CN204262379U - A kind of inside spin boring cutter - Google Patents
A kind of inside spin boring cutter Download PDFInfo
- Publication number
- CN204262379U CN204262379U CN201420427426.0U CN201420427426U CN204262379U CN 204262379 U CN204262379 U CN 204262379U CN 201420427426 U CN201420427426 U CN 201420427426U CN 204262379 U CN204262379 U CN 204262379U
- Authority
- CN
- China
- Prior art keywords
- cutter head
- knife bar
- cutting edge
- inside spin
- chamfering
- 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
Links
- 230000004323 axial length Effects 0.000 claims description 4
- 238000003754 machining Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
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- Drilling Tools (AREA)
Abstract
The utility model discloses a kind of inside spin boring cutter, the cutter head comprising knife bar and be connected with knife bar, described knife bar and cutter head one-body molded, it is trapezoidal step that described cutter head rear end is provided with the axial cross section be connected with knife bar, the upper end of described cutter head is mutually neat with the upper end of knife bar, the front portion of described cutter head arranges half rounded transitional inclined-plane, and described cutter head front lower portion arranges cutting portion, and the top of described cutter head front end is provided with chamfering.The utility model structure is simple, and applied widely, for the internal thread of processing work, working (machining) efficiency is high, good stability.Intermediate incline is conducive to chip removal, accelerates cutting speed, improves the quality of finished surface.The chamfering that the front end of cutter head is arranged utilizes cutter head entrance and tool setting.
Description
Technical field
The utility model relates to a kind of boring cutter, particularly relates to a kind of inside spin boring cutter.
Background technology
In machining, cutter is the indispensable critical piece of machine tooling, and the quality of cutter quality has influence on the service life of self, also has influence on quality and the production efficiency of machining.Although the special hole boring cutter of lathe is also a lot, have special auxiliary body, its complicated structure, manufacture efficiency low, stability is not good.
Summary of the invention
The utility model, in order to overcome the deficiency of above-mentioned technical problem, provides a kind of inside spin boring cutter, can solve the problems of the technologies described above completely.
The technical scheme solved the problems of the technologies described above is as follows:
A kind of inside spin boring cutter, the cutter head comprising knife bar and be connected with knife bar, described knife bar and cutter head one-body molded, it is trapezoidal step that described cutter head rear end is provided with the axial cross section be connected with knife bar, the upper end of described cutter head is mutually neat with the upper end of knife bar, the front portion of described cutter head arranges half rounded transitional inclined-plane, and described cutter head front lower portion arranges cutting portion, and the top of described cutter head front end is provided with chamfering.
Described cutting portion comprises the first cutting edge, the second cutting edge and the 3rd cutting edge, the angle of the first described cutting edge and the vertical line of axis is 27 °, the angle of the 3rd described cutting edge and the vertical line of axis is 7 °, and the second described cutting edge is parallel with knife bar.
The length of the second described cutting edge is 0.43mm.
The lower end of the 3rd described cutting edge is 1.55mm to the vertical height of cutter head end.
The base of described intermediate incline is 7mm to the axial length of cutter head front end.
The second described cutting edge is 6mm to cutter head upper end vertical range.
The lower end of described chamfering is 5.67mm to the vertical range of the second cutting edge.
The utility model structure is simple, and applied widely, for the internal thread of processing work, working (machining) efficiency is high, good stability.Intermediate incline is conducive to chip removal, accelerates cutting speed, improves the quality of finished surface.The chamfering that the front end of cutter head is arranged utilizes cutter head entrance and tool setting.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model;
In figure: 1 is knife bar, 2 is cutter head, 3 is step, 4 is intermediate incline, 5 is cutting portion, 6 is the angle of the vertical line of the first cutting edge and axis for chamfering c1, c2 is the angle of the vertical line of the 3rd cutting edge and axis, c3 is the length of the second cutting edge, c4 is the vertical height of lower end to cutter head end of the 3rd cutting edge, c5 is the axial length of base to cutter head front end of intermediate incline, c6 be the second cutting edge to cutter head upper end vertical range, c7 is the vertical range of lower end to the second cutting edge of chamfering.
Detailed description of the invention
A kind of inside spin boring cutter as shown in Figure 1, the cutter head 2 comprising knife bar 1 and be connected with knife bar 1, described knife bar 1 and cutter head 2 one-body molded, it is trapezoidal step 3 that described cutter head 2 rear end is provided with the axial cross section be connected with knife bar 1, the upper end of described cutter head 2 is mutually neat with the upper end of knife bar 1, the front portion of described cutter head arranges half rounded transitional inclined-plane 4, and described cutter head 2 front lower portion arranges cutting portion 5, and the top of described cutter head 2 front end is provided with chamfering 6.Described cutting portion 5 comprises the first cutting edge, the second cutting edge and the 3rd cutting edge, the angle c1 of the first described cutting edge and the vertical line of axis is 27 °, the angle c2 of the 3rd described cutting edge and the vertical line of axis is 7 °, and the second described cutting edge is parallel with knife bar 1.The length c3 of the second described cutting edge is 0.43mm.The lower end of the 3rd described cutting edge is 1.55mm to the vertical height c4 of cutter head 2 end.The base of described intermediate incline 4 is 7mm to the axial length c5 of cutter head 2 front end.The second described cutting edge is 6mm to cutter head 2 upper end vertical range c6.The lower end of described chamfering 6 is 5.67mm to the vertical range c7 of the second cutting edge.Described tool bit diameter is 3.8mm, and the length of cutter head is 22mm, and knife bar diameter is 8mm, and the overall length of whole boring cutter is 60mm.
Claims (6)
1. an inside spin boring cutter, the cutter head comprising knife bar and be connected with knife bar, described knife bar and cutter head one-body molded, it is characterized in that, it is trapezoidal step that described cutter head rear end is provided with the axial cross section be connected with knife bar, the upper end of described cutter head is mutually neat with the upper end of knife bar, the front portion of described cutter head arranges half rounded transitional inclined-plane, described cutter head front lower portion arranges cutting portion, the top of described cutter head front end is provided with chamfering, described cutting portion comprises the first cutting edge, second cutting edge and the 3rd cutting edge, the angle of the first described cutting edge and the vertical line of axis is 27 °, the angle of the 3rd described cutting edge and the vertical line of axis is 7 °, the second described cutting edge is parallel with knife bar.
2. a kind of inside spin boring cutter according to claim 1, is characterized in that, the length of the second described cutting edge is 0.43mm.
3. a kind of inside spin boring cutter according to claim 1, is characterized in that, the lower end of the 3rd described cutting edge is 1.55mm to the vertical height of cutter head end.
4. a kind of inside spin boring cutter according to claim 1, is characterized in that, the base of described intermediate incline is 7mm to the axial length of cutter head front end.
5. a kind of inside spin boring cutter according to claim 1, is characterized in that, the second described cutting edge is 6mm to cutter head upper end vertical range.
6. a kind of inside spin boring cutter according to claim 1, is characterized in that, the lower end of described chamfering is 5.67mm to the vertical range of the second cutting edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420427426.0U CN204262379U (en) | 2014-07-30 | 2014-07-30 | A kind of inside spin boring cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420427426.0U CN204262379U (en) | 2014-07-30 | 2014-07-30 | A kind of inside spin boring cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204262379U true CN204262379U (en) | 2015-04-15 |
Family
ID=52797278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420427426.0U Expired - Fee Related CN204262379U (en) | 2014-07-30 | 2014-07-30 | A kind of inside spin boring cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204262379U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105312598A (en) * | 2014-07-30 | 2016-02-10 | 常州创伟工具制造有限公司 | Internal spiral boring cutter |
-
2014
- 2014-07-30 CN CN201420427426.0U patent/CN204262379U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105312598A (en) * | 2014-07-30 | 2016-02-10 | 常州创伟工具制造有限公司 | Internal spiral boring 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20180730 |