A slotting and cross turning insert

Abstract

The application discloses a kind of slotting and transverse turning blade, belong to cutting machining technical field, including positioning handle and cutting head portion;Cutting head portion includes main cutting edge relief, two auxiliary cutting edge relief and rake face, main cutting edge relief and rake face between being provided with main cutting edge land, two auxiliary cutting edge relief and rake face between being provided with auxiliary cutting edge land, main cutting edge land and auxiliary cutting edge land between being respectively provided with the arc-shaped land of transition use;The blade provided in the application adjusts the width of main cutting edge land, auxiliary cutting edge land and arc-shaped land and constitutes the smooth land structure of edge together, the land of the main cutting edge land of this structure is narrow in the middle, the land of arc cutting edge land is widest, strengthen the strength of arc cutting edge land, also guarantee the sharpness of main cutting edge land, can be applicable to the poor rigidity and relatively harsh processing environment.

Description

Technical Field

[0001] This invention belongs to the field of cutting technology, specifically a grooving and transverse turning insert. Background Technology

[0002] As a commonly used tool in industrial cutting, ensuring cutting efficiency and quality is paramount for cutting inserts. Therefore, chip control is crucial during machining. If chips are not curled, broken, and expelled, they will become entangled on the workpiece and tool surfaces, forcing a halt to machining for chip removal, interrupting continuous processing, and significantly reducing efficiency. Entangled chips not only affect machining efficiency but also degrade workpiece surface quality if they collide with machined surfaces. If they collide with the insert cutting edge, the sudden change in force can damage the cutting edge structure, drastically reducing its lifespan and increasing machining costs. Changes in the cutting edge structure can also cause machining vibration, which is detrimental to ensuring surface quality and insert lifespan. In industrial cutting, grooving is often accompanied by a small amount of transverse turning, making the cutting edge structure and chip breaking mechanism key design considerations for inserts. Summary of the Invention

[0003] The purpose of this invention is to provide a grooving and transverse turning insert, which solves the problems of easy damage to the cutting edge structure and unstable structural state during operation of the existing grooving and transverse turning inserts by precisely controlling the structure of each part of the insert.

[0004] A grooving and transverse turning insert is provided, comprising:

[0005] A positioning shank, which extends longitudinally along the cutting head;

[0006] The cutting head includes a main cutting edge flank face, two secondary cutting edge flank faces, and a rake face. A main cutting edge band is provided between the main cutting edge flank face and the rake face. Secondary cutting edge bands are respectively provided between the two secondary cutting edge flank faces and the rake face. A transition arc-shaped cutting edge band is respectively provided between the main cutting edge band and the two secondary cutting edge bands.

[0007] The width of the arc-shaped cutting edge is greater than that of the main cutting edge and the two secondary cutting edges. The width of the main cutting edge gradually increases from the middle to both ends, while the width of the secondary cutting edges gradually decreases along the direction of the positioning shank.

[0008] As a further aspect of the present invention: the width of the arc-shaped cutting edge is 0.08mm to 0.15mm, the width of the main cutting edge is 0.04mm to 0.08mm, and the width of the secondary cutting edge is 0.08mm to 0.12mm.

[0009] As a further aspect of the present invention: the angle between the main cutting edge and the secondary cutting edge and the horizontal plane is α, and the angle α is 2° to 5°.

[0010] As a further aspect of the present invention: the main cutting edge and the rake face are connected by a first inclined plane, and the secondary cutting edge and the rake face are connected by a second inclined plane. The angle between the first and second inclined planes and the horizontal plane is β, and the angle β is 13° to 17°.

[0011] As a further aspect of the present invention: the rake face includes two first protrusions and a second protrusion, the two first protrusions are symmetrically arranged along the longitudinal direction of the cutting head, the second protrusion is located on the line of symmetry of the first protrusion, and the secondary cutting edge flank face is connected to the first protrusion by a second inclined surface.

[0012] As a further aspect of the present invention: a first pit and a second pit are formed between the two first protrusions, the second protrusion, and the first inclined surface, wherein the first pit is located between the first inclined surface and the second pit.

[0013] As a further aspect of the present invention: the cutting edge of the main cutting edge band is the main cutting edge, and the cutting edge of the secondary cutting edge band is the secondary cutting edge. The secondary cutting edge has two bends along its length. The angle between the bend near the main cutting edge and the horizontal plane is γ, and the angle γ is 1.5° to 3.5°. The angle between the bend away from the main cutting edge and the horizontal plane is δ, and the angle δ is 4.5° to 7.5°.

[0014] As a further aspect of the present invention, the height dimension of the main cutting edge is 0mm to 0.12mm larger than the height dimension of the secondary cutting edge.

[0015] As a further aspect of the present invention: the height of the first protrusion is 0.01 mm to 0.10 mm larger than the height of the main cutting edge, and the height of the first protrusion is 0.03 mm to 0.15 mm larger than the height of the secondary cutting edge.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] The blade provided by this invention adjusts the width of the main cutting edge band, the secondary cutting edge band, and the arc-shaped cutting edge band to form a smooth cutting edge area structure. The main cutting edge band is narrowest in the middle and widest at the arc-shaped cutting edge band, which strengthens the arc-shaped cutting edge band and ensures the sharpness of the main cutting edge band. It can be used in machining environments with poor rigidity and relatively harsh conditions. Attached Figure Description

[0018] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 A schematic diagram of the overall structure of a grooving and transverse turning insert;

[0020] Figure 2 A top view of a grooving and transverse turning insert;

[0021] Figure 3 for Figure 2 Schematic diagram of the cross section of AA;

[0022] Figure 4 for Figure 2 A schematic diagram of the cross-section of BB;

[0023] Figure 5 A side view of a grooving and transverse turning insert.

[0024] In the figure: 1. Cutting head; 2. Secondary cutting edge (a, b); 3. First protrusion (a, b); 4. Secondary cutting edge band (a, b); 5. Secondary bevel (a, b); 6. Rake face of secondary cutting edge (a, b); 8. Secondary protrusion; 9. Rake face; 91. Secondary recess; 10. Arc-shaped cutting edge band (a, b); 12. Rake face of primary cutting edge; 13. Primary cutting edge; 14. First recess; 15. Primary cutting edge band; 16. First bevel; 17. Positioning shank. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0027] Please see Figure 1-5As shown, in this embodiment of the invention, a positioning shank 17 and a cutting head 1 are included. The positioning shank 17 extends longitudinally along the cutting head 1. The cutting head 1 includes a main cutting edge flank face 12, a secondary cutting edge flank face 6a, a secondary cutting edge flank face 6b, and a rake face 9. A main cutting edge band 15 is provided between the main cutting edge flank face 12 and the rake face 9. Secondary cutting edge bands 4a and 4b are provided between the secondary cutting edge flank faces 6a and 6b and the rake face 9. Arc-shaped transition bands 10a and 10b are respectively provided between the main cutting edge band 15 and the secondary cutting edge bands 4a and 4b. The width of the arc-shaped bands 10a and 10b is greater than that of the main cutting edge band 15 and the secondary cutting edge bands 4a and 4b. The width of the main cutting edge band 15 gradually increases from the middle to both ends, and the width of the secondary cutting edge bands 4a and 4b gradually decreases along the direction of the positioning shank 17.

[0028] Specifically, please refer to Figure 1 and Figure 2 As shown, the arc-shaped cutting edges 10a and 10b are the widest of all the cutting edges, with a width of 0.08mm to 0.15mm. This strengthens the arc-shaped cutting edges 10a and 10b, enhances the stability of the cutting edge, and makes it less prone to chipping during use. The main cutting edge 15 is the narrowest at the longitudinal center of the blade, gradually widening towards both ends, with a width of 0.04mm to 0.08mm. This ensures the sharpness of the main cutting edge 15, and the arc-shaped cutting edges 10a and 10b at both ends enhance the structural stability. The secondary cutting edges 4a and 4b have a width of 0.08mm to 0.12mm. The secondary cutting edges 4a and 4b extend to the positioning shank 17. The width near the arc-shaped cutting edges 10a and 10b is appropriately widened, while the width near the positioning shank 17 is reduced, ensuring the strength of the front end while maintaining the sharpness of the middle and rear sections.

[0029] Please see Figure 1 , Figure 3 and Figure 4 As shown, the main cutting edge 15 and the secondary cutting edge 4a, 4b form an angle α with the horizontal plane, and the angle α is 2° to 5°. The main cutting edge 15 and the rake face 9 are connected by a first inclined plane 16, and the secondary cutting edge 4a, 4b and the rake face 9 are connected by a second inclined plane 5a, 5b. The first inclined plane 16 and the second inclined plane 5a, 5b form an angle β with the horizontal plane, and the angle β is 13° to 17°.

[0030] This design gives the insert a double positive rake angle. The smaller rake angle of the cutting edge results in higher cutting edge strength, while the larger second rake angle makes the insert sharper. This reduces frictional resistance during cutting and minimizes vibration during the machining process.

[0031] The rake face 9 includes first protrusions 3a and 3b and a second protrusion 8. The first protrusions 3a and 3b are arranged along the longitudinal direction of the insert and have a tapered transition structure around them. The taper of the sides of the first protrusions 3a and 3b causes the chips to curl upwards and break during cutting, forming relatively regular chip breaks, which is convenient for automated machining. The first protrusions 3a and 3b are symmetrically arranged along the longitudinal direction of the cutting head. The second protrusion 8 is located on the line of symmetry of the first protrusions 3a and 3b. The secondary cutting edge flank faces 6a and 6b are connected to the first protrusions 3a and 3b by second inclined surfaces 5a and 5b.

[0032] A first recess 14 and a second recess 91 are formed between the first protrusion 3a, the first protrusion 3b, the second protrusion 8, and the first inclined surface 16. A second recess 91 is formed between the first protrusions 3a and 3b on both sides and the second protrusion 8. A first recess 14 is formed between the first protrusions 3a and 3b on both sides and the first inclined surface 16. The first recess 14 and the second recess 91 combine to form the largest recess on the rake face 9. During grooving, the first protrusions 3a and 3b cause the chips to curl upwards and inwards and break off. The first recess 14 and the second recess 91 can accommodate the curled iron chips and can also appropriately store coolant, reducing the temperature during cutting and improving chip control.

[0033] The cutting edge of the main cutting edge band 15 is the main cutting edge 13, and the cutting edges of the secondary cutting edge bands 4a and 4b are the secondary cutting edges 2a and 2b. During transverse turning, the secondary cutting edges 2a and 2b guide the chips to the second inclined surfaces 5a and 5b at different depths of cut. The chips collide with the first protrusions 3a and 3b along the second inclined surfaces 5a and 5b. The taper of the sides of the first protrusions 3a and 3b causes the chips to curl and break upwards, forming relatively regular broken chips, which is convenient for automated machining.

[0034] Please see Figure 5 As shown, the secondary cutting edges 2a and 2b have two bends along their length. The bend near the main cutting edge 13 has an angle γ with the horizontal plane, which is 1.5° to 3.5°. This angle is relatively gentle to prevent the main cutting edge 13 from weakening due to rapid dimensional changes between it and the secondary cutting edges 2a and 2b. The bend away from the main cutting edge 13 has an angle δ with the horizontal plane, which is 4.5° to 7.5°. This section can quickly reduce the height of the secondary cutting edges 2a and 2b, facilitating the guidance of chips to the second inclined surfaces 5a and 5b at different depths of cut.

[0035] Furthermore, it is necessary to control the height of the main cutting edge 13 and the secondary cutting edges 2a and 2b. The height of the first protrusions 3a and 3b is 0.01mm to 0.10mm larger than the height of the main cutting edge 13, and the height of the first protrusions 3a and 3b is 0.03mm to 0.15mm larger than the height of the secondary cutting edges 2a and 2b. This setting facilitates the guidance of chips to the first protrusions 3a and 3b, and adapts to the dimensional requirements of the cutting groove of the insert.

[0036] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A grooving and transverse turning insert, characterized in that, include: Positioning shank (17), which extends longitudinally along the cutting head (1); The cutting head (1) includes a main cutting edge flank face (12), a secondary cutting edge flank face (6a, 6b) and a rake face (9). A main cutting edge band (15) is provided between the main cutting edge flank face (12) and the rake face (9). A secondary cutting edge band (4a, 4b) is provided between the secondary cutting edge flank face (6a, 6b) and the rake face (9). A transition arc-shaped cutting edge band (10a, 10b) is provided between the main cutting edge band (15) and the secondary cutting edge band (4a, 4b). The width of the arc-shaped cutting edge (10a, 10b) is greater than that of the main cutting edge (15) and the secondary cutting edge (4a, 4b). The width of the main cutting edge (15) gradually increases from the middle to both ends, and the width of the secondary cutting edge (4a, 4b) gradually decreases along the direction of the positioning shank (17). The arc-shaped cutting edge (10a, 10b) has a width of 0.08mm to 0.15mm, the main cutting edge (15) has a width of 0.04mm to 0.08mm, the secondary cutting edge (4a, 4b) has a width of 0.08mm to 0.12mm, the main cutting edge (15) and the secondary cutting edge (4a, 4b) have an angle of α with the horizontal plane and the angle of α is 2° to 5°, the main cutting edge (15) and the rake face (9) are connected by a first inclined plane (16), the secondary cutting edge (4a, 4b) and the rake face (9) are connected by a second inclined plane (5a, 5b), the first inclined plane (16) and the second inclined plane (5a, 5b) have an angle of β with the horizontal plane and the angle of β is 13° to 17°; The rake face (9) includes a first protrusion (3a, 3b) and a second protrusion (8). The first protrusion (3a, 3b) is arranged symmetrically along the longitudinal direction of the cutting head, and the second protrusion (8) is located on the line of symmetry of the first protrusion (3a, 3b). The secondary cutting edge flank face (6a, 6b) and the first protrusion (3a, 3b) are connected by a second inclined surface (5a, 5b).

2. The grooving and transverse turning insert according to claim 1, characterized in that, A first pit (14) and a second pit (91) are formed between the first protrusion (3a, 3b), the second protrusion (8) and the first inclined surface (16), with the first pit (14) located between the first inclined surface (16) and the second pit (91).

3. A grooving and transverse turning insert according to claim 2, characterized in that, The cutting edge of the main cutting edge band (15) is the main cutting edge (13), and the cutting edge of the secondary cutting edge band (4a, 4b) is the secondary cutting edge (2a, 2b). The secondary cutting edge (2a, 2b) has two bends in the length direction. The bend near the main cutting edge (13) has an angle of γ with the horizontal plane, and the angle of γ is 1.5°~3.5°. The bend away from the main cutting edge (13) has an angle of δ with the horizontal plane, and the angle of δ is 4.5°~7.5°.

4. A grooving and transverse turning insert according to claim 3, characterized in that, The height dimension of the main cutting edge (13) is 0 mm to 0.12 mm larger than the height dimension of the secondary cutting edges (2a, 2b).

5. A grooving and transverse turning insert according to claim 3, characterized in that, The height of the first protrusion (3a, 3b) is 0.01mm to 0.10mm larger than the height of the main cutting edge (13), and the height of the first protrusion (3a, 3b) is 0.03mm to 0.15mm larger than the height of the secondary cutting edge (2a, 2b).

Images