CN204262456U - A kind of keyway bores milling cutter - Google Patents
A kind of keyway bores milling cutter Download PDFInfo
- Publication number
- CN204262456U CN204262456U CN201420751258.0U CN201420751258U CN204262456U CN 204262456 U CN204262456 U CN 204262456U CN 201420751258 U CN201420751258 U CN 201420751258U CN 204262456 U CN204262456 U CN 204262456U
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- cutting edge
- main cutting
- keyway
- milling cutter
- chip portion
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Abstract
The utility model discloses a kind of keyway and bore milling cutter, comprise handle of a knife and chip portion, chip portion is run through and has twice helical flute, the edge of helical flute is provided with end cutting edge, the first main cutting edge and the second main cutting edge is provided with in the end in chip portion, the cutting edge of described first main cutting edge and the second main cutting edge is arranged on the same straight line by center line, and the first main cutting edge and the second main cutting edge are being provided with breach by paracentral position.Not only structure is simple, working (machining) efficiency is high for the utility model, good processing accuracy, and by disposable for keyway machine-shaping, can reduce processing labour intensity.
Description
Technical field
The utility model relates to a kind of keyway and bores milling cutter, belongs to machining tool technical field.
Background technology
In common machining, the processing technology for keyway is all generally take drill bit first to punch, and then processes by the mode that milling cutter carries out milling, or adopts cotter mill cutter to carry out just boring, and rear milling mode completes.But above-mentioned keyway processing mode to there is working (machining) efficiency all lower, and need twice Set and Positioning, the machining accuracy of keyway is difficult to ensure.Therefore, existing keyway process tool is to processing parts keyway or not ideal enough.
Utility model content
The purpose of this utility model is, provides that a kind of structure is simple, working (machining) efficiency is high, good processing accuracy, and the keyway of disposable for keyway machine-shaping can be bored milling cutter, to overcome prior art deficiency.
The technical solution of the utility model: a kind of keyway bores milling cutter, comprise handle of a knife and chip portion, chip portion is run through and has twice helical flute, the edge of helical flute is provided with end cutting edge, the first main cutting edge and the second main cutting edge is provided with in the end in chip portion, the cutting edge of described first main cutting edge and the second main cutting edge is arranged on the same straight line by center line, and the first main cutting edge and the second main cutting edge are being provided with breach by paracentral position.
The length of the described first main cutting edge is D/2+B, and wherein D is shank diameter, and B is 0.2 ~ 0.3mm.
The size of described breach C is 0.5 ~ 3mm.
The angle α of described end cutting edge and horizontal plane is 28 ° ~ 32 °, and larger angle is not only beneficial to chip removal, and can improve the stock-removing efficiency of end cutting edge.
The utility model has the advantage of: the novel function by drill bit and milling cutter of this use is integrated in one, namely adopt first of end the main cutting edge and the second main cutting edge to hole, utilize the end cutting edge inlet wire keyway milling on the edge of helical flute.Therefore, when adopting the utility model processing keyway, can disposable Set and Positioning be passed through, just can by keyway machine-shaping.And the length of the first main cutting edge is greater than the second main cutting edge in the utility model, in the process that brill milling cutter rotates a circle, portion of material first excises by the second main cutting edge, then the first main cutting edge is again by remaining material removal, therefore this layers of material excision mode not only reduces cutting force, and the temperature produced when reducing cutting, improve stock-removing efficiency, cutter life is extended.In addition, the utility model is being provided with breach at the first main cutting edge and the second main cutting edge by paracentral position, and this breach can, as cutter head heat dissipation channel, prevent tool bit part temperature too high.Therefore, the novel not only structure of this use is simple, working (machining) efficiency is high, good processing accuracy, and by disposable for keyway machine-shaping, can reduce processing labour intensity.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is chip portion end construction enlarged drawing in the utility model.
Description of reference numerals: 1-handle of a knife, 2-helical flute, 3-end cutting edge, the main cutting edge of 4-first, the main cutting edge of 5-second.
Detailed description of the invention
In order to make the utility model object, technical scheme and advantage clearly, below in conjunction with drawings and Examples, the utility model is described in further detail.
Embodiment
See Fig. 1 ~ 3, a kind of keyway of the present utility model bores milling cutter, comprise handle of a knife 1 and chip portion, chip portion is run through and has twice helical flute 2, the edge of helical flute 2 is provided with end cutting edge 3, the first main cutting edge 4 and the second main cutting edge 5 is provided with in the end in chip portion, the cutting edge of described first main cutting edge 4 and the second main cutting edge 5 is arranged on the same straight line by center line, and the first main cutting edge 4 and the second main cutting edge 5 are being provided with breach by paracentral position, and the size of described breach C is 0.5 ~ 3mm.The length of the described first main cutting edge 4 is D/2+B, and wherein D is shank diameter, and B is 0.2 ~ 0.3mm; Described end cutting edge 3 is 28 ° ~ 32 ° with the angle α of horizontal plane.Therefore, the novel function by drill bit and milling cutter of this use is integrated in one, and namely adopts first of end the main cutting edge 4 and the second main cutting edge 5 to hole, utilizes the end cutting edge 3 inlet wire keyway milling on the edge of helical flute 2.Therefore, when adopting the utility model processing keyway, disposable Set and Positioning can be passed through, just can by keyway machine-shaping, and the length of the first main cutting edge 4 is greater than the second main cutting edge in the utility model, in the process that brill milling cutter rotates a circle, second main cutting edge is first by the portion of material excision bottom dowel hole, then the first main cutting edge 4 is again by remaining material removal, therefore this layers of material excision mode not only reduces cutting force, and the temperature produced when reducing cutting, improve stock-removing efficiency, cutter life is extended.
Claims (4)
1. a keyway bores milling cutter, comprise handle of a knife (1) and chip portion, it is characterized in that: run through in chip portion and have twice helical flute (2), the edge of helical flute (2) is provided with end cutting edge (3), the first main cutting edge (4) and the second main cutting edge (5) is provided with in the end in chip portion, the cutting edge of described first main cutting edge (4) and the second main cutting edge (5) is arranged on the same straight line by center line, and the first main cutting edge (4) and the second main cutting edge (5) are being provided with breach by paracentral position.
2. keyway according to claim 1 bores milling cutter, it is characterized in that: the length of the described first main cutting edge (4) is D/2+B, and wherein D is shank diameter, and B is 0.2 ~ 0.3mm.
3. keyway according to claim 1 bores milling cutter, it is characterized in that: the size of described breach C is 0.5 ~ 3mm.
4. keyway according to claim 1 bores milling cutter, it is characterized in that: described end cutting edge (3) is 28 ° ~ 32 ° with the angle α of horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420751258.0U CN204262456U (en) | 2014-12-04 | 2014-12-04 | A kind of keyway bores milling cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420751258.0U CN204262456U (en) | 2014-12-04 | 2014-12-04 | A kind of keyway bores milling cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204262456U true CN204262456U (en) | 2015-04-15 |
Family
ID=52797354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420751258.0U Active CN204262456U (en) | 2014-12-04 | 2014-12-04 | A kind of keyway bores milling cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204262456U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104690354A (en) * | 2014-12-04 | 2015-06-10 | 贵州西南工具(集团)有限公司 | Key slot drill milling cutter |
-
2014
- 2014-12-04 CN CN201420751258.0U patent/CN204262456U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104690354A (en) * | 2014-12-04 | 2015-06-10 | 贵州西南工具(集团)有限公司 | Key slot drill milling cutter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |