CN215199816U

CN215199816U - Circular blade and cutter thereof

Info

Publication number: CN215199816U
Application number: CN202121369790.2U
Authority: CN
Inventors: 黄启君; 涂勇强
Original assignee: Kunshan Changying Hard Material Technology Co Ltd
Current assignee: Kunshan Changying Hard Material Technology Co Ltd
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2021-12-17
Anticipated expiration: 2031-06-21

Abstract

The utility model discloses a circular blade and a cutter thereof, the blade comprises a blade main body, the blade main body is cylindrical, a plurality of mounting side positioning surfaces are arranged on the outer circular surface of the blade main body, the blade main body is provided with a mounting hole along the axis position, and the bottom surface of the blade main body is provided with a positioning base surface; at least one bottom surface of the blade main body is provided with a cutting edge, and the cutting edge is positioned on the outer side of the positioning base surface; the cutting edge is arc-shaped, the width of the head end edge of the cutting edge is gradually increased to the width of the tail end edge of the cutting edge, and the angle of the head end edge of the cutting edge is gradually decreased to the angle of the tail end edge of the cutting edge; the utility model provides a circular blade sets up a plurality of cutting edges in the blade main part, through the convex cutting edge of design to the sword width that sets up the cutting edge is crescent from head end to tail end, the contained angle of cutting edge reduces from head end to tail end gradually, and the impact force of work piece to the blade when bearing the cutting that can be better has increased the life of blade.

Description

Circular blade and cutter thereof

Technical Field

The utility model relates to a milling cutter blade technical field, concretely relates to circular blade and cutter thereof.

Background

In the field of metal machining, milling plays an indispensable role. The milling cutter in the milling process is an indispensable part for milling. At present, the types of milling tools are more, and a milling tool exists, wherein the radial angle of an inner point of the tool is smaller than the radial negative angle of an outer point of the tool. Since the cutting resistance of the insert is increased as the negative radial angle is increased, and when the cutting depth is gradually increased, the edge closer to the outer point is more likely to fail (i.e., break or chipping) due to the increased resistance, and how to provide a tool capable of solving this problem is a problem that needs to be considered.

Disclosure of Invention

An object of the utility model is to provide a circular blade and cutter thereof, this cutter can effectually resist the impact in the course of working, has increased the life of cutter.

In order to achieve the purpose, the utility model is realized by adopting the following technical scheme:

a circular blade comprises a blade main body, wherein the blade main body is cylindrical, a plurality of mounting side positioning surfaces are arranged on the outer circular surface of the blade main body, a mounting hole is formed in the blade main body along the axis, and a positioning base surface is arranged on the bottom surface of the blade main body;

a cutting edge is arranged on at least one bottom surface of the blade main body and is positioned on the outer side of the positioning base surface;

the cutting edge is arc-shaped, the width of the head end edge of the cutting edge is gradually increased to the width of the tail end edge of the cutting edge, and the angle of the head end edge of the cutting edge is gradually decreased to the angle of the tail end edge of the cutting edge.

Further, the blade width ranges are: 0 to 0.6 mm.

Further, the range of the edge angle is: -20 °.

Further, the cutting edge is provided in a spiral shape on the bottom surface of the insert main body.

Further, the cutting edge has a lowest point on the bottom surface of the insert body, and the shape between the head end of the cutting edge and the tail end of the cutting edge from the lowest point is curved.

Furthermore, a chip groove is further formed in the outer circular surface of the blade body, the arrangement direction of the chip groove is parallel to the axial direction of the blade body, and the end portion of the chip groove is connected to the cutting edge.

Further, a plurality of chip grooves are connected to each cutting edge.

Further, four to eight cutting edges are provided on one bottom surface of the insert body.

Further, cutting edges are arranged on two bottom surfaces of the blade main body.

The application also discloses a cutter, which comprises a cutter body and the circular blade, wherein the cutter body can rotate around a rotating axis, the periphery of the cutter body is provided with at least one blade seat for connecting the blade main body, the blade seat is provided with a connecting base surface and a connecting side surface, and the connecting base surface is provided with a connecting hole;

the insert body is connected with the connecting hole in the insert seat through a connecting screw, the positioning base surface is in contact connection with the connecting base surface, and the connecting side surface is in contact connection with the side positioning surface.

According to the above technical scheme, the embodiment of the utility model has following effect at least:

1. according to the circular blade designed by the application, the blade main body is provided with the plurality of cutting edges, the arc-shaped cutting edges are designed, the edge width of each cutting edge is gradually increased from the head end to the tail end, and the edge angle of each cutting edge is gradually reduced from the head end to the tail end, so that the impact force of a workpiece on the blade during cutting can be better borne, and the service life of the blade is prolonged;

2. the cutting edge of the cutter adopts a spiral line design, so that a larger axial angle can be obtained, the chip removal direction is effectively changed, and the cutter blade is lighter and faster in cutting;

3. the scrap crushing groove is designed on the outer circular surface of the blade main body and is connected with the cutting edge, when a workpiece is machined, scrap iron is divided into a plurality of independent units, and the resistance received by the blade is effectively dispersed by the divided scrap iron;

4. the double-sided blade of this application design to design a plurality of cutting edges on every face, increased the number of times of use of blade.

Drawings

FIG. 1 is a schematic structural view of a blade body according to an embodiment of the present invention;

FIG. 2 is a top view of a blade body according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view taken along line A-A and a close-up view of the cross-section taken at point a in FIG. 2;

FIG. 4 is a schematic view of a cross-section B-B taken at point B in FIG. 2 and a partially enlarged view of the cross-section;

FIG. 5 is a schematic cross-sectional view taken along line C-C at point C in FIG. 2 and a close-up view of the cross-section;

FIG. 6 is a top view of a blade body according to an embodiment of the present invention;

FIG. 7 is an enlarged view taken at D in FIG. 6;

fig. 8 is a schematic view of the connection between the blade body and the cutter body according to the embodiment of the present invention;

FIG. 9 is an exploded view of FIG. 8;

FIG. 10 is a front view of FIG. 8;

fig. 11 is a schematic view of the different cutting depths of the blade body according to the embodiment of the present invention.

Wherein: 1. a blade body; 2. a cutter body; 3. a connecting screw; 11. a side positioning surface; 12. mounting holes; 13. positioning a base plane; 14. a cutting edge; 15. a scrap groove; 21. a blade seat; 211. connecting the base surfaces; 212. a connecting side surface; 213. connecting holes; l, the axis of rotation.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

It should be noted that, in the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer", etc. indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for convenience of description of the present invention but do not require the present invention to be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. As used in the description of the present invention, the terms "front," "back," "left," "right," "up," "down" and "in" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in fig. 1 to 11, a circular blade includes a blade body 1, the blade body 1 is cylindrical, a plurality of mounting side positioning surfaces 11 are provided on an outer circumferential surface of the blade body 1, a mounting hole 12 is provided along an axial position of the blade body 1, and a positioning base 13 is provided on a bottom surface of the blade body 1; at least one bottom surface of the insert body 1 is provided with a cutting edge 14, and the cutting edge 14 is positioned outside the positioning base surface 13; the cutting edge 14 is arc-shaped, the head edge width to the tail edge width of the cutting edge 14 gradually increases, and the head edge angle to the tail edge angle of the cutting edge gradually decreases.

The utility model provides a circular blade sets up a plurality of cutting edges 14 in the blade main part, through the cutting edge 14 of design arc to the sword width that sets up cutting edge 14 increases gradually from the head end to the tail end, the contained angle of cutting edge 14 reduces from the head end to the tail end gradually, and the impact force of work piece to the blade when bearing the cutting that can be better has increased the life of blade.

The shape and structure of the insert of the present application are specifically shown in fig. 1 to 7, and the insert includes an insert body 1, the shape of the insert body 1 is a substantially hollow cylindrical structure, and cutting edges 14 are provided on both bottom surfaces of the insert body 1 to form the insert. The cutting edges are arranged on two side surfaces of the blade body 1 so as to increase the using times of the blade, and when the cutting edges on one bottom surface are completely failed, the blade can be continuously used by being replaced to the other surface.

In the present application, the shape of the cutting edge 14 is designed to provide a more prominent effect. As shown in fig. 2, four cutting edges 14 are formed on one bottom surface of the insert body 1, and the number of the cutting edges 14 can be increased or decreased as appropriate, for example, 2, 4, 7, or 8 (0 to 8). The cutting edges 14 are arc-shaped, and the cutting edges 14 are arranged in a spiral line. With reference to fig. 1 and 2, the height of the cutting edge 14 decreases gradually from one end to the other. As shown in fig. 2, three points a, b, c are provided to illustrate specific variations of the cutting edge 14.

As shown in fig. 3 to 5, the width of the cutting edge at point a is da, and the edge angle of the cutting edge 14 is g; the width of the cutting edge at the point b is db, and the edge angle of the cutting edge 14 is f; the width of the cutting edge at point c is dc, and the cutting edge 14 has an edge angle e. According to the design of the present application, dc > db > da; g > f > e. The width and the angle of the main edge gradually change along with the increase of the cutting depth, and the strength of the blade is higher.

As shown in fig. 6 and 7, the blade is further provided with two chip grooves 15, the number of the chip grooves 15 can be increased or decreased (the number is 0-6), the chip grooves 15 are arranged on the outer circumferential surface of the blade, two ends of each chip groove 15 are connected with the cutting edges 14 on the bottom surface, and when a workpiece is machined, the two chip grooves 15 divide the iron chips into three independent units, so that the resistance of the iron chips to the cutting edges is reduced, and the service life of the cutting edges is prolonged.

Based on the circular blade designed by the application, the application also provides a cutter, and the structure of the cutter is shown in figures 8 to 9. The cutter comprises a cutter body 2 capable of rotating around a rotation axis L and the circular blade, wherein the periphery of the cutter body 2 is provided with a plurality of blade seats 21 for connecting the cutter body 1, the blade seats 21 are provided with a connecting base surface 211 and a connecting side surface 212, and the connecting base surface 211 is provided with a connecting hole 213; the insert body 1 is connected to the attachment hole 213 in the insert seat 21 by the attachment screw 3, the positioning base 13 is in contact with the attachment base 211, and the attachment side 212 is in contact with the side positioning surface 11.

In the present application, the number of the insert seats 21 may be four, five, six, etc. The connecting flank 212 in the insert seat 21 is designed according to the number of cutting edges, and can help to limit the rotation of the insert about its axis.

As shown in FIG. 10, the insert designed by the present application can obtain a larger axial angle r, which can reach 20 degrees at most, so that the cutting is lighter and faster.

When the cutter is used, the cutter body is connected onto a connecting shaft of a milling machine, the connecting shaft rotates to drive the blade main body 1 to rotate around the rotating axis L, and the cutting edge 14 of the blade main body 1 is contacted with a workpiece to finish cutting. In machining, as shown in fig. 11, the cutting edge 14 and the workpiece are brought into contact with each other to complete machining, and the cutting depth ap may be smaller than the height of the cutting edge 14. The chip groove 15 provided on the cutting edge 14 can effectively divide the iron chips into several units, reducing the resistance to the cutting edge.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.

Claims

1. The circular blade is characterized by comprising a blade main body (1), wherein the blade main body (1) is cylindrical, a plurality of mounting side positioning surfaces (11) are arranged on the outer circular surface of the blade main body (1), a mounting hole (12) is formed in the blade main body (1) along the axis, and a positioning base surface (13) is arranged on the bottom surface of the blade main body (1);

a cutting edge (14) is arranged on at least one bottom surface of the blade main body (1), and the cutting edge (14) is positioned on the outer side of the positioning base surface (13);

the cutting edge (14) is arc-shaped, the width of the head end edge of the cutting edge (14) is gradually increased to the width of the tail end edge, and the angle of the head end edge of the cutting edge is gradually decreased to the angle of the tail end edge of the cutting edge.

2. The circular blade as claimed in claim 1, wherein the edge width is in the range of: 0 to 0.6 mm.

3. The circular blade as in claim 1, wherein the range of the edge angle is: -20 °.

4. The circular insert according to claim 1, characterized in that the cutting edge (14) is arranged in a helix on the bottom surface of the insert body (1).

5. The circular insert according to claim 1, wherein the cutting edge (14) has a lowest point on the bottom surface of the insert body (1), and the shape between the lowest point and the head end of the cutting edge (14) and the tail end of the cutting edge (14) is curved.

6. The circular blade as claimed in claim 1, wherein a chip groove (15) is further provided on the outer circumferential surface of the blade body (1), the chip groove (15) is provided in a direction parallel to the axial direction of the blade body (1), and the end of the chip groove (15) is connected to the cutting edge (14).

7. The circular insert according to claim 6, characterized in that a plurality of chip flutes (15) are connected at each cutting edge (14).

8. The circular insert according to claim 1, characterized in that four to eight cutting edges (14) are provided on one bottom surface of the insert body (1).

9. The circular insert according to claim 1, characterized in that the insert body (1) is provided with cutting edges (14) on both bottom surfaces.

10. A tool, characterized by comprising a tool body (2) rotatable about an axis of rotation (L) and a circular insert according to any one of claims 1 to 9, the tool body (2) being provided at its periphery with at least one insert seat (21) for attachment to an insert body (1), the insert seat (21) having an attachment base surface (211) and an attachment side surface (212), the attachment base surface (211) being provided with an attachment hole (213) therein;

the insert body (1) is connected with the connecting hole (213) in the insert seat (21) through a connecting screw (3), the positioning base surface (13) is in contact connection with the connecting base surface (211), and the connecting side surface (212) is in contact connection with the side positioning surface (11).