CN203610734U - Solid carbide double-headed center drill - Google Patents
Solid carbide double-headed center drill Download PDFInfo
- Publication number
- CN203610734U CN203610734U CN201320641566.3U CN201320641566U CN203610734U CN 203610734 U CN203610734 U CN 203610734U CN 201320641566 U CN201320641566 U CN 201320641566U CN 203610734 U CN203610734 U CN 203610734U
- Authority
- CN
- China
- Prior art keywords
- center drill
- cutting portion
- centre drill
- conical surface
- solid carbide
- 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.)
- Expired - Fee Related
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- Drilling Tools (AREA)
Abstract
The utility model belongs to the field of cutting tools, in particular to an integrally machined solid carbide double-headed center drill. The solid carbide double-headed center drill comprises a tool body which can rotate around the central axis. The solid carbide double-headed center drill is characterized in that both ends of the tool body are provided with center drill cutting parts, a shank part is arranged between the center drill cutting parts, each center drill cutting part comprises a conical centering cutting part and a cylindrical cutting part, and V-shaped chip grooves on the center drill cutting parts are extended onto the shank part. The solid carbide double-headed center drill can be used twice, so that the use cost of the tool is effectively reduced, meanwhile, because the solid carbide double-headed center drill is formed in one step, the rigidity of the tool is effectively increased, and the service life of the tool is prolonged.
Description
Technical field
The utility model belongs to cutting tool field, particularly a kind of Integral alloy double end centre drill of overall machine-shaping.
Background technology
Centre drill is for machining center locating hole, not high to the required precision of cutter, but existing centre drill only has one end to have cutting edge, when just carrying out tool changing after the cutting edge wearing and tearing of one end, has caused like this use cost of centre drill too high.
Utility model content
The utility model is for the deficiencies in the prior art, and the utility model has designed a kind of double end centre drill, can carry out twice use, effectively reduce the use cost of cutter, the utility model adopts one-shot forming simultaneously, has effectively improved cutter rigidity, has extended the service life of cutter.
The utility model is achieved through the following technical solutions:
Integral alloy double end centre drill, it comprises the cutter body rotating around axis, it is characterized in that: the two ends of described cutter body are provided with centre drill cutting portion, between centre drill cutting portion, be provided with handle of a knife portion, described centre drill cutting portion comprises conical surface centering cutting portion and cylindric cutting portion, V-type chip area on described centre drill cutting portion, chip area extension is set in handle of a knife portion.
The conical surface angle of further, described conical surface centering cutting portion is 120 °.
Further, between described centre drill cutting portion and handle of a knife portion, be provided with the transition conical surface, the conical surface angle of the described transition conical surface is 60 °.
The length of further, described cylindric cutting portion is 3mm.
In sum, the utlity model has beneficial effect:
The two ends of cutter body of the present utility model are provided with centre drill cutting portion, improved the utilization rate of cutter body, reduced the manufacturing cost of cutter, the utility model adopts one machine-shaping simultaneously, effectively improve the rigidity of cutter, extended the service life of cutter.
Accompanying drawing explanation
By the detailed description below in conjunction with accompanying drawing, the utility model is aforesaid will be become apparent with other object, feature and advantage.Wherein:
Figure 1 shows that structural representation of the present utility model;
In figure, 1 is conical surface centering cutting portion, and 2 is cylindric cutting portion, and 3 is the transition conical surface, and 4 is chip area, and 5 is handle of a knife portion, and 6 is cutter body.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
Integral alloy double end centre drill as shown in Figure 1, it comprises the cutter body 6 rotating around axis, it is characterized in that: the two ends of described cutter body 6 are provided with centre drill cutting portion, between centre drill cutting portion, be provided with handle of a knife portion 5, described centre drill cutting portion comprises conical surface centering cutting portion 1 and cylindric cutting portion 2, V-type chip area 4 on described centre drill cutting portion, chip area 4 extensions are set in handle of a knife portion.
The conical surface angle of further, described conical surface centering cutting portion 1 is 120 °.
Further, between described centre drill cutting portion and handle of a knife portion, be provided with the transition conical surface 3, the conical surface angle of the described transition conical surface 3 is 60 °.
The length of further, described cylindric cutting portion 2 is 3mm.
In sum, the utlity model has beneficial effect:
The two ends of cutter body of the present utility model are provided with centre drill cutting portion, improved the utilization rate of cutter body, reduced the manufacturing cost of cutter, the utility model adopts one machine-shaping simultaneously, effectively improve the rigidity of cutter, extended the service life of cutter.
The utility model is not limited to described embodiment; those skilled in the art is not departing from spirit of the present utility model openly in scope; still can do some corrections or change, therefore the scope that rights protection scope of the present utility model limits with claims is as the criterion.
Claims (4)
1. Integral alloy double end centre drill, it comprises the cutter body rotating around axis, it is characterized in that: the two ends of described cutter body are provided with centre drill cutting portion, between centre drill cutting portion, be provided with handle of a knife portion, described centre drill cutting portion comprises conical surface centering cutting portion and cylindric cutting portion, V-type chip area on described centre drill cutting portion, chip area extension is set in handle of a knife portion.
2. Integral alloy double end centre drill according to claim 1, is characterized in that: the conical surface angle of described conical surface centering cutting portion is 120 °.
3. Integral alloy double end centre drill according to claim 1, is characterized in that: between described centre drill cutting portion and handle of a knife portion, be provided with the transition conical surface, the conical surface angle of the described transition conical surface is 60 °.
4. Integral alloy double end centre drill according to claim 1, is characterized in that: the length of described cylindric cutting portion is 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320641566.3U CN203610734U (en) | 2013-10-17 | 2013-10-17 | Solid carbide double-headed center drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320641566.3U CN203610734U (en) | 2013-10-17 | 2013-10-17 | Solid carbide double-headed center drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203610734U true CN203610734U (en) | 2014-05-28 |
Family
ID=50763415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320641566.3U Expired - Fee Related CN203610734U (en) | 2013-10-17 | 2013-10-17 | Solid carbide double-headed center drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203610734U (en) |
-
2013
- 2013-10-17 CN CN201320641566.3U patent/CN203610734U/en not_active Expired - Fee Related
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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: 20140528 Termination date: 20141017 |
|
| EXPY | Termination of patent right or utility model |