CN215746899U

CN215746899U - Insert welding thread shank thread milling cutter

Info

Publication number: CN215746899U
Application number: CN202122281326.4U
Authority: CN
Inventors: 侯谊; 侯宇杰; 杨振荣; 马屈
Original assignee: Guizhou Jinfeng Precision Tool Co ltd
Current assignee: Guizhou Jinfeng Precision Tool Co ltd
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2022-02-08
Anticipated expiration: 2031-09-22

Abstract

The utility model discloses a plug-in welding threaded shank 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 circumferential surface of the front end of the milling part, a chip discharge groove is arranged between every two adjacent peripheral cutting edges and extends to the outer sides of the peripheral cutting edges, each peripheral cutting edge is composed of a plurality of cutting teeth which are spirally arranged at equal intervals along the axial direction of the milling part, and a tooth form angle is formed between every two adjacent cutting teeth; a spanner flat is arranged on the circumferential surface of the rear end of the milling part. The thread milling cutter has the advantages of simple structure and good chip removal effect, can improve the processing efficiency of a threaded hole, save the manufacturing time, enhance the stability of the thread milling cutter, improve the milling processing quality and efficiency, meet the requirement of diversified product structures, and is suitable for popularization and application.

Description

Insert welding thread shank thread milling cutter

Technical Field

The utility model relates to the technical field of machine tool cutters in a machining process, in particular to a plug-in welding threaded shank 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 machining efficiency, at present, more and more threads are machined by milling, and the method has the advantages of high machining efficiency, simplified steps, high machining precision and the like, so that greater benefits can be brought to enterprises.

The materials such as stainless steel, high-temperature alloy, high-hardness steel and the like which are difficult to machine have the characteristics of high tensile strength, large cutting resistance and the like, and when the materials are machined, a traditional high-speed milling mode is adopted, so that the phenomena of chip breaking, chip removal and tool sticking are difficult, the abrasion of a tool is accelerated, and the phenomena of substrate cracking, burrs, appearance defects and the like easily occur on the surface of the material. Adopt current cutter structure, when the cutter goes wrong, need whole cutter of whole change, direct influence machining efficiency and progress lead to machining efficiency low, defects such as processingquality finally lead to the part of processing can not satisfy the designing requirement. Therefore, in order to improve the market share of enterprises, diversify the product structure and increase the market competitiveness of enterprises, the cutter is developed to meet the market demand according to the market demand of modern machining.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem in the background technology and provides a thread milling cutter which is simple in structure and convenient to operate.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: a plug-in welding thread shank thread milling cutter comprises a cutter shank, a connecting part and a milling part, wherein external threads are arranged on the cutter shank, the cutter shank and the milling part are connected through the connecting part, a plurality of peripheral cutting edges which are uniformly distributed are arranged on the circumferential surface of the front end of the milling part, a chip removal groove is arranged between every two adjacent peripheral cutting edges and extends to the outer side of each peripheral cutting edge, each peripheral cutting edge is composed of a plurality of cutting teeth which are spirally arranged at equal intervals along the axial direction of the milling part, and a tooth form angle is formed between every two adjacent cutting teeth; a spanner flat is arranged on the circumferential surface of the rear end of the milling part.

Furthermore, the insert welding thread shank thread milling cutter is characterized in that six peripheral cutting edges are arranged, and the six peripheral cutting edges are uniformly distributed on the circumferential surface of the milling part in a right-handed cutting mode along the axial direction of the milling part, wherein the right-handed rotation refers to the turning direction of a chip removal groove of the thread milling cutter, and the right-handed helical angle is 15 degrees; the right cutting means that the rotation direction of the thread milling cutter is clockwise during machining.

Further, according to the insert-welded thread shank thread milling cutter of the present invention, the profile of the peripheral cutting edge is a 10 ° relief angle, the peripheral cutting edge is composed of three cutting teeth, a profile angle formed between two consecutive cutting teeth is 60 ° ± 35', and a crest width of the cutting teeth is 0.09-0.13 mm.

Further, the insert welding threaded shank thread milling cutter according to the present invention, wherein the rake surface and the relief surface of the profile angle are both polished to a roughness of ra0.4.

Furthermore, the insert welding threaded shank thread milling cutter is characterized in that the cutter shank, the connecting part and the milling part are made of high-performance high-speed steel and are integrally formed, the cutter shank is of an M8 x 12 external threaded rod structure, the thread root of the external thread is of a fillet structure, the connecting part is of a cylindrical rod structure with the diameter of 8.5 mm and the length of 5mm, the milling part is 21mm in length and consists of a peripheral cutting edge with the nominal diameter of 20mm at the front end and a cylindrical rod with the diameter of 16mm at the rear end, the peripheral cutting edge is 4.5mm in length, the chip discharge groove is 9mm in length, the wrench is flat and is of a groove structure with the depth of 3mm and the length of 6.5 mm; and a wear-resistant layer is formed on the surface of the milling part in a heat treatment mode.

Furthermore, according to the insert welding threaded shank thread milling cutter, tool withdrawal grooves are formed in the positions of the shank and the connecting portion and the milling portion, and chamfering and arc transition structures are arranged in the tool withdrawal grooves.

Furthermore, according to the insert welding threaded shank thread milling cutter, circular arc transition structures with the radius of 0.4mm are adopted between the cutter shank and the connecting part and between the connecting part and the milling part; an inclined plane structure with an inclination angle of 45 degrees is adopted between the tool shank and the connecting part, and an inclined plane structure with an inclination angle of 15 degrees is adopted between the connecting part and the milling part.

Compared with the prior art, the insert welding thread shank thread milling cutter has the beneficial effects that: because the tool holder, the connecting part and the milling part are made of high-performance high-speed steel and are integrally formed, and the tool holder adopts an M8 external thread rod as a plug-in welding thread handle, the thread handle can be prevented from being broken, the service life of the tool is prolonged, and the material cost of the tool can be reduced by plug-in welding the thread handle; in addition, the peripheral cutting edge in the milling part adopts special relief angle and helix angle sizes, so that the thread milling cutter has good cutting processing performance, good milling processing quality and high milling processing efficiency. The thread milling cutter has the advantages of simple structure and good chip removal effect, can improve the processing efficiency of a threaded hole, save the manufacturing time, enhance the stability of the thread milling cutter, prolong the service life of the thread milling cutter, improve the milling processing quality and efficiency, meet 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 cross-sectional view of the profile angle formed by two adjacent cutting teeth of the present invention;

FIG. 4 is a schematic view of the external thread structure on the shank of the present invention;

FIG. 5 is an enlarged view of a portion of the structure at A in FIG. 1;

fig. 6 is an enlarged view of a portion of the structure at B in fig. 1.

Shown in the figure: 1-handle, 11-external thread, 2-connecting part, 3-milling part, 31-peripheral cutting edge, 32-chip groove, 33-cutting tooth and 34-wrench flat.

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 6, the insert welding threaded shank thread milling cutter of the present invention includes a shank 1, a connecting portion 2 and a milling portion 3, wherein an external thread 11 is provided on the shank 1, the shank 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 provided between two adjacent peripheral cutting edges 31, the chip discharge groove 32 extends to an outer side of the peripheral cutting edge 31, the peripheral cutting edge 31 is formed by a plurality of cutting teeth 33 spirally and equidistantly arranged along an axial direction of the milling portion 3, a tooth form angle is formed between two adjacent cutting teeth 33, a rake surface and a relief surface of the tooth form angle are both polished, and a roughness of the polishing is ra0.4; a wrench flat 34 is arranged on the circumferential surface of the rear end of the milling part 3, and the chip groove 32 extends to the front end close to the wrench flat 34.

Furthermore, the insert welding thread shank thread milling cutter is characterized in that six peripheral cutting edges 31 are arranged, the six peripheral cutting edges 31 are uniformly distributed on the circumferential surface of the milling part 3 in a right-handed cutting mode along the axial direction of the milling part 3, wherein the right-handed cutting refers to the turning direction of a chip groove 32 of the thread milling cutter, and the right-handed helical angle is 15 degrees; the right cutting means that the autorotation direction of the thread milling cutter is clockwise during processing; the profile of the peripheral cutting edge 31 is a 10-degree relief angle, the peripheral cutting edge 31 is composed of three cutting teeth 33, the tooth profile angle formed between two adjacent cutting teeth 33 in sequence is 60 degrees +/-35', and the tooth crest width of each cutting tooth 33 is 0.09-0.13 mm.

Further, the insert welding threaded shank thread milling cutter is characterized in that the cutter shank 1, the connecting part 2 and the milling part 3 are made of high-performance high-speed steel and are integrally formed, tool withdrawal grooves are formed in the positions between the cutter shank 1 and the connecting part 2 and the milling part 3 and are provided with chamfer angles and arc transition structures, and the arc transition structures with the radius of 0.4mm are formed between the cutter shank 1 and the connecting part 2 and between the connecting part 2 and the milling part 3; an inclined plane structure with an inclined angle of 45 degrees is adopted between the tool shank 1 and the connecting part 2, and an inclined plane structure with an inclined angle of 15 degrees is adopted between the connecting part 2 and the milling part 3. The tool holder 1 is of an M8 x 12 external thread rod structure, the thread bottom of the external thread 11 is of a fillet structure, the connecting part 2 is of a cylindrical rod structure with the diameter of 8.5 mm and the length of 5mm, the milling part 3 is 21mm in length and consists of an outer peripheral cutting edge 31 with the nominal diameter of 20mm at the front end and a cylindrical rod with the diameter of 16mm at the rear end, wherein the outer peripheral cutting edge 31 is 4.5mm in length, the chip discharge groove 32 is 9mm in length, and the flat wrench 34 is of a groove structure with the depth of 3mm and the length of 6.5 mm; and a wear-resistant layer is formed on the surface of the milling part 3 through a heat treatment mode.

According to the insert welding threaded shank thread milling cutter, the shank 1, the connecting part 2 and the milling part 3 are made of high-strength steel and integrally formed, tool withdrawal grooves are formed in the positions between the shank 1 and the connecting part 2 and the milling part 3, and chamfer and arc transition structures are arranged in the tool withdrawal grooves; the cutter handle 1 adopts the threaded rod of M8 as a plug-in welding threaded handle, so that the threaded handle can be prevented from being broken, the service life of the cutter is prolonged, and the material cost of the cutter can be reduced by plug-in welding the threaded handle; in addition, the profile of the peripheral cutting edge 31 in the milling part 3 adopts special relief angle and helix angle dimensions, so that the thread milling cutter has good cutting processing performance, good milling processing quality and high efficiency.

In conclusion, the thread milling cutter has the advantages of simple structure, good chip removal effect, longer service life compared with similar products, more than 2 times of the service life of a common cutter, the abrasion loss of the cutting edge of the cutter is only about 1/2 of the similar products under the same service life, and the good cutting edge ensures the processing quality, so that the milling processing quality and efficiency are improved, the processing efficiency of a threaded hole can be improved, the manufacturing time is saved, the stability of the thread milling cutter can be enhanced, the service life of the thread milling cutter is prolonged, the processing stability is good, the requirement of diversified product structures is met, and the thread milling cutter 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

1. The utility model provides a plug welding screw thread handle thread milling cutter which characterized in that: the tooth-shaped milling cutter comprises a cutter handle (1), a connecting part (2) and a milling part (3), wherein an external thread (11) is arranged on the cutter handle (1), the cutter handle (1) and the milling part (3) are connected through the connecting part (2), a plurality of uniformly distributed peripheral cutting edges (31) are arranged on the circumferential surface of the front end of the milling part (3), a chip discharge groove (32) is formed between every two adjacent peripheral cutting edges (31), the chip discharge groove (32) extends to the outer side of each peripheral cutting edge (31), each peripheral cutting edge (31) is composed of a plurality of cutting teeth (33) which are spirally arranged at equal intervals along the axial direction of the milling part (3), and a tooth form angle is formed between every two adjacent cutting teeth (33); a wrench flat (34) is arranged on the rear end circumferential surface of the milling part (3).

2. A plug-weld threaded shank thread milling cutter as claimed in claim 1, wherein: six peripheral cutting edges (31) are arranged, and the six peripheral cutting edges (31) are uniformly distributed on the circumferential surface of the milling part (3) in a right-handed cutting mode along the axial direction of the milling part (3), wherein the right-handed rotation refers to the rotation direction of a chip groove (32) of the thread milling cutter, and the helix angle of the right-handed rotation is 15 degrees; the right cutting means that the rotation direction of the thread milling cutter is clockwise during machining.

3. A plug-weld threaded shank thread milling cutter as claimed in claim 1, wherein: the profile of the peripheral cutting edge (31) is a 10-degree relief angle, the peripheral cutting edge (31) is composed of three cutting teeth (33), a tooth profile angle formed between two adjacent cutting teeth (33) in sequence is 60 degrees +/-35', and the tooth crest width of each cutting tooth (33) is 0.09-0.13 mm; the pitch P of the cutting teeth (33) is 1.5 mm.

4. A plug-weld threaded shank thread milling cutter as claimed in 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 plug-weld threaded shank thread milling cutter as claimed in claim 1, wherein: the tool holder (1), the connecting part (2) and the milling part (3) are made of high-performance high-speed steel and are of an integrally formed structure, wherein the tool holder (1) is of an M8 x 12 external thread rod structure, the thread root of the external thread (11) is of a fillet structure, the connecting part (2) is of a cylindrical rod structure with the diameter of 8.5 mm and the length of 5mm, the milling part (3) is 21mm in length and consists of a peripheral cutting edge (31) with the nominal diameter of 20mm at the front end and a cylindrical rod with the diameter of 16mm at the rear end, the peripheral cutting edge (31) is 4.5mm in length, the chip discharge groove (32) is 9mm in length, the wrench flat (34) is of a groove structure with the depth of 3mm and the length of 6.5 mm; and a wear-resistant layer is formed on the surface of the milling part (3) through a heat treatment mode.

6. A plug-weld threaded shank thread milling cutter as claimed in claim 5, wherein: between handle of a knife (1) and connecting portion (2) to and connecting portion (2) and mill between portion (3) and be connected the department and all be equipped with out-of-the-way groove, and out-of-the-way groove department is equipped with chamfer and circular arc transition structure.

7. A plug-weld threaded shank thread milling cutter as claimed in claim 6, wherein: arc transition structures with the radius of 0.4mm are adopted between the tool handle (1) and the connecting part (2) and between the connecting part (2) and the milling part (3); an inclined plane structure with an inclined angle of 45 degrees is adopted between the tool handle (1) and the connecting part (2), and an inclined plane structure with an inclined angle of 15 degrees is adopted between the connecting part (2) and the milling part (3).