Lathe tool for machining sawtooth threads

Abstract

The lathe tool for machining the sawtooth threads comprises a tool rest, a tool bar, a blade, a first fixing screw and a second fixing screw, the front end of the tool rest is provided with a first installation groove vertically penetrating through the tool rest, the rear end of the first installation groove is provided with an inclined inner wall, and the inclined inner wall inclines along the rear lower portion. A first threaded hole is horizontally formed in the right side of the tool rest and communicates with the first mounting groove, the tool bar is correspondingly arranged in the first mounting groove, the rear end face of the tool bar is attached to the inclined inner wall, the first fixing screw is in threaded connection with the first threaded hole, and the left end of the first fixing screw makes contact with the right end face of the tool bar. The tool rest has the advantages that when the tool rest feeds, the tool rest does not need to cut obliquely, the tool rest directly extends into an inner cavity in parallel with the inner cavity of a workpiece, the tool rest cannot interfere with the inner cavity, the tool rest cannot be damaged, the tool rest cannot be damaged, the work efficiency is improved, and the work efficiency is improved. And machining of various sawtooth threads can be completed.

Description

Technical Field

[0001] The utility model relates to the field of thread processing tools, and particularly relates to a lathe tool for processing serrated threads. Background Art

[0002] Serrated threads are commonly found on various metal workpieces and are used for the assembly between metal workpieces. With the continuous improvement of processing technology and processing requirements, various special threads have emerged, such as serrated threads. When processing internal threads on the existing lathe tool rest, due to the large serration slope of the thread, the placement angle of the tool rest is limited, and it is easy to interfere with the inner cavity of the workpiece, making it impossible to process serrated threads. Therefore, it is necessary to manufacture a lathe tool for processing serrated threads to solve the above problems. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a lathe tool for processing serrated threads to solve the problems mentioned in the background art.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A lathe tool for processing serrated threads includes a tool rest, a tool shank, a cutting blade, a first fixing screw and a second fixing screw. The front end of the tool rest is provided with a first installation groove vertically penetrating the tool rest. The rear end of the first installation groove is provided with an inclined inner wall, which is inclined downward and backward. The first threaded hole is horizontally arranged on the right side of the tool rest and communicates with the first installation groove. The tool shank is correspondingly located in the first installation groove and its rear end face is in contact with the inclined inner wall. The first fixing screw is threadedly connected to the first threaded hole, and the left end of the first fixing screw contacts the right end face of the tool shank. The left end face of the tool shank contacts the inner wall of the first installation groove. Both the first threaded hole and the first fixing screw are provided in two groups. The cutting blade is fixed to the lower end of the tool shank through the second fixing screw.

[0006] Further description of the utility model: The included angle between the inclined inner wall and the vertical plane is 7°.

[0007] Further description of the utility model: A second installation groove is provided on the right side of the lower end of the tool shank. A second threaded hole is also horizontally arranged on the tool shank, and the right end of the second threaded hole communicates with the second installation groove. The second fixing screw is threadedly connected to the second threaded hole, and the cutting blade is fixed in the second installation groove through the second fixing screw.

[0008] Further description of the utility model: An inclined outer wall is provided on the left side of the lower end of the tool shank, which is inclined downward and to the right.

[0009] Further description of the utility model: A clearance groove is provided at the lower end of the tool rest. The upper inner wall of the clearance groove is a plane. A limiting boss protruding backward is provided at the lower end of the tool shank, and the upper end of the limiting boss contacts the upper inner wall of the clearance groove.

[0010] The beneficial effects of the present utility model are as follows: The rear end of the tool rest is installed on the tool holder of the lathe, and the front end of the tool rest is provided with an inclined inner wall. After the tool bar is installed in the first installation groove, the lower end of the tool bar will tilt backward at a certain angle. Coupled with the fact that the cutting blade can also tilt at a certain angle on the tool bar, the two angles are combined, enabling the cutting edge on the cutting blade to tilt to the required angle. When the tool rest feeds, the tool rest does not need to be cut obliquely and directly extends into the inner cavity of the workpiece parallel to the inner cavity of the workpiece. The tool rest will not interfere with the inner cavity, and various serrated threads can be processed. According to different processing angles, a tool rest with an inclined inner wall of different slopes can be used. Description of the Drawings

[0011] Figure 1 is the overall structure diagram of the present utility model;

[0012] Figure 2 is the cross-sectional view of the present utility model (right view perspective);

[0013] Figure 3 is the front view of the present utility model;

[0014] Figure 4 is the structure diagram of the tool rest in the present utility model;

[0015] Figure 5 is the structure diagram of the tool bar in the present utility model;

[0016] Description of the Reference Numerals:

[0017] 01, tool rest; 011, first installation groove; 0111, inclined inner wall; 012, first threaded hole; 013, clearance groove; 02, tool bar; 021, second installation groove; 022, second threaded hole; 023, inclined outer wall; 024, limiting boss; 03, cutting blade; 04, first fixing screw; 05, second fixing screw. Detailed Embodiments

[0018] The present utility model will be further described below with reference to the accompanying drawings:

[0019] Such as Figures 1 to 5As shown in the figure, a lathe tool for machining serrated threads includes a tool holder 01, a tool shank 02, a cutting blade 03, a first fixing screw 04 and a second fixing screw 05. The front end of the tool holder 01 is provided with a first installation groove 011 vertically penetrating the tool holder 01. The rear end of the first installation groove 011 is provided with an inclined inner wall 0111, and the inclined inner wall 0111 inclines backward and downward. A first threaded hole 012 is horizontally arranged on the right side of the tool holder 01, and the first threaded hole 012 communicates with the first installation groove 011. The tool shank 02 is correspondingly arranged in the first installation groove 011 and the rear end face thereof fits against the inclined inner wall 0111. The first fixing screw 04 is threadedly connected with the first threaded hole 012, and the left end of the first fixing screw 04 contacts the right end face of the tool shank 02. The left end face of the tool shank 02 contacts the inner wall of the first installation groove 011. Both the first threaded hole 012 and the first fixing screw 04 are provided in two groups. The cutting blade 03 is fixed to the lower end of the tool shank 02 by the second fixing screw 05.

[0020] The rear end of the tool holder 01 is installed on the tool post of the lathe. The front end of the tool holder 01 is provided with an inclined inner wall 0111. After the tool shank 02 is installed in the first installation groove 011, the lower end of the tool shank 02 will incline backward by a certain angle. Coupled with the fact that the cutting blade 03 itself can also incline by a certain angle on the tool shank 02, the two angles are combined, enabling the cutting edge on the cutting blade 03 to incline to the required angle. When the tool holder 01 feeds, the tool holder 01 does not need to be cut obliquely and directly extends into the inner cavity of the workpiece in parallel with the inner cavity of the workpiece. The tool holder 01 will not interfere with the inner cavity and can complete the processing of various serrated threads. According to different processing angles, the tool holder 01 with an inclined inner wall 0111 having different slopes can be used.

[0021] The included angle between the inclined inner wall 0111 and the vertical plane is 7°, which can meet the production requirements of most serrated threads.

[0022] A second installation groove 021 is provided on the right side of the lower end of the tool shank 02. A second threaded hole 022 is also horizontally arranged on the tool shank 02. The right end of the second threaded hole 022 communicates with the second installation groove 021. The second fixing screw 05 is threadedly connected with the second threaded hole 022. The cutting blade 03 is fixed in the second installation groove 021 by the second fixing screw 05.

[0023] An inclined outer wall 023 is provided on the left side of the lower end of the tool shank 02. The inclined outer wall 023 inclines rightward and downward, which can reduce the weight of the tool shank 02 and reduce the possibility of interference with the inner cavity of the workpiece. On the other hand, it can also enable light to pass through the inner cavity better, facilitating the detection equipment to detect the processing situation in the inner cavity.

[0024] A clearance groove 013 is provided at the lower end of the tool holder 01. The upper inner wall of the clearance groove 013 is a plane. A limiting boss 024 protruding backward is provided at the lower end of the tool shank 02. The upper end of the limiting boss 024 contacts the upper inner wall of the clearance groove 013.

[0025] By contacting the upper inner wall of the limiting boss 024 with the clearance groove 013, the position of the tool bar 02 can be restricted to avoid the deviation of the tool bar 02 during the machining process.

[0026] The above does not impose any limitation on the technical scope of the present utility model. Any modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A lathe tool for machining sawtooth threads, characterized in that: The tool holder comprises a tool holder, a tool rod, a blade, a first fixing screw and a second fixing screw, the front end of the tool holder is provided with a first mounting groove which vertically passes through the tool holder, the rear end of the first mounting groove is provided with an inclined inner wall, the inclined inner wall is inclined along the rear lower direction, a first threaded hole is horizontally arranged on the right side of the tool holder, the first threaded hole is connected with the first mounting groove, the tool rod corresponds to the first mounting groove and the rear end face is fitted with the inclined inner wall, the first fixing screw is threadedly connected with the first threaded hole, the left end of the first fixing screw contacts the right end face of the tool rod, the left end face of the tool rod contacts the inner wall of the first mounting groove, the first threaded hole and the first fixing screw are each provided with two groups, and the blade is fixed to the lower end of the tool rod by the second fixing screw.

2. A lathe tool for machining sawtooth threads according to claim 1, characterized in that: The included angle between the inclined inner wall and the vertical plane is 7°.

3. A lathe tool for machining sawtooth threads according to claim 1, characterized in that: A second mounting groove is provided on the right side of the lower end of the knife rod, and a second threaded hole is also horizontally provided on the knife rod. The right end of the second threaded hole is connected to the second mounting groove, and the second fixing screw is threadedly connected to the second threaded hole. The blade is fixed in the second mounting groove by the second fixing screw.

4. A lathe tool for machining sawtooth threads according to claim 1, characterized in that: An inclined outer wall is provided on the left side of the lower end of the knife rod, and the inclined outer wall is inclined along the lower right side.

5. A lathe tool for machining sawtooth threads according to claim 1, characterized in that: The lower end of the tool holder is provided with a clearance groove, the upper inner wall of the clearance groove is a plane, the lower end of the tool rod is provided with a limiting boss protruding backwards, and the upper end of the limiting boss contacts the upper inner wall of the clearance groove.

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