Chip separating groove blade

Abstract

The utility model discloses a chip dividing groove blade, which relates to the technical field of machine tool processing, is applied to a numerical control machine tool, and comprises a turning tool body, a main body is clamped on the turning tool body, two symmetrically distributed cutting parts are arranged on a first surface of the main body, chip breaking islands III are arranged on the cutting parts, and the chip breaking islands III are arranged on a second surface of the main body. The main body is provided with an upper pressing limiting groove, the upper pressing limiting groove is located between the two cutting parts, the upper pressing limiting groove is a V-shaped groove, the two ends of the upper pressing limiting groove are each provided with an upper pressing positioning face, the cutting discharging direction is changed through a cutter blade chip breaking island, chip cutting and chip breaking are facilitated, and good machining surface quality is obtained; the chip separating groove blade can realize high-cutting-parameter machining, and the cutting efficiency is high; the cutter has long service life, and the unit price cost of the cutter is greatly reduced; and the tool inventory is reduced.

Description

Technical Field

[0001] This utility model relates to the field of machine tool processing technology, and in particular to a chip-splitting groove insert. Background Technology

[0002] Currently, with the improvement of mechanical manufacturing performance of parts, design requirements are becoming increasingly stringent. Precise design is needed for the inner and outer oil grooves in critical areas where sealing rings are installed, requiring better sealing while ensuring structural strength. For shafts, the surface precision of groove machining is increasingly demanding, with specific requirements for post-machining dimensions. Existing machining methods use straight-edged inserts with a small rake angle. The rake face island is in the middle, causing chips to hit the island during cutting, resulting in chips spreading to both sides and damaging the wall surface. The straight cutting edges on both sides have high cutting resistance and lack chip-breaking function, causing surface damage due to chipping. This results in unstable cutting surface quality, low cutting speed, low cutting efficiency, and high replacement frequency. The V-shaped angle positioning of the insert and tool body leads to insecure clamping, making the insert prone to breakage during clamping. The insert is clamped by wedge force during machining, resulting in unstable machining dimensions and high tool costs. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model discloses a chip-breaking groove insert, applicable to CNC machine tools, comprising a lathe tool body, a main body clamped on the lathe tool body, two symmetrically distributed cutting portions on the first surface of the main body, chip-breaking islands on the cutting portions, an upper clamping and limiting groove on the main body, the upper clamping and limiting groove being located between the two cutting portions, the upper clamping and limiting groove being a V-shaped groove, and upper clamping positioning surfaces being respectively provided at both ends of the upper clamping and limiting groove.

[0004] Furthermore, the third chip-breaking island is in the form of a U-shaped groove, and the third chip-breaking island includes a first chip-breaking island and a second chip-breaking island, which are symmetrically distributed.

[0005] Furthermore, the cutting part includes a front cutting edge and two symmetrically distributed side cutting edges. The front cutting edge is located at the front end of the cutting part, and the front end of the cutting part has a spherical rake face design. The two side cutting edges are respectively located on both sides of the cutting part.

[0006] Furthermore, all the side cutting edges are designed with curves, and the front cutting edge is used in conjunction with the spherical rake face at the front end of the cutting part.

[0007] Furthermore, a lower positioning V-shaped limiting groove is provided on the second surface of the main body along the length direction of the main body, and a lower positioning surface is provided on both sides of the lower positioning V-shaped limiting groove.

[0008] The advantages of this utility model compared with the prior art are as follows: This utility model is used for cutting tools for installing seals or oil grooves on important shaft parts. It adopts a spherical curved surface design at the rake angle of the grooving insert, and the curved cutting edge reduces the cutting resistance of the tool; the specially designed chip-breaking islands improve the chip-breaking ability of the tool; by changing the cutting discharge direction through the chip-breaking islands, it facilitates chip breaking and obtains good machining surface quality; the chip-breaking grooving inserts can achieve high cutting parameter machining, resulting in high cutting efficiency; the tool life is long, greatly reducing the unit cost of the tool; and the tool inventory is reduced. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0010] Figure 2 This is a schematic diagram of the overall structure of this utility model from another angle.

[0011] Figure 3 This is a schematic diagram of the side cutting edge curve structure of this utility model.

[0012] Figure 4 This is a schematic diagram of the front cutting edge curve structure of this utility model.

[0013] Reference numerals: 1-Lower positioning surface; 2-Lower positioning V-shaped limiting groove; 3-Upper clamping positioning surface; 4-Upper clamping limiting groove; 5-Front cutting edge; 6-Side cutting edge; 7-Chip breaking island one; 8-Chip breaking island two; 9-Chip breaking island three; 10-Main body; 11-Cutting part. Detailed Implementation

[0014] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0015] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] Example: Figures 1-4 As shown, a chip-breaking groove insert, applied to a CNC machine tool, includes a lathe tool body, a main body 10 clamped on the lathe tool body, two symmetrically distributed cutting parts 11 are provided on the first surface of the main body 10, chip-breaking islands 9 are provided on the cutting parts 11, an upper clamping and limiting groove 4 is provided on the main body 10, the upper clamping and limiting groove 4 is located between the two cutting parts 11, the upper clamping and limiting groove 4 is a V-shaped groove, and upper clamping positioning surfaces 3 are respectively provided at both ends of the upper clamping and limiting groove 4. The upper pressure plate of the lathe tool body is assembled with the upper clamping positioning surface 3 and the upper clamping and limiting groove 4. A lower positioning V-shaped limiting groove 2 is provided on the second surface of the main body 10 along the length direction of the main body 10, and lower positioning surfaces 1 are provided on both sides of the lower positioning V-shaped limiting groove 2, the lower positioning surfaces 1 are in close contact with the positioning surfaces of the lathe tool body.

[0018] The cutting part 11 includes a front cutting edge 5 and two symmetrically distributed side cutting edges 6. The front cutting edge 5 is located at the front end of the cutting part 11, and the front end of the cutting part 11 has a spherical rake face design. The two side cutting edges 6 are respectively located on both sides of the cutting part 11, and both side cutting edges 6 have a curved design. The front cutting edge 5 intersects with the spherical rake face at the front end of the cutting part 11 to form a curved cutting edge, which has low cutting resistance and high surface finish. The chips are discharged towards the chip breaking island 3 9. The two side cutting edges 6 intersect with the spherical rake face at the front end of the cutting part 11 to form a curved large rake angle concave cutting edge. During the machining process, the side cutting force is divided into components, and then the chips are discharged towards the chip breaking island 3 9. The chip breaking island 3 9 forces the chips to curl and break, so as to achieve the required depth of cut in one pass.

[0019] The chip breaking island 3 9 has a U-shaped groove. The chip breaking island 3 9 includes chip breaking island 1 7 and chip breaking island 2 8. The chip breaking island 1 7 and chip breaking island 2 8 are symmetrically distributed. The chip breaking island 1 7 and chip breaking island 2 8 process the chips formed by the spherical rake face on the front end of the cutting edge 5 and the cutting part 11, so that the chips are scratched and the chips are forced to curl, thus achieving chip breaking.

[0020] Furthermore, it should be noted that the shapes and names of the parts and components described in the specific embodiments described in this specification may differ. All equivalent or simple variations made based on the concept, structure, features, and principles of this utility model patent are included within the protection scope of this utility model patent. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the structure of this utility model or exceed the scope defined in these claims, all of which should fall within the protection scope of this utility model.

Claims

1. A chip-breaking groove insert, used on a CNC machine tool, comprising a cutting tool body, wherein a holding body (10) is clamped on the cutting tool body, characterized in that: Two symmetrically distributed cutting parts (11) are provided on the first surface of the main body (10). Chip breaking islands (9) are provided on the cutting parts (11). An upper clamping and limiting groove (4) is provided on the main body (10). The upper clamping and limiting groove (4) is located between the two cutting parts (11). The upper clamping and limiting groove (4) is a V-shaped groove. Upper clamping and positioning surfaces (3) are provided at both ends of the upper clamping and limiting groove (4).

2. The chip-distributing groove blade as described in claim 1, characterized in that: The chip island three (9) is U-shaped groove. The chip island three (9) includes chip island one (7) and chip island two (8), and chip island one (7) and chip island two (8) are symmetrically distributed.

3. The chip-distributing groove blade as described in claim 2, characterized in that: The cutting part (11) includes a front cutting edge (5) and two symmetrically distributed side cutting edges (6). The front cutting edge (5) is located at the front end of the cutting part (11), and the front end of the cutting part (11) has a spherical rake face design. The two side cutting edges (6) are respectively located on both sides of the cutting part (11).

4. The chip-distributing groove blade as described in claim 3, characterized in that: The side cutting edges (6) are all designed with curves, and the front cutting edge (5) is used in conjunction with the spherical rake face at the front end of the cutting part (11).

5. A chip-distributing groove blade as described in claim 4, characterized in that: A lower positioning V-shaped limiting groove (2) is provided on the second surface of the main body (10) along the length direction of the main body (10), and a lower positioning surface (1) is provided on both sides of the lower positioning V-shaped limiting groove (2).

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