CN205110904U - Rotary cutting tool - Google Patents
Rotary cutting tool Download PDFInfo
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- CN205110904U CN205110904U CN201520921465.0U CN201520921465U CN205110904U CN 205110904 U CN205110904 U CN 205110904U CN 201520921465 U CN201520921465 U CN 201520921465U CN 205110904 U CN205110904 U CN 205110904U
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- helicla flute
- cutting tool
- rotary cutting
- cutting portion
- spiral fluted
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Abstract
The utility model is suitable for a cutting tool technical field discloses a rotary cutting tool, including cutting portion, the front end of cutting portion has milling cutter point portion, cutting portion is provided with first helicla flute and second helicla flute, revolving to being dextrorotation or being the levogyration of first helicla flute, second helicla flute, first helicla flute is provided with a plurality ofly and each first helicla flute is followed the circumference equipartition of cutting portion, the second helicla flute is provided with one just certainly the front end of cutting portion is to other end screw set. The utility model provides a rotary cutting tool, it can avoid milling polyimide lamination board flange discontinuity, and to break the layering bad, and flange outward appearance quality is good, and rotary cutting tool's cutting ability is good.
Description
Technical field
The utility model belongs to cutting tool technical field, particularly relates to a kind of rotary cutting tool.
Background technology
Making rapid progress of microelectric technique, electronic product is fast-developing towards thin light short and smallization, polyimide resin (polyimide is called for short PI) laminate is owing to possessing the insulated electro performance etc. of more than excellent mechanical property, heat endurance, decay resistance and C level, and it is widely applied in microelectric technique.But in the mechanical Milling Processes of polyimide laminate, the cutting ability of rotary cutting tool is not good enough, milling edges of boards surface easily occurs that discontinuity is broken layering, easily causes edge appearance quality bad.
Utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, provides a kind of rotary cutting tool, and its cutting ability is good, and circuit board can be avoided during processing circuit board to occur, and discontinuity is broken the phenomenon of layering, and edge appearance quality is good.
The technical solution of the utility model is: a kind of rotary cutting tool, comprise cutting portion, the front end of described cutting portion has milling cutter tip, and described cutting portion is provided with the first helicla flute and the second helicla flute, and described first helicla flute, the second spiral fluted rotation direction are dextrorotation or are left-handed; It is uniform along the circumference of described cutting portion that described first helicla flute is provided with multiple and each described first helicla flute, and described second helicla flute is provided with one and arranges to other end spiral from the front end of described cutting portion.
Alternatively, described first spiral fluted helical angle is 6 ° to 14 °; Described second spiral fluted helical angle is 81 ° to 89 °.
Alternatively, described first helicla flute is provided with 7.
Alternatively, described second spiral fluted groove width is less than described first spiral fluted groove width.
Alternatively, described second spiral fluted groove depth is less than described first spiral fluted groove depth.
Alternatively, the described second spiral fluted cutting edge facewidth is greater than the second spiral fluted groove width.
Alternatively, the drift angle of described milling cutter tip 136 ° to 144 °, the blade tip width of described milling cutter tip is less than 0.5 times of cutting portion diameter.
Alternatively, the both sides of described milling cutter tip are furnished with side edge, and the corner cut of described side edge is 16 ° to 24 °, and the side edge corner cut space of lines of both sides intersects.
Alternatively, the cutting-in of described side edge is less than 2 times of cutting portion diameter.
Alternatively, the surface of described cutting portion is provided with rigid composite coating.
Rotary cutting tool provided by the utility model, described in it, the first helicla flute, the second spiral fluted rotation direction are dextrorotation and arrange; It is uniform along the circumference of described cutting portion that described first helicla flute is provided with multiple and each described first helicla flute, described second helicla flute is provided with one and arranges to other end spiral from the front end of described cutting portion, avoid the layering of breaking of milling polyimide laminate edges of boards discontinuity bad, edge appearance quality is good, and the cutting ability of rotary cutting tool is good.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic perspective view of the rotary cutting tool that the utility model embodiment provides;
Fig. 2 is the floor map of the rotary cutting tool that the utility model embodiment provides;
Fig. 3 is the floor map of the rotary cutting tool that the utility model embodiment provides;
Fig. 4 is the floor map of the rotary cutting tool that the utility model embodiment provides;
Fig. 5 is the schematic perspective view of the rotary cutting tool that the utility model embodiment provides;
Fig. 6 is the schematic perspective view of the rotary cutting tool that the utility model embodiment provides;
Fig. 7 (a) is floor map when having 3 the first spiral fluted rotary cutting tool processing circuit boards;
Fig. 7 (b) is floor map when having 5 the first spiral fluted rotary cutting tool processing circuit boards;
Fig. 7 (c) is floor map when having 7 the first spiral fluted rotary cutting tool processing circuit boards.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
It should be noted that, when element is called as " being fixed on " or " being arranged at " another element, it can directly on another element or may there is centering elements simultaneously.When an element is known as " being connected to " another element, it can be directly connected to another element or may there is centering elements simultaneously.
Also it should be noted that, the orientation term such as left and right, upper and lower in the utility model embodiment, is only relative concept or be reference with the normal operating condition of product each other, and should not be regarded as have restrictive.
As shown in Figures 1 to 6, a kind of rotary cutting tool that the utility model embodiment provides, comprise cutting portion 10, the front end of described cutting portion 10 has milling cutter tip 11, the rear end of cutting portion 10 can be welded with or one-body moldedly have shank section 20, shank section 20 can adopt the alloys such as stainless steel to make, and its cost is low.Described cutting portion 10 is provided with the first helicla flute 101 and the second helicla flute 102, and the rotation direction of described first helicla flute 101, second helicla flute 102 is identical, and in the present embodiment, the first helicla flute 101, second helicla flute 102 is dextrorotation and arranges or be left-handed setting, it is uniform along the circumference of described cutting portion 10 that described first helicla flute 101 is provided with multiple and each described first helicla flute 101, described second helicla flute 102 is provided with one and arranges to other end spiral from the front end of described cutting portion 10, the rotary cutting tool that the present embodiment provides, it is mainly used in printed circuit board edges of boards Milling Process field, because most milling machine adopts upwards dust suction, therefore the first helicla flute 101, second helicla flute 102 adopts dextrorotation to arrange and upwards chip removal, avoid the layering of breaking of milling polyimide laminate edges of boards discontinuity bad, the cutting ability of rotary cutting tool is good, edge appearance quality is good.
In embody rule, in order to improve the service life of rotary cutting tool, the surface of cutting portion 10 can be provided with rigid composite coating, to extend the service life of instrument.
In embody rule, the helical angle a of described first helicla flute 101 can be 6 ° to 14 °; The helical angle b of described second helicla flute 102 can be 81 ° to 89 °.
Preferably, the helical angle a of the first helicla flute 101 can be 8 ° to 12 °, such as 10 °.
Preferably, the helical angle b of the second helicla flute 102 can be 83 ° to 87 °, such as 85 °.
Particularly, described first helicla flute 101 is provided with 7, and 7 the first helicla flutes 101 are uniform along the circumference of described cutting portion 10.
Particularly, the groove width of described second helicla flute 102 is greater than 0 and is less than the groove width of described first helicla flute 101.
Particularly, the groove depth of described second helicla flute 102 is greater than 0 and is less than the groove depth of described first helicla flute 101.
Particularly, the cutting edge facewidth w2 of described second helicla flute 102 is greater than the groove width w1 of the second helicla flute 102.
Particularly, the drift angle of described milling cutter tip 11 136 ° to 144 °, the blade tip width w2 of described milling cutter tip 11 is less than 0.5 times of cutting portion 10 diameter.
Preferably, the drift angle e of milling cutter tip 11 can be 138 ° to 142 °, such as 140 °.By reducing anterior angle angle, make cutting sharp.
Particularly, the both sides of described milling cutter tip 11 are furnished with side edge 111, and the corner cut c of described side edge is 16 ° to 24 °, and the side edge corner cut space of lines of both sides intersects, and namely the side edge corner cut line of both sides is at spatial intersecting.
Particularly, the cutting-in h1 of described side edge is less than 2 times of cutting portion 10 diameter.
In concrete test, if Fig. 7 (a) is to as shown in Fig. 7 (c), in order to determine groove number and the spiral angle of best described first helicla flute 101, devise 3,5,7 the first helicla flutes 101 respectively, and helical angle also correspondence be designed to 10 °, 20 °, 30 ° respectively, described second helicla flute 102 also correspondence devises left-handed and dextrorotation two kinds, helical angle correspondence is designed to 65 °, 75 °, 85 ° respectively, arranged by above-mentioned parameter, carry out the test of cutting circuit board 3, carry out judge design from edges of boards quality and milling life-span good and bad.Result of the test shows: the first helicla flute 101 groove number is 7, and helical angle is 10 °, and the second helicla flute 102 is dextrorotation, helical angle is 85 °, milling polyimide laminate edges of boards do not have discontinuity layering of breaking bad, and after adopting rigid composite coating, service life can effectively extend.
The rotary cutting tool that the utility model embodiment provides, described in it, the rotation direction of the first helicla flute 101, second helicla flute 102 is identical, and in the present embodiment, the first helicla flute 101, second helicla flute 102 is dextrorotation and arranges, it is uniform along the circumference of described cutting portion 10 that described first helicla flute 101 is provided with multiple and each described first helicla flute 101, described second helicla flute 102 is provided with one and arranges to other end spiral from the front end of described cutting portion 10, can be applicable to printed circuit board edges of boards Milling Process field, because most milling machine adopts upwards dust suction, therefore the first helicla flute 101, second helicla flute 102 adopts dextrorotation to arrange and upwards chip removal, avoid the layering of breaking of milling polyimide laminate edges of boards discontinuity bad, the cutting ability of rotary cutting tool is good, edge appearance quality is good.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace or improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a rotary cutting tool, comprise cutting portion, the front end of described cutting portion has milling cutter tip, it is characterized in that, described cutting portion is provided with the first helicla flute and the second helicla flute, and described first helicla flute, the second spiral fluted rotation direction are dextrorotation or are left-handed; It is uniform along the circumference of described cutting portion that described first helicla flute is provided with multiple and each described first helicla flute, and described second helicla flute is provided with one and arranges to other end spiral from the front end of described cutting portion.
2. rotary cutting tool as claimed in claim 1, it is characterized in that, described first spiral fluted helical angle is 6 ° to 14 °; Described second spiral fluted helical angle is 81 ° to 89 °.
3. rotary cutting tool as claimed in claim 1, it is characterized in that, described first helicla flute is provided with 7.
4. rotary cutting tool as claimed in claim 1, it is characterized in that, described second spiral fluted groove width is less than described first spiral fluted groove width.
5. the rotary cutting tool according to any one of Claims 1-4, is characterized in that, described second spiral fluted groove depth is less than described first spiral fluted groove depth.
6. the rotary cutting tool according to any one of Claims 1-4, is characterized in that, the described second spiral fluted cutting edge facewidth is greater than the second spiral fluted groove width.
7. the rotary cutting tool according to any one of Claims 1-4, is characterized in that, the drift angle of described milling cutter tip 136 ° to 144 °, and the blade tip width of described milling cutter tip is less than 0.5 times of cutting portion diameter.
8. the rotary cutting tool according to any one of Claims 1-4, is characterized in that, the both sides of described milling cutter tip are furnished with side edge, and the corner cut of described side edge is 16 ° to 24 °, and the side edge corner cut space of lines of both sides intersects.
9. rotary cutting tool as claimed in claim 8, it is characterized in that, the cutting-in of described side edge is less than 2 times of cutting portion diameter.
10. the rotary cutting tool according to any one of Claims 1-4, is characterized in that, the surface of described cutting portion is provided with rigid composite coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520921465.0U CN205110904U (en) | 2015-11-18 | 2015-11-18 | Rotary cutting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520921465.0U CN205110904U (en) | 2015-11-18 | 2015-11-18 | Rotary cutting tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205110904U true CN205110904U (en) | 2016-03-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520921465.0U Active CN205110904U (en) | 2015-11-18 | 2015-11-18 | Rotary cutting tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205110904U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105234468A (en) * | 2015-11-18 | 2016-01-13 | 深圳市金洲精工科技股份有限公司 | Revolving cutting tool |
-
2015
- 2015-11-18 CN CN201520921465.0U patent/CN205110904U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105234468A (en) * | 2015-11-18 | 2016-01-13 | 深圳市金洲精工科技股份有限公司 | Revolving cutting tool |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |