CN202045398U - Hard alloy spiral milling cutter - Google Patents
Hard alloy spiral milling cutter Download PDFInfo
- Publication number
- CN202045398U CN202045398U CN2011200276780U CN201120027678U CN202045398U CN 202045398 U CN202045398 U CN 202045398U CN 2011200276780 U CN2011200276780 U CN 2011200276780U CN 201120027678 U CN201120027678 U CN 201120027678U CN 202045398 U CN202045398 U CN 202045398U
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- milling
- cutter
- milling cutter
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Abstract
The utility model belongs to the field of a milling cutter and particularly relates to a spiral milling cutter used for multilayer circuit board processing. The milling cutter comprises a cutter handle, wherein the cutter handle extends into a milling head, the cutter handle and the milling head realizes the transition through a cone surface, and a milling surface is formed at the tail end of the milling cutter head. The milling cutter is characterized in that three groups of spiral grooves with the same pitch are arranged on the surface of the milling head, a chip milling cutting edge is respectively formed at the side walls of the spiral grooves, and the spiral angles of the spiral grooves are 28 to 32 degrees. The spiral milling cutter ensures that both the milling strength and the chip discharge performance are at a higher level.
Description
Technical field
The utility model belongs to the milling cutter field, is specifically related to a kind of screw-on 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.Because the main component of its handling characteristics printed wiring board 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.
Chinese patent CN201380316Y discloses a kind of right-hand screw milling cutter, this milling cutter comprises handle of a knife, one end of handle of a knife extends into milling head, the surface of described milling head is provided with six roads and forms milling edge from milling head, clockwise direction to the right-hand screw groove that handle of a knife extends, the end of milling head is provided with the cutting face of two V mouths, and described right-hand screw groove is 25 ° along the projection of milling cutter diameter direction and the angle in milling cutter axle center.The described right-hand screw groove of this milling cutter is 25 ° along the projection of milling cutter diameter direction and the angle in milling cutter axle center, its spiral angle is corresponding less, in milling process, can produce a component that makes progress on the milling face of sheet material, when smear metal is upwards discharged, the tendency that sheet material is lifted is arranged.Especially the machining area of surface flatness can destroy to(for) thin sheet material or small wiring board can be torn sheet material when serious, so this milling cutter construction and be not suitable for the Milling Process of the more multilayer printed wiring board of less, the compound number of plies of volume; In addition, the spiral angle of this milling cutter is less, makes chip space less, and then has influenced the heat dispersion of milling cutter, thereby makes this milling cutter not be suitable for the processing of small wiring board.
The utility model content
Technical problem to be solved in the utility model is: overcoming in the prior art milling cutter, not to be suitable for heat dispersion bad, is not suitable for the defective of small circuit board processing, and then a kind of milling cutter that is suitable for small circuit board processing is provided.
For this reason, the utility model provides a kind of screw-on cutter that is used to process multilayer printed wiring board, comprise handle of a knife, described handle of a knife extends into a milling head, logical conical surface transition between described handle of a knife and the described milling head, described milling head end forms milling face, and the surface distributed of described milling head has three groups of helical grooves that pitch is identical, the sidewall of described helical groove forms and mills the bits sword, and the helical angle of wherein said helical groove is 28 °～32 °.
The screw-on cutter that is used to process multilayer printed wiring board that the utility model provides, all rake angles of described milling cutter are 5 °～7 °.
The screw-on cutter that is used to process multilayer printed wiring board that the utility model provides, the helical angle of described helical groove are preferably 30 °.
The utility model is provided for processing the screw-on cutter of multilayer printed wiring board, and all rake angles of described milling cutter are preferably 6 °.
The screw-on cutter that is used to process multilayer printed wiring board that the utility model provides, described helical groove are right-hand screw.
The screw-on cutter that is used to process multilayer printed wiring board that the utility model provides, described cutting face are F shape.
The screw-on cutter that is used to process multilayer printed wiring board that the utility model provides, described cutting face are S shape.
The screw-on cutter that is used to process multilayer printed wiring board that the utility model provides, described helical groove tooth depth are the 15%-20% of diameter.
The utility model provides is used to process the milling cutter that printed wiring board uses and has the following advantages:
1. the surface distributed that the utility model provides is used to process the milling head of the milling cutter that printed wiring board uses has three groups of helical grooves that pitch is identical, and described helical groove forms and mills the bits sword, and the helical angle of wherein said helical groove is 28 °～32 °.Owing to have three helical grooves, not only guaranteed the quantity of cutting sword of participation cutting but also increased chip space; Owing to adopt 28 °～32 ° helical angle, make in the milling process less along the component of described milling cutter axial direction, avoided when smear metal is upwards discharged, the danger of sheet material being lifted even damages the sheet material outer surface is arranged, when guaranteeing the milling sharpness appropriate design corresponding chip removal space, make the chip after the milling be easy to discharge, thermal diffusivity is better, is suitable for the processing of small circuit board.
2. the screw-on cutter that is used to process multilayer printed wiring board that the utility model provides, all rake angles of described milling cutter are 5 °～7 °, can guarantee the crown milling intensity in cutting face, improve the intensity and the performance of milling.
3. the screw-on cutter that is used to process multilayer printed wiring board that the utility model provides, the helical angle of described helical groove is preferably 30 °, has guaranteed that this milling cutter is best in the combination property of milling intensity and chip removal performance.
4. the utility model is provided for processing the screw-on cutter of multilayer printed wiring board, and all rake angles of described milling cutter are preferably 6 °, has guaranteed to reduce when milling cutter has best milling sharpness to resolve the tooth odds.
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
Milling cutter schematic diagram when Fig. 1 is 28 ° for the helical angle of milling cutter of the present utility model;
Milling cutter schematic diagram when Fig. 2 is 30 ° for the helical angle of milling cutter of the present utility model;
Milling cutter schematic diagram when Fig. 3 is 32 ° for the helical angle of milling cutter of the present utility model;
Fig. 4 is the schematic diagram of helical angle of the present utility model;
Fig. 5 is the schematic diagram of all rake angles of the present utility model and tooth depth;
Fig. 6-1 is the schematic diagram of F type milling face of the present utility model;
Fig. 6-2 is the schematic diagram of S type milling face of the present utility model.
Reference numeral is expressed as among the figure: 1-handle of a knife, 2-milling head, 3-milling face, 4-helical groove, 5-milling edge, 6-helical angle, 7-week rake angle, the 8-conical surface, 10-tooth depth.
The specific embodiment
The screw-on cutter that is used to process multilayer printed wiring board described in the utility model, comprise handle of a knife 1, described handle of a knife 1 extends into a milling head 2, pass through the conical surface 8 transition between described handle of a knife 1 and the described milling head 2, the angle of the described conical surface 8 is 30 °, described milling head 2 ends form milling face 3, at this, described milling face 3 is selected S shape, be not have end tooth on the described milling face 3, no drilling ability, certainly, also described milling face can be designed to F shape according to different milling needs, the i.e. end tooth that on described milling face 3, forms crow's feet shape, can be used to milling chip area and profile thereof, drilling ability (seeing Fig. 6-1) is arranged, the surface distributed of described milling head 2 has three groups of helical grooves 4 that pitch is identical, at this, helical groove is the right-hand screw groove, forms the chip removal structure when adopting the right-hand screw groove, certain difference according to the chip removal direction, thereby also the spiral fluted direction can be designed to left-hand screw and form chip removal structure down, the sidewall of described helical groove 4 forms and mills bits sword 5, and the helical angle 6(of described helical groove 4 sees Fig. 4) be 30 ° of (see figure 1)s, all rake angle 7(of described right-hand screw groove 4 see Fig. 5) be 5 °, tooth depth 10(sees Fig. 5) be 18% of diameter.
The screw-on cutter that is used to process multilayer printed wiring board described in the utility model, comprise handle of a knife 1, described handle of a knife 1 extends into a milling head 2, pass through the conical surface 8 transition between described handle of a knife 1 and the described milling head 2, the angle of the described conical surface 8 is that 30 ° of described milling head 2 ends form milling face 3, at this, described milling face 3 is selected S shape, certainly, also described cutting face can be designed to F shape according to different milling needs, the surface distributed of described milling head 2 has three groups of helical grooves 4 that pitch is identical, at this, helical groove is the right-hand screw groove, forms the chip removal structure when adopting the right-hand screw groove, certain difference according to the chip removal direction, thereby also the spiral fluted direction can be designed to left-hand screw and form chip removal structure down, the sidewall of described helical groove 4 forms and mills bits sword 5, and the helical angle 6 of described helical groove 4 is 28 ° of (see figure 2)s, all rake angles 7 of described right-hand screw groove 4 are 6 °, and tooth depth 10 is 15%-20% of diameter.
The screw-on cutter that is used to process multilayer printed wiring board described in the utility model, comprise handle of a knife 1, described handle of a knife 1 extends into a milling head 2, pass through the conical surface 8 transition between described handle of a knife 1 and the described milling head 2, the angle of the described conical surface 8 is that 30 ° of described milling cutter head 2 ends form milling face 3, at this, described milling face 3 is selected S shape (seeing Fig. 6-2), certainly, also described cutting face can be designed to F shape (seeing Fig. 6-1) according to different milling needs, the surface distributed of described milling head 2 has three groups of helical grooves 4 that pitch is identical, at this, helical groove is the right-hand screw groove, forms the chip removal structure when adopting the right-hand screw groove, certain difference according to the chip removal direction, thereby also the spiral fluted direction can be designed to left-hand screw and form chip removal structure down, the sidewall of described helical groove 4 forms and mills bits sword 5, and the helical angle 6 of described helical groove 4 is 32 ° of (see figure 3)s, all rake angles 7 of described right-hand screw groove 4 are 7 °, and tooth depth 10 is 20% of diameters.
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 (9)
1. carbide alloy screw-on cutter, comprise handle of a knife (1), described handle of a knife (1) extends into a milling head (2), pass through the conical surface (8) transition between described handle of a knife (1) and the described milling head (2), described milling head (2) end forms milling face (3), it is characterized in that: the surface distributed of described milling head (2) has three groups of helical grooves (4) that pitch is identical, the sidewall of described helical groove (4) forms and mills bits sword (5), and the helical angle (6) of described helical groove (4) is 28 °～32 °.
2. carbide alloy screw-on cutter according to claim 1 is characterized in that: all rake angles (7) of described milling cutter are 5 °～7 °.
3. carbide alloy screw-on cutter according to claim 1 and 2 is characterized in that: the helical angle (6) of described helical groove (4) is 30 °.
4. carbide alloy screw-on cutter according to claim 2 is characterized in that: all rake angles (7) of described milling cutter are 6 °.
5. according to claim 1,2 or 4 described carbide alloy screw-on cutters, it is characterized in that: described helical groove (4) is a right-hand screw.
6. carbide alloy screw-on cutter according to claim 3 is characterized in that: described helical groove (4) is a right-hand screw.
7. carbide alloy screw-on cutter according to claim 1 and 2 is characterized in that: described milling face (3) is a F shape.
8. carbide alloy screw-on cutter according to claim 1 and 2 is characterized in that: described milling face (3) is a S shape.
9. carbide alloy screw-on cutter according to claim 1 and 2 is characterized in that: described helical groove (4) tooth depth (10) is the 15%-20% of diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200276780U CN202045398U (en) | 2011-01-27 | 2011-01-27 | Hard alloy spiral milling cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200276780U CN202045398U (en) | 2011-01-27 | 2011-01-27 | Hard alloy spiral milling cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202045398U true CN202045398U (en) | 2011-11-23 |
Family
ID=44985722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200276780U Expired - Fee Related CN202045398U (en) | 2011-01-27 | 2011-01-27 | Hard alloy spiral milling cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202045398U (en) |
-
2011
- 2011-01-27 CN CN2011200276780U patent/CN202045398U/en not_active Expired - Fee Related
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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: 20111123 Termination date: 20180127 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |