CN203610735U - Solid carbide stepped combination drill - Google Patents
Solid carbide stepped combination drill Download PDFInfo
- Publication number
- CN203610735U CN203610735U CN201320641741.9U CN201320641741U CN203610735U CN 203610735 U CN203610735 U CN 203610735U CN 201320641741 U CN201320641741 U CN 201320641741U CN 203610735 U CN203610735 U CN 203610735U
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- CN
- China
- Prior art keywords
- cutting portion
- cutting part
- conical surface
- cutting
- cutter body
- 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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Abstract
The utility model belongs to the field of cutting tools, in particular to an integrated solid carbide stepped combination drill, which comprises a tool body, the front section of the tool body is provided with a first cutting part, a second cutting part and a third cutting part, the front section of the tool body is provided with a spiral chip groove which runs through the first cutting part, the second cutting part and the third cutting part, the rear section of the tool body is provided with a shank for connection with a power device, the front end of the first cutting part is provided with a conical centering cutting part, the joint between the first cutting part and the second cutting part is provided with a first stepped conical cutting part, the joint between the second cutting part and the third cutting part is provided with a second stepped conical cutting part, the included angle between the conical cutting edge of the first stepped conical cutting part and the central axis of the tool body is 60 degrees, and the included angle between the conical cutting edge of the second stepped conical cutting part and the central axis of the tool body is 45 degrees. The solid carbide stepped combination drill can progressively machine the same bore, the tool does not need to be replaced, the precision of machining is ensured, and the machining time is saved.
Description
Technical field
The utility model belongs to cutting tool field, particularly a kind of integrated molding, Integral alloy ladder composite drill that cutter hub intensity is high.
Background technology
The split type structure of the general employing of ladder composite drill, be that each ladder section is processed respectively, then weld combination, the integral rigidity of the cutter of such welding combination is inadequate, and welding position easily lost efficacy under the impact of continuous cutting resistance, caused the service life of cutter shorter.
Utility model content
The utility model is for the deficiencies in the prior art, the utility model can complete grading processing to same hole, on the one hand without changing cutter, guarantee the precision of processing and saved process time, reduce on the other hand the cutting output of every one-level processing, reduce the cutting resistance of every one-level cutting edge, extended the service life of cutter.
The utility model is achieved through the following technical solutions:
Integral alloy ladder composite drill, it comprises along the cutter body of central axis rotation, it is characterized in that: the leading portion of described cutter body is provided with the first cutting portion, the second cutting portion and the 3rd cutting portion, on the leading portion of cutter body, be provided with and run through the first cutting portion, the helical flute of the second cutting portion and the 3rd cutting portion, the back segment of cutter body is provided with the handle of a knife being connected with power set, the front end of the first described cutting portion is provided with conical surface centering cutting portion, the first cutting portion and the second cutting portion junction are provided with first step conical surface cutting portion, the second cutting portion and the 3rd cutting portion junction are provided with second step conical surface cutting portion, the described conical surface cutting edge of first step conical surface cutting portion and the angle of cutter body axis are 60 °, the conical surface cutting edge of second step conical surface cutting portion and the angle of cutter body axis are 45 °.
The helical angle of described chip area is 32 °.
The conical surface angle of described conical surface centering cutting portion is 120 °.
In sum, the utlity model has beneficial effect:
The first cutting portion, the second cutting portion and the 3rd cutting portion of the utility model setting can complete grading processing to same hole, on the one hand without changing cutter, guarantee the precision of processing and saved process time, reduce on the other hand the cutting output of every one-level processing, reduce the cutting resistance of every one-level cutting edge, 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 the first cutting portion, and 3 is first step conical surface cutting portion, and 4 is the second cutting portion, and 5 is second step conical surface cutting portion, and 6 is the 3rd cutting portion, and 7 is chip area, and 8 is handle of a knife.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
Integral alloy ladder composite drill as shown in Figure 1, it comprises along the cutter body of central axis rotation, it is characterized in that: the leading portion of described cutter body is provided with the first cutting portion 2, the second cutting portion 4 and the 3rd cutting portion 6, on the leading portion of cutter body, be provided with and run through the first cutting portion 2, the helical flute 7 of the second cutting portion 4 and the 3rd cutting portion 6, the back segment of cutter body is provided with the handle of a knife 8 being connected with power set, the front end of the first described cutting portion 2 is provided with conical surface centering cutting portion 1, the first cutting portion 2 and the second cutting portion 4 junctions are provided with first step conical surface cutting portion 3, the second cutting portion 4 and the 3rd cutting portion 6 junctions are provided with second step conical surface cutting portion 5, the described conical surface cutting edge of first step conical surface cutting portion 3 and the angle of cutter body axis are 60 °, the conical surface cutting edge of second step conical surface cutting portion 5 and the angle of cutter body axis are 45 °.
The helical angle of described chip area 7 is 32 °.
The conical surface angle of described conical surface centering cutting portion 1 is 120 °.
In sum, the utlity model has beneficial effect:
The first cutting portion, the second cutting portion and the 3rd cutting portion of the utility model setting can complete grading processing to same hole, on the one hand without changing cutter, guarantee the precision of processing and saved process time, reduce on the other hand the cutting output of every one-level processing, reduce the cutting resistance of every one-level cutting edge, 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 (3)
1. Integral alloy ladder composite drill, it comprises along the cutter body of central axis rotation, it is characterized in that: the leading portion of described cutter body is provided with the first cutting portion, the second cutting portion and the 3rd cutting portion, on the leading portion of cutter body, be provided with and run through the first cutting portion, the helical flute of the second cutting portion and the 3rd cutting portion, the back segment of cutter body is provided with the handle of a knife being connected with power set, the front end of the first described cutting portion is provided with conical surface centering cutting portion, the first cutting portion and the second cutting portion junction are provided with first step conical surface cutting portion, the second cutting portion and the 3rd cutting portion junction are provided with second step conical surface cutting portion, the described conical surface cutting edge of first step conical surface cutting portion and the angle of cutter body axis are 60 °, the conical surface cutting edge of second step conical surface cutting portion and the angle of cutter body axis are 45 °.
2. Integral alloy ladder composite drill according to claim 1, is characterized in that: the helical angle of described chip area is 32 °.
3. Integral alloy ladder composite drill according to claim 1, is characterized in that: the conical surface angle of described conical surface centering cutting portion is 120 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320641741.9U CN203610735U (en) | 2013-10-17 | 2013-10-17 | Solid carbide stepped combination drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320641741.9U CN203610735U (en) | 2013-10-17 | 2013-10-17 | Solid carbide stepped combination drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203610735U true CN203610735U (en) | 2014-05-28 |
Family
ID=50763416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320641741.9U Expired - Fee Related CN203610735U (en) | 2013-10-17 | 2013-10-17 | Solid carbide stepped combination drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203610735U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104190968A (en) * | 2014-08-01 | 2014-12-10 | 常州创伟工具制造有限公司 | Levorotation single-edged cutter |
-
2013
- 2013-10-17 CN CN201320641741.9U patent/CN203610735U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104190968A (en) * | 2014-08-01 | 2014-12-10 | 常州创伟工具制造有限公司 | Levorotation single-edged cutter |
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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 |