A metalworking tool

Abstract

This utility model relates to the field of metal processing technology, specifically to a metal processing cutting tool. It includes a tool body, a tool holder, and a cutting head disposed at one end of the tool holder. A first drive shaft is fixedly mounted at one end of the tool holder, and a first mating hole is formed at the end of the first drive shaft away from the tool holder. A central rod is rotatably mounted at the first mating hole, and a second drive shaft is mounted at the end of the central rod away from the tool holder. This utility model incorporates a central rod within the tool body. The rotation of the central rod generates rotational inertia, which counteracts low-frequency vibrations, thereby improving the stability of the cutting process and resulting in less chip breaking at the workpiece.

Description

Technical Field

[0001] This utility model relates to the field of metal processing technology, and more specifically, to a metal processing tool. Background Technology

[0002] In the field of metal cutting, the chip-breaking performance of cutting tools is directly related to the surface quality of workpieces. With the rapid development of precision manufacturing technology, the aerospace, automotive parts, and mold industries have increasingly stringent requirements for the surface roughness of parts.

[0003] However, current high-speed carbide cutting tools tend to produce chips that extend in a continuous ribbon or spiral shape during actual machining, resulting in relatively long chip lengths. Further processing is required to meet process requirements. Utility Model Content

[0004] This utility model provides a metalworking tool that can overcome some or all of the defects of the prior art.

[0005] According to the present invention, a metalworking tool includes a tool body, the tool body includes a tool holder and a tool head disposed at one end of the tool holder, a first drive shaft is fixedly disposed at one end of the tool holder, a first mating hole is formed at the end of the first drive shaft away from the tool holder, a central rod is rotatably disposed at the first mating hole, and a second drive shaft is disposed at the end of the central rod away from the tool holder.

[0006] Preferably, the end of the tool holder away from the tool tip forms a first cavity extending toward the tool tip, and the first drive shaft is provided with a corresponding second cavity. The first cavity and the second cavity are connected to each other to form a mating cavity.

[0007] Preferably, the portion of the central rod located within the mating cavity is provided with multiple counterweights spaced apart along the axial direction.

[0008] Preferably, a high-frequency vibration element is fixedly sleeved at the tool holder.

[0009] Preferably, the high-frequency vibration part includes a housing, and an ultrasonic generator is provided inside the housing.

[0010] Preferably, the high-frequency vibration section is spaced apart from the first drive shaft.

[0011] Beneficial effects:

[0012] The metalworking tool provided in this embodiment of the utility model has a central rod set in the tool body. The rotation of the central rod generates rotational inertia, which counteracts low-frequency vibration, thereby improving the stability of the tool processing and reducing chip breaking at the workpiece.

[0013] Furthermore, by setting a high-frequency vibration section to create a tiny gap when the cutter head contacts the workpiece, frictional resistance can be effectively reduced, thereby reducing cutting force. When machining workpieces with high hardness, the wear on the cutting tool is less. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of a metalworking tool in at least one embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram of the internal structure of a metalworking tool in at least one embodiment of the present invention. Detailed Implementation

[0016] To clearly illustrate the technical solution of this utility model, the embodiments are described in full with reference to the accompanying drawings.

[0017] Seen in Figure 1-2 This embodiment provides a metalworking tool, which includes a tool body 1, a tool shank 11, and a tool head 12 disposed at one end of the tool shank 11.

[0018] The tool holder 11 has a first drive shaft 2 fixedly installed at one end, which is used to drive the tool holder 11 to rotate. The end of the first drive shaft 2 away from the tool holder 11 forms a first mating hole 21. A central rod 3 is rotatably installed at the first mating hole 21. A second drive shaft 4 is installed at the end of the central rod 3 away from the tool holder 11, which is used to drive the central rod 3 to rotate.

[0019] Specifically, the first drive shaft 2 drives the tool holder to rotate to process the workpiece. When the tool head 12 contacts the workpiece, it will generate a certain low-frequency vibration due to the force when cutting the workpiece. The second drive shaft 4 drives the center rod 3 to rotate to generate rotational inertia, thereby offsetting part of the above-mentioned low-frequency vibration, improving the stability of tool processing, and thus making the chip breakage on the workpiece surface smaller when the tool processes the workpiece, resulting in better workpiece surface quality.

[0020] Furthermore, a first cavity 51 extending toward the cutter head 12 is formed at the end of the shank 11 away from the cutter head 12, and a second cavity 52 is correspondingly provided on the first drive shaft 2. The first cavity 51 and the second cavity 52 are connected to each other to form a mating cavity 5. The mating cavity 5 is used to accommodate the center rod 3.

[0021] Among them, the part of the central rod 3 located in the mating cavity 5 is provided with multiple counterweights 31 at intervals along the axial direction. The counterweights 31 are used to increase the rotational inertia of the central rod 3, thereby improving the ability of the central rod 3 to counteract low-frequency vibrations at the tool.

[0022] In some embodiments, a high-frequency vibration part 6 is fixedly sleeved at the tool holder, and the high-frequency vibration part 6 is spaced apart from the first transmission shaft 2.

[0023] Specifically, the high-frequency vibration unit 6 includes a housing 61, and an ultrasonic generator 62 is provided inside the housing 61. The ultrasonic generator 62 is used to generate high-frequency ultrasonic vibration, thereby improving the cutting ability of the tool when machining the workpiece. The high-frequency vibration creates a small gap when the tool head 12 contacts the workpiece, which can effectively reduce frictional resistance and thus reduce cutting force. When machining workpieces with high hardness, the wear on the tool is less.

[0024] Furthermore, high-frequency vibration reduces chip adhesion at the tool location, thereby effectively reducing tool wear.

[0025] In addition, high-frequency vibration causes the cutting tool to contact the workpiece more frequently during machining, resulting in fewer chips on the workpiece and helping to improve the surface finish of the workpiece.

[0026] It is readily understood that those skilled in the art can combine, split, or reorganize the embodiments provided in this application to obtain other embodiments, all of which do not exceed the protection scope of this application.

Claims

1. A metal working tool, characterized in that, The tool includes a tool body, which includes a tool holder and a tool head disposed at one end of the tool holder. A first drive shaft is fixedly disposed at one end of the tool holder. A first mating hole is formed at the end of the first drive shaft away from the tool holder. A central rod is rotatably disposed at the first mating hole. A second drive shaft is disposed at the end of the central rod away from the tool holder.

2. The metal working tool of claim 1, wherein, The end of the tool holder away from the tool tip forms a first cavity extending towards the tool tip, and the first drive shaft is provided with a corresponding second cavity. The first cavity and the second cavity are connected to each other to form a mating cavity.

3. A metal working tool according to claim 2, characterised in that The portion of the central rod located within the mating cavity is provided with multiple counterweights spaced apart along the axial direction.

4. The metalworking tool according to claim 1, characterized in that, A high-frequency vibration element is fixedly sleeved at the tool holder.

5. The metalworking tool according to claim 4, characterized in that, The high-frequency vibration part includes a housing, and an ultrasonic generator is installed inside the housing.

6. The metalworking tool according to claim 4, characterized in that, The high-frequency vibration section is spaced apart from the first drive shaft.

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