CN109590518B - Self-locking quick-change drill - Google Patents
Self-locking quick-change drill Download PDFInfo
- Publication number
- CN109590518B CN109590518B CN201710919910.3A CN201710919910A CN109590518B CN 109590518 B CN109590518 B CN 109590518B CN 201710919910 A CN201710919910 A CN 201710919910A CN 109590518 B CN109590518 B CN 109590518B
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- CN
- China
- Prior art keywords
- circular cone
- right circular
- limiting surface
- cutter head
- inner cavity
- Prior art date
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Links
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 8
- 238000003754 machining Methods 0.000 description 3
- 229910000997 High-speed steel Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010079 rubber tapping 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/02—Devices for removing scrap from the cutting teeth of circular or non-circular cutters
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
The self-locking quick-change drill comprises a cutter body and a cutter head, wherein the rear end of the cutter head is provided with a right circular cone, the diameter of the right circular cone is gradually reduced from back to front, the front end of the cutter body is provided with a right circular cone inner cavity, and the right circular cone is in interference fit with the right circular cone inner cavity; the cutter head is provided with a transverse limiting surface A and a longitudinal limiting surface A; the cutter body is provided with a transverse limiting surface B and a longitudinal limiting surface B; the cutter body is provided with a chip removal groove B, and the cutter head is provided with a chip removal groove A; when the cutter head is installed in place in the cutter body, the longitudinal limiting surface A is abutted against the longitudinal limiting surface B, the transverse limiting surface A is abutted against the transverse limiting surface B, and the chip removal groove A is continuous with the chip removal groove B. The invention can quickly replace the cutter head, has high efficiency, can repeatedly use the cutter body, and saves cost; after screwing in, the cutter head and the cutter body are in interference fit, the drill bit can bear anticlockwise force given by a workpiece to be drilled, and the cutter head and the cutter body are always attached together under the action of the transverse limiting surface and the longitudinal limiting surface, so that self-locking clamping is achieved, and the drill bit can not fall off or loosen all the time during drilling.
Description
Technical Field
The present invention relates to a metal cutting tool, in particular a drill.
Background
The existing drill bit, the cutter head and the cutter body are integrated, and after the cutter head is passivated, the whole drill bit is required to be replaced, so that the cost of enterprises is increased.
In addition, with the rapid development of the machining field, the requirements on efficient, long-life and high-precision tools are becoming more and more stringent, and the replacement of a high-speed steel tool by a hard alloy tool is a great development trend, but the toughness of the hard alloy tool is poor, so that the application of the hard alloy tool in certain machining fields (especially tapping machining) is limited.
Disclosure of Invention
The invention aims to provide a self-locking quick-change drill, wherein a cutter head and a cutter body are connected in a clamping mode, so that the cutter head can be quickly replaced, and the cutter body can be used for multiple times.
In order to achieve the above purpose, the invention adopts the technical scheme that:
The self-locking quick-change drill comprises a cutter body and a cutter head, wherein the rear end of the cutter head is provided with a right circular cone which is coaxially arranged, the diameter of the right circular cone is gradually reduced from back to front, the front end of the cutter body is provided with a right circular cone inner cavity which is coaxially arranged, and the right circular cone is in interference fit with the right circular cone inner cavity;
The cutter head is provided with a limiting part A, the cutter body is provided with a limiting part B which is matched with the limiting part A, the limiting part A comprises a transverse limiting surface A and a longitudinal limiting surface A, the transverse limiting surface A is flush with the front end surface of the right circular cone, and the rear end of the longitudinal limiting surface A is perpendicularly intersected with the transverse limiting surface A; the limiting part B comprises a transverse limiting surface B and a longitudinal limiting surface B; the cutter body is provided with a chip removal groove B surrounded by a spiral line, and the cutter head is provided with a chip removal groove A surrounded by the spiral line;
The two limiting parts A and B are arranged at equal intervals in the circumferential direction by taking the axis of the cutter head as the center, and the two limiting parts B are arranged at equal intervals in the circumferential direction by taking the axis of the cutter body as the center; the chip removal groove B and the chip removal groove A are two;
When the cutter head is installed in place in the cutter body, 1 longitudinal limiting surface A is abutted against 1 longitudinal limiting surface B only, 1 transverse limiting surface A is abutted against 1 transverse limiting surface B only, and one chip groove A is continuous with one chip groove B only.
Further, the two junk slots A form four edges on the right circular cone, and a part of the four edges are ground along the radial direction of the four edges to form four inclined planes.
Wherein, the taper of the right circular cone is the same as that of the right circular cone inner cavity.
Further, the cone angles of the right circular cone and the right circular cone inner cavity are 6 degrees.
Further preferably, the fit tolerance of the right circular cone and the right circular cone inner cavity is 0.002-0.005.
Further, the diameter of the front end of the right circular cone is 9.455mm, and the length of the right circular cone is 8mm; the length of the right circular cone inner cavity is 8mm, and the diameter of the front end of the right circular cone inner cavity is 9.45mm.
Further, the cutter body is made of alloy steel, and the cutter head is made of hard alloy.
Further, the rear end of the right circular cone is provided with a cylinder which is coaxially arranged, and the rear end of the right circular cone inner cavity is provided with a circular inner cavity which is matched with the cylinder. The cylinder may play a role in positioning.
Compared with the prior art, the invention has the following advantages:
According to the invention, the cutter head is connected with the cutter body in a clamping manner, the cutter head which is passivated after use can be continuously processed by only rapidly replacing the cutter head, the cutter body can be used for multiple times, and the efficiency is high; the right circular cone of tool bit will closely paste with the right circular cone inner chamber face of cutter body after the screw in, forms interference fit, and the drill bit can receive the anticlockwise power that a work piece gave when drilling, and the effect of horizontal spacing face and vertical spacing face makes tool bit and cutter body laminating all the time, reaches the auto-lock chucking, cooperates closely between tool bit and the cutter body, can not drop or become flexible all the time when drilling, and the chucking mode makes the change of tool bit convenient fast moreover.
Drawings
FIG. 1 is a schematic view of a tool bit according to the present invention;
FIG. 2 is a schematic view of the A-direction of FIG. 1;
FIG. 3 is a schematic view of the B-direction of FIG. 2;
FIG. 4 is a schematic view of the structure of the cutter body according to the present invention;
FIG. 5 is a reference view of a tool tip;
FIG. 6 is a reference diagram I;
FIG. 7 is a reference diagram II;
FIG. 8 is a reference diagram III;
FIG. 9 is a reference diagram;
FIG. 10 is a reference diagram;
FIG. 11 is a reference diagram;
FIG. 12 is a reference to FIG. seven;
fig. 13 is a reference diagram eight;
fig. 14 is a reference diagram nine;
in the figure: the cutter comprises a cutter body 1, a cutter head 2, a right circular cone 3, a right circular cone inner cavity 4, a transverse limiting surface A5, a longitudinal limiting surface A6, a transverse limiting surface B7, a longitudinal limiting surface B8, a chip groove B9, a chip groove A10, an edge 11, an inclined surface 12, a cylinder 13 and a circular inner cavity 14.
Detailed Description
In order to make the technical scheme and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings.
As shown in fig. 1-4, the self-locking quick-change drill disclosed by the invention comprises a cutter body 1 and a cutter head 2, wherein the cutter body 1 is made of alloy steel, and the cutter head 2 is made of hard alloy. The rear end of the cutter head 2 is provided with a right circular cone 3 which is coaxially arranged, the diameter of the right circular cone 3 is gradually reduced from back to front, the front end of the cutter body 1 is provided with a right circular cone inner cavity 4 which is coaxially arranged, and the right circular cone 3 is in interference fit with the right circular cone inner cavity 4. The rear end of the right circular cone 3 is provided with a cylinder 13 coaxially arranged, and the rear end of the right circular cone inner cavity 4 is provided with a circular inner cavity 14 matched with the cylinder 13. The cylinder 13 may function as a positioning.
The taper angles of the right circular cone 3 and the right circular cone inner cavity 4 are the same, and the taper angles of the right circular cone 3 and the right circular cone inner cavity 4 are all 6 degrees. The fit tolerance of the regular cone 3 and the regular cone inner cavity 4 is 0.002-0.005, for example, the diameter of the front end of the regular cone 3 is 9.455mm, and the length of the regular cone 3 is 8mm; the length of the right circular cone inner cavity 4 is 8mm, and the diameter of the front end of the right circular cone inner cavity 4 is 9.45mm.
The cutter head 2 is provided with a limiting part A, the cutter body 1 is provided with a limiting part B matched with the limiting part A, the limiting part A comprises a transverse limiting surface A5 and a longitudinal limiting surface A6, the transverse limiting surface A5 is flush with the front end surface of the right circular cone 3, and the rear end of the longitudinal limiting surface A6 is perpendicularly intersected with the transverse limiting surface A5; the limiting part B comprises a transverse limiting surface B7 and a longitudinal limiting surface B8; the cutter body 1 is provided with a chip groove B9 which is surrounded by a spiral line, and the cutter head 2 is provided with a chip groove A10 which is surrounded by the spiral line.
As shown in fig. 6 and 7, two limiting portions a and B are provided, the two limiting portions a are provided at equal intervals in the circumferential direction with the axis of the cutter head 2 as the center, and the two limiting portions B are provided at equal intervals in the circumferential direction with the axis of the cutter body 1 as the center; the chip removal groove B9 and the chip removal groove A10 are two.
As shown in fig. 1, 2,3, 5 and 6, the two junk slots a10 form four edges 11 on the right circular cone 3, and a part of the four edges 11 are ground to form four inclined surfaces 12 along the radial direction respectively, so that the size of the contact part of the right circular cone 3 and the edge of the right circular cone inner cavity 4 is reduced when the tool bit 2 is put in. As shown in fig. 9, the cutter head 2 is firstly placed in the cutter body 1 by utilizing the vacancy at the joint of the chip removal groove B and the right circular cone inner cavity 4, and the four inclined planes 12 enable the cutter head 2 to have a certain gap when being placed in the cutter body 1, so that the cutter head cannot be blocked from being placed. Meanwhile, when the cutter head 2 rotates, the front end of the right circular cone inner cavity 4 is in interference fit, and the fit surface is bigger and bigger along with the increase of the rotation angle.
As shown in fig. 8, 10 and 11, when the tool bit is rotated clockwise, the part, which is pressed by the conical cavity and the conical body, is only a small part in the circle, the tool bit can be slowly screwed in by using the tool unloading frame, the part, which is pressed and matched with the tool body, of the tool bit is increased, the matched surface is increased, the inclined surface 12 plays a transitional role until the tool bit is finally matched in place, and the screwing in is easier.
As shown in fig. 12, 13 and 14, when the cutter head 2 is mounted in place in the cutter body 1,1 longitudinal limit surface A6 abuts against 1 longitudinal limit surface B8 only, 1 transverse limit surface A5 abuts against 1 transverse limit surface B7 only, and one chip groove a10 abuts against one chip groove B9 only, and at this time, the surfaces are closely adhered without a gap. Under the action of the longitudinal limiting surface A6 and the longitudinal limiting surface B8, the cutter head 2 and the cutter body 1 are limited in the circumferential direction; under the action of the transverse limiting surface A5 and the transverse limiting surface B7, the cutter head 2 and the cutter body 1 are limited in the axial direction.
As shown in fig. 13 and 14, the tool bit is always subjected to an axial component force, so that the tool bit is tightly attached to the tool body. When the tool bit 2 is screwed in place, the tool bit is pressed by interference fit, the tool bit can be acted by F1 and F2, and due to taper, F1 and F2 generate an axial component force F3, and F3 enables the tool bit 2 to be tightly attached to the tool body 1, so that the locking purpose is achieved; when the drilling is carried out, the tool bit rotates clockwise, the cutting edge is subjected to anticlockwise force given by a workpiece, and the tool bit is firmly attached to the tool body due to the action of the transverse limiting surface and the longitudinal limiting surface, so that self-locking clamping is achieved, the tool bit can not fall off or loose all the time during the drilling, the tool bit and the tool body are tightly matched, and the clamping mode enables the tool bit to be replaced quickly and conveniently, so that the efficiency is high. When the cutter is used, the cutter body can be used for multiple times, and the cost is saved as long as the cutter head passivated after use is quickly replaced.
Of course, the present invention is capable of other various embodiments and its several details are capable of modification and variation in light of the present invention by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (6)
1. Self-locking type quick change bores, its characterized in that: the cutter comprises a cutter body (1) and a cutter head (2), wherein a right circular cone (3) is coaxially arranged at the rear end of the cutter head (2), the diameter of the right circular cone (3) gradually decreases from back to front, a right circular cone inner cavity (4) is coaxially arranged at the front end of the cutter body (1), the taper of the right circular cone (3) is the same as that of the right circular cone inner cavity (4), and the right circular cone (3) is in interference fit with the right circular cone inner cavity (4);
The cutter head (2) is provided with a limiting part A, the cutter body (1) is provided with a limiting part B which is matched with the limiting part A, the limiting part A comprises a transverse limiting surface A (5) and a longitudinal limiting surface A (6), the transverse limiting surface A (5) is flush with the front end surface of the right circular cone (3), and the rear end of the longitudinal limiting surface A (6) is perpendicularly intersected with the transverse limiting surface A (5); the limiting part B comprises a transverse limiting surface B (7) and a longitudinal limiting surface B (8); the cutter body (1) is provided with a chip removal groove B (9) surrounded by a spiral line, and the cutter head (2) is provided with a chip removal groove A (10) surrounded by the spiral line;
The two limiting parts A and B are arranged at equal intervals in the circumferential direction by taking the axis of the cutter head (2) as the center, and the two limiting parts B are arranged at equal intervals in the circumferential direction by taking the axis of the cutter body (1) as the center; the chip removal groove B (9) and the chip removal groove A (10) are two; the two chip removal grooves A (10) form four edges (11) on the right circular cone (3), and a part of the four edges (11) are ground along the radial direction to form four inclined planes (12);
The tool bit (2) is put into the tool body (1) by utilizing the vacancy at the joint of the chip groove B (9) and the right circular cone inner cavity (4); when the cutter head (2) is installed in place in the cutter body (1), the 1 longitudinal limiting surface A (6) is abutted against the 1 longitudinal limiting surface B (8) only, the 1 transverse limiting surface A (5) is abutted against the 1 transverse limiting surface B (7) only, and the one chip groove A (10) is continuous with the one chip groove B (9) only.
2. The self-locking quick change drill of claim 1, wherein: the cone angles of the right circular cone (3) and the right circular cone inner cavity (4) are 6 degrees.
3. The self-locking quick change drill according to claim 1 or 2, characterized in that: the fit tolerance of the right circular cone (3) and the right circular cone inner cavity (4) is 0.002-0.005.
4. The self-locking quick change drill of claim 1, wherein: the diameter of the front end of the regular cone (3) is 9.455mm, and the length of the regular cone (3) is 8mm; the length of the right circular cone inner cavity (4) is 8mm, and the diameter of the front end of the right circular cone inner cavity (4) is 9.45mm.
5. The self-locking quick change drill of claim 1, wherein: the cutter body (1) is made of alloy steel, and the cutter head (2) is made of hard alloy.
6. The self-locking quick change drill of claim 1, wherein: the rear end of the right circular cone (3) is provided with a cylinder (13) which is coaxially arranged, and the rear end of the right circular cone inner cavity (4) is provided with a circular inner cavity (14) which is matched with the cylinder (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710919910.3A CN109590518B (en) | 2017-09-30 | 2017-09-30 | Self-locking quick-change drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710919910.3A CN109590518B (en) | 2017-09-30 | 2017-09-30 | Self-locking quick-change drill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109590518A CN109590518A (en) | 2019-04-09 |
| CN109590518B true CN109590518B (en) | 2024-06-21 |
Family
ID=65955744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710919910.3A Active CN109590518B (en) | 2017-09-30 | 2017-09-30 | Self-locking quick-change drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109590518B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112388035B (en) * | 2020-11-05 | 2022-07-01 | 成都工具研究所有限公司 | Modular rotating tool and installation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104759664A (en) * | 2015-04-21 | 2015-07-08 | 成都锋宜精密工具制造有限公司 | Self-locking type head-replaceable carbide drill |
| CN207309028U (en) * | 2017-09-30 | 2018-05-04 | 成都成量工具集团有限公司 | Self-locking fast replacing drill |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU523307B2 (en) * | 1977-11-02 | 1982-07-22 | Raymond Garnet Hillier and Elizabeth Jean Hillier | Drilling bit |
| US7651303B2 (en) * | 2007-03-06 | 2010-01-26 | Milwaukee Electric Tool Corporation | Conduit reamer tool element |
| CN201195211Y (en) * | 2008-01-25 | 2009-02-18 | 四川天虎工具有限责任公司 | Mechanically-clamped insection type drill |
-
2017
- 2017-09-30 CN CN201710919910.3A patent/CN109590518B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104759664A (en) * | 2015-04-21 | 2015-07-08 | 成都锋宜精密工具制造有限公司 | Self-locking type head-replaceable carbide drill |
| CN207309028U (en) * | 2017-09-30 | 2018-05-04 | 成都成量工具集团有限公司 | Self-locking fast replacing drill |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109590518A (en) | 2019-04-09 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240524 Address after: No. 199, South Section 1, ring road, Sanhe street, Xindu District, Chengdu, Sichuan 610000 Applicant after: Chengdu Xincheng Tools Co.,Ltd. Country or region after: China Address before: No. 199, South Section 1, Ring Road, Xindu District, Chengdu City, Sichuan Province, 610000 Applicant before: CHENGDU CHENGLIANG TOOLS GROUP Co.,Ltd. Country or region before: China |
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| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |