CN215615595U - Thread milling cutter with high and low teeth - Google Patents
Thread milling cutter with high and low teeth Download PDFInfo
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- CN215615595U CN215615595U CN202122329307.4U CN202122329307U CN215615595U CN 215615595 U CN215615595 U CN 215615595U CN 202122329307 U CN202122329307 U CN 202122329307U CN 215615595 U CN215615595 U CN 215615595U
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Abstract
The utility model discloses a high-low thread milling cutter which comprises a cutter handle, a connecting part and a milling part, wherein the cutter handle and the milling part are connected through the connecting part, a plurality of uniformly distributed peripheral cutting edges are arranged on the peripheral surface of the front end of the milling part, a chip removal groove is formed between every two adjacent peripheral cutting edges, each peripheral cutting edge is formed by a plurality of cutting teeth which are spirally arranged at equal intervals along the axial direction of the milling part, a tooth form angle is formed between every two adjacent cutting teeth, and each cutting tooth is composed of a high cutting tooth and a low cutting tooth. The thread milling cutter has the advantages of simple structure and good chip removal effect, can improve the machining efficiency of a threaded hole, save the manufacturing time, effectively prevent the problem of tooth breakage, prolong the service life of the cutter, reduce tool changing, has good machining stability, improves the quality and high efficiency of milling, meets the requirement of diversified product structures, and is suitable for popularization and application.
Description
Technical Field
The utility model relates to the technical field of machine tool cutters in a machining process, in particular to a high-low thread milling cutter.
Background
With the development of science and technology, data processing centers have become irreplaceable tools for various production enterprises, and in the machining process, materials such as stainless steel, high-temperature alloy, high-hardness steel and the like are used in military industry or civil enterprises in a large amount, so that the thread machining requirement is increased continuously. In order to improve the processing efficiency, at present, more and more screw threads are processed by milling, and a milling mode is adopted, so that the method has the advantages of high processing efficiency, simplified steps, high processing precision and the like, and can bring greater benefits to enterprises.
In the machining process, a plurality of precise parts can be involved, and aiming at application places and use environment conditions, the precise parts can adopt metal materials such as stainless steel, high-temperature alloy and high-hardness steel as raw materials. To the numerical control processing of this type of precision parts, especially to the processing of screw hole, adopt current dextrorotation cutter, need constantly change the cutter in the course of working, simultaneously, still need in time clear up the workpiece surface smear metal of treating processing to because of the direction factor of cutting force, still cause the work piece problem of shifting easily, will directly influence machining efficiency and progress like this, lead to machining efficiency low, defects such as processingquality, the part that finally leads to processing can not satisfy the design requirement. Therefore, in order to improve the market share of enterprises, diversify the product structure and increase the market competitiveness of enterprises, the tool is developed to meet the market demand according to the machining demand of precise parts.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems in the background technology and provides a thread milling cutter which is simple in structure and convenient to operate, the thread milling cutter can be used for increasing the tooth form strength of a cutter, effectively preventing tooth breakage, prolonging the service life of the cutter and reducing tool changing, and one thread milling cutter can finish machining of one or more threaded holes, so that the milling machining quality is improved, the milling machining efficiency is high, the requirement of product structure diversification is met, and particularly the thread milling cutter with high and low teeth is provided.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: the utility model provides a high low tooth thread milling cutter, is including handle of a knife, connecting portion and milling portion, the cross-section of connecting portion is the conical surface, be connected through connecting portion between handle of a knife and the milling portion be equipped with many evenly distributed's periphery cutting edge on milling portion's the front end circumference, be equipped with the chip groove between two adjacent periphery cutting edges, the periphery cutting edge is by following milling portion's axial is a plurality of cutting teeth of heliciform equidistance interval arrangement and constitutes, forms the profile of tooth angle between two adjacent cutting teeth, cutting tooth comprises high cutting tooth and low cutting tooth, the addendum height of high cutting tooth is than the addendum height of low cutting tooth 0.3 ~ 0.4mm, the addendum width of low cutting tooth is three to five times the addendum width of high cutting tooth.
Furthermore, the thread milling cutter with high and low teeth is characterized in that four peripheral cutting edges are arranged, and the four peripheral cutting edges are uniformly distributed on the circumferential surface of the milling part in a left-handed cutting mode along the axial direction of the milling part, wherein the left-handed rotation refers to the rotation direction of a chip discharge groove of the thread milling cutter, and the left-handed helical angle is 15 degrees; the left-hand cutting means that the rotation direction of the thread milling cutter is anticlockwise during machining.
Further, the high-low thread milling cutter of the present invention, wherein the profile of the peripheral cutting edge is a relief angle of 10 ° to 12 °, the peripheral cutting edge is formed by two cutting teeth, a profile angle formed between the two cutting teeth is 60 ° ± 15', and a thread pitch P of the cutting teeth is 1.5 mm; wherein the crest width of the high cutting tooth is 0.13 ± 0.02 mm; the tooth crest width of the low cutting teeth is four times of the tooth crest width of the high cutting teeth, the tooth crest height of the high cutting teeth is 0.65mm, and the tooth crest height of the low cutting teeth is 0.98 +/-0.02 mm.
Further, in the high-low thread milling cutter according to the present invention, both the rake surface and the relief surface of the profile angle are polished to have a roughness of ra 0.4.
Further, the thread milling cutter with high and low teeth is characterized in that the cutter handle, the connecting part and the milling part are made of high-strength hard alloy and are integrally formed, the cutter handle is of a cylindrical rod structure with the diameter of 10mm, the taper angle of the conical surface of the connecting part is 35-45 degrees, the length of the milling part is 21mm, the milling part is composed of a peripheral cutting edge with the front end nominal diameter of 8.2 +/-0.01 mm and a cylindrical rod with the rear end diameter of 6.2 +/-0.01 mm, the length of the peripheral cutting edge is 3mm, the length of a groove body of the chip discharge groove is 10mm, and a wear-resistant layer is formed on the surface of the milling part in a coating treatment mode.
Further, the thread milling cutter with the high and low teeth is characterized in that the taper angle of the conical surface of the connecting part is 40 degrees, and the total length of the cutter handle and the connecting part is 50-60 mm; and the surfaces of the cylindrical rods in the tool handle, the connecting part and the milling part are all polished, and the roughness of the polished cylindrical rods is Ra0.8.
Compared with the prior art, the thread milling cutter with high and low teeth has the beneficial effects that: because be equipped with four peripheral cutting edges on the periphery of milling portion, four peripheral cutting edges are followed the axial of milling portion is levogyration left-handed cutting form and evenly arranges, simultaneously, the peripheral cutting edge comprises cutting tooth, and cutting tooth comprises high cutting tooth and low cutting tooth, utilizes high cutting tooth and the low cutting tooth that sets up, and the crest relief grinding circular arc relief angle through high cutting tooth descends the volume, stays the cylinder ligament, and the crest relief grinding through low cutting tooth descends the volume, can realize that a thread milling cutter accomplishes the processing of a plurality of screw holes even to it is good to improve thread milling cutter's cutting processability, makes its milling process's of high quality, efficient. The thread milling cutter has the advantages of simple structure and good chip removal effect, can improve the machining efficiency of a threaded hole, save the manufacturing time, effectively prevent the problem of tooth breakage, prolong the service life of the cutter, reduce tool changing, has good machining stability, improves the quality and high efficiency of milling, meets the requirement of diversified product structures, and is suitable for popularization and application.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic end view of the milling section of FIG. 1;
fig. 3 is an expanded sectional view of a tooth profile formed by two adjacent cutting teeth according to the present invention.
Shown in the figure: 1-handle, 2-connecting part, 3-milling part, 31-peripheral cutting edge, 312-high cutting tooth, 311-low cutting tooth and 32-chip groove.
Detailed Description
To further illustrate the concepts of the present invention, embodiments of the present invention will be described in further detail below with reference to the following drawings:
as shown in fig. 1 to 3, the high-low thread milling cutter according to the present invention includes a cutter holder 1, a connecting portion 2 and a milling portion 3, wherein the connecting portion 2 has a tapered cross-section, the cutter holder 1 and the milling portion 3 are connected by the connecting portion 2, a plurality of peripheral cutting edges 31 are uniformly distributed on a circumferential surface of a front end of the milling portion 3, a chip discharge groove 32 is formed between two adjacent peripheral cutting edges 31, each peripheral cutting edge 31 is formed by a plurality of cutting teeth spirally arranged at equal intervals in an axial direction of the milling portion 3, a 60 ° ± 15' profile angle is formed between two adjacent cutting teeth, a rake angle surface and a relief angle surface of the profile angle are both polished to have a roughness of ra0.4, each cutting tooth is composed of a high cutting tooth 312 and a low cutting tooth 311, a tooth crest height of the high cutting tooth 312 is 0.3 to 0.4mm greater than a tooth crest height of the low cutting tooth 311, the tooth top width of the low cutting tooth 311 is three to five times the tooth top width of the high cutting tooth 312.
Further, the thread milling cutter with high and low teeth, provided by the utility model, is characterized in that four peripheral cutting edges 31 are provided, and the four peripheral cutting edges 31 are uniformly arranged on the circumferential surface of the milling part 3 in a left-handed cutting manner along the axial direction of the milling part 3, wherein the left-handed rotation refers to the rotation direction of the chip discharge grooves 32 of the thread milling cutter, and the helix angle of the left-handed rotation is 15 degrees; the left cutting means that the rotation direction of the thread milling cutter is anticlockwise during processing; the profile of the peripheral cutting edge 31 is a relief angle of 10 degrees to 12 degrees, the peripheral cutting edge 31 is composed of two cutting teeth, and the pitch P of the cutting teeth is 1.5 mm; wherein the crest width of the high cutting teeth 312 is 0.13 ± 0.02 mm; the tooth top width of the low cutting tooth 311 is four times the tooth top width of the high cutting tooth 312, the tooth top height of the high cutting tooth 312 is 0.65mm, and the tooth top height of the low cutting tooth 311 is 0.98 ± 0.02 mm.
Further, the thread milling cutter with high and low teeth is characterized in that the cutter handle 1, the connecting part 2 and the milling part 3 are made of high-strength hard alloy and are integrally formed, wherein the cutter handle 1 is of a cylindrical rod structure with the diameter of 10mm, the taper angle of the conical surface of the connecting part 2 is 40 degrees, the length of the milling part 3 is 21mm, the thread milling cutter consists of a peripheral cutting edge 31 with the nominal diameter of 8.2 +/-0.01 mm at the front end and a cylindrical rod with the diameter of 6.2 +/-0.01 mm at the rear end, the length of the peripheral cutting edge 31 is 3mm, the length of a groove body of the chip discharge groove 32 is 10mm, and a wear-resistant layer is formed on the surface of the milling part 3 in a coating mode; the total length of the tool handle 1 and the connecting part 2 is 50-60 mm; and the surfaces of the cylindrical rods in the tool holder 1, the connecting part 2 and the milling part 3 are all polished, and the roughness of the polished cylindrical rods is Ra0.8.
By adopting the high-low thread milling cutter, as the four peripheral cutting edges 31 are arranged on the circumferential surface of the milling part 3, the four peripheral cutting edges 31 are uniformly arranged in a left-handed cutting mode along the axial direction of the milling part 3, meanwhile, the peripheral cutting edges 31 are composed of cutting teeth which are composed of high cutting teeth 312 and low cutting teeth 311, wherein the tooth crest width of the high cutting teeth 312 is 0.13 +/-0.02 mm; the tooth top width of the low cutting tooth 311 is three to five times of the tooth top width of the high cutting tooth 312, the tooth top height of the high cutting tooth 312 is 0.65mm, the tooth top height of the low cutting tooth 311 is 0.98 +/-0.02 mm, and by utilizing the high cutting tooth 312 and the low cutting tooth 311, the arc relief angle descending amount is relief-ground through the tooth top of the high cutting tooth 312, the cylindrical ligament is remained, and the thread top relief-ground descending amount through the low cutting tooth 311 can realize that one thread milling cutter completes the processing of one or even a plurality of threaded holes, so that the cutting processing performance of the thread milling cutter is improved, and the milling processing quality is good and the milling processing efficiency is high.
In conclusion, the thread milling cutter has the advantages of simple structure and good chip removal effect, can improve the machining efficiency of a threaded hole, save the manufacturing time, effectively prevent the problem of tooth breakage, prolong the service life of the cutter, reduce tool changing, has good machining stability, improves the quality and high efficiency of milling, meets the requirement of diversified product structures, and is suitable for popularization and application.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the utility model.
Claims (6)
1. A thread milling cutter with high and low teeth is characterized in that: comprises a knife handle (1), a connecting part (2) and a milling part (3), wherein the section of the connecting part (2) is a conical surface, the knife handle (1) and the milling part (3) are connected through a connecting part (2), a plurality of peripheral cutting edges (31) which are uniformly distributed are arranged on the circumferential surface of the front end of the milling part (3), a chip removal groove (32) is arranged between every two adjacent peripheral cutting edges (31), the peripheral cutting edge (31) is composed of a plurality of cutting teeth which are spirally arranged at equal intervals along the axial direction of the milling part (3), a tooth form angle is formed between every two adjacent cutting teeth, the cutting teeth consist of high cutting teeth (312) and low cutting teeth (311), the tooth top height of the high cutting teeth (312) is 0.3-0.4 mm larger than that of the low cutting teeth (311), the tooth top width of the low cutting teeth (311) is three to five times the tooth top width of the high cutting teeth (312).
2. A high-low thread milling cutter according to claim 1, wherein: the four peripheral cutting edges (31) are uniformly distributed on the circumferential surface of the milling part (3) in a left-handed cutting mode along the axial direction of the milling part (3), wherein the left-handed rotation is the rotation direction of a chip groove (32) of the thread milling cutter, and the left-handed helical angle is 15 degrees; the left-hand cutting means that the rotation direction of the thread milling cutter is anticlockwise during machining.
3. A high-low thread milling cutter according to claim 1, wherein: the profile of the peripheral cutting edge (31) is a relief angle of 10 degrees to 12 degrees, the peripheral cutting edge (31) is composed of two cutting teeth, a tooth profile angle formed between the two cutting teeth is 60 degrees +/-15', and the thread pitch P of the cutting teeth is 1.5 mm; wherein the crest width of the high cutting teeth (312) is 0.13 ± 0.02 mm; the tooth top width of the low cutting teeth (311) is four times of the tooth top width of the high cutting teeth (312), the tooth top height of the high cutting teeth (312) is 0.65mm, and the tooth top height of the low cutting teeth (311) is 0.98 +/-0.02 mm.
4. A high-low thread milling cutter according to claim 3, wherein: and the front angle surface and the rear angle surface of the tooth form angle are both subjected to polishing treatment, and the roughness of the polishing is Ra0.4.
5. A high-low thread milling cutter according to claim 1, wherein: the tool handle, the connecting part (2) and the milling part (3) are made of high-strength hard alloy and are of an integrally formed structure, wherein the tool handle (1) is of a cylindrical rod structure with the diameter of 10mm, the taper angle of the conical surface of the connecting part (2) is 35-45 degrees, the length of the milling part (3) is 21mm, the milling part consists of an outer peripheral cutting edge (31) with the front end nominal diameter of 8.2 +/-0.01 mm and a cylindrical rod with the rear end diameter of 6.2 +/-0.01 mm, the length of the outer peripheral cutting edge (31) is 3mm, the length of a groove body of the chip removal groove (32) is 10mm, and a wear-resistant layer is formed on the surface of the milling part (3) in a coating treatment mode.
6. A high-low thread milling cutter according to claim 5, wherein: the taper angle of the conical surface of the connecting part (2) is 40 degrees, and the total length of the knife handle (1) and the connecting part (2) is 50-60 mm; the surfaces of the cylindrical rods in the tool handle (1), the connecting part (2) and the milling part (3) are all polished, and the roughness of the polished cylindrical rods is Ra0.8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122329307.4U CN215615595U (en) | 2021-09-26 | 2021-09-26 | Thread milling cutter with high and low teeth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122329307.4U CN215615595U (en) | 2021-09-26 | 2021-09-26 | Thread milling cutter with high and low teeth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215615595U true CN215615595U (en) | 2022-01-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122329307.4U Active CN215615595U (en) | 2021-09-26 | 2021-09-26 | Thread milling cutter with high and low teeth |
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| Country | Link |
|---|---|
| CN (1) | CN215615595U (en) |
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2021
- 2021-09-26 CN CN202122329307.4U patent/CN215615595U/en active Active
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