CN202045397U - Hard alloy coarse tooth milling cutter - Google Patents
Hard alloy coarse tooth milling cutter Download PDFInfo
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- CN202045397U CN202045397U CN201120025626XU CN201120025626U CN202045397U CN 202045397 U CN202045397 U CN 202045397U CN 201120025626X U CN201120025626X U CN 201120025626XU CN 201120025626 U CN201120025626 U CN 201120025626U CN 202045397 U CN202045397 U CN 202045397U
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- milling cutter
- milling
- screw groove
- hand screw
- cutter
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Abstract
The utility model belongs to the field of milling cutters, and relates to a coarse tooth milling cutter for machining printed circuit boards. The hard alloy coarse tooth milling cutter comprises a cutter holder, wherein one end of the cutter holder extends to form a milling cutter head; the cutter holder and the milling cutter head are in transition connection through a conical face; the periphery of the milling cutter head is distributed with spiral grooves in opposite surrounding directions to form left spiral grooves and right spiral grooves respectively; the left spiral grooves and the right spiral grooves are intersected at the surface of the milling cutter head to form diamond-shaped cutter teeth and a chip removal groove, and one end of the milling cutter head away from the cutter holder forms a milling face; and the spiral angles of the left spiral grooves and the right spiral grooves are 18-22 degrees, and the radial rake angle of the left and the spiral grooves are 4-6 degrees. The milling cutter of the utility model is applicable to machining of plate materials with higher hardness, and has higher comprehensive performance.
Description
Technical field
The utility model belongs to the milling cutter field, is specifically related to a kind of heavy-duty milling cutter that is used for printed wiring board processing.
Background technology
In recent years, continual renovation development along with electronic information field, various electronic products are brought in constant renewal in and are regenerated, and such as LCD TV, commercial mobile phone, digital camera, pocket diary computer etc., more and more present trend highly integrated, diversified, high-intelligentization.The realization of this trend not only relies on the development of electronic devices and components, more depends on the update of printed wiring board.Printed wiring board is divided into two types because of the difference of its application: carry " mother matrix " of semiconductor components and devices and as " support plate " of semiconductor packages.The former manufacturing technology and electric property, reliability and the cost of the complete machine electronic product of being assembled have very big related; The latter's manufacturing technology has very big influence for semi-conductive operation frequency, energy resource consumption, connectivity, reliability and cost.Current, for the requirement of the manufacturing technology of printed wiring board mainly concentrate on densification, high frequencyization, adapt to compound installation, adapt to new function, aspect such as low cost and delivery date are short.Printed wiring board is because its handling characteristics main component is a copper, epoxy resin and glass fabric etc., be and be difficult to material processed, and along with the continuous development of electronics industry is upgraded, there has been growing field to bring into use volume less, the increasing multilayer circuit board of the compound number of plies, thereby in the process of printed wiring board processing cutting, performance parameter to employed cutter requires high, should satisfy the soft metal material machining of copper for example, satisfy again being rich in the cutting of hard non-metallic materials such as glass fibre and resinoid bond, also require the smooth no burr of finished surface, the processing life-span of cutter is long simultaneously, characteristics such as especially chip removal performance is good.Therefore, prepare at it for the milling cutter tool that is applicable to the multilayer printed wiring board milling and all to have proposed high requirement aspect material, the milling parameter, and at the material of the different required milling cutters of preparation, its various performance parameters is otherwise designed thereupon also, in the hope of reaching best milling effect.Milling cutter construction of the prior art and performance have not been suitable for the Milling Process of multilayer printed wiring board.
In addition, increasing novel PCB wiring board appears in the continuous development of electronic applications, sheet material need be fit to higher operating temperature and add some trace elements to change its institutional framework, the hardness of sheet material also increases thereupon, wearing and tearing to cutting tool also can aggravate, and therefore need a kind of new-type cutter that comparatively is suitable at the processing of this kind sheet material.
Chinese patent CN201324867Y discloses a kind of milling cutter, the milling head surface of this milling cutter is provided with two groups around the opposite helical groove formation milling edge of direction, from milling head, clockwise direction is the right-hand screw groove to the handle of a knife extension, counter clockwise direction is the left-hand screw groove to the handle of a knife extension, described right-hand screw groove and described left-hand screw groove are 25 ° along the projection of milling cutter diameter direction and the angle in milling cutter axle center, and described milling cutter is last chip removal structure.This milling cutter is special in the custom-designed milling cutter of the characteristic of FR-4 plate and halogen-free sheet material.This milling cutter adopts general Hardmetal materials preparation, and its milling intensity is difficult to guarantee, is not suitable for the milling of the higher pcb board of sheet material hardness; This milling cutter is owing to adopt 25 ° of bigger helical angles, because helical angle is bigger, under the certain situation of the milling head diameter of milling cutter, the chip removal performance of milling cutter can not get guaranteeing, because the chip removal performance can not get guaranteeing, influence the heat dispersion of this milling cutter, thereby made this milling cutter can not be applicable to the environment of high speed feed, influenced working (machining) efficiency; In addition, this milling cutter does not reasonably design all rake angles, thereby can not guarantee that milling cutter has sharpness preferably.
Summary of the invention
For this reason, technical problem to be solved in the utility model is, overcomes the defective that milling cutter of the prior art is not suitable for the bigger sheet material of workhardness, thereby a kind of milling cutter that is applicable to the sheet material processing that hardness is bigger is provided.
Another technical problem to be solved in the utility model is, the chip resistance that overcomes the big milling cutter of milling cutter ' s helix angle degree of the prior art can guaranteed defective, thereby provides a kind of chip removal performance preferably and be applicable to the milling cutter of high speed feed environment.
Another technical problem to be solved in the utility model is, overcome in the prior art not all rake angles to milling cutter and carry out appropriate design thereby can not guarantee the sharpness of integral body of milling cutter and the defective of cutting hardness, thereby a kind of milling cutter of sharpness and cutting hardness preferably that has is provided.
For solving the problems of the technologies described above a kind of heavy-duty milling cutter that is used to process multilayer printed wiring board described in the utility model.A kind of carbide alloy heavy-duty milling cutter, comprise handle of a knife, one end of described handle of a knife extends into milling head, described handle of a knife is connected by a conical surface transition with described milling head, be distributed with around direction opposite left-hand screw groove and right-hand screw groove around the described milling head, described left-hand screw groove and described right-hand screw groove intersect formation rhombus cutter tooth and chip area on the surface of described milling head, and at the end formation milling face of described milling head away from described handle of a knife, the helical angle of described left-hand screw groove and described right-hand screw groove is 18 °-22 °, and all rake angles are 4 °-6 °.
A kind of heavy-duty milling cutter that is used to process multilayer printed wiring board described in the utility model, the helical angle of described left-hand screw groove and described right-hand screw groove is 20 °.
A kind of heavy-duty milling cutter that is used to process multilayer printed wiring board described in the utility model, all rake angles of described left-hand screw groove and described right-hand screw groove are 5 °.
A kind of heavy-duty milling cutter that is used to process multilayer printed wiring board described in the utility model, the end tooth anterior angle of the end tooth on the described milling face is 0-5 °.
A kind of heavy-duty milling cutter that is used to process multilayer printed wiring board described in the utility model, described left-hand screw groove and described right-hand screw groove are respectively 6.
A kind of heavy-duty milling cutter that is used to process multilayer printed wiring board described in the utility model, the tooth depth 10 of described rhombus cutter tooth is the 10%-15% of diameter.
A kind of heavy-duty milling cutter that is used to process multilayer printed wiring board described in the utility model, described milling face is D type, S type or F type.
A kind of heavy-duty milling cutter that is used to process multilayer printed wiring board described in the utility model, the diameter of the milling head of described milling cutter is 0.8-3.175mm.
The advantage that technique scheme of the present utility model has compared to existing technology is:
1. milling cutter of the present utility model, described left-hand screw groove and described right-hand screw groove intersect on the surface of described milling cutter head arranges formation rhombus cutter tooth and chip area, and form a plurality of end teeth away from an end of described handle of a knife at described milling cutter head, the helical angle of described left-hand screw groove and described right-hand screw groove is 18 °-22 °, being preferably 20 ° of all rake angles is 4 °-6 °, is preferably 5 °.Less helical angle design makes this milling cutter form the bastard structure on the one hand, reduced the possibility that cutter tooth breaks in the milling process, can be used for the bigger sheet material of cutting hardness, less on the other hand helical angle has guaranteed that this milling cutter has chip removal performance preferably, makes that heat dispersion accessed assurance when this milling cutter was used in the high speed feed environment; All rake angles of this milling cutter are designed to 4 °-6 ° simultaneously, are preferably 5 °, when guaranteeing that milling cutter has higher sharpness, do not damage the cutting hardness of milling cutter.Therefore, milling cutter of the present utility model has higher combination property.
2. heavy-duty milling cutter of the present utility model, described left-hand screw groove and described right-hand screw groove are respectively 6, when this makes that with design this milling cutter has more suitable cutting edge participation cutting, have guaranteed chip space and milling intensity.
Description of drawings
For the easier quilt of content of the present utility model is clearly understood, according to specific embodiment of the utility model also in conjunction with the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is the structural representation of milling cutter described in the utility model;
Fig. 2 is the enlarged drawing at the E place of Fig. 1;
Fig. 3 is the partial sectional view along the A-A direction of Fig. 1;
Fig. 4 is the partial sectional view along the C-C direction of Fig. 1;
Fig. 5 is the partial sectional view along the B-B direction rotation of Fig. 1;
Fig. 6 is that enlarged drawing is looked on the left side at E place among Fig. 1;
Fig. 7-the 1st, the schematic diagram of D type milling face;
Fig. 7-the 2nd, the schematic diagram of F type milling face;
Fig. 7-the 3rd, the schematic diagram of S type milling face.
Reference numeral is expressed as among the figure: 1-handle of a knife, 2-milling cutter head, 3-cutting face, 4-left-hand screw groove, 5-right-hand screw groove, 7-end tooth anterior angle, 8-milling face, 9-week rake angle, 10-tooth depth, 11-end tooth gap, 12-helical angle.
The specific embodiment
The carbide alloy heavy-duty milling cutter that is used to process printed wiring board of the present utility model comprises handle of a knife 1, and an end of described handle of a knife 1 extends into milling head 2, and the diameter of described milling cutter head 2 is 0.8mm; Described handle of a knife 1 is connected by the conical surface 5 transition with described milling head 2, and at this, the described conical surface 5 is 30 ° with the cone angle that is connected of described milling head 2; Be distributed with around the described milling head 2 clockwise direction around right-hand screw groove 4 and counterclockwise around left-hand screw groove 3(see Fig. 1), at this, described left-hand screw groove 3 and described right-hand screw groove 4 are 6, described left-hand screw groove 3 and described right-hand screw groove 4 intersect on the surface of described milling head 2 arranges formation rhombus cutter tooth and chip area, and at the end formation milling face 8 of described milling head 2 away from described handle of a knife 1, the tooth depth 10(of described rhombus cutter tooth sees Fig. 4 and Fig. 5) be 10% of diameter, described end tooth anterior angle 7(sees Fig. 3) be 5 °, described end tooth gap 11(sees Fig. 6) be 0.01mm, described milling face 8 is selected D type (seeing Fig. 7-1), be to form apex point type end tooth on the described milling face 8, be used for the inside groove of milling wiring board, comparatively accurate drilling ability is arranged; The helical angle 12 of described left-hand screw groove 3 and described right-hand screw groove 4 is 20 ° of (see figure 2)s, and all rake angle 9(see Fig. 4 and Fig. 5) be 5 °.A kind of heavy-duty milling cutter that is used to process printed wiring board described in the utility model adopts ultra-fine granularity hardness HRA 〉=93.2, bending strength TRS 〉=3900N/mm
2, the carbide alloy bar of grain size≤0.4 μ m is a substrate preparation.
The carbide alloy heavy-duty milling cutter that is used to process printed wiring board of the present utility model comprises handle of a knife 1, and an end of described handle of a knife 1 extends into milling head 2, and the diameter of described milling head 2 is 2mm; Described handle of a knife 1 is connected by the conical surface 5 transition with described milling head 2, and at this, the described conical surface 5 is 30 ° with the cone angle that is connected of described milling head 2; Be distributed with around the described milling head 2 clockwise direction around right-hand screw groove 4 and counterclockwise around left-hand screw groove 3, at this, described left-hand screw groove 3 and described right-hand screw groove 4 are 6, described left-hand screw groove 3 and described right-hand screw groove 4 intersect on the surface of described milling head 2 arranges formation rhombus cutter tooth and chip area, and at the end formation milling face 8 of described milling head 2 away from described handle of a knife 1, the tooth depth 10 of described rhombus cutter tooth is 15% of a diameter, described end tooth anterior angle 7 is 2 °, described end tooth gap 11(sees Fig. 6) be 0.01mm, described milling face 8 is selected S type (seeing Fig. 7-3), be not have end tooth on the described milling face 8, no drilling ability; The helical angle 12 of described left-hand screw groove 3 and described right-hand screw groove 4 is 18 °, and all rake angles 9 are 4 °.A kind of heavy-duty milling cutter that is used to process printed wiring board described in the utility model adopts ultra-fine granularity hardness HRA 〉=93.2, bending strength TRS 〉=3900N/mm
2, the carbide alloy bar of grain size≤0.4 μ m is a substrate preparation.
Embodiment 3
The carbide alloy heavy-duty milling cutter that is used to process printed wiring board of the present utility model comprises handle of a knife 1, and an end of described handle of a knife 1 extends into milling head 2, and the diameter of described milling head 2 is 3.175mm; Described handle of a knife 1 is connected by the conical surface 5 transition with described milling head 2, and at this, the described conical surface 5 is 30 ° with the cone angle that is connected of described milling head 2; Be distributed with around the described milling head 2 clockwise direction around right-hand screw groove 4 and counterclockwise around left-hand screw groove 3, at this, described left-hand screw groove 3 and described right-hand screw groove 4 are 6, described left-hand screw groove 3 and described right-hand screw groove 4 intersect on the surface of described milling head 2 arranges formation rhombus cutter tooth and chip area, and form milling face 8(at described milling head 2 away from an end of described handle of a knife 1 and see Fig. 1), the tooth depth 10 of described rhombus cutter tooth is 12% of a diameter, described end tooth anterior angle 7 is 4 °, described end tooth gap 11(sees Fig. 6) be 0.01mm, described milling face 8 is selected F type (seeing Fig. 7-2), it is the end tooth that forms fishtail on the described milling face 8, can be used to milling chip area and profile thereof, the drilling ability is arranged; The helical angle 12 of described left-hand screw groove 3 and described right-hand screw groove 4 is 22 °, and all rake angles are 9 to be 6 °.A kind of heavy-duty milling cutter that is used to process printed wiring board described in the utility model adopts ultra-fine granularity hardness HRA 〉=93.2, bending strength TRS 〉=3900N/mm
2, the carbide alloy bar of grain size≤0.4 μ m is a substrate preparation.
Obviously, the foregoing description only is for example clearly is described, and is not the qualification to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being extended out thus or change still are among the protection domain of the utility model creation.
Claims (8)
1. carbide alloy heavy-duty milling cutter that is used to process printed wiring board, comprise handle of a knife (1), one end of described handle of a knife (1) extends into milling head (2), described handle of a knife (1) is connected by a conical surface (5) transition with described milling head (2), be distributed with around direction opposite left-hand screw groove (3) and right-hand screw groove (4) around the described milling head (2), described left-hand screw groove (3) and described right-hand screw groove (4) intersect formation rhombus cutter tooth and chip area on the surface of described milling head (2), and at the end formation milling face (8) of described milling head (2) away from described handle of a knife (1), it is characterized in that: the helical angle (12) of described left-hand screw groove (3) and described right-hand screw groove (4) is 18 °-22 °, and all rake angles (9) are 4 °-6 °.
2. the carbide alloy heavy-duty milling cutter that is used to process printed wiring board according to claim 1 is characterized in that: the helical angle (12) of described left-hand screw groove (3) and described right-hand screw groove (4) is 20 °.
3. the carbide alloy heavy-duty milling cutter that is used to process printed wiring board according to claim 2 is characterized in that: all rake angles 9 of described left-hand screw groove (3) and described right-hand screw groove (4) are 5 °.
4. carbide alloy heavy-duty milling cutter according to claim 1 is characterized in that: the end tooth anterior angle (7) of the end tooth on the described milling face (8) is 0-5 °.
5. according to each described carbide alloy heavy-duty milling cutter that is used to process printed wiring board among the claim 1-4, it is characterized in that: described left-hand screw groove (3) and described right-hand screw groove (4) are respectively 6.
6. according to each described carbide alloy heavy-duty milling cutter that is used to process printed wiring board among the claim 1-4, it is characterized in that: the tooth depth 10 of described rhombus cutter tooth is the 10%-15% of diameter.
7. according to each described carbide alloy heavy-duty milling cutter that is used to process printed wiring board among the claim 1-4, it is characterized in that: described milling face (8) is D type, S type or F type.
8. according to each described carbide alloy heavy-duty milling cutter that is used to process printed wiring board among the claim 1-4, it is characterized in that: the diameter of the milling head of described milling cutter (2) is 0.8-3.175mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120025626XU CN202045397U (en) | 2011-01-26 | 2011-01-26 | Hard alloy coarse tooth milling cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120025626XU CN202045397U (en) | 2011-01-26 | 2011-01-26 | Hard alloy coarse tooth milling cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202045397U true CN202045397U (en) | 2011-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120025626XU Expired - Fee Related CN202045397U (en) | 2011-01-26 | 2011-01-26 | Hard alloy coarse tooth milling cutter |
Country Status (1)
| Country | Link |
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| CN (1) | CN202045397U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104191019A (en) * | 2014-08-01 | 2014-12-10 | 常州创伟工具制造有限公司 | Double-helix two-edge end mill |
| CN110587006A (en) * | 2019-09-27 | 2019-12-20 | 广东鼎泰高科精工科技有限公司 | Diamond-shaped right-handed left-handed PCB milling cutter and machining method thereof |
-
2011
- 2011-01-26 CN CN201120025626XU patent/CN202045397U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104191019A (en) * | 2014-08-01 | 2014-12-10 | 常州创伟工具制造有限公司 | Double-helix two-edge end mill |
| CN110587006A (en) * | 2019-09-27 | 2019-12-20 | 广东鼎泰高科精工科技有限公司 | Diamond-shaped right-handed left-handed PCB milling cutter and machining method thereof |
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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: 20111123 Termination date: 20180126 |