Cutter for cutting machining

Abstract

The utility model provides a cutting tool which comprises a tool handle and a tool bit arranged at the end of the tool handle, a movable positioning plate and a movable wing plate are arranged on the tool bit, an installation groove used for containing a blade is formed between the movable positioning plate and the movable wing plate, and a base plate placed in the installation groove is arranged at the lower end of the blade. The blade is composed of four cutting units, each cutting unit comprises an upper surface, a lower surface and two side faces connected with the upper surface and the lower surface, and every two adjacent side faces are connected through a cylindrical face to form a tool nose vertex angle. The movable positioning plate and the movable wing plate are detachably arranged on the cutter head, so that when the blade needs to be replaced, only the movable positioning plate and the movable wing plate matched with the blade need to be replaced, the whole cutter does not need to be replaced, and the blade is composed of four cutting units. When one cutting unit is worn, the other cutting unit can be used for cutting, so that the service life of one blade is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of metal cutting tools, in particular to a cutting tool. Background Art

[0002] Cutting tools are tools used for cutting processing in the field of machine tools. In the prior art, the positioning seat in the tool and the wing plate for fixing the tool head are generally fixed. When the blade of different specifications needs to be replaced, the tool handle needs to be replaced at the same time, which increases the processing cost.

[0003] Chips are usually generated during the cutting of metal parts, and long chips are generated when cutting tough materials. These chips constantly hit and entangle the cutter body and blade, causing uneven force on each point on the blade surface during processing, which is very likely to cause edge chipping and increase the tool loss cost. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a cutting tool for solving the problems of high cost and poor chip removal of cutting tools in the prior art.

[0005] In order to achieve the above purpose and other related purposes, the utility model provides the following technical solutions:

[0006] A tool for cutting processing, comprising a tool handle, a tool head arranged at the end of the tool handle, a movable positioning plate and a movable wing plate being provided on the tool head, a mounting groove for placing a blade being formed between the movable positioning plate and the movable wing plate, a pad placed in the mounting groove being provided at the lower end of the blade; the blade is composed of four cutting units, the cutting unit comprising an upper surface, a lower surface and two side surfaces connecting the upper surface and the lower surface, two adjacent side surfaces being connected by a cylindrical surface to form a tool tip apex angle; the side surfaces intersect with the upper surface to form two main cutting edges, and the cylindrical surface intersects with the upper surface to form an arc cutting edge.

[0007] To implement the above technical solution, the movable positioning plate and the movable wing plate described in the present application are both detachably arranged on the cutter head. Therefore, when the blade needs to be replaced, it is only necessary to replace the movable positioning plate and the movable wing plate that match the blade, without replacing the entire tool, thereby saving costs. In the present application, the blade is composed of four cutting units. When one cutting unit is worn, the blade can be rotated and another cutting unit can be used for cutting, thereby increasing the service life of a blade.

[0008] In one embodiment of the utility model, the upper surface is provided with a main chip breaker groove corresponding to the main cutting edge, and the upper surface is provided with an arc chip breaker groove corresponding to the arc cutting edge. The main chip breaker groove and the arc chip breaker groove are smoothly connected to form a chip breaking surface.

[0009] By implementing the above technical solution, the main chip breaker groove and the arc chip breaker groove can accommodate more cutting fluid so that the cutting fluid can fully contact the workpiece and the blade, which is beneficial to reduce cutting heat and reduce the friction between the cutting and the main cutting edge and the arc cutting edge, thereby further slowing down the wear of the blade and increasing the service life of the blade.

[0010] In one embodiment of the present invention, a main cutting edge band and a circular cutting edge band are respectively provided on the upper surface adjacent to the main cutting edge and the circular cutting edge, and the main cutting edge band and the circular cutting edge band are smoothly connected.

[0011] To implement the above technical solution, the widths of the main cutting edge band and the arc cutting edge band are preferably the same. The provision of the main cutting edge band and the arc cutting edge band can further improve the wear resistance of the boundary between the main cutting edge and the arc cutting edge.

[0012] In one embodiment of the utility model, the main chip breaker groove and the arc chip breaker groove together enclose an outwardly protruding chip control boss, and a mounting hole is provided in the middle of the chip control boss.

[0013] To implement the above technical solution, the mounting hole is used to install a fastening screw, the fastening screw passes through a pad and is installed on the cutter head. Through the setting of the chip control boss, the cutting generated by the main cutting edge and the arc cutting edge can be guided to form a curling flow, thereby reducing the extrusion resistance between the chip control boss and the cutting heat, thereby improving the service life of the blade.

[0014] In an embodiment of the present invention, the chip control boss has a chip control portion extending along the main cutting edge direction.

[0015] To implement the above technical solution, the chip control part is arranged to protrude outward, and when the cutting material hits the chip control part, the cutting material can be knocked off to prevent splashing and fall in a predetermined arc.

[0016] In an embodiment of the present invention, an end portion of the cutter head is provided with an arc-shaped first chip removal groove and a second chip removal groove.

[0017] By implementing the above technical solution, the first chip groove and the second chip groove are provided to guide and direct the cutting.

[0018] In one embodiment of the present invention, the movable positioning plate, the movable wing plate and the blade are all mounted on the cutter head by fastening screws.

[0019] To implement the above technical solution, the arrangement of the fastening screws facilitates the assembly and disassembly of the movable positioning plate, the movable wing plate and the blade.

[0020] In one embodiment of the present invention, two movable wing plates are provided and abut against the side surface of the cutting unit at the front end, and the two movable wing plates together form a receiving groove for the blade to extend out.

[0021] To implement the above technical solution, the movable wing plate is used to position the blade, and the accommodating groove is used to extend one end of the blade that needs to be cut.

[0022] In an embodiment of the present invention, a positioning groove for the tail of the blade to be placed is formed on the movable positioning plate.

[0023] To implement the above technical solution, the positioning groove is used to clamp the tail of the blade, and can work together with the movable wing plate to press the blade to prevent the cutter head from loosening or rotating under the action of cutting force.

[0024] As described above, a cutting tool of the utility model has the following beneficial effects: the movable positioning plate and the movable wing plate described in the present application are both detachably arranged on the cutter head, so when the blade needs to be replaced, only the movable positioning plate and the movable wing plate that match the blade need to be replaced, and there is no need to replace the entire tool, which saves costs, and the blade in the present application is composed of four cutting units. When one cutting unit is worn, the blade can be rotated and another cutting unit can be used for cutting, thereby increasing the service life of a blade; the main chip breaker groove and the circular arc chip breaker groove can accommodate more chip fluid so that the cutting fluid is in full contact with the workpiece and the blade, which is beneficial to reduce cutting heat and reduce the friction between the cutting and the main cutting edge and the circular arc cutting edge, thereby further slowing down the wear of the blade and increasing the service life of the blade; the setting of the main cutting edge band and the circular arc cutting edge band can further improve the boundary wear resistance of the main cutting edge and the circular arc cutting edge; the setting of the chip control boss can guide the cutting generated by the main cutting edge and the circular arc cutting edge to form a curled flow, reduce the extrusion resistance between the chip control boss, reduce cutting heat, and thus increase the service life of the blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Shown is a schematic diagram of the structure of the utility model.

[0026] Figure 2 Shown is an exploded view of the present invention.

[0027] Figure 3 Shown is a schematic diagram of the structure of the blade.

[0028] Component number description

[0029] 1. Tool handle; 2. Tool head; 3. Movable positioning plate; 4. Movable wing plate; 5. Blade; 6. Mounting groove; 7. Pad; 8. Side; 9. Cylindrical surface; 10. Main cutting edge; 11. Arc cutting edge; 12. Main chip breaker groove; 13. Arc chip breaker groove; 14. Main cutting edge band; 15. Arc cutting edge band; 16. Chip control boss; 17. Mounting hole; 18. Chip control part; 19. First chip removal groove; 20. Second chip removal groove; 21. Fastening screw; 22. Receiving groove; 23. Positioning groove. DETAILED DESCRIPTION

[0030] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0031] See also Figure 1-3 The utility model provides a cutting tool, comprising a tool handle 1, a tool head 2 arranged at the end of the tool handle 1, a movable positioning plate 3 and a movable wing plate 4 are provided on the tool head 2, a mounting groove 6 for placing a blade 5 is formed between the movable positioning plate 3 and the movable wing plate 4, and a pad 7 placed in the mounting groove 6 is provided at the lower end of the blade 5; the blade 5 is composed of four cutting units, and the cutting unit includes an upper surface, a lower surface and two side surfaces 8 connecting the upper surface and the lower surface, and two adjacent side surfaces 8 are connected by a cylindrical surface 9 to form a tool tip apex angle; the side surface 8 intersects with the upper surface to form two main cutting edges 10, and the cylindrical surface 9 intersects with the upper surface to form a circular arc cutting edge 11.

[0032] The movable positioning plate 3 and the movable wing plate 4 described in the present application are both detachably arranged on the cutter head 2. Therefore, when the blade 5 needs to be replaced, it is only necessary to replace the movable positioning plate 3 and the movable wing plate 4 that are compatible with the blade 5. There is no need to replace the entire tool, which saves costs. In the present application, the blade 5 is composed of four cutting units. When one cutting unit is worn, the blade 5 can be rotated and another cutting unit can be used for cutting, which increases the service life of one blade 5.

[0033] The upper surface is provided with a main chip breaker 12 corresponding to the main cutting edge 10, and the upper surface is provided with a circular chip breaker 13 corresponding to the arc cutting edge 11. The main chip breaker 12 and the circular chip breaker 13 are smoothly connected to form a chip breaking surface. The main chip breaker 12 and the circular chip breaker 13 can accommodate more chip fluid so that the cutting fluid is fully in contact with the workpiece and the blade 5, which is beneficial to reduce cutting heat and reduce the friction between the cutting and the main cutting edge 10 and the circular cutting edge 11, thereby further slowing down the wear of the blade 5 and increasing the service life of the blade 5.

[0034] A main cutting edge 10 band and a circular cutting edge 11 band are respectively arranged on the upper surface adjacent to the main cutting edge 10 and the circular cutting edge 11, and the main cutting edge 10 band and the circular cutting edge 11 band are smoothly connected. The widths of the main cutting edge 10 band and the circular cutting edge 11 band are preferably the same, and the provision of the main cutting edge 10 band and the circular cutting edge 11 band can further improve the boundary wear resistance of the main cutting edge 10 and the circular cutting edge 11.

[0035] The main chip breaker groove 12 and the arc chip breaker groove 13 are enclosed together to form an outwardly protruding chip control boss 16, and a mounting hole 17 is provided in the middle of the chip control boss 16. The mounting hole 17 is used to install a fastening screw 21, and the fastening screw 21 passes through the backing plate 7 and is installed on the cutter head 2. The chip control boss 16 can guide the cutting generated by the main cutting edge 10 and the arc cutting edge 11 to form a curling flow, reduce the extrusion resistance between the chip control boss 16, reduce the cutting heat, and thus increase the service life of the blade 5.

[0036] The chip control boss 16 is provided with a chip control portion 18 extending along the direction of the main cutting edge 10. The chip control portion 18 is provided as an outward protrusion, and when the cutting material hits the chip control portion 18, the cutting material can be knocked off to prevent splashing and fall in a predetermined arc.

[0037] The end of the cutter head 2 is provided with an arc-shaped first chip groove 19 and a second chip groove 20. The first chip groove 19 and the second chip groove 20 can guide and direct the cutting. The movable positioning plate 3, the movable wing plate 4 and the blade 5 are all mounted on the cutter head 2 by means of a fastening screw 21. The fastening screw 21 facilitates the disassembly and assembly of the movable positioning plate 3, the movable wing plate 4 and the blade 5.

[0038] The movable wing plates 4 are provided with two and are in contact with the side surface 8 of the cutting unit at the front end, and the two movable wing plates 4 together form a receiving groove 22 for the blade 5 to extend out. The movable wing plates 4 are used to position the blade 5, and the receiving groove 22 is used to extend one end of the blade 5 that needs to be cut.

[0039] The movable positioning plate 3 is provided with a positioning groove 23 for the tail of the blade 5 to be placed. The positioning groove 23 is used to clamp the tail of the blade 5, and can press the blade 5 together with the movable wing plate 4 to prevent the cutter head 2 from loosening or rotating under the action of the cutting force.

[0040] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. All equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A cutting tool, comprising a tool handle (1) and a tool head (2) arranged at the end of the tool handle (1), characterized in that: The cutter head (2) is provided with a movable positioning plate (3) and a movable wing plate (4), a mounting groove (6) for placing a blade (5) is formed between the movable positioning plate (3) and the movable wing plate (4), and a pad (7) placed in the mounting groove (6) is provided at the lower end of the blade (5); The blade (5) is composed of four cutting units, each of which comprises an upper surface, a lower surface, and two side surfaces (8) connecting the upper surface and the lower surface, and two adjacent side surfaces (8) are connected by a cylindrical surface (9) to form a blade tip apex angle; The side surface (8) intersects with the upper surface to form two main cutting edges (10), and the cylindrical surface (9) intersects with the upper surface to form an arc cutting edge (11).

2. A cutting tool according to claim 1, characterized in that: The upper surface is provided with a main chip breaker groove (12) corresponding to the main cutting edge (10), and the upper surface is provided with a circular chip breaker groove (13) corresponding to the circular arc cutting edge (11); the main chip breaker groove (12) and the circular arc chip breaker groove (13) are smoothly connected to form a chip breaking surface.

3. A cutting tool according to claim 1, characterized in that: A main cutting edge (10) band and a circular arc cutting edge (11) band are respectively provided on the upper surface adjacent to the main cutting edge (10) and the circular arc cutting edge (11); the main cutting edge (10) band and the circular arc cutting edge (11) band are smoothly connected.

4. A cutting tool according to claim 2, characterized in that: The main chip breaker groove (12) and the arc chip breaker groove (13) together enclose an outwardly protruding chip control boss (16), and a mounting hole (17) is provided in the middle of the chip control boss (16).

5. A cutting tool according to claim 4, characterized in that: The chip control boss (16) is provided with a chip control portion (18) extending along the direction of the main cutting edge (10).

6. A cutting tool according to claim 1, characterized in that: The end of the cutter head (2) is provided with an arc-shaped first chip removal groove (19) and a second chip removal groove (20).

7. A cutting tool according to claim 1, characterized in that: The movable positioning plate (3), the movable wing plate (4) and the blade (5) are all mounted on the cutter head (2) via fastening screws (21).

8. A cutting tool according to claim 1, characterized in that: Two movable wing plates (4) are provided and are in contact with the side surface (8) of the cutting unit at the front end. The two movable wing plates (4) together form a receiving groove (22) for the blade (5) to extend out.

9. A cutting tool according to claim 1, characterized in that: The movable positioning plate (3) is provided with a positioning groove (23) for the tail of the blade (5) to be placed.

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