Four-edge chip breaking cutting knife

Abstract

The utility model discloses a four-edge chip breaking cutting knife which comprises hard alloy cutting edges and a tool knife handle part, the hard alloy cutting edges and the tool knife handle part jointly form a four-edge cutting knife tool, and the hard alloy cutting edges comprise the first cutting edge, the second cutting edge, the third cutting edge and the fourth cutting edge. A plurality of chip breaker grooves are formed in the outer sides of the first cutting edge, the second cutting edge, the third cutting edge and the fourth cutting edge, the tool handle part comprises a grab handle and a connecting base, the connecting base is fixedly installed on one side of the grab handle, and the grab handle is fixedly connected with the hard alloy cutting edge through the connecting base. Due to the fact that the hard alloy cutting edges are arranged, the four cutting edges are arranged, better durability is achieved, the durability is improved by 1.5-2 times compared with that of a conventional three-edge cutting tool, chip breaking grooves are formed in each cutting edge and distributed according to a certain rule, chips can be rapidly broken, cutting resistance is reduced, the chip removal effect is enhanced, and the service life of the cutting tool is prolonged. And meanwhile, good surface machining quality can be obtained, and lines are not prone to being generated on the machined surface.

Description

Technical Field

[0001] The utility model relates to the technical field of processing tools, and particularly relates to a four-edge chip-breaking cutting tool for blanking. Background Art

[0002] When processing materials, the cutting tool for blanking is a key tool, and its performance directly affects the processing efficiency, processing quality and the service life of the cutting tool.

[0003] During the long-term use of a three-edge cutting tool for blanking, due to the relatively fast wear of the cutting edges, the overall durability of the cutting tool is limited. Frequent replacement of the cutting tool not only increases the production cost, but also reduces the production efficiency. In addition, the three-edge structure has relatively large vibrations during the rapid blanking process, which easily affects the processing accuracy and surface quality. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a four-edge chip-breaking cutting tool for blanking.

[0005] To solve the above technical problems, the utility model provides the following technical solutions:

[0006] A four-edge chip-breaking cutting tool for blanking of the utility model includes a cemented carbide cutting edge and a tool handle part. The cemented carbide cutting edge and the tool handle part together form a four-edge cutting tool for blanking. The cemented carbide cutting edge includes a first cutting edge, a second cutting edge, a third cutting edge, a fourth cutting edge and a chip-breaking groove. A plurality of the chip-breaking grooves are opened on the outer sides of the first cutting edge, the second cutting edge, the third cutting edge and the fourth cutting edge. The tool handle part includes a grip and a connecting seat. One side of the grip is fixedly installed with the connecting seat, and the grip is fixedly connected with the cemented carbide cutting edge through the connecting seat.

[0007] As a preferred technical solution of the utility model, the length of the grip is L1, the total length of the tool handle part is L2, and the total length of the four-edge cutting tool for blanking is L3.

[0008] As a preferred technical solution of the utility model, the total length of the cemented carbide cutting edge is H, the angle of the first flank angle at the bottom edge of the cemented carbide cutting edge is γ, the angle of the second flank angle at the bottom of the cemented carbide cutting edge is k, the width of the first flank angle of the cemented carbide cutting edge is t3, the angle of the bottom edge deflection of the cemented carbide cutting edge is θ, and the angle of the rake angle of the cemented carbide cutting edge is α.

[0009] As a preferred technical solution of the present utility model, the angle of the first radial clearance angle of the cemented carbide cutting edge is β, the angle of the second radial clearance angle of the cemented carbide cutting edge is λ, the width of the first radial clearance angle of the cemented carbide cutting edge is t1, the width of the second radial clearance angle of the cemented carbide cutting edge is t2, and the core thickness of the cemented carbide cutting edge is h.

[0010] As a preferred technical solution of the present utility model, the distance from the first chip breaker groove on the first cutting edge to the end edge is a, the distance from the first chip breaker groove on the second cutting edge to the end edge is b, the distance from the first chip breaker groove on the third cutting edge to the end edge is c, and the distance from the first chip breaker groove on the fourth cutting edge to the end edge is d, where a < b < c < d.

[0011] As a preferred technical solution of the present utility model, the center distance between the chip breaker grooves is e, the fillet radius of the chip breaker groove is R, the depth of the chip breaker groove is g, and the width of the chip breaker groove is f.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] The present utility model is provided with a cemented carbide cutting edge, has four cutting edges, has better durability, and the durability is 1.5 - 2 times higher than that of the conventional three-edge cutting tool. Moreover, each cutting edge is provided with a chip breaker groove, and they are arranged in a certain pattern, which can break chips quickly, reduce the cutting resistance, enhance the chip removal effect, and at the same time can obtain good surface machining quality, and the machined surface is not easy to generate patterns. Description of the Drawings

[0014] The drawings are used to provide further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0015] Figure 1 is the front view of the present utility model;

[0016] Figure 2 is the Figure 1 enlarged view of the structure at A in

[0017] Figure 3 is the left side view of the present utility model;

[0018] Figure 4 is the structure diagram of the cemented carbide cutting edge of the present utility model;

[0019] In the figure: 1. Cemented carbide cutting edge; 101. First cutting edge; 102. Second cutting edge; 103. Third cutting edge; 104. Fourth cutting edge; 105. Chip breaker groove; 2. Tool shank; 201. Handle; 202. Connecting seat. Detailed implementation mode

[0020] The preferred embodiments of the present utility model will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present utility model, and are not used to limit the present utility model.

[0021] Among them, the same reference numerals in the drawings all refer to the same components.

[0022] As Figures 1-4 shown, the present utility model provides a four-edge chip-breaking cutting tool, including a cemented carbide cutting edge 1 and a tool shank 2. The cemented carbide cutting edge 1 and the tool shank 2 together form a four-edge cutting tool. The cemented carbide cutting edge 1 includes a first cutting edge 101, a second cutting edge 102, a third cutting edge 103, a fourth cutting edge 104, and a chip breaker groove 105. A plurality of chip breaker grooves 105 are provided on the outer sides of the first cutting edge 101, the second cutting edge 102, the third cutting edge 103, and the fourth cutting edge 104. The tool shank 2 includes a handle 201 and a connecting seat 202. A connecting seat 202 is fixedly installed on one side of the handle 201, and the handle 201 is fixedly connected to the cemented carbide cutting edge 1 through the connecting seat 202.

[0023] Furthermore, the length of the handle 201 is L1, the total length of the tool shank 2 is L2, and the total length of the four-edge cutting tool is L3.

[0024] Furthermore, the total length of the cemented carbide cutting edge 1 is H, the angle of the first clearance angle of the bottom edge of the cemented carbide cutting edge 1 is γ, the angle of the second clearance angle at the bottom of the cemented carbide cutting edge 1 is k, the width of the first clearance angle of the cemented carbide cutting edge 1 is t3, the angle of the bottom edge deflection of the cemented carbide cutting edge 1 is angle θ, and the angle of the rake angle of the cemented carbide cutting edge 1 is α.

[0025] Furthermore, the angle of the first radial clearance angle of the cemented carbide cutting edge 1 is β, the angle of the second radial clearance angle of the cemented carbide cutting edge 1 is λ, the width of the first radial clearance angle of the cemented carbide cutting edge 1 is t1, the width of the second radial clearance angle of the cemented carbide cutting edge 1 is t2, and the core thickness of the cemented carbide cutting edge 1 is h.

[0026] Further, the distance from the first chip breaker groove 105 on the first cutting edge 101 to the end edge is a, the distance from the first chip breaker groove 105 on the second cutting edge 102 to the end edge is b, the distance from the first chip breaker groove 105 on the third cutting edge 103 to the end edge is c, and the distance from the first chip breaker groove 105 on the fourth cutting edge 104 to the end edge is d, where a < b < c < d.

[0027] Further, the center distance between the chip breaker grooves 105 is e, the fillet radius of the chip breaker groove 105 is R, the depth of the chip breaker groove 105 is g, and the width of the chip breaker groove 105 is f.

[0028] Working principle: This blanking tool has four cutting edges, with better durability, 1.5 - 2 times higher durability than that of a conventional three-edge blanking tool. Chip breaker grooves are provided on each cutting edge and are arranged in a certain pattern, which can break chips quickly, reduce cutting resistance, enhance the chip removal effect, and at the same time obtain good surface machining quality, and the machined surface is not likely to generate patterns.

[0029] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A four-edged chip breaker and material cutting tool, characterized in that: The invention comprises a cemented carbide cutting edge (1) and a tool shank (2), wherein the cemented carbide cutting edge (1) and the tool shank (2) together form a four-edged cutting tool, wherein the cemented carbide cutting edge (1) comprises a first cutting edge (101), a second cutting edge (102), a third cutting edge (103), a fourth cutting edge (104), and a chip breaker (105), wherein the outer sides of the first cutting edge (101), the second cutting edge (102), the third cutting edge (103), and the fourth cutting edge (104) are each provided with a plurality of chip breaker grooves (105), and the tool shank (2) comprises a handle (201) and a connecting seat (202), wherein the connecting seat (202) is fixedly mounted on one side of the handle (201), and the handle (201) is fixedly connected to the cemented carbide cutting edge (1) via the connecting seat (202).

2. A four-edged chip breaker and material cutting tool according to claim 1, characterized in that: The length of the handle (201) is L1, the total length of the tool handle (2) is L2, and the total length of the four-blade cutting tool is L3.

3. A four-edged chip breaker and material cutting tool according to claim 1, characterized in that: The total length of the cemented carbide cutting edge (1) is H, the angle of the first back angle of the bottom edge of the cemented carbide cutting edge (1) is γ, the angle of the second back angle of the bottom of the cemented carbide cutting edge (1) is k, the first back angle width of the cemented carbide cutting edge (1) is t3, the bottom edge deflection angle of the cemented carbide cutting edge (1) is angle θ, and the front angle angle of the cemented carbide cutting edge (1) is α.

4. A four-edged chip breaker and material cutting tool according to claim 3, characterized in that: The angle of the radial first clearance angle of the cemented carbide cutting edge (1) is β, the angle of the radial second clearance angle of the cemented carbide cutting edge (1) is λ, the radial first clearance angle width of the cemented carbide cutting edge (1) is t1, the radial second clearance angle width of the cemented carbide cutting edge (1) is t2, and the core thickness of the cemented carbide cutting edge (1) is h.

5. A four-edged chip breaker and material cutting tool according to claim 1, characterized in that: The distance between the first chip breaker (105) on the first cutting edge (101) and the end edge is a, the distance between the first chip breaker (105) on the second cutting edge (102) and the end edge is b, the distance between the first chip breaker (105) on the third cutting edge (103) and the end edge is c, and the distance between the first chip breaker (105) on the fourth cutting edge (104) and the end edge is d, wherein a <b<c<d。 6. A four-edged chip breaker and material cutting tool according to claim 5, characterized in that: The center distance between the chip breaker grooves (105) is e, the fillet radius of the chip breaker groove (105) is R, the depth of the chip breaker groove (105) is g, and the width of the chip breaker groove (105) is f.

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