Output shaft sleeve inner hexagonal hole broach positioning tool

Abstract

The utility model discloses an output shaft sleeve inner hexagonal hole broach positioning tool, which belongs to the technical field of broaching machine processing and comprises a base, one end of the base is connected with a positioning guide sleeve, the positioning guide sleeve is of an axial hollow structure, a broach direction positioning hole is formed in the center of one end, close to the base, of the positioning guide sleeve, and an output shaft sleeve mounting groove is formed in the other end of the positioning guide sleeve. And a cutter handle positioning hole is sunken. Compared with the prior art, the tool has the advantages of being simple in structure, convenient to operate and capable of guaranteeing that the position of the inner hexagonal hole of the output shaft sleeve meets requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of broaching machine processing, in particular to a broach positioning tool for a hexagonal hole in an output shaft sleeve. Background Art

[0002] The output sleeve is an important external connection component in one of our torque-limiting clutch products. Its connection form is a hexagonal hole connection, and it also has a positioning pin hole to prevent the connecting shaft from axial movement. Figure 1 As shown, the inner hexagonal hole of the output sleeve must have a position requirement with the locating pin hole during processing, that is, one of the vertices of the inner hexagon must be located at the positive high point, otherwise the locating pin will interfere with the external connecting shaft during installation and cannot be installed.

[0003] When the current broaching machine is working, the sleeve at the end of the pull rod clamps the annular groove of the broaching tool head to perform the broaching operation. There is no circumferential positioning function for the broaching tool. It is relatively easy to achieve when processing products that have no relative position requirements, such as involute spline sleeves and rectangular spline sleeves. However, specific tooling is required for the above-mentioned hexagonal output sleeve. Utility Model Content

[0004] The utility model aims to solve the technical problem mentioned in the above background technology, and provides a circumferential positioning tool for a broach to ensure that the positions of the hexagonal hole and the positioning pin hole processed by the broach fully meet the requirements of the drawing.

[0005] The technical solution provided by the utility model is a broach positioning tool for a hexagonal hole in an output shaft sleeve, comprising a base, one end of which is connected to a positioning guide sleeve, the positioning guide sleeve is an axial hollow structure, a broach direction positioning hole is provided at the center of one end close to the base, an output shaft sleeve mounting groove is provided at the other end, and a tool handle positioning hole is sunken.

[0006] In some embodiments, the base is an axially hollow structure, and a guide sleeve positioning groove is provided at the center of one end thereof close to the positioning guide sleeve, and the positioning guide sleeve is correspondingly provided with a positioning outer circle with the base.

[0007] In some embodiments, the opening of the broach direction positioning hole is D-shaped, and an anti-interference groove is processed at the intersection of the straight edge and the arc edge.

[0008] In some embodiments, the inner wall of the output shaft sleeve mounting groove is provided with two opposite straight edges for cooperating with the end surface hole wall of the output shaft sleeve locating pin hole to ensure the direction of the output shaft sleeve.

[0009] In some embodiments, the tool handle positioning hole cooperates with the broach tool handle positioning axis to ensure the coaxiality of the broach and the workpiece to achieve center positioning.

[0010] In some embodiments, a hexagonal internal hole broach is also included, and a positioning flat head is provided at the handle end of the hexagonal internal hole broach, and the positioning flat head cooperates with the broach direction positioning hole to ensure the circumferential direction of the broach.

[0011] In some embodiments, outer corners of the positioning guide sleeve and the base are chamfered.

[0012] Compared with the prior art, the advantages of the utility model are: 1. The end of the broach handle is modified to limit the circumferential direction of the broach by cooperating with the direction positioning hole at one end of the positioning guide sleeve to ensure the direction of the inner hexagonal hole processing; 2. The output sleeve mounting groove is processed according to the outer shape of the inner hexagonal hole end of the output sleeve, and the end faces at both ends of the output sleeve positioning pin hole are the main positioning references, which cooperate with the corresponding positions of the positioning guide sleeve to ensure that the processed output sleeve has no circumferential displacement; 3. The base serves as the positioning chassis of the entire tooling. In addition to supporting the positioning guide sleeve, its more important function is to protect the flat head shaft end of the broach from directly touching the ground and causing damage during positioning pre-installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the output shaft sleeve precision turning part;

[0014] Figure 2 It is a schematic diagram of the half-section of the shaft of the output shaft sleeve precision-turned component;

[0015] Figure 3 This is a schematic diagram of a broach positioning tooling according to an embodiment of the utility model;

[0016] Figure 4 This is a vertical cross-sectional schematic diagram of a positioning guide sleeve according to an embodiment of the utility model;

[0017] Figure 5 for Figure 4 A right side schematic diagram of the positioning guide sleeve shown in ;

[0018] Figure 6 for Figure 4 A left side schematic diagram of the positioning guide sleeve shown in ;

[0019] Figure 7 It is a schematic diagram of a broach according to an embodiment of the utility model.

[0020] In the attached drawings: 1. Base; 11. Guide sleeve positioning groove; 2. Positioning guide sleeve; 21. Positioning outer circle; 22. Broach direction positioning hole; 221. Anti-interference groove; 23. Output shaft sleeve mounting groove; 231. Positioning straight edge; 24. Tool handle positioning hole; 3. Hexagonal inner hole broach; 31. Tool handle positioning shaft; 32. Positioning flat head. DETAILED DESCRIPTION

[0021] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0022] Combination Figure 3 As shown, when using this tooling, first align the positioning outer circle 21 of the positioning guide sleeve 2 with the guide sleeve positioning groove 11 of the base 1, insert the positioning guide sleeve 2 onto the base 1, and then Figure 1 , Figure 4 , Figure 5 As shown, align the locating pin end wall of the output shaft sleeve with the locating straight edge 231 of the output shaft sleeve mounting groove 23, insert the output shaft sleeve precision-turned part into the output shaft sleeve mounting groove 23 of the locating guide sleeve 2, and then start pre-installing the broach.

[0023] Combination Figure 7 As shown in the figure, hold the broach and make the flat head handle on the left side of the broach pass through the output shaft sleeve precision turning part, positioning guide sleeve 2 and the middle hole of the base 1 from right to left in sequence. Figure 4 , Figure 6 As shown, since the left tail end of the positioning guide sleeve 2 has an internal hexagonal broach direction positioning hole 22 corresponding to the flat head of the broach handle, the relative position of the broach and the output sleeve to be processed can be guaranteed after the broach passes through, and the handle positioning hole 24 of the positioning guide sleeve 2 cooperates with the broach handle positioning axis 31 to ensure the coaxiality of the broach and the workpiece to achieve center positioning.

[0024] Combination Figure 2 As shown, when the flat head end of the broach passes through the hexagonal broach direction positioning hole 22 at the tail end of the positioning guide sleeve 2, the broach's own weight (vertical assembly) and the human assembly force are used together to make the first row of broaching teeth of the broach and the 2*30° chamfer at the front end of the hexagonal reference hole in the fine-turned output sleeve produce a certain tight fit, ensuring that when the broach is pulled out of the positioning tooling in the subsequent sequence, the position of the output sleeve relative to the broach does not move.

[0025] Finally, the broach with the output sleeve attached is pulled out of the positioning tooling and assembled on the machine tool to process the output sleeve product with the internal hexagonal hole fixed in relative position.

[0026] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A broach positioning tool for a hexagonal hole in an output shaft sleeve, comprising a base (1), characterized in that: One end of the base (1) is connected to a positioning guide sleeve (2), and the positioning guide sleeve (2) is an axially hollow structure. A broach direction positioning hole (22) is provided at the center of one end close to the base (1), and an output shaft sleeve mounting groove (23) is provided at the other end, and a tool handle positioning hole (24) is provided downward.

2. The positioning tool for the hexagonal hole broach (3) in the output sleeve according to claim 1, characterized in that: The base (1) is an axially hollow structure, and a guide sleeve positioning groove (11) is provided at the center of one end thereof close to the positioning guide sleeve (2). The positioning guide sleeve (2) is correspondingly provided with a positioning outer circle (21) corresponding to the base (1).

3. The output shaft sleeve inner hexagonal hole broach positioning tool according to claim 1, characterized in that: The opening of the broach direction positioning hole (22) is D-shaped, and an anti-interference groove (221) is processed at the intersection of the straight edge and the arc edge.

4. The output shaft sleeve inner hexagonal hole broach positioning tool according to claim 1, characterized in that: The inner wall of the output shaft sleeve installation groove (23) is provided with two opposite positioning straight edges (231) for cooperating with the end surface hole wall of the output shaft sleeve positioning pin hole to ensure the direction of the output shaft sleeve.

5. The output shaft sleeve inner hexagonal hole broach positioning tool according to claim 1, characterized in that: The tool handle positioning hole (24) cooperates with the broach tool handle positioning shaft (31) to ensure the coaxiality between the broach and the workpiece, thereby achieving center positioning.

6. The output shaft sleeve inner hexagonal hole broach positioning tool according to claim 1, characterized in that: It also comprises a hexagonal inner hole broach (3), the handle end of the hexagonal inner hole broach (3) is provided with a positioning flat head (32), and the positioning flat head (32) cooperates with the broach direction positioning hole (22) to ensure the circumferential direction of the broach.

7. The output shaft sleeve inner hexagonal hole broach positioning tool according to claim 1, characterized in that: The outer corners of the positioning guide sleeve (2) and the base (1) are chamfered.

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