A
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- CN
- China
- Prior art keywords
- flange
- guiding groove
- dregs guiding
- spiral dregs
- spiral
- 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.)
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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 discloses a kind of drill bit, comprise drillstock, bore body and apex point, described brill is provided with spiral dregs guiding groove with it, wherein, described spiral dregs guiding groove bottom surface is provided with dust lead portion, and dust lead portion moves towards along spiral dregs guiding groove the terminal position always extending to spiral dregs guiding groove from the original position of spiral dregs guiding groove; The left side in dust lead portion is near the helical centre of spiral dregs guiding groove, and the right side in dust lead portion and the right side wall of spiral dregs guiding groove are affixed; Dust lead portion is made up of the flange that at least N number of height is different thus makes spiral dregs guiding groove bottom surface → dust lead portion → brill body outer surface form the notch cuttype shape progressively raised, N >=2; Beneficial effect of the present invention is: chip removal speed is fast, the heat dispersion of raising point of a knife.
Description
Technical field
The present invention relates to a kind of drill bit.
Background technology
Drill bit (Drills) goes out through hole or blind hole in order to drilling on solid material, and can to the cutter of existing hole reaming; Existing drill bit mainly comprises drillstock, bores body and apex point, bore and offer spiral dregs guiding groove with it, be illustrated in figure 1 the sectional view of spiral dregs guiding groove in prior art, the central axis of this sectional view and spiral dregs guiding groove, angle between the right side wall 1 of spiral dregs guiding groove and the bottom surface 2 of spiral dregs guiding groove is generally 90 °, and the angle between the left side wall 3 of spiral dregs guiding groove and the bottom surface 2 of spiral dregs guiding groove is less than 90 ° and makes the left side wall 3 of spiral dregs guiding groove form a wedge angle towards spiral dregs guiding groove with brill body surface.Its operation principle mainly utilizes numerical control device or other process equipments by drillstock clamp column, then urges and makes bit, and utilize the apex point rotated to carry out cutting for converted products, adding man-hour chip can discharge along spiral dregs guiding groove.Because chip can strike the right side wall of spiral dregs guiding groove in motion process, affect the movement locus of chip so a recoil strength can be produced on chip thus greatly can reduce the chip removal ability of drill bit; And the running speed of drill bit is very high, therefore drill bit part very easily produces high temperature, the heat radiation of apex point can be made undoubtedly to be affected, so greatly reduce the service life of drill bit if the chip removal ability of drill bit reduces.
Summary of the invention
The technical problem that the present invention mainly solves is to provide the drill bit that a kind of chip removal ability is strong, service life is more lasting.
The invention discloses a kind of drill bit, comprise drillstock, bore body and apex point, described brill is provided with spiral dregs guiding groove with it, wherein, described spiral dregs guiding groove bottom surface is provided with dust lead portion, and dust lead portion moves towards along spiral dregs guiding groove the terminal position always extending to spiral dregs guiding groove from the original position of spiral dregs guiding groove; The left side in dust lead portion is near the helical centre of spiral dregs guiding groove, and the right side in dust lead portion and the right side wall of spiral dregs guiding groove are affixed; Dust lead portion is made up of the flange that at least N number of height is different thus makes spiral dregs guiding groove bottom surface → dust lead portion → brill body outer surface form the notch cuttype shape progressively raised, N >=2.
In chip process, and chip can be subject to bit produce the effect of centrifugal force and the rotation centerline of drill bit there is an angle, and set up an above-mentioned dust lead portion structure, reduce the striking face of chip undoubtedly thus reduce recoil strength, and make chip more easily can increase along ladder to the effect that chip can play a guiding more easily to paste the step surface of ladder and chip removal is carried out in spiral dregs guiding groove bottom surface, so the chip removal ability of drill bit can be increased, greatly improve the radiating rate of drill bit part, thus improve the service life of drill bit.
Wherein, the left side wall of spiral dregs guiding groove is a cancave cambered surface.
Adopt this kind of structure, compared with prior art can reduce the extruding force of chip to the left side wall of spiral dregs guiding groove undoubtedly, the service life that drill bit can be improved of break-in.
Wherein, the quantity N of flange 3 is respectively flange I, flange II and flange III, the left side wall of flange I overlaps with the helical centre of spiral dregs guiding groove, the right side wall of flange I overlaps with the left side wall of flange II, the right side wall of flange II overlaps with the left side wall of flange III, and the left side wall of flange III overlaps with the right side wall of spiral dregs guiding groove.
Adopt the design of three flanges, when considering that groove depth is fixed, three flanges can reduce the recoil strength to chip further, and three flanges processing are got up than being easier to.And three flanges also make the guide effect that plays chip more obvious, and improve the bond area between dust lead portion and chip.
Wherein, the upper surface of flange I, flange II and flange III is all parallel with spiral dregs guiding groove bottom surface.
Adopt this kind of structure, first consider that drill bit is in process, this kind of structure is more prone to processing, and the upper surface that during chip removal, a part for chip is more easily attached to flange I, flange II and flange III is discharged.
Wherein, the left side wall of flange I, flange II and flange III all with the spiral center line parallel of spiral dregs guiding groove.
Adopt this kind of structure, first consider that drill bit is in process, this kind of structure is more prone to processing, and the left side wall that during chip removal, a part for chip is more easily attached to flange I, flange II and flange III is discharged.
Wherein, the width of described flange I, flange II and flange III is all equal.
Wherein, the difference in height between flange I and spiral dregs guiding groove bottom surface is Δ d1, and flange II is Δ d2 with the difference in height of flange I, and flange III is Δ d3 with the difference in height of flange II, described Δ d1=Δ d2=Δ d3.
This kind of structure is adopted to ensure, the imaginary line be connected to form between flange I leftmost vertices, flange II leftmost vertices and flange III leftmost vertices 3 is a straight line, this design has taken into full account the angle that chip moves, greatly reduce the impact of chip to flange I, flange II and flange III, improve chip removal ability, thus further increase the life-span of drill bit.
Wherein, the angle between the imaginary line formed between flange I leftmost vertices, flange II leftmost vertices and flange III leftmost vertices 3 and spiral dregs guiding groove bottom surface is 10 °-20 °.
The angle controlled between this imaginary line and spiral dregs guiding groove bottom surface is exactly the gradient of chip when rising with ladder, and angle makes chip be more prone to rise along ladder further in 10 ° of-20 ° of intervals, and the effect strengthening dust lead portion guiding improves chip removal ability.
Wherein, the groove depth H=4 Δ d1 of spiral dregs guiding groove.
Accompanying drawing explanation
Fig. 1 is the sectional view of spiral dregs guiding groove in prior art.
Fig. 2 is the structural representation of inventive embodiments 1.
Fig. 3 is the sectional view with spiral dregs guiding groove central axis.
Detailed description of the invention
Below in conjunction with specific embodiments and the drawings, the invention will be further described:
Embodiment 1:
Shown in accompanying drawing 2-3, a kind of drill bit, comprises drillstock 1, bores body 2 and apex point 3, bore and offer spiral dregs guiding groove 4 with it, left side wall one cancave cambered surface 9 of spiral dregs guiding groove 4.
Spiral dregs guiding groove bottom surface 10 is provided with the dust lead portion 5 formed by flange I 6, flange II 7 and flange III 8.The left side wall of flange I 6 overlaps with the helical centre of spiral dregs guiding groove 4, the right side wall of flange I 6 overlaps with the left side wall of flange II 7, the right side wall of flange II 7 overlaps with the left side wall of flange III 8, and the left side wall of flange III 8 overlaps with the right side wall of spiral dregs guiding groove 4.Flange I 6, flange II 7 and flange III 8 move towards along spiral dregs guiding groove 4 terminal position always extending to spiral dregs guiding groove 4 from the original position of spiral dregs guiding groove 4.The left side wall of flange II 7 and flange III 8 all with the spiral center line parallel of spiral dregs guiding groove 4; The upper surface of flange I 6, flange II 7 and flange III 8 is all parallel with spiral dregs guiding groove bottom surface 10.So make spiral dregs guiding groove bottom surface 10 → flange, I 6 upper surfaces → flange II 7 upper surfaces → flange III 8 upper surface → brill body 2 outer surface form four step surfaces progressively raised.
The difference in height Δ d2=flange III 8 of difference in height Δ d1=flange II 7 between flange I 6 and spiral dregs guiding groove bottom surface 10 with flange I 6 and the groove depth H of the spiral dregs guiding groove 4 of the difference in height Δ d3=1/4 of flange II 7.
Included angle A between the imaginary line B formed between flange I 6 leftmost vertices, flange II 7 leftmost vertices and flange III 8 leftmost vertices 3 and spiral dregs guiding groove bottom surface is 14 °.
Claims (9)
1. a drill bit, comprise drillstock, bore body and apex point, described brill is provided with spiral dregs guiding groove with it, it is characterized in that: described spiral dregs guiding groove bottom surface is provided with dust lead portion, dust lead portion moves towards along spiral dregs guiding groove the terminal position always extending to spiral dregs guiding groove from the original position of spiral dregs guiding groove; The left side in dust lead portion is near the helical centre of spiral dregs guiding groove, and the right side in dust lead portion and the right side wall of spiral dregs guiding groove are affixed; Dust lead portion is made up of the flange that at least N number of height is different thus makes spiral dregs guiding groove bottom surface → dust lead portion → brill body outer surface form the notch cuttype shape progressively raised, N >=2.
2. a kind of drill bit according to claim 1, is characterized in that: the left side wall of spiral dregs guiding groove is a cancave cambered surface.
3. a kind of drill bit according to claim 1, it is characterized in that: the quantity N of flange 3 is respectively flange I, flange II and flange III, the left side wall of flange I overlaps with the helical centre of spiral dregs guiding groove, the right side wall of flange I overlaps with the left side wall of flange II, the right side wall of flange II overlaps with the left side wall of flange III, and the left side wall of flange III overlaps with the right side wall of spiral dregs guiding groove.
4. a kind of drill bit according to claim 3, is characterized in that: the upper surface of flange I, flange II and flange III is all parallel with spiral dregs guiding groove bottom surface.
5. a kind of drill bit according to claim 3, is characterized in that: the left side wall of flange I, flange II and flange III all with the spiral center line parallel of spiral dregs guiding groove.
6. a kind of drill bit according to claim 4 or 5, is characterized in that: the width of described flange I, flange II and flange III is all equal.
7. a kind of drill bit according to claim 6, it is characterized in that: the difference in height between flange I and spiral dregs guiding groove bottom surface is Δ d1, flange II is Δ d2 with the difference in height of flange I, and flange III is Δ d3 with the difference in height of flange II, described Δ d1=Δ d2=Δ d3.
8. a kind of drill bit according to claim 7, is characterized in that: the angle between the imaginary line formed between flange I leftmost vertices, flange II leftmost vertices and flange III leftmost vertices 3 and spiral dregs guiding groove bottom surface is 10 °-20 °.
9. a kind of drill bit according to claim 8, is characterized in that: the groove depth H=4 Δ d1 of spiral dregs guiding groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510810226.2A CN105215434B (en) | 2015-11-20 | 2015-11-20 | Drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510810226.2A CN105215434B (en) | 2015-11-20 | 2015-11-20 | Drill bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105215434A true CN105215434A (en) | 2016-01-06 |
| CN105215434B CN105215434B (en) | 2017-10-03 |
Family
ID=54984884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510810226.2A Active CN105215434B (en) | 2015-11-20 | 2015-11-20 | Drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105215434B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5856719A (en) * | 1981-09-26 | 1983-04-04 | Katsuhiro Matsushita | Combination drill |
| DE3316380A1 (en) * | 1983-05-05 | 1984-11-29 | Alfred 7306 Denkendorf Müller | Boring head |
| CN2827593Y (en) * | 2005-10-17 | 2006-10-18 | 余少华 | Drilling bit |
| CN102814535A (en) * | 2012-08-02 | 2012-12-12 | 泰兴市信达克刀具有限公司 | Solid carbide drill chip breaker groove for steel part and design method thereof |
| CN104942345A (en) * | 2014-03-24 | 2015-09-30 | 江苏天工工具有限公司 | Chip-breaking twist drill |
| CN205129015U (en) * | 2015-11-20 | 2016-04-06 | 庄再勇 | Drill |
-
2015
- 2015-11-20 CN CN201510810226.2A patent/CN105215434B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5856719A (en) * | 1981-09-26 | 1983-04-04 | Katsuhiro Matsushita | Combination drill |
| DE3316380A1 (en) * | 1983-05-05 | 1984-11-29 | Alfred 7306 Denkendorf Müller | Boring head |
| CN2827593Y (en) * | 2005-10-17 | 2006-10-18 | 余少华 | Drilling bit |
| CN102814535A (en) * | 2012-08-02 | 2012-12-12 | 泰兴市信达克刀具有限公司 | Solid carbide drill chip breaker groove for steel part and design method thereof |
| CN104942345A (en) * | 2014-03-24 | 2015-09-30 | 江苏天工工具有限公司 | Chip-breaking twist drill |
| CN205129015U (en) * | 2015-11-20 | 2016-04-06 | 庄再勇 | Drill |
Non-Patent Citations (1)
| Title |
|---|
| 赵德本: "《机械工程师新技术手册》", 31 December 1991, 河北科学技术出版社 * |
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| Publication number | Publication date |
|---|---|
| CN105215434B (en) | 2017-10-03 |
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| C06 | Publication | ||
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| TA01 | Transfer of patent application right |
Effective date of registration: 20170802 Address after: 325611 Industrial Zone, Qingjiang Town, Zhejiang, Yueqing Applicant after: YUEQING TIANZHONGTIAN TOOLS CO., LTD. Address before: 325611 Qingjiang, Zhejiang, Yueqing City, the town of ancient stone pier village Applicant before: Zhuang Zaiyong |
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