CN203316795U - Multi-cutting-edge high-feeding drill bit made of hard alloy - Google Patents
Multi-cutting-edge high-feeding drill bit made of hard alloy Download PDFInfo
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- CN203316795U CN203316795U CN2013203819754U CN201320381975U CN203316795U CN 203316795 U CN203316795 U CN 203316795U CN 2013203819754 U CN2013203819754 U CN 2013203819754U CN 201320381975 U CN201320381975 U CN 201320381975U CN 203316795 U CN203316795 U CN 203316795U
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Abstract
The utility model relates to a multi-cutting-edge high-feeding drill bit made of a hard alloy. The drill bit comprises a drill bit body and a cutting part which is arranged at the front end of the drill bit body, wherein a triangular protuberance is arranged on the top of the cutting part; two centering drill tips used for centering the drill bit are respectively arranged at two sides of the triangular protuberance; two groups of main cutting edges are symmetrically arranged on the cutting parts. Each main cutting edge comprises an outer cutting edge arranged at the outer end, a circular arc edge, a front angle and an inner cutting edge, wherein the circular arc edge is arranged at the inner side of the outer cutting edge; one end of the circular arc edge is connected with the outer cutting edge; the inner cutting edge is connected with the other end of the circular arc edge; an included angle ranging from -5 DEG to -25 DEG is formed by the inner cutting edge and the circular arc edge. A cross edge for enhancing the centering is arranged among the main cutting edges. The drill bit is simple in structure. During a machining process, a circular arc is cut by the circular arc edge and works together with a transiting side of the drill bit to stabilize the cutting operation of the drill bit, so that the swing of the drill bit is limited and the centering is enhanced. Thus, the feeding efficiency and the surface smoothness are improved.
Description
Technical field
The utility model relates to the high feeding drill bit of a kind of carbide alloy multiple-cutting-edge.
Background technology
Existing carbide drill is in the metal boring procedure, and the chip of generation is larger, causes it to take up space larger, and chip removal simultaneously is not smooth.Have that cutting resistance is large, cutting speed waits problem slowly simultaneously.
How to provide a kind of and can divide bits, chip breaking, the chip removal smoothness, cutting speed is the high feeding drill bit of carbide alloy multiple-cutting-edge faster, is the technical barrier that this area will solve.
The utility model content
Technical problem to be solved in the utility model be to provide a kind of simple in structure, can divide bits, chip breaking, chip removal smoothness, the high feeding drill bit of carbide alloy multiple-cutting-edge that cutting speed is fast.
In order to address the above problem, the utility model provides a kind of carbide alloy multiple-cutting-edge high feeding drill bit, comprise: drill body, be located at the cutting portion of drill body front end, the top of described cutting portion is provided with a triangular hill, the both sides of this triangular hill are respectively equipped with a centering apex point that is used to drill bit to feel relieved, and described cutting portion is provided with two groups of main cutting edges of symmetrical setting; Described main cutting edge comprises: be located at outer end the cutting outside, be located at Circular Nose Cutting Edge, the anterior angle that the inboard and end of cutting outside is connected with the cutting outside and be connected with the other end of Circular Nose Cutting Edge and be-5 ° of cutting inner edges to-25 ° of angles with Circular Nose Cutting Edge, be provided with one between described main cutting edge for strengthening the chisel edge of feeling relieved.
Described Circular Nose Cutting Edge is divided into three sections by main cutting edge, makes main cutting edge can divide bits and chip breaking, thereby reduce iron filings, takes up space, and makes the chip removal smoothness.
The effect that the utility model is positive with respect to prior art: the high feeding drill header structure of carbide alloy multiple-cutting-edge of the present utility model is simple, in process, Circular Nose Cutting Edge cuts out annulus one, cutting with steady drill bit together with the icepro limit of drill bit, the restriction drill bit swings, strengthen centering, and then to improve feeding efficiency and surface smoothness; Add man-hour, if the anterior angle of described Circular Nose Cutting Edge each point is increased, be beneficial to and reduce cutting resistance, can improve cutting speed; If the anterior angle of described cutting inner edge is increased, in the time of can making bit bore, axial resistance reduces, and the processing heat of drill bit and the thermal deformation of workpiece are little, and then improves the quality in hole and the service life of drill bit.
The accompanying drawing explanation
Below in conjunction with specific embodiment, the utility model is described in further detail:
Fig. 1 is the structure chart of the high feeding drill bit of carbide alloy multiple-cutting-edge of the present utility model;
Fig. 2 is the top view of Fig. 1.
The specific embodiment
See Fig. 1 to 2, the high feeding drill bit of the carbide alloy multiple-cutting-edge of the present embodiment, comprise: drill body 1, be located at the cutting portion 2 of drill body 1 front end, the top of described cutting portion 2 is provided with a triangular hill 3, the both sides of this triangular hill 3 are respectively equipped with a centering apex point 4 that is used to drill bit to feel relieved, and described cutting portion 2 is provided with two groups of main cutting edges 5 of symmetrical setting; Described main cutting edge 5 comprises: be located at outer end cutting outside 5-1, be located at Circular Nose Cutting Edge 5-3, the anterior angle that the inboard and end of cutting outside 5-1 is connected with cutting outside 5-1 and be connected with the other end of Circular Nose Cutting Edge 5-3 and be-5 ° of cutting inner edge 5-2 to-25 ° of angles with Circular Nose Cutting Edge 5-3, be provided with one between described main cutting edge 5 for strengthening the chisel edge 6 of feeling relieved.
Described Circular Nose Cutting Edge 5-3 is divided into three sections by main cutting edge 5, makes main cutting edge 5 can divide bits and chip breaking, thereby reduce iron filings, takes up space, and makes the chip removal smoothness.
In process, Circular Nose Cutting Edge 5-3 cuts out annulus one, with the cutting of steady drill bit together with the icepro limit of drill bit, limits drill bit and swings, and strengthens centering, and then to improve feeding efficiency and surface smoothness.
Add man-hour, if the anterior angle of described Circular Nose Cutting Edge 5-3 each point is increased, be beneficial to and reduce cutting resistance, can improve cutting speed.
If the anterior angle of described cutting inner edge 5-2 is increased, in the time of can making to hole, axial resistance reduces, and the processing heat of drill bit and the thermal deformation of workpiece are little, and then improves the quality in hole and the service life of drill bit.
Obviously, above-described embodiment is only for the utility model example clearly is described, and is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all embodiments.And these belong to apparent variation that spirit of the present utility model extended out or change still among protection domain of the present utility model.
Claims (1)
1. the high feeding drill bit of carbide alloy multiple-cutting-edge, it is characterized in that comprising: drill body, be located at the cutting portion of drill body front end, the top of described cutting portion is provided with a triangular hill, the both sides of this triangular hill are respectively equipped with a centering apex point that is used to drill bit to feel relieved, and described cutting portion is provided with two groups of main cutting edges of symmetrical setting; Described main cutting edge comprises: be located at outer end the cutting outside, be located at Circular Nose Cutting Edge, the anterior angle that the inboard and end of cutting outside is connected with the cutting outside and be connected with the other end of Circular Nose Cutting Edge and be-5 ° of cutting inner edges to-25 ° of angles with Circular Nose Cutting Edge, be provided with one between described main cutting edge for strengthening the chisel edge of feeling relieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203819754U CN203316795U (en) | 2013-07-01 | 2013-07-01 | Multi-cutting-edge high-feeding drill bit made of hard alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203819754U CN203316795U (en) | 2013-07-01 | 2013-07-01 | Multi-cutting-edge high-feeding drill bit made of hard alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203316795U true CN203316795U (en) | 2013-12-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203819754U Expired - Fee Related CN203316795U (en) | 2013-07-01 | 2013-07-01 | Multi-cutting-edge high-feeding drill bit made of hard alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203316795U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104384577A (en) * | 2014-11-10 | 2015-03-04 | 苏州阿诺精密切削技术股份有限公司 | Multi-operating-condition twist drill bit |
-
2013
- 2013-07-01 CN CN2013203819754U patent/CN203316795U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104384577A (en) * | 2014-11-10 | 2015-03-04 | 苏州阿诺精密切削技术股份有限公司 | Multi-operating-condition twist drill bit |
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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 |
Granted publication date: 20131204 Termination date: 20180701 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |