Rough machining milling cutter with chip breaker grooves

Abstract

The utility model discloses a rough machining milling cutter with chip breaker grooves, which relates to the technical field of milling cutters and comprises a cutter bar, a cutter head is arranged at one end of the cutter bar, a plurality of spiral blades are arranged on the outer surface of the cutter head, a chip guide groove is arranged at the top of the outer surface of the cutter head, and a chip discharge groove is arranged between two adjacent blades. The inner wall of the chip groove is provided with a plurality of triangular chip guiding grooves which are concave inwards, and the inner walls of the triangular chip guiding grooves are provided with chip breaking grooves; through the design of the triangular chip guiding groove and the chip breaking groove, the triangular chip guiding groove can play a role in guiding cutting chips, so that the cutting chips are guided into the chip breaking groove, the chip breaking groove can cut long cutting chips into short small cutting chips, and the overall chip breaking capacity is improved; the situation that the long cutting tool is wound on the surface of the milling cutter to scratch the surface of the workpiece and affect the machining quality of the surface of the workpiece is avoided, and the situation that the wound long cutting tool damages the milling cutter is also avoided.

Description

A roughing end mill with chip breaker groove Technical Field

[0001] This utility model relates to the field of milling cutter technology, specifically a roughing milling cutter with chip breaking grooves. Background Technology

[0002] Milling cutters are cutting tools commonly used on milling machines or machining centers to perform milling operations (and sometimes on other machine tools). They remove material by means of a fixed feed rate within the machine. Milling often presents challenges in chip breaking during the machining process; chips can easily become entangled on the milling cutter, potentially scratching the workpiece surface and affecting the quality of the machined surface, as well as reducing tool life. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model provides a roughing milling cutter with chip breaking grooves.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] This utility model discloses a roughing milling cutter with chip breaking groove, including a cutter shank, one end of which is provided with a cutter head, the outer surface of which is provided with multiple helical cutting edges, the top of the outer surface of which is provided with a chip guide groove, and a chip discharge groove is provided between two adjacent cutting edges. The inner wall of the chip discharge groove is provided with multiple inwardly recessed triangular chip guide grooves, and the inner wall of the triangular chip guide grooves is provided with chip breaking grooves.

[0006] As a preferred embodiment of this utility model, the roughing milling cutter also includes a tool holder located at the other end of the tool holder.

[0007] As a preferred embodiment of this utility model, one end of the knife handle is connected to one end of the knife bar via a positioning and detachable connector.

[0008] As a preferred technical solution of this utility model, the positioning and disassembly connector includes a rectangular positioning insertion groove at one end of the tool handle, and a positioning insertion block at one end of the tool bar that matches and inserts into the positioning insertion groove.

[0009] As a preferred embodiment of this utility model, the inner wall of the positioning insertion groove is provided with an extension connecting groove, and the end of the positioning insertion block away from the knife bar is provided with an extension connecting rod that matches the extension connecting groove.

[0010] As a preferred embodiment of this utility model, each outer wall of the positioning plug-in block is provided with a wedge-shaped groove, an adjusting locking screw is threaded onto the handle, the inner end of the adjusting locking screw is connected to a wedge-shaped block that matches the wedge-shaped groove via a bearing, the outer end of the adjusting locking screw is provided with a rotating wheel, and the inner wall of the positioning plug-in groove is provided with a storage groove that matches the wedge-shaped block.

[0011] As a preferred technical solution of this utility model, a rectangular connector is provided at the end of the tool holder away from the positioning insertion groove, and two connection holes are provided on the connector.

[0012] The beneficial effects of this utility model are:

[0013] 1. This type of roughing milling cutter with chip breaker groove guides the cutting chips into the chip breaker groove through the chip guide groove. The chip breaker groove removes the cutting chips. The triangular chip guide groove guides the cutting chips into the chip breaker groove, which cuts long chips into shorter pieces, improving the overall chip breaking capability. This prevents long chips from wrapping around the milling cutter surface and scratching the workpiece surface, affecting the workpiece surface finish, and also prevents long chips from damaging the milling cutter.

[0014] 2. This type of roughing milling cutter with chip breaking groove, when fixing the tool holder and tool shank, ensures that the extension connecting rod matches the extension connecting groove and the positioning plug matches the positioning plug groove, enabling rapid positioning. The rectangular design prevents relative rotation. Rotating the wheel drives the adjusting locking screw to rotate, and the adjusting locking screw is threaded to the tool shank, causing the wedge block to move along the receiving groove. This allows the wedge block to enter the wedge groove and fix and tighten the positioning plug. The four sides of the positioning plug can be tightened, resulting in higher connection stability between the tool shank and tool shank. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 is a structural schematic diagram of a roughing milling cutter with chip breaking groove according to the present invention;

[0017] Figure 2 is a cross-sectional view of the connection between the chip breaker groove and the triangular chip guide groove of a roughing milling cutter with chip breaker groove according to the present invention.

[0018] Figure 3 is a schematic diagram of the tool holder structure of a roughing milling cutter with chip breaking groove according to this utility model;

[0019] Figure 4 is a schematic diagram of the tool holder structure of a roughing milling cutter with chip breaking groove according to this utility model;

[0020] Figure 5 is a cross-sectional view of the shank of a roughing milling cutter with chip breaking groove according to this utility model.

[0021] In the diagram: 1. Tool holder; 2. Tool head; 3. Cutting edge; 4. Chip guide groove; 5. Chip removal groove; 6. Triangular chip guide groove; 7. Chip breaking groove; 8. Tool shank; 9. Positioning and easy-to-disassemble connector; 10. Positioning insertion groove; 11. Positioning insertion block; 12. Extension connection groove; 13. Extension connection rod; 14. Wedge groove; 15. Adjusting locking screw; 16. Wedge block; 17. Rotary wheel; 18. Connector; 19. Connecting hole; 20. Storage groove. Detailed Implementation

[0022] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0023] Example: As shown in Figures 1 and 2, this utility model discloses a roughing milling cutter with chip breaking grooves, including a cutter shank 1. One end of the cutter shank 1 is provided with a cutter head 2. The outer surface of the cutter head 2 is provided with multiple helical cutting edges 3. The top of the outer surface of the cutter head 2 is provided with a chip guide groove 4. A chip removal groove 5 is provided between two adjacent cutting edges 3. The inner wall of the chip removal groove 5 is provided with multiple inwardly recessed triangular chip guide grooves 6. The inner wall of the triangular chip guide grooves 6 is provided with chip breaking grooves 7. The chip guide grooves 4 can guide the cutting chips into the interior of the chip removal grooves 5. The chip removal grooves 5 can remove the cutting chips. The design of the triangular chip guide grooves 6 and the chip breaking grooves 7 allows the triangular chip guide grooves 6 to guide the cutting chips into the interior of the chip breaking grooves 7. The chip breaking grooves 7 can cut long chips into shorter small chips, improving the overall chip breaking capability and preventing long chips from wrapping around the surface of the milling cutter and scratching the workpiece surface, affecting the surface machining quality of the workpiece. It also prevents the long chips from wrapping around and damaging the milling cutter.

[0024] Specifically, as shown in Figures 1, 3, 4, and 5, the roughing milling cutter also includes a tool holder 8 located at the other end of the tool holder 1. One end of the tool holder 8 is connected to one end of the tool holder 1 via a positioning and easy-to-disassemble connector 9. The positioning and easy-to-disassemble connector 9 includes a rectangular positioning insertion groove 10 located at one end of the tool holder 8. One end of the tool holder 1 is provided with a positioning insertion block 11 that matches and inserts into the positioning insertion groove 10. The inner wall of the positioning insertion groove 10 is provided with an extension connecting groove 12. The end of the positioning insertion block 11 away from the tool holder 1 is provided with an extension connecting rod 13 that matches the extension connecting groove 12. Each outer wall of the positioning insertion block 11 is provided with a wedge-shaped groove 14. An adjusting locking screw 15 is threaded onto the tool holder 8. The inner end of the adjusting locking screw 15 is connected via a bearing to a part that matches the wedge-shaped groove 14. The wedge block 16 is provided, and the outer end of the adjusting locking screw 15 is provided with a rotating wheel 17. The inner wall of the positioning insertion groove 10 is provided with a storage groove 20 that matches the wedge block 16. When the tool bar and tool holder 8 are fixedly connected, the extension connecting rod 13 matches the extension connecting groove 12, and the positioning insertion block 11 matches the positioning insertion groove 10, which can quickly position the tool. The rectangular design can avoid relative rotation. Rotating the rotating wheel 17 drives the adjusting locking screw 15 to rotate. The adjusting locking screw 15 is threadedly connected to the tool holder 8, so that the wedge block 16 moves along the storage groove 20 and enters the wedge groove 14 to fix and tighten the positioning insertion block 11. The four sides of the positioning insertion block 11 can be tightened, making the connection stability between the tool holder 8 and the tool bar higher.

[0025] The tool holder 8 has a rectangular connector 18 at one end away from the positioning slot 10. The connector 18 has two connecting holes 19 to facilitate the fixed installation of the milling cutter.

[0026] During operation, this type of roughing milling cutter with chip breaker groove 7 guides the cutting chips to the inside of the chip removal groove 5 through the chip guide groove 4. The chip removal groove 5 removes the cutting chips. The design of the triangular chip guide groove 6 and the chip breaker groove 7 is such that the triangular chip guide groove 6 guides the cutting chips, allowing them to be guided into the inside of the chip breaker groove 7. The chip breaker groove 7 can cut long chips into shorter small chips, improving the overall chip breaking capability and preventing long chips from wrapping around the milling cutter surface and scratching the workpiece surface, thus affecting the workpiece surface machining quality. It also prevents the long chips from wrapping around and damaging the milling cutter.

[0027] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A roughing milling cutter with chip breaker grooves, comprising a tool holder (1), characterized in that, One end of the cutter bar (1) is provided with a cutter head (2), the outer surface of the cutter head (2) is provided with multiple spiral blades (3), the top of the outer surface of the cutter head (2) is provided with a chip guide groove (4), and a chip discharge groove (5) is provided between two adjacent blades (3). The inner wall of the chip discharge groove (5) is provided with multiple inwardly recessed triangular chip guide grooves (6), and the inner wall of the triangular chip guide grooves (6) is provided with chip breaking grooves (7).

2. The roughing cutter with a chip breaker according to claim 1, characterized in that, The roughing milling cutter also includes a tool holder (8) located at the other end of the tool holder (1).

3. The roughing cutter with a chip breaker according to claim 2, characterized in that, One end of the handle (8) is connected to one end of the bar (1) via a positioning and detachable connector (9).

4. The roughing cutter with a chip breaker according to claim 3, characterized in that, The positioning and disassembly connector (9) includes a rectangular positioning insertion groove (10) at one end of the tool holder (8) and a positioning insertion block (11) at one end of the tool bar (1) that matches and inserts into the positioning insertion groove (10).

5. The roughing cutter with a chip breaker according to claim 4, characterized in that, The inner wall of the positioning insertion groove (10) is provided with an extension connection groove (12), and the end of the positioning insertion block (11) away from the knife bar (1) is provided with an extension connection rod (13) that matches the extension connection groove (12).

6. The roughing cutter with a chip breaker according to claim 5, characterized in that, Each outer side wall of the positioning plug-in block (11) is provided with a wedge groove (14), and the handle (8) is threaded with an adjusting locking screw (15). The inner end of the adjusting locking screw (15) is connected to a wedge block (16) that matches the wedge groove (14) via a bearing. The outer end of the adjusting locking screw (15) is provided with a rotating wheel (17), and the inner wall of the positioning plug-in groove (10) is provided with a storage groove (20) that matches the wedge block (16).

7. The roughing cutter with chip-breaker grooves according to claim 4, characterized in that, The tool holder (8) has a rectangular connector (18) at one end away from the positioning insertion slot (10), and the connector (18) has two connection holes (19).

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