Composite T-shaped cutter

Abstract

The utility model relates to a composite T-shaped cutter which comprises a cutter bar and a cutter head, the cutter bar and the cutter head are integrally formed, a first combined cutter assembly part and a second combined cutter assembly part are arranged on the cutter head, and each of the first combined cutter assembly part and the second combined cutter assembly part comprises a first assembly part, a second assembly part, a third assembly part and a fourth assembly part; the first assembly part is a notch-shaped assembly part arranged on the periphery of the cutter head, and the cutting edge of the first cutter body extends to the front side and the rear side of the cutter head; a chip groove is formed between the first assembly part and the second assembly part, and the cutting edge of the second cutter body is located on the peripheral part of the cutter head; a chip groove is formed between the second assembling part and the third assembling part, the third assembling part is a third cutter body assembling groove formed in the periphery of the cutter head, and the cutting edge of the third cutter body is located on the periphery of the cutter head; the fourth assembling part is a notch-shaped assembling part arranged on the periphery of the cutter head, and the cutting edge of the fourth cutter body is located on the periphery of the cutter head. The tool cost can be reduced, and the machining precision and smoothness of a workpiece can be improved.

Description

Technical Field

[0001] This utility model relates to the field of cutting tools, and in particular to a composite T-shaped knife. Background Technology

[0002] A T-slot cutter is a tool mounted on a milling machine for milling T-shaped grooves and side grooves on workpieces. In the prior art, a T-slot cutter typically includes a tool shank and a cutter head. A disc-shaped cutter head is located at the end of the tool shank, and multiple cutting edges are distributed on the outer circumference of the cutter head. These cutting edges are used to machine the grooves on the workpiece. For example, patent publication number CN 212976867 U discloses a cemented carbide composite T-slot cutter, including a tool shank, a transition platform, a connecting part, and a cutter head. One end of the tool shank is connected to one end of the transition platform, the other end of the transition platform is connected to one end of the connecting part, and the other end of the connecting part is connected to one end of the cutter head. The cutter head has five cutting edges, each of which includes an end edge, a peripheral edge, and a rear edge. The end edge is located at the other end of the cutter head, the peripheral edge is located on the side of the cutter head, and the rear edge is located at the tail of the cutter head near the connecting part. A small plane with a width of 0.02 mm is provided between the end edge and the peripheral edge. The disadvantage of this type of T-cutting tool is that the T-cutting tool in this solution is a composite T-cutting tool made of cemented carbide in one piece. It is necessary to machine the end edge, peripheral edge and back edge on the cemented carbide, which is costly. Moreover, when some of the cutting edges are damaged, the tool will be scrapped, which will result in material waste. Summary of the Invention

[0003] The purpose of this invention is to address the problems described in the background art, where existing T-shaped cutters are made of cemented carbide in one piece, requiring the machining of end edges, peripheral edges, and rear edge edges on the cemented carbide, resulting in high costs. Furthermore, when some cutting edges are damaged, the cutter becomes unusable, leading to material waste. This invention provides a composite T-shaped cutter that can solve the aforementioned problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A composite T-shaped cutter includes a cutter shank and a cutter disc, the cutter shank and the cutter disc being integrally formed. The cutter disc is provided with a first combined cutter assembly part and a second combined cutter assembly part, each of the first combined cutter assembly part and the second combined cutter assembly part including a first assembly part, a second assembly part, a third assembly part and a fourth assembly part.

[0006] The first assembly part is a notch-shaped assembly part provided on the outer periphery of the cutter head. The first assembly part is provided with an assembly groove for assembling the first cutter body at a position near the middle of the cutter head. The first cutter body is fixedly connected in the assembly groove, and the cutting edge of the first cutter body extends to the front and rear sides of the cutter head.

[0007] The second assembly part is arranged clockwise from the front end face of the cutter head on the rear side of the first assembly part. A chip removal groove is provided between the first assembly part and the second assembly part. The second assembly part is a second cutter body assembly groove provided on the outer periphery of the cutter head. The second cutter body assembly groove is located near the front end face of the cutter head. The second cutter body is fixedly connected in the second cutter body assembly groove. The cutting edge of the second cutter body is located on the outer periphery of the cutter head.

[0008] The third assembly part is arranged clockwise from the front end face of the cutter head on the rear side of the second assembly part. A chip removal groove is provided between the second assembly part and the third assembly part. The third assembly part is a third cutter body assembly groove provided on the outer periphery of the cutter head. The third cutter body assembly groove is located near the rear end face of the cutter head. The third cutter body is fixedly connected in the third cutter body assembly groove. The cutting edge of the third cutter body is located on the outer periphery of the cutter head.

[0009] The fourth assembly part is arranged clockwise on the rear side of the third assembly part. The fourth assembly part is a notch-shaped assembly part on the outer periphery of the cutter head. An assembly groove for assembling the fourth cutter body is provided in the part of the fourth assembly part near the outer periphery of the cutter head. The fourth cutter body is fixedly connected in the assembly groove, and the cutting edge of the fourth cutter body is located on the outer periphery of the cutter head.

[0010] The cutting edges of the second, third, and fourth cutter bodies are equidistant from the center of the cutter head, and the length of the cutting edge of the fourth cutter body covers the cutting length of the second and third cutter bodies.

[0011] In the above scheme, the first tool body includes two parallelogram-shaped tool bodies. One tool body is fixed near the front side of the cutter head, with its cutting edge located on the front side of the cutter head. The other tool body is fixed near the rear side of the cutter head, with its cutting edge located on the rear side of the cutter head. With this arrangement, the first tool body can machine grooves on the front and rear end faces of the workpiece.

[0012] In the above scheme, both the second and third cutting tools are rectangular, and their cutting positions overlap. This arrangement allows the second and third cutting tools to be used for machining the bottom of the workpiece groove, with each tool machining a portion while maintaining an overlap. This reduces cutting resistance, resulting in a smoother cutting surface, and also minimizes the width of cutting debris, preventing it from affecting the cutting surface.

[0013] In the above design, both ends of the second and third cutting tools are equipped with chamfering edges. This configuration allows for simultaneous chamfering of the front and rear ends of the cutting groove during the groove machining process.

[0014] In the above design, the fourth cutter body is triangular, with cutting edges on all three sides. This design allows the cutter body to have more cutting edges, enabling the cutting edges to be replaced as needed, thus extending the service life of the cutter body.

[0015] In the above design, the fourth cutter body has chamfered edges at its three apex positions. The angle and position of the chamfered edges on the fourth cutter body correspond to the positions of the chamfered edges at the front end of the second cutter body and the rear end of the third cutter body, respectively. With this arrangement, after the second and third cutters complete the groove cutting, the fourth cutter body is used for further finish milling, resulting in smooth cutting surfaces on the second and third cutters and improving the machining accuracy of the groove.

[0016] This invention offers several advantages: The composite T-shaped cutter features multiple detachable cutter bodies on its cutter head. These cutter bodies can be made of high-strength cemented carbide, while the cutter head and shank can be made of ordinary tool alloy. This design improves the cutting effect of the cutter edges and reduces the overall cost of the tooling. Furthermore, even if some cutter bodies wear out during use, only the worn ones need to be replaced, while the remaining cutter bodies and cutter head can continue to be used, significantly reducing product processing costs. The composite T-shaped cutter of this invention has a first cutter body that cuts the front and rear faces of the groove on the workpiece; a second and third cutter body that cuts the bottom of the groove and chamfers both ends; and a fourth cutter body that performs finish milling on the cutting surfaces of the second and third cutter bodies. Therefore, a single set of composite T-shaped cutters can complete the groove machining process without the need to change tools, improving workpiece machining accuracy and surface finish. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the front structure of the composite T-shaped blade of this utility model.

[0018] Figure 2 This is a schematic diagram of the outer peripheral structure of the composite T-shaped knife of this utility model. Figure 1 The dotted lines on the tool bodies are only used to indicate the radial and axial mounting positions of each tool body, and do not mean that all tool bodies are in the same assembly part.

[0019] Figure 3 This is a schematic diagram of the first cutter body.

[0020] Figure 4 This is a schematic diagram of the second and third cutter bodies.

[0021] Figure 5 This is a schematic diagram of the fourth blade.

[0022] The reference numerals in the figure are as follows: tool holder 1, tool head 2, first assembly part 3, second assembly part 4, third assembly part 5, fourth assembly part 6, first tool body 7, cutting edge 71, second tool body 8, cutting edge 81, chamfering edge 82, third tool body 9, fourth tool body 10, cutting edge 101, chamfering edge 102, chip removal groove 11. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below through embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] like Figure 1 and 2 The composite T-shaped cutter shown includes a cutter shank 1 and a cutter disc 2. The cutter shank 1 and the cutter disc 2 are integrally formed. Both the cutter shank 1 and the cutter disc 2 can be made of the same material as the cutter disc 2 and cutter shank 1 of existing cutters, without the need to use the same expensive high-hardness alloy as the cutter body. This can reduce the manufacturing cost of the composite T-shaped cutter.

[0025] The cutter head 2 is provided with a first combined cutter assembly part 3 and a second combined cutter assembly part 4. Both the first combined cutter assembly part 3 and the second combined cutter assembly part 4 include a first assembly part 3, a second assembly part 4, a third assembly part 5 and a fourth assembly part 6.

[0026] Although attached Figure 1 and 2 The schematic diagram shows only two sets of combined tool assemblies. However, in practical applications, the number of combined tool assemblies can be selected on the circumference of the cutter head according to the size of the cutter head and the size of the cutter. For example, three or four sets of combined tool assemblies can be set, and three or four sets of combined cutters can be set accordingly.

[0027] The first assembly part 3 is a notch-shaped assembly part provided on the outer periphery of the cutter head 2, such as... Figure 2 As shown, the notch can be set as an approximately right-angled notch. The first assembly part 3 is provided with an assembly groove for assembling the first cutter body 7 near the middle of the cutter head 2. The first cutter body 7 is fixedly connected in the assembly groove, and the cutting edge 71 of the first cutter body 7 extends to the front and rear sides of the cutter head 2.

[0028] The second assembly part 4 is arranged clockwise on the rear side of the first assembly part 3. A chip removal groove 11 is provided between the first assembly part 3 and the second assembly part 4. The second assembly part 4 is a second tool body assembly groove provided on the outer periphery of the cutter head 2. The second tool body assembly groove is located near the front end face of the cutter head 2. The second tool body 8 is fixedly connected in the second tool body assembly groove. The cutting edge 81 of the second tool body 8 is located on the outer periphery of the cutter head 2.

[0029] The third assembly part 5 is arranged clockwise on the rear side of the second assembly part 4. A chip removal groove 11 is provided between the second assembly part 4 and the third assembly part 5. The third assembly part 5 is a third tool body assembly groove provided on the outer periphery of the cutter head 2. The third tool body assembly groove is located near the rear end face of the cutter head 2. The third tool body 9 is fixedly connected in the third tool body assembly groove. The cutting edge of the third tool body 9 is located on the outer periphery of the cutter head.

[0030] The fourth assembly part 6 is arranged clockwise from the front end face of the cutter head 2 on the rear side of the third assembly part 5. The fourth assembly part 6 is a notch-type assembly part provided on the outer periphery of the cutter head 2. The notch can be set as an approximately right-angled notch. An assembly groove for assembling the fourth cutter body 10 is provided in the part of the fourth assembly part 6 near the outer periphery of the cutter head 2. The fourth cutter body 10 is fixedly connected in the assembly groove. The cutting edge 101 of the fourth cutter body 10 is located on the outer periphery of the cutter head 2.

[0031] The cutting edges of the second cutter body 8, the third cutter body 9, and the fourth cutter body 10 are all equidistant from the center of the cutter head, and the length of the cutting edge of the fourth cutter body 10 covers the cutting length of the second cutter body 8 and the third cutter body 9.

[0032] The arrangement of the first cutting body 7 can be selected according to needs. For example, the first cutting body 7 can be a large cutting body, with its front and rear cutting edges extending to the front and rear sides of the cutter head, respectively. Alternatively, two parallelogram-shaped cutting bodies can be selected, with one fixed near the front side of the cutter head and its cutting edge located on the front side of the cutter head, and the other fixed near the rear side of the cutter head and its cutting edge located on the rear side of the cutter head. With this arrangement, the first cutting body can perform groove machining on the front and rear end faces of the workpiece.

[0033] The first cutter body 7 is preferably rectangular, with cutting edges 71 provided at the four corners of the cutter body 7. This arrangement can extend the service life of the first cutter body.

[0034] Both the second cutter body 8 and the third cutter body 9 can be rectangular, and their cutting positions overlap. This arrangement allows the second cutter body 8 and the third cutter body 9 to be used separately for machining the bottom of the workpiece groove. Each cutter body machines a portion, with an overlapping section in between. This reduces cutting resistance, resulting in a smoother cutting surface, and also reduces the width of cutting chips, preventing chips from affecting the cutting surface.

[0035] Both ends of the second cutter body 8 and the third cutter body 9 can be provided with chamfering edges 82. With this setting, chamfering can be completed at the front and rear ends of the cutting groove while the groove is being machined.

[0036] The fourth cutter body 10 can be rectangular or triangular, and each side of the fourth cutter body 10 can be provided with a cutting edge 101. For example, a cutting edge can be provided on all three sides of a triangular cutter body. This arrangement allows the cutter body to have more cutting edges, and the working cutting edge can be replaced according to the usage of the cutting edge, thus extending the service life of the cutter body.

[0037] The fourth cutter body 10 can be equipped with chamfering edges 102 at its three apex positions. The angle and position of the chamfering edges 102 on the fourth cutter body 101 correspond to the positions of the chamfering edges 82 at the front end of the second cutter body 8 and the chamfering edges at the rear end of the third cutter body 9, respectively. With this arrangement, after the second cutter body 8 and the third cutter body 9 have completed the groove cutting, the fourth cutter body 10 can be used for further finish milling, which can finish mill the cutting surfaces of the second cutter body 8 and the third cutter body 9 into smooth cutting surfaces, thereby improving the machining accuracy of the groove.

[0038] This utility model's composite T-shaped cutter features multiple detachable cutter bodies on its cutter head. These cutter bodies can be made of high-strength cemented carbide, while the cutter head and handle can be made of ordinary tool alloy. This design not only improves the cutting effect of the cutter body's cutting edge but also reduces the overall cost of the tool. Furthermore, even if some cutter bodies wear out during use, only the worn cutter bodies need to be replaced, while the other cutter bodies and cutter head can continue to be used, thus significantly reducing product processing costs.

[0039] The composite T-cutting tool of this invention has a first cutting body that can cut the front and rear faces of the groove on the workpiece, a second and third cutting body that can cut the bottom of the groove and chamfer both ends of the groove, and a fourth cutting body that can finish mill the cutting surfaces of the second and third cutting bodies. Therefore, the groove can be machined using a set of composite T-cutting tools without changing the tools during the machining process, which can improve the machining accuracy of the workpiece and improve the surface finish of the machined surface.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the scope and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A composite T-shaped blade, characterized in that: It includes a tool holder and a tool disc, the tool holder and the tool disc are integrally formed, and the tool disc is provided with a first combination tool assembly part and a second combination tool assembly part. The first combination tool assembly part and the second combination tool assembly part each include a first assembly part, a second assembly part, a third assembly part and a fourth assembly part. The first assembly part is a notch-shaped assembly part provided on the outer periphery of the cutter head. The first assembly part is provided with an assembly groove for assembling the first cutter body at a position near the middle of the cutter head. The first cutter body is fixedly connected in the assembly groove, and the cutting edge of the first cutter body extends to the front and rear sides of the cutter head. The second assembly part is arranged clockwise from the front end face of the cutter head on the rear side of the first assembly part. A chip removal groove is provided between the first assembly part and the second assembly part. The second assembly part is a second cutter body assembly groove provided on the outer periphery of the cutter head. The second cutter body assembly groove is located near the front end face of the cutter head. The second cutter body is fixedly connected in the second cutter body assembly groove. The cutting edge of the second cutter body is located on the outer periphery of the cutter head. The third assembly part is arranged clockwise from the front end face of the cutter head on the rear side of the second assembly part. A chip removal groove is provided between the second assembly part and the third assembly part. The third assembly part is a third cutter body assembly groove provided on the outer periphery of the cutter head. The third cutter body assembly groove is located near the rear end face of the cutter head. The third cutter body is fixedly connected in the third cutter body assembly groove. The cutting edge of the third cutter body is located on the outer periphery of the cutter head. The fourth assembly part is arranged clockwise on the rear side of the third assembly part. The fourth assembly part is a notch-shaped assembly part on the outer periphery of the cutter head. An assembly groove for assembling the fourth cutter body is provided in the part of the fourth assembly part near the outer periphery of the cutter head. The fourth cutter body is fixedly connected in the assembly groove, and the cutting edge of the fourth cutter body is located on the outer periphery of the cutter head. The cutting edges of the second, third, and fourth cutter bodies are equidistant from the center of the cutter head, and the length of the cutting edge of the fourth cutter body covers the cutting length of the second and third cutter bodies.

2. The composite T-shaped blade according to claim 1, characterized in that: The first cutter body includes two parallelogram-shaped cutter bodies. One cutter body is fixed near the front side of the cutter head, with the cutting edge located on the front side of the cutter head. The other cutter body is fixed near the rear side of the cutter head, with the cutting edge located on the rear side of the cutter head.

3. The composite T-shaped blade according to claim 1, characterized in that: Both the second and third cutter bodies are rectangular, and their cutting positions overlap.

4. The composite T-shaped blade according to claim 1, characterized in that: Both ends of the second and third blades are provided with chamfered edges.

5. The composite T-shaped blade according to claim 1, characterized in that: The fourth cutter body is a triangular cutter body, and cutting edges are provided on all three sides of the fourth cutter body.

6. The composite T-shaped blade according to claim 4, characterized in that: The fourth blade is provided with chamfered edges at its three apex positions. The angle and position of the chamfered edges on the fourth blade correspond to the positions of the chamfered edges at the front end of the second blade and the rear end of the third blade, respectively.

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