CN214108929U - Modularization shaping drill bit - Google Patents
Modularization shaping drill bit Download PDFInfo
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- CN214108929U CN214108929U CN202022760706.1U CN202022760706U CN214108929U CN 214108929 U CN214108929 U CN 214108929U CN 202022760706 U CN202022760706 U CN 202022760706U CN 214108929 U CN214108929 U CN 214108929U
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- wedge
- blade
- positioning groove
- drill bit
- chamfer step
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Abstract
The utility model provides a modularization shaping drill bit, including cutter arbor and blade, the afterbody of cutter arbor is equipped with the knife tip, be equipped with first chamfer step and second chamfer step on the cutter arbor, first chamfer step is located between knife tip, the second chamfer step, all be equipped with wedge positioning groove on first chamfer step, the second chamfer step, the blade is fixed on the wedge positioning groove. The utility model has the advantages that: the blade is arranged on the wedge-shaped positioning groove, the positioning and supporting area of the blade is increased, a wedge-shaped positioning structure is formed, reliable positioning can be achieved, the blade is not prone to breakage and failure, and the rejection rate of workpieces and cutters is reduced.
Description
Technical Field
The utility model relates to a drill bit especially relates to a modularization shaping drill bit.
Background
The hole machining is a machining process that the cutter does main rotation motion and the cutter or the workbench moves up and down in an auxiliary mode. A modular drill bit is a composite tool that is a combination of a support arbor and a cutting insert.
The flange center hole is machined at the existing automobile crankshaft line station, a modular drill bit is usually adopted, but the cutter bar of the existing modular drill bit has the problem that the cutter is broken frequently due to the fact that the cutter bar of the existing modular drill bit has a second step and is full of blades, and therefore the workpiece is scrapped and the cutter cost is increased.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model provides a modularization shaping drill bit.
The utility model provides a modularization shaping drill bit, including cutter arbor and blade, the afterbody of cutter arbor is equipped with the knife tip, be equipped with first chamfer step and second chamfer step on the cutter arbor, first chamfer step is located between knife tip, the second chamfer step, all be equipped with wedge positioning groove on first chamfer step, the second chamfer step, the blade is fixed on the wedge positioning groove, wedge positioning groove is the pentagon, has afterbody wedge angle, the angle of afterbody wedge angle is between 45 degrees to 75 degrees, wedge positioning groove has at least three location side, the blade is laminated with every location side respectively mutually.
As a further improvement of the utility model, the angle of the tail wedge angle is 60 degrees.
As a further improvement, the tank bottom of the wedge-shaped positioning groove is provided with a blade locking threaded hole, and the blade is installed through the screw and the blade locking threaded hole in the wedge-shaped positioning groove.
As a further improvement of the utility model, the tail wedge angle faces to the head of the cutter bar.
As a further improvement, the cutter bar is provided with a chip groove, and the wedge-shaped positioning groove on the first chamfer step and the second chamfer step is located in the chip groove.
As a further improvement of the utility model, the chip groove is kept away from the one end of knife tip is the arc derivation end.
As a further improvement of the present invention, the angle of the first chamfer step is 118 degrees.
As a further improvement of the present invention, the angle of the second chamfer step is 60 degrees.
The utility model has the advantages that: through the scheme, the blade is arranged on the wedge-shaped positioning groove, the positioning and supporting area of the blade is increased, the wedge-shaped positioning structure is formed, reliable positioning can be realized, the blade is not prone to collapse, failure is not prone to failure, and the rejection rate of workpieces and tools is reduced.
Drawings
Fig. 1 is a schematic view of a modular formed drill bit of the present invention.
Fig. 2 is a schematic view of a wedge-shaped positioning groove of a modular drill of the present invention.
Fig. 3 is another schematic view of the wedge-shaped positioning groove of the modular drill of the present invention.
Detailed Description
The present invention will be further described with reference to the following description and embodiments.
As shown in fig. 1 to 3, a modularization shaping drill bit, including cutter arbor 1 and blade, the afterbody of cutter arbor 1 is equipped with knife tip 5, be equipped with first chamfer step 7 and second chamfer step 8 on the cutter arbor 1, first chamfer step 7 is located between knife tip 5, the second chamfer step 8, be equipped with wedge positioning groove 3 on the first chamfer step 7, be equipped with wedge positioning groove 4 on the second chamfer step 8, wedge positioning groove 3, wedge positioning groove 4's shape is the same, and is not of uniform size, for example wedge positioning groove 4 slightly is less than wedge positioning groove 3, fixes two blades respectively on wedge positioning groove 3, wedge positioning groove 4.
The wedge-shaped positioning groove 3 is taken as an example for explanation: the wedge-shaped positioning groove 3 is pentagonal and is provided with a tail wedge angle 9. The tail wedge angle 9 is between 45 degrees and 75 degrees, and the tail wedge angle 9 is preferably 60 degrees, and may be any one of 45 degrees, 50 degrees, 55 degrees, 65 degrees, 70 degrees, and 75 degrees. The wedge-shaped positioning groove 3 has at least three positioning side surfaces 10, preferably four positioning side surfaces 10, and the blade is respectively attached to the four positioning side surfaces 10. The bottom of the wedge-shaped positioning groove 3 is provided with a blade locking threaded hole 6, and the blade is installed in the wedge-shaped positioning groove 3 through a screw and the blade locking threaded hole 6. The tail wedge angle 9 faces the head of the tool holder 1.
The tool bar 1 is provided with a chip groove 2, and the wedge- shaped positioning grooves 3 and 4 on the first chamfer step 7 and the second chamfer step 8 are both positioned in the chip groove 2.
The end of the chip removal groove 2 far away from the tool nose 5 is an arc-shaped leading-out end 11, so that chip removal is facilitated.
The angle of the first chamfer step 7 is preferably 118 degrees.
The angle of the second chamfer step 8 is preferably 60 degrees.
The utility model provides a pair of modularization shaping drill bit adopts wedge positioning groove 3, wedge positioning groove 4 in order to increase the location support area of blade, and the blade is unanimous with location side 10 appearances, and the blade assembly is on wedge positioning groove 3 or wedge positioning groove 4, and it is spacing through four location side 10 around the installation face, simple structure, blade simple to operate can realize reliable location, is difficult for collapsing the sword, is difficult for becoming invalid, has reduced the disability rate of work piece and cutter.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (5)
1. A modular formed drill bit, comprising: including cutter arbor and blade, the afterbody of cutter arbor is equipped with the knife tip, be equipped with first chamfer step and second chamfer step on the cutter arbor, first chamfer step is located between knife tip, the second chamfer step, all be equipped with wedge positioning groove on first chamfer step, the second chamfer step, the blade is fixed on the wedge positioning groove, wedge positioning groove is the pentagon, has afterbody wedge angle, the angle of afterbody wedge angle is between 45 degrees to 75 degrees, wedge positioning groove has at least three location side, the blade laminates with every location side respectively mutually.
2. The modular shaping drill bit of claim 1, wherein: the angle of the tail wedge angle is 60 degrees.
3. The modular shaping drill bit of claim 1, wherein: the tail wedge angle faces the head of the cutter bar.
4. The modular shaping drill bit of claim 1, wherein: the cutter bar is provided with a chip groove, and the wedge-shaped positioning grooves on the first chamfer step and the second chamfer step are located in the chip groove.
5. The modular shaping drill bit of claim 4, wherein: one end of the chip groove, which is far away from the tool nose, is an arc-shaped leading-out end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022760706.1U CN214108929U (en) | 2020-11-25 | 2020-11-25 | Modularization shaping drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022760706.1U CN214108929U (en) | 2020-11-25 | 2020-11-25 | Modularization shaping drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214108929U true CN214108929U (en) | 2021-09-03 |
Family
ID=77506724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022760706.1U Active CN214108929U (en) | 2020-11-25 | 2020-11-25 | Modularization shaping drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214108929U (en) |
-
2020
- 2020-11-25 CN CN202022760706.1U patent/CN214108929U/en active Active
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