Normal cutter for machining precise small-modulus worm

Abstract

The normal cutter comprises a cutter body and a cutter head, the cutter head is fixed at the end of the cutter body, the cutter head is obliquely arranged at the end of the cutter body, the cutter head comprises a front end face, a top face, a bottom face, a left side face and a right side face, the front end face and the bottom face intersect to form a main cutting edge, and the top face and the bottom face intersect to form an auxiliary cutting edge. The left side face, the right side face and the bottom face intersect to form an auxiliary cutting edge, the left side face and the right side face are both involute arc faces, an inclined face is arranged on the bottom face of the cutter body, and the bottom face of the cutter head is flush with the inclined face. The turning tool is simple in structure and reasonable in design, the cutting rigidity of the tool is improved, and meanwhile the turning range is expanded.

Description

Technical Field

[0001] The utility model belongs to the technical field of turning tools, in particular to a normal tool used for machining a precision small-module worm. Background Art

[0002] Normal tools are usually used to process gears with non-straight teeth. Normal tools are used in precision small modulus worm machining, such as Figure 1 As shown in the figure, the tool back angle of this normal tool is too large, resulting in insufficient tool rigidity.

[0003] Therefore, how to solve the defects of the above-mentioned prior art has become the direction of efforts of technicians in this field. Utility Model Content

[0004] The purpose of the utility model is to provide a normal tool for machining a precision small-module worm, which can completely solve the deficiencies of the above-mentioned prior art.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] A normal tool for machining a precision small-modulus worm comprises a tool body and a tool head, wherein the tool head is fixed at the end of the tool body and is tiltedly arranged at the end of the tool body. The tool head comprises a front end face, a top face, a bottom face, a left side face and a right side face, wherein the front end face intersects with the bottom face to form a main cutting edge, and the left side face, the right side face and the bottom face intersect to form a secondary cutting edge, wherein both the left side face and the right side face are involute arc surfaces, and the bottom face of the tool body is provided with an inclined surface, and the bottom face of the tool head is flush with the inclined surface.

[0007] Furthermore, the blade body is a cube, and the angle between the blade head and the top surface of the blade body is 40°-55°.

[0008] Furthermore, the angle between the top surface and the bottom surface of the cutter head is 3°-5°, and the angle between the bottom surface and the horizontal plane is 40°-55°.

[0009] Furthermore, the front end face of the cutter head is an inclined face, and the angle between the front end face and the bottom face is 50°-60°.

[0010] Compared with the prior art, the utility model has the beneficial effects of simple structure, reasonable design, increased tool cutting rigidity, and expanded turning processing range. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of a prior art tool;

[0012] Figure 2 This is a three-dimensional structure diagram of the utility model. Figure 1 ;

[0013] Figure 3 This is a three-dimensional structure diagram of the utility model. Figure 2 ;

[0014] Figure 4 This is a three-dimensional structure diagram of the utility model. Figure 3 ;

[0015] Figure 5 This is a three-dimensional structure diagram of the utility model. Figure 4 ;

[0016] Figure 6 It is a working state diagram of the utility model. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with specific embodiments and drawings.

[0018] like Figures 2 to 6 As shown, a normal tool for precision small modulus worm processing includes a tool body 1 and a tool head 2, wherein the tool head 2 is fixed at the end of the tool body 1, and the tool head 2 is tiltedly arranged at the end of the tool body 1, and the tool head 2 includes a front end face 201, a top face 202, a bottom face 203, a left side face 204 and a right side face 205, wherein the front end face intersects with the bottom face to form a main cutting edge, and the left side face, the right side face intersect with the bottom face to form a secondary cutting edge, and the left side face and the right side face are both involute arc surfaces, and the bottom surface of the tool body is provided with a bevel, and the bottom surface of the tool head is flush with the bevel.

[0019] In this embodiment, the blade body is a cube, and the angle between the blade head and the top surface of the blade body is 40°-55°, preferably 40°.

[0020] In this embodiment, the angle between the top surface and the bottom surface of the cutter head is 3°-5°, preferably 3°, and the angle between the bottom surface and the horizontal plane is 40°-55°, preferably 40°.

[0021] In this embodiment, the front end face of the cutter head is an inclined face, and the angle between the front end face and the bottom face is 50°-60°, preferably 55°.

[0022] The utility model increases the cutting rigidity of the tool by designing the tool shape structure, and also expands the turning processing range. The utility model reduces the tool back angle and increases the cutting strength of the tool edge. At the same time, it also provides strong support for products that require large tool back angle cutting and expands the turning processing range.

[0023] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A normal tool for machining a precision small modulus worm, comprising a tool body and a tool head, wherein the tool head is fixed at the end of the tool body, and characterized in that: The cutter head is tiltedly arranged at the end of the cutter body, and includes a front end face, a top face, a bottom face, a left side face and a right side face. The front end face intersects with the bottom face to form a main cutting edge, and the left side face, the right side face and the bottom face intersect to form a secondary cutting edge. The left side face and the right side face are both involute arc surfaces. The bottom face of the cutter body is provided with a bevel, and the bottom face of the cutter head is flush with the bevel.

2. The normal tool for precision small modulus worm machining according to claim 1, characterized in that: The knife body is a cube, and the angle between the knife head and the top surface of the knife body is 40°-55°.

3. The normal tool for precision small modulus worm machining according to claim 1, characterized in that: The included angle between the top surface and the bottom surface of the cutter head is 3°-5°, and the included angle between the bottom surface and the horizontal plane is 40°-55°.

4. The normal tool for precision small modulus worm machining according to claim 2 or 3, characterized in that: The front end surface of the cutter head is an inclined surface, and the angle between the front end surface and the bottom surface is 50°-60°.

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