CN214079435U - Composite cutter for drilling, tapping and chamfering - Google Patents
Composite cutter for drilling, tapping and chamfering Download PDFInfo
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- CN214079435U CN214079435U CN202021974649.0U CN202021974649U CN214079435U CN 214079435 U CN214079435 U CN 214079435U CN 202021974649 U CN202021974649 U CN 202021974649U CN 214079435 U CN214079435 U CN 214079435U
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- drill bit
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- chamfering
- tapping
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Abstract
A compound cutter for drilling, tapping and chamfering comprises a cutter handle and a drill bit arranged at the end part of the cutter handle, wherein the cutter handle is sequentially provided with a tapping section and a chamfering section from one end of the drill bit, the cutter handle is also provided with two chip grooves extending from one end of the drill bit to one side of the chamfering section, and the chip grooves extend spirally from one end of the drill bit; the tapping section comprises a peripheral edge for forming threads, and the chamfering section comprises a chamfering edge; when the drill bit cuts to the tapping section and enters the through hole, the peripheral edge and the workpiece are cut, threads are formed in the through hole, the chamfer edge completes the processing of a chamfer outside the through hole along with the completion of the processing of the through hole, the composite cutter reduces the switching of the cutter in the processing process, the processing efficiency is greatly improved, the processing period is shortened, the investment of the cutter cost is reduced, the processing quality is ensured through the size of the composite cutter, and the qualified rate of finished products is improved.
Description
Technical Field
The utility model relates to a shaping cutter, concretely relates to gang tool for drilling, tapping and chamfer.
Background
Along with the inside complicacy of product constantly promotes, for the demand that satisfies terminal customer complicacy product outward appearance and quality, adopt a position of many cutter processing, the cutter quantity of accomplishing whole product constantly increases, along with the increase of cutter quantity, also increases thereupon at the tool changing number of times of processing the product, not only can improve product processing cycle greatly, can improve product cost expense moreover.
If the processing of drilling, tapping, positive and negative chamfer needs one drill bit, one screw tap, one chamfer sword in accomplishing on the work piece, and the process is numerous, the cycle length of processing, the cost is higher, and the finished product qualification rate is not high, the part of processing out is scrapped easily, and prior art exists the improvement part.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem, the utility model provides a gang tool for drilling, tapping and chamfer, through gang tool's drill bit, tapping section and chamfer section, accomplish the work step to tapping and the outer chamfer in hole in the drilling is accomplished to the drill bit when accomplishing drilling, the switching of cutter in the course of working has been reduced, the efficiency of processing has been improved greatly, the cycle of processing has been shortened, the input of cutter cost has been reduced, and the quality of processing is guaranteed to size through gang tool, the off-the-shelf qualification rate is improved.
In order to achieve the above purpose, the technical scheme of the utility model is as follows: a compound cutter for drilling, tapping and chamfering comprises a cutter handle and a drill bit arranged at the end part of the cutter handle, wherein the cutter handle is sequentially provided with a tapping section and a chamfering section from one end of the drill bit, the cutter handle is also provided with two chip grooves extending from one end of the drill bit to one side of the chamfering section, and the chip grooves extend spirally from one end of the drill bit; the tapping section comprises a peripheral edge for forming threads, and the chamfering section comprises a chamfering edge.
Through adopting above-mentioned technical scheme, the drill bit of combined cutting tool can be at the surface machining through-hole of work piece, when the drill bit cutting gets into the through-hole to the tapping section, the cutting takes place with the work piece all over the sword, form the screw thread in the through-hole, along with the completion of through-hole processing, the processing of chamfer is accomplished outside the through-hole to the chamfer cutting edge, the burr in the through-hole outside is clear away in the chamfer cutting edge reversal when moving back the sword, combined cutting tool has reduced the switching of cutter in the course of working, the efficiency of processing has been improved greatly, the cycle of processing has been shortened, the input of cutter cost has been reduced, and the quality of processing is guaranteed to the size through combined cutting tool, the off-the-shelf qualification rate is improved.
The utility model discloses further set up to: and a clearance-avoiding interval is arranged between the tapping section and the chamfer section.
Through adopting above-mentioned technical scheme, keep away the sweeps that the interval can avoid the tapping to produce and influence the tapping, make the sweeps that the tapping produced pile up and discharge through the chip groove in keeping away the interval.
The utility model discloses further set up to: the diameter of the drill is D, the drill comprises a core, a chisel edge and a cylindrical edge, the diameter of the core is 27% D, and the width of the cylindrical edge is 10% D.
Through adopting above-mentioned technical scheme, D is the diameter size of work piece drilling, and the cutting output of drilling can be guaranteed to 27% D's core, and the fashioned stability of aperture can be guaranteed to 10% D's cylinder sword width.
The utility model discloses further set up to: a knife back extends from the cylindrical edge to the chip groove, and the width of the knife back is 52% D.
Through adopting above-mentioned technical scheme, guarantee the structural strength of cylinder sword, guarantee aperture fashioned stability.
The utility model discloses further set up to: the major diameter of the drill bit is 90% D.
Through adopting above-mentioned technical scheme, reduce the wearing and tearing of drill bit.
The utility model discloses further set up to: the drill point of the drill bit is between 115 and 125 degrees; the cutter outlet angle of the drill bit is between 90 and 95 degrees; the feed angle of the drill bit is between 20 and 25 degrees.
Through adopting above-mentioned technical scheme, guarantee the intensity of drill bit, the stability of aperture processing and the smoothness nature of chip removal.
The utility model discloses further set up to: the drill point back angle of the drill bit is between 5 and 10 degrees; the front angle of the tooth gap of the drill bit is between 5 and 10 degrees; the tooth clearance angle is between 40 and 45 degrees.
Through adopting above-mentioned technical scheme, the life of extension drill bit cutting.
The utility model discloses further set up to: the helical angle of the chip groove is 15-20 degrees.
Through adopting above-mentioned technical scheme, guarantee the smoothness nature of chip removal.
To sum up, the utility model discloses following effect has:
the combined tool solves the problems that in the prior art, multiple processes can not be achieved, only one tool needs to be clamped once to finish machining, the machining processes of workpiece drilling, tapping and chamfering are achieved through the combined tool, the production efficiency is greatly improved, and a large amount of cost is saved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments or the description of the prior art will be briefly described below.
FIG. 1 is a schematic view of the overall structure of the composite cutter;
FIG. 2 is a front view of the compound cutter;
FIG. 3 is a schematic view of the construction of one end of a composite cutter drill bit;
FIG. 4 is a partial schematic view of a core;
FIG. 5 is a schematic view of a portion of the drill bit;
FIG. 6 is a schematic partial cross-sectional view of a drill bit.
In the figure: 1. a knife handle; 2. a drill bit; 21. drilling a core; 22. a cylindrical blade; 23. a chisel edge; 24. a back of a knife; 25. A tool angle is formed; 26. a tool feed angle; 27. a tooth clearance angle; 28. drilling a tip; 29. a tooth clearance rake angle; 20. a drill tip relief angle; 3. tapping a section; 31. a peripheral edge; 4. a chamfer section; a chamfering blade; 5. a chip flowing groove; 6. and (5) avoiding the empty interval.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, a compound tool for drilling, tapping and chamfering comprises a tool holder and a drill bit arranged at the end of the tool holder, wherein the tool holder is sequentially provided with a tapping section and a chamfering section from one end of the drill bit, the tool holder is also provided with two chip grooves extending from one end of the drill bit to one side of the chamfering section, and the chip grooves extend spirally from one end of the drill bit; the tapping section comprises a peripheral edge for forming threads, and the chamfering section comprises a chamfering edge.
Furthermore, in order to discharge scraps generated by tapping, a clearance interval is arranged between the tapping section and the chamfer section.
In the scheme, the diameter of the drill is D, the diameter of the drill is the same as the aperture of the workpiece to be formed, the drill comprises a core part, a chisel edge and a cylindrical edge, the diameter of the core part is 27% D, and the width of the cylindrical edge is 10% D.
In order to ensure the stability of aperture forming, a knife back extends from the cylindrical edge to the chip groove, and the width of the knife back is 52% D.
Further, the major diameter of the drill bit is 90% D.
Further, the drill point of the drill is 115-125 degrees; the cutter outlet angle of the drill bit is between 90 and 95 degrees; the feed angle of the drill bit is between 20 and 25 degrees.
Furthermore, the drill point back angle of the drill bit is between 5 and 10 degrees; the front angle of the tooth gap of the drill bit is between 5 and 10 degrees; the tooth clearance angle is between 40 and 45 degrees.
In order to improve the smoothness of chip removal in the machining process of the compound cutter, the spiral angle of the chip removal groove is 15-20 degrees.
It should be noted that, for those skilled in the art, without departing from the inventive concept, several variations and modifications can be made, which are within the scope of the present invention.
Claims (6)
1. The compound cutter for drilling, tapping and chamfering comprises a cutter handle and is characterized by comprising a drill bit arranged at the end part of the cutter handle, wherein the cutter handle is sequentially provided with a tapping section and a chamfering section from one end of the drill bit, the cutter handle is also provided with two chip grooves extending from one end of the drill bit to one side of the chamfering section, and the chip grooves extend spirally from one end of the drill bit; the tapping section comprises a peripheral edge for forming threads, and the chamfering section comprises a chamfering edge;
a clearance space is arranged between the tapping section and the chamfer section, and the helix angle of the chip groove is 15-20 degrees.
2. The composite cutter as claimed in claim 1, wherein the drill has a diameter D, the drill includes a core, a chisel edge, and a cylindrical edge, the core has a diameter of 27% D, and the cylindrical edge has a width of 10% D.
3. The composite tool as set forth in claim 2 wherein said cylindrical edge extends to said flute with a land having a width of 52% D.
4. The composite tool as recited in claim 3, wherein the major diameter of the drill bit is 90% D.
5. The composite tool of claim 2, wherein the drill tip of the drill is between 115 ° and 125 °; the cutter outlet angle of the drill bit is between 90 and 95 degrees; the feed angle of the drill bit is between 20 and 25 degrees.
6. The composite cutter of claim 2, wherein the drill bit has a tip relief angle of between 5 ° and 10 °; the front angle of the tooth gap of the drill bit is between 5 and 10 degrees; the tooth clearance angle is between 40 and 45 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021974649.0U CN214079435U (en) | 2020-09-10 | 2020-09-10 | Composite cutter for drilling, tapping and chamfering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021974649.0U CN214079435U (en) | 2020-09-10 | 2020-09-10 | Composite cutter for drilling, tapping and chamfering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214079435U true CN214079435U (en) | 2021-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021974649.0U Active CN214079435U (en) | 2020-09-10 | 2020-09-10 | Composite cutter for drilling, tapping and chamfering |
Country Status (1)
| Country | Link |
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| CN (1) | CN214079435U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114226814A (en) * | 2022-01-18 | 2022-03-25 | 深圳市中天超硬工具股份有限公司 | PCD (polycrystalline Diamond) micro drill bit |
-
2020
- 2020-09-10 CN CN202021974649.0U patent/CN214079435U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114226814A (en) * | 2022-01-18 | 2022-03-25 | 深圳市中天超硬工具股份有限公司 | PCD (polycrystalline Diamond) micro drill bit |
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