Negative-angle double-sided groove type indexable turning blade

Abstract

The negative-angle double-face groove type indexable turning blade comprises a blade body, the blade body is provided with two surfaces which are the same in structure and oppositely arranged up and down, the two surfaces are connected through side faces, and cutting units are formed at the vertex angles of the two surfaces correspondingly; each cutting unit comprises two main cutting edges arranged at an included angle and an arc edge connected between the two main cutting edges; the surfaces are connected with the main cutting edges to form main cutting edge faces, and a chip breaking boss is formed between the two main cutting edge faces; an included angle alpha is formed between the main cutting edge and the horizontal plane; the main cutting edge surface faces inwards from the main cutting edge; according to the turning blade, the sharp main cutting edges are formed, and the sharp arc edge is formed between the two main cutting edges, so that the cutting effect of the whole turning blade is good; the turning blade is provided with the chip breaking bosses, the chip breaking faces and the chip breaking grooves, the overall chip breaking effect is good, and the turning blade has the large-range chip breaking treatment capacity.

Description

Technical Field

[0001] The utility model relates to the technical field of turning inserts, in particular to a negative-angle double-sided groove indexable turning insert. Background Art

[0002] A cutting insert is a tool used in machining processes. These prefabricated polygonal inserts, each with several cutting edges, are mechanically clamped to a toolholder. If a cutting edge becomes blunt during use, the insert can simply be loosened, indexed, or replaced, and then re-clamped for continued use. Cutting inserts are primarily used in metal turning, milling, parting, grooving, and threading. Utility Model Content

[0003] The utility model provides a negative-angle double-sided groove indexable turning insert.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: a negative-angle double-sided groove indexable turning insert, comprising: a blade body, the blade body having two surfaces with the same structure and opposed to each other up and down, the two surfaces being connected by a side surface, and cutting units being formed at the top corners of the two surfaces, respectively, the cutting units comprising: two main cutting edges arranged at an angle and an arc edge connected between the two main cutting edges; the surfaces connecting the main cutting edges form a main cutting edge surface, and a chip breaking boss is formed between the two main cutting edge surfaces; the main cutting edge forms an angle α with the horizontal plane; the main cutting edge surface extends inward and downward from the main cutting edge, a chip breaking surface is provided connecting the main cutting edge surface, and the chip breaking surface extends upward.

[0005] As a preferred solution of the present invention, the main cutting edge extends in an arc shape from the connecting end with the arc edge to the other end.

[0006] As a preferred solution of the present invention, the center line between the two main cutting edges points to the center of the surface, the chip breaking boss is located on the center line, and the chip breaking boss is gradually widened from the top corner of the surface toward the center of the surface.

[0007] As a preferred solution of the present invention, the chip breaking boss is formed with a first chip breaking surface and a second chip breaking surface, and a height difference is formed at the connection between the first chip breaking surface and the second chip breaking surface.

[0008] As a preferred solution of the present invention, an arc-shaped chip-breaking groove is formed between the chip-breaking surface and the main cutting edge surface.

[0009] As a preferred solution of the present invention, the surfaces are connected to the arc blades to form an arc blade surface.

[0010] As a preferred solution of the present invention, a central boss is formed at the center of the surface, and the outer side surface of the central boss forms the chip breaking surface.

[0011] As a preferred solution of the present invention, a mounting hole is provided at the central boss.

[0012] It can be seen from the above technical solutions that compared with the prior art, the present invention has the following beneficial technical effects:

[0013] 1. The turning insert of the present invention is provided with cutting units at the top corners of both surfaces. The triangular design of the insert body makes the turning insert form six cutting units. When one cutting unit is worn, it can be replaced with another cutting unit, reducing the need to replace the turning insert.

[0014] 2. The turning insert of the utility model is formed with a sharp main cutting edge, and a sharp arc edge is formed between the two main cutting edges, and the entire turning insert has a good cutting effect;

[0015] 3. The turning insert of the utility model is provided with a chip-breaking boss, a chip-breaking surface and a chip-breaking groove, which has a good overall chip-breaking effect and a wide range of chip-breaking processing capabilities;

[0016] 4. The combination of sharp cutting edge and low cutting force chip breaker ensures high cutting sharpness, reduces cutting resistance and makes cutting easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0018] Figure 1 This is a front view of the negative angle double-sided groove indexable turning insert of the utility model;

[0019] Figure 2 This is a side view of the negative angle double-sided groove indexable turning insert of the utility model;

[0020] Figure 3 This is an axial view of the negative angle double-sided groove indexable turning insert of the utility model. DETAILED DESCRIPTION

[0021] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0022] A negative angle double-sided indexable turning insert, see Figure 1-3 As shown, it includes: a blade body 100, which is made of a high-hardness, wear-resistant and corrosion-resistant metal material. The blade body 100 has two surfaces 101 with the same structure and facing each other. The two surfaces 101 are connected by a side surface 102. Cutting units are formed at the top corners of the two surfaces 101, such as Figure 3 As shown, the blade body 100 is arranged in a triangular shape, so three cutting units are formed on one surface 101, and a total of six cutting units are arranged on the upper and lower surfaces. During use, if a single cutting unit is worn, its position can be replaced and an unworn cutting unit can be used for processing.

[0023] Furthermore, the cutting unit includes: two main cutting edges 110 arranged at an angle and a circular arc edge 120 connected between the two main cutting edges 110, and the main cutting edges 110 form an angle α with the horizontal plane;

[0024] Here, α is approximately 5°.

[0025] More specifically, if Figure 2 As shown, the main cutting edge 110 extends in an arc shape from the connecting end with the circular arc edge 120 to the other end.

[0026] Furthermore, the surface 101 connects the main cutting edge 110 to form a main cutting edge face 111, and a chip breaking boss 130 is formed between the two main cutting edge faces 111; the main cutting edge face 111 extends inward and downward from the main cutting edge 110, and the entire main cutting edge 110 is sharper and has a better cutting effect.

[0027] Furthermore, a chip breaking surface 112 is provided in connection with the main cutting edge surface 111 , and the chip breaking surface 112 extends obliquely upward.

[0028] Specifically, the center line between the two main cutting edges 110 points to the center of the surface, the chip breaking boss 130 is located on the center line, and the chip breaking boss 130 is gradually widened from the top angle of the surface 101 toward the center of the surface 101, and the chip breaking boss 130 is formed with a first chip breaking surface 131 and a second chip breaking surface 132, and a height difference is formed at the connection between the first chip breaking surface 131 and the second chip breaking surface 132; an arc-shaped chip breaking groove 113 is formed between the chip breaking surface 112 and the main cutting edge surface 111, and through the cooperation of the chip breaking boss 130, the arc-shaped chip breaking groove 113 and the chip breaking surface 112, the chip breaking ability of the entire turning insert is stronger and the chip breaking range is larger.

[0029] Furthermore, the surface 101 is connected to the arc edge 120 to form an arc edge surface 121 , and the arc edge 120 can be used as a wiper edge.

[0030] Furthermore, a center boss 140 is formed at the center of the surface 101 , and the outer side surface of the center boss 140 forms the chip breaking surface 112 ; a mounting hole 141 is provided at the center boss 140 , and the turning insert can be assembled to the tool holder through the mounting hole 141 .

[0031] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A negative angle double-sided groove indexable turning insert, comprising: The blade body (100) has two surfaces (101) with the same structure and facing each other up and down, the two surfaces (101) are connected by a side surface (102), and cutting units are formed at the top corners of the two surfaces (101), characterized in that: The cutting unit comprises: two main cutting edges (110) arranged at an angle and a circular arc edge (120) connected between the two main cutting edges (110); The surface (101) is connected to the main cutting edge (110) to form a main cutting edge face (111), and a chip breaking boss (130) is formed between the two main cutting edge faces (111); The main cutting edge (110) forms an angle α with the horizontal plane; The main cutting edge surface (111) extends inwardly and obliquely downwardly from the main cutting edge (110); a chip breaking surface (112) is provided connecting the main cutting edge surface (111); and the chip breaking surface (112) extends obliquely upwardly.

2. The negative angle double-sided groove indexable turning insert according to claim 1, characterized in that: The main cutting edge (110) extends in an arc shape from the end connected to the circular arc edge (120) to the other end.

3. The negative angle double-sided groove indexable turning insert according to claim 1, characterized in that: The center line between the two main cutting edges (110) points to the center of the surface, the chip breaking boss (130) is located on the center line, and the chip breaking boss (130) is gradually widened from the top corner of the surface (101) toward the center of the surface (101).

4. The negative angle double-sided groove indexable turning insert according to claim 3, characterized in that: The chip-breaking boss (130) is formed with a first chip-breaking surface (131) and a second chip-breaking surface (132), and a height difference is formed at the connection between the first chip-breaking surface (131) and the second chip-breaking surface (132).

5. The negative angle double-sided groove indexable turning insert according to claim 1, characterized in that: An arc-shaped chip-breaking groove (113) is formed between the chip-breaking surface (112) and the main cutting edge surface (111).

6. The negative angle double-sided groove indexable turning insert according to claim 1, characterized in that: The surface (101) is connected to the circular arc blade (120) to form a circular arc blade surface (121).

7. The negative angle double-sided groove indexable turning insert according to claim 1, characterized in that: A central boss (140) is formed at the center of the surface (101), and the outer side surface of the central boss (140) forms the chip breaking surface (112).

8. The negative angle double-sided groove indexable turning insert according to claim 7, characterized in that: The central boss (140) is provided with a mounting hole (141).

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