CN213410680U

CN213410680U - Vertically-mounted thread turning blade

Info

Publication number: CN213410680U
Application number: CN202022323048.XU
Authority: CN
Inventors: 李府
Original assignee: Sichuan Daoqin Cutting Tools Co ltd
Current assignee: Sichuan Daoqin Cutting Tools Co ltd
Priority date: 2020-10-19
Filing date: 2020-10-19
Publication date: 2021-06-11
Anticipated expiration: 2030-10-19

Abstract

The utility model discloses a formula threading lathe blade of adorning immediately relates to thread machining blade field. The vertical thread turning insert is convenient to machine at a cutting part and guarantee precision. A vertically-mounted threading machine blade comprises a blade main body, wherein the blade main body is provided with a mounting hole and at least two cutting parts, and the cutting parts are uniformly distributed on the circumference by taking the mounting hole as the center; the outer contour surfaces of the cutting parts are positioned on the same revolution surface, the axis of the revolution surface is the central line of the mounting hole, and the generatrix of the revolution surface is matched with the thread form; the cutting blade comprises a blade body, a cutting part, a cutting blade and a cutting blade, wherein the blade body is arranged in the circumferential direction, one surface of the cutting part is a front surface of the cutting part, the other surface of the cutting part is a back surface of the cutting part, and an intersection line of the front surface of the cutting part and an outer contour surface is a cutting edge; one side of the blade main body is provided with a positioning part, a positioning structure is arranged on the positioning part, and the positioning structure and the cutting part are arranged in a one-to-one correspondence mode.

Description

Vertically-mounted thread turning blade

Technical Field

The utility model relates to a thread machining blade field especially relates to a found dress formula threading lathe blade.

Background

A vertically mounted threading insert is a common threading insert, and is generally triangular, and has a mounting hole in the center and a cutting portion at each of three corners, for example, a vertically mounted indexable multipurpose threading insert disclosed in patent No. 88219379.1.

The three cutting parts of the existing vertical-mounted thread turning blade need to be processed respectively, the processing technology is complex, the working procedures are multiple, and the position precision of a cutting edge and a tool nose relative to the center of the blade is not easy to guarantee.

The triangular threading inserts can be used in an indexable mode, namely after one cutting part is worn, the other two cutting parts are used by the rotatable inserts, and the service life of the inserts is prolonged. If the number of cutting portions can be further increased, the service life of the insert can be further prolonged.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the vertical thread turning insert is convenient to machine at a cutting part and guarantee precision.

The technical scheme adopted for solving the problems is as follows: a vertically-mounted threading machine blade comprises a blade main body, wherein the blade main body is provided with a mounting hole and at least two cutting parts, and the cutting parts are uniformly distributed on the circumference by taking the mounting hole as the center; the outer contour surfaces of the cutting parts are positioned on the same revolution surface, the axis of the revolution surface is the central line of the mounting hole, and the generatrix of the revolution surface is matched with the thread form; the cutting blade comprises a blade body, a cutting part, a cutting blade and a cutting blade, wherein the blade body is arranged in the circumferential direction, one surface of the cutting part is a front surface of the cutting part, the other surface of the cutting part is a back surface of the cutting part, and an intersection line of the front surface of the cutting part and an outer contour surface is a cutting edge; one side of the blade main body is provided with a positioning part, a positioning structure is arranged on the positioning part, and the positioning structure and the cutting part are arranged in a one-to-one correspondence mode.

Further, the method comprises the following steps: the positioning part is in the shape of a regular polygon, and the side surface of the positioning part is of a positioning structure.

Further, the method comprises the following steps: the positioning part is provided with a convex structure which is a positioning structure.

Further, the method comprises the following steps: the number of cutting portions is five.

Further, the method comprises the following steps: the front surface and the back surface of the cutting part are both planes, the included angle between the front surface of the cutting part of one cutting part and the back surface of the cutting part of the adjacent cutting part is a, and a is more than or equal to 85 degrees and less than or equal to 95 degrees.

The utility model has the advantages that: 1. the utility model discloses add man-hour, process earlier the circular structure that fig. 8 is shown and process out the mounting hole, process out the recess again on this circular structure, the part between the recess is cutting portion promptly, simple process, and the process is few to guarantee the position precision of cutting edge and the relative blade center of knife tip (being the mounting hole) easily.

2. The quantity and the shape of change recess can make the cutting portion of different quantity, consequently the utility model discloses can conveniently select cutting portion quantity to can make more cutting portions in order to prolong the live time.

3. The positioning part special for positioning is arranged, and the front positioning of the cutting part is avoided, so that the damage to the cutting edge is avoided.

Drawings

FIG. 1 is a perspective view of a vertically mounted threading insert;

FIG. 2 is a front view of a vertically mounted threading insert;

FIG. 3 is a rear view of a vertically mounted threading insert;

FIG. 4 is a rear view of a vertically mounted threading insert having a locating portion in the shape of a regular polygon;

FIG. 5 is a top view of a vertically mounted threading insert;

FIG. 6 is a front view of a vertically mounted threading insert having four cutting portions;

FIG. 7 is a schematic view of the axes and generatrices;

FIG. 8 is a schematic view of a circular configuration and surface of revolution;

FIG. 9 is a view showing a state in which the insert of the vertically mounted threading machine is mounted;

FIG. 10 is a view of the tool holder mated to a vertically mounted threading tool insert;

labeled as: the insert comprises an insert body 1, a mounting hole 11, a cutting part 12, an outer contour surface 121, a cutting part front surface 122, a cutting part back surface 123, a cutting edge 124, a groove 13, a positioning part 14, a positioning structure 141, an axis 2, a generatrix 3, a revolution curved surface 4, a cutter rod 5 and a cutter rod positioning hole 51.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

As shown in fig. 1 to 6: a vertical-mounted threading machine blade comprises a blade body 1, wherein the blade body 1 is provided with a mounting hole 11 and at least two cutting parts 12, and the cutting parts 12 are uniformly distributed on the circumference by taking the mounting hole 11 as the center; the outer contour surface 121 of each cutting part 12 is positioned on the same revolution surface 4, the axis 2 of the revolution surface 4 is the central line of the mounting hole 11, and the generatrix 3 of the revolution surface 4 is matched with the thread form; in the circumferential direction of the insert body 1, one surface of the cutting portion 12 is a cutting portion front surface 122, the other surface is a cutting portion back surface 123, and the intersection line of the cutting portion front surface 122 and the outer contour surface 121 is a cutting edge 124; one side of the insert body 1 is provided with a positioning part 14, the positioning part 14 is provided with a positioning structure 141, and the positioning structures 141 and the cutting parts 12 are arranged in a one-to-one correspondence manner.

The utility model discloses during processing, process earlier the circular structure shown in figure 8 and process out mounting hole 11, process out recess 13 again on this circular structure, the part between two recesses 13 is cutting portion 12 promptly, simple process, and the process is few to guarantee the position precision of cutting edge 124 and the relative blade center of knife tip (be mounting hole 11) easily. The number and shape of the grooves 13 are changed to make different numbers of cutting parts 12, so that the utility model discloses can conveniently select the number of cutting parts 12 to more cutting parts 12 can be made in order to prolong the service life. Fig. 2 and 6 show an insert having five and four cutting portions 12, respectively.

The outer contour surface 121 refers to both side surfaces of the cutting portion 12 and a transition surface between both side surfaces. The curved surface of revolution 4 shown in fig. 8 can be obtained by rotating the bus bar 3 shown in fig. 7 around the axis 2; when the generatrix 3 matches the thread form, the shape of the surface of revolution 4 matches the thread form, and the cutting portion 12 and the cutting edge 124 also match the thread form. If the blade is used for machining a triangular thread, the generatrix 3 is two intersecting lines as shown in fig. 7; if the blade is used for processing trapezoidal threads or rectangular threads, the bus 3 is correspondingly

Shape or

And (4) shaping.

In the vertical threading insert mounting state shown in fig. 9, a fastening member is inserted through the mounting hole 11 and connected to the holder 5 to press the insert body 1, and further, the rotation of the insert body 1 is restricted. The cutting portion front surface 122 and the cutting portion back surface 123 may be used as positioning surfaces, but the cutting portion front surface needs to be in contact with a positioning surface on the holder 5, that is, the cutting edge 124 is in contact with the holder 5, which may damage the holder 5 and the cutting edge 124. Therefore, the utility model is provided with a positioning part 14 which is specially used for preventing the rotation of the blade main body 1. As shown in fig. 10, the blade body 1 is restricted from rotating by providing the blade bar 5 with a bar positioning hole 51, and inserting the positioning portion 14 into the bar positioning hole 51 and fitting the same.

The positioning portion 14 can be as shown in fig. 3, and the positioning portion 14 has a convex structure thereon, which is a positioning structure 141. The advantage is that the force-bearing capacity of the positioning portion 14 is strong. As shown in fig. 4, the positioning portion 14 may have a regular polygon shape, and the side surface of the positioning portion 14 is a positioning structure 141. The advantage is that the positioning part 14 has a simple shape and is easier to process.

As mentioned above, the cutting portions 12 with different numbers can be manufactured by changing the number and shape of the grooves 13. The use time of the blade 1 can be prolonged if more cutting parts 12 are provided, but the cutting parts 12 are smaller and the strength is reduced; the small number of cutting portions 12 is advantageous for securing strength, but cannot extend the service life of the insert 1. The present invention preferably has five cutting portions 12.

For convenience of machining, the cutting portion front surface 122 and the cutting portion rear surface 123 are preferably both flat surfaces. In order to facilitate chip removal during cutting and avoid influencing machining, the adjacent cutting parts 12 should keep a proper distance, the size of the groove 13 should be reasonably set, and preferably, the included angle between the front surface 122 of the cutting part of one cutting part 12 and the back surface 123 of the cutting part of the adjacent cutting part 12 is a, and a is more than or equal to 85 degrees and less than or equal to 95 degrees.

The cutting portion front surface 122 may also be a concave surface to sharpen the cutting edge 124.

Claims

1. A vertically-mounted threading machine blade comprises a blade main body (1), wherein the blade main body (1) is provided with a mounting hole (11) and at least two cutting parts (12), and the cutting parts (12) are uniformly distributed on the circumference by taking the mounting hole (11) as the center; the method is characterized in that: the outer contour surface (121) of each cutting part (12) is positioned on the same revolution surface (4), the axis (2) of the revolution surface (4) is the central line of the mounting hole (11), and the generatrix (3) of the revolution surface (4) is matched with the thread form; in the circumferential direction of the insert body (1), one surface of the cutting part (12) is a cutting part front surface (122), the other surface is a cutting part back surface (123), and the intersection line of the cutting part front surface (122) and the outer contour surface (121) is a cutting edge (124); one side of the blade main body (1) is provided with a positioning part (14), the positioning part (14) is provided with a positioning structure (141), and the positioning structures (141) and the cutting parts (12) are arranged in a one-to-one correspondence mode.

2. A vertically mounted threading insert as set forth in claim 1 wherein: the positioning part (14) is in the shape of a regular polygon, and the side surface of the positioning part (14) is provided with a positioning structure (141).

3. A vertically mounted threading insert as set forth in claim 1 wherein: the positioning part (14) is provided with a convex structure which is a positioning structure (141).

4. A vertically mounted threading insert according to any of claims 1 to 3 wherein: the number of the cutting parts (12) is five.

5. A vertically mounted threading insert according to claim 4 wherein: the cutting part front surface (122) and the cutting part back surface (123) are both planes, the included angle between the cutting part front surface (122) of one cutting part (12) and the cutting part back surface (123) of the adjacent cutting part (12) is a, and a is more than or equal to 85 degrees and less than or equal to 95 degrees.