Self-locking stop cutter

Abstract

According to the self-locking stop cutter, when a cutter head and a stop screw move relative to each other or tend to move relative to each other, friction force is produced between the end face of a cutter body and a step face, and the friction force is used for preventing the cutter body and the screw from moving relative to each other. Through the structural design, the stopping function of the cutter is achieved through friction resistance of the end face and the step face, a pin and a pin hole structure do not need to be designed, and the cutter has the advantages of being simple in structure, low in machining precision requirement, convenient to assemble and disassemble, long in service life and high in machining safety. In addition, due to the fact that a pin and a pin hole structure do not need to be designed, the size of the cutter can be smaller than the original size.

Description

Technical Field

[0001] The utility model relates to the field of mechanical processing, in particular to a self-locking stop tool. Background Art

[0002] The description in this section merely provides background information related to the disclosure of the present utility model and does not constitute prior art.

[0003] The stop tool in the prior art usually includes two main parts: a cutter head and a cutter body. In order to prevent relative rotation between the cutter head and the cutter body, a common stopping method is to use a matching structure of pins and pin holes on the two end faces where the cutter head and the cutter body contact each other. Specifically, two pin holes are provided on one of the end faces, and two corresponding pins are provided on the other end face. When the tool is assembled, the pins will be inserted into the pin holes, thereby achieving fixation between the cutter head and the cutter body and preventing them from relative rotation. However, this traditional stopping method has some limitations. First, the processing of the pins and pin holes requires high precision, which increases the manufacturing cost and difficulty. In addition, this structure is generally not suitable for tools with small diameters.

[0004] It should be noted that the above technical background is merely for the purpose of providing a clear and complete description of the technical solutions of the present invention and to facilitate understanding by those skilled in the art. It should not be assumed that the above technical solutions are well known to those skilled in the art simply because they are described in the background technology section of the present invention. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a self-locking stop tool.

[0006] In order to solve the above technical problems, the utility model provides a self-locking stop tool, the tool comprising a cutter head, a cutter body and a stop screw, the cutter head, cutter body and stop screw are all provided with a central through hole, the stop screw comprises a first connecting part, a second connecting part and a step part provided between the first connecting part and the second connecting part, the end of the step part close to the cutter head is a step surface, the first connecting part is inserted into the central through hole of the cutter head and is threadedly connected to the inner wall of the cutter head, the second connecting part is inserted into the central through hole of the cutter body and is threadedly connected to the internal wall of the cutter body, the end face of the cutter head close to the cutter body abuts against the step surface, when the cutter head and the stop screw move relative to each other, or have a tendency to move relative to each other, friction is generated between the end face of the cutter body and the step surface, and the friction force is used to prevent the cutter body and the screw from moving relative to each other.

[0007] Preferably, the end of the cutter head away from the head is a tapered portion, the first connecting portion is inserted into the tapered portion, the tapered portion is inserted into the central through hole of the cutter body, and the end face of the tapered portion abuts against the step surface.

[0008] Preferably, a cutter head adjusting screw is further provided in the central through hole of the head of the cutter head.

[0009] Preferably, the thread directions of the first connecting portion and the second connecting portion of the stop screw are the same.

[0010] Preferably, the diameter of the cutter is 8-12 mm.

[0011] By means of the above technical solution, the beneficial effects of the present invention are as follows:

[0012] The self-locking stopper tool of this utility model generates friction between the end face of the tool body and the step surface when the tool head and the stop screw move relative to each other, or have a tendency to move relative to each other. This friction prevents the tool body and the screw from moving relative to each other. This structural design achieves the tool's stopping function through frictional resistance between the end face and the step surface, eliminating the need for a pin and pinhole structure. This design offers the advantages of a simple structure, low machining precision requirements, easy assembly and disassembly, a long service life, and high machining safety. Furthermore, since the pin and pinhole structure are not required, the tool size can be made smaller than before. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the tool of this application.

[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of the tool of the present application.

[0015] Figure 3 It is a schematic structural diagram of the stop screw of the present application.

[0016] Figure 4 It is a schematic diagram of the structure in which the stop screw of the present application is installed on the cutter head.

[0017] Figure 5 It is a schematic cross-sectional view of the stop screw of the present application installed on the cutter head.

[0018] Figure 6 yes Figure 2 A partial enlarged view of part A.

[0019] Among them: 1. Cutting head; 2. Stop screw; 3. Cutting body; 21. First connecting part; 22. Second connecting part; 23. Step part; 231. Step surface; 11. Conical part; 4. Cutting head adjusting screw. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] It should be noted that, in the description of this utility model, the terms "first," "second," etc., are used solely for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this utility model, unless otherwise specified, "plurality" means two or more.

[0022] like Figure 1-6 As shown, the utility model provides a self-locking stop tool, which includes a cutter head 1, a cutter body 3 and a stop screw 2. The cutter head 1, the cutter body 3 and the stop screw 2 are all provided with a central through hole. The stop screw 2 includes a first connecting portion 21, a second connecting portion 22 and a step portion 23 provided between the first connecting portion 21 and the second connecting portion 22. The end of the step portion 23 close to the cutter head 1 is a step surface 231. The first connecting portion 21 is inserted into the central through hole of the cutter head 1 and is threadedly connected to the inner wall of the cutter head 1. The second connecting portion 22 is inserted into the central through hole of the cutter body 3 and is threadedly connected to the inner wall of the cutter body 3. The end face of the cutter head 1 close to the cutter body 3 abuts against the step surface 231. The thread directions of the first connecting portion 21 and the second connecting portion 22 of the stop screw 2 are the same. When the cutter head 1 and the stop screw 2 move relative to each other, or have a tendency to move relative to each other, friction is generated between the end face of the cutter body 3 and the step surface 231, and the friction is used to prevent the cutter body 3 and the screw from moving relative to each other.

[0023] The end of the cutter head 1 away from the head is a tapered portion 11. The first connecting portion 21 is inserted into the tapered portion 11, and the tapered portion 11 is inserted into the central through hole of the cutter body 3. The end surface of the tapered portion 11 abuts against the step surface 231. A cutter head adjustment screw 4 is also provided in the central through hole of the head of the cutter head 1.

[0024] In the self-locking stop tool of the present invention, when the cutter head 1 and the stop screw 2 move relative to each other, or have a tendency to move relative to each other, friction is generated between the end face of the cutter body 3 and the stepped surface 231. This friction is used to prevent relative movement between the cutter body 3 and the screw. This structural design achieves the tool's stopping function through frictional resistance between the end face and the stepped surface 231, eliminating the need for a pin and pinhole structure. This design offers the advantages of a simple structure, low machining precision requirements, easy assembly and disassembly, a long service life, and high machining safety. Furthermore, since the pin and pinhole structure are not required, the tool can be made smaller than before, with a diameter of 8-12 mm.

[0025] The above-described embodiments are merely preferred embodiments for the purpose of fully illustrating the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are within the scope of protection of the present invention. The scope of protection of the present invention shall be subject to the claims.

Claims

1. A self-locking stop tool, characterized in that: The tool comprises a tool head, a tool body and a stop screw. The cutter head, cutter body and stop screw are all provided with a central through hole. The stop screw includes a first connecting portion, a second connecting portion, and a step portion provided between the first connecting portion and the second connecting portion, wherein one end of the step portion close to the cutter head is a step surface. The first connecting portion is inserted into the central through hole of the cutter head and is threadedly connected to the inner wall of the cutter head. The second connecting portion is inserted into the central through hole of the cutter body and connected with the internal thread of the cutter body. The end face of the cutter head close to the cutter body abuts against the step surface. When the cutter head and the stop screw move relative to each other or have a tendency to move relative to each other, friction is generated between the end face of the cutter body and the step surface. The friction is used to prevent the cutter body and the screw from moving relative to each other.

2. The tool according to claim 1, characterized in that The end of the cutter head away from the head is a tapered portion, the first connecting portion is inserted into the tapered portion, the tapered portion is inserted into the central through hole of the cutter body, and the end face of the tapered portion abuts against the step surface.

3. The tool according to claim 1, characterized in that A cutter head adjusting screw is also provided in the central through hole of the head of the cutter head.

4. The tool according to claim 1, characterized in that The thread directions of the first connecting portion and the second connecting portion of the stop screw are the same.

5. The cutting tool according to claim 1, wherein The diameter of the cutter is 8-12 mm.

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