Device for milling four sides of cross shaft part

By designing the fixture body and pressure cap structure, the four planes of the cross shaft part can be clamped and processed at one time, which solves the problem that traditional lathe fixtures require multiple clampings and improves machining accuracy and efficiency.

CN223557335UActive Publication Date: 2025-11-18HARBIN FIRST MACHINERY GRP
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Patent Information

Application Number
CN202423007438.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-06
Publication Date
2025-11-18
Estimated Expiration
2034-12-06

AI Technical Summary

Technical Problem

The cross shaft part requires four clamping operations in the lathe fixture to complete the machining of the four planes, making it difficult to guarantee perpendicularity and parallelism, which affects production efficiency.

Method used

A clamping body and a pressure cap structure were designed. The bottom of the clamping body is a connecting shaft, and the top has four positioning pins. The workpiece to be processed is placed between the positioning pins and fixed by the pressure cap and bolts, so that the processing of four planes can be completed in one clamping.

Benefits of technology

This technology enables the simultaneous clamping and machining of all four planes of the cross shaft part, ensuring perpendicularity and parallelism and improving production efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of machining, and discloses a device for milling four surfaces of a cross shaft part, which comprises a clamp body (1), a gland (2) and a bolt (3), a connecting shaft is arranged at the bottom end of the clamp body (1), four positioning columns are arranged at the top end of the clamp body (1), the diameter of gaps among the positioning columns is the same as that of a to-be-machined cross shaft part, the to-be-machined part is arranged among the four positioning columns, and the gland (2) is fixed to the top ends of the positioning columns through bolts (3) and used for fixing the to-be-machined part. Four planes can be machined through one-time clamping, and the problems that a cross shaft is not easy to clamp, and the perpendicularity and parallelism of the four faces of a part are not easy to guarantee during machining are solved.
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Description

TECHNICAL FIELD

[0001] The utility model belongs to mechanical processing technical field especially relates to a device for cross axle class spare milling four -sided. BACKGROUND

[0002] The cross axle is used for realizing the transmission of variable angle power and is used for the position needing to change the direction of transmission axis, is the "joint" part of the universal transmission device of vehicle drive system and is one of the key parts of vehicle rigid universal joint. The special structure of cross axle brings great difficulty to processing. The traditional processing method of four planes is turning by lathe fixture, needs four times of clamping to complete processing, and it is difficult to guarantee the perpendicularity and parallelism of product by repeated clamping, which seriously affects the production efficiency of product. SUMMARY

[0003] The utility model solves the technical problems that the cross axle part is turned by lathe fixture, needs four times of clamping to complete processing, it is difficult to guarantee the perpendicularity and parallelism of product by repeated clamping, which seriously affects the production efficiency of product.

[0004] To solve the above technical problem, the specific technical scheme of the utility model is as follows:

[0005] A device for cross axle class spare milling four -sided, including clamping concrete 1, gland 2, bolt 3, the clamping concrete 1 bottom end is set to connecting shaft, and the top is provided with four positioning columns, the clearance between the positioning column is same with the diameter of the cross axle class spare to be processed, and the spare to be processed is arranged between the four positioning columns, the gland 2 is fixed on the top of the positioning column by bolt 3 and is used for fixing the spare to be processed.

[0006] Further, the contact surface of the positioning column and the spare to be processed is the positioning surface.

[0007] The utility model has the advantages of realizing the processing of four planes by once clamping, solving the problems that the cross axle is not easy to clamp and the perpendicularity and parallelism of four surfaces of the spare are not easy to guarantee during processing. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 It is the top view of the device for cross axle class spare milling four -sided;

[0009] Figure 2 It is the top view of the device for cross axle class spare milling four -sided; Figure 1

[0010] Figure 3 It is the perspective view of the device for cross axle class spare milling four -sided;

[0011] Figure 4 It is the structure diagram of the clamping concrete; ​

[0012] The markings in the diagram are as follows: 1. Fixture body; 2. Pressure cap; 3. Bolt; 4. Part to be processed. Detailed Implementation

[0013] To better understand the purpose, structure, and function of this utility model, a more detailed description of this utility model is provided below with reference to the accompanying drawings.

[0014] like Figures 1-4 As shown, this utility model discloses a device for milling four sides of a cross shaft type part, including a clamping body 1, a pressure cover 2, and bolts 3; the bottom end of the clamping body 1 is configured as a connecting shaft, and the top end is configured with four positioning posts. The gap between the positioning posts is the same as the diameter of the cross shaft type part to be processed. The part to be processed is placed between the four positioning posts. The pressure cover 2 is fixed to the top end of the positioning posts by the bolts 3 to fix the part to be processed.

[0015] Furthermore, the contact surface between the positioning pin and the part to be processed is the positioning surface.

[0016] The process of using a device for milling four sides of a cross-shaped part is as follows: Figure 1 , Figure 2 As shown, the cross shaft is placed in the fixture and positioned using the φ19 outer diameter. After placing the pressure cap, the cross shaft is tightened with bolts. Then, the fixture is positioned and clamped in the machining center, and the four planes are machined by rotating the shaft 90° each time.

[0017] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a simple and easy-to-operate device for milling four sides of cross-shaped parts.

[0018] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and improvements without departing from the principles of the present invention, and these modifications and improvements should also be considered to fall within the protection scope of the present invention.

Claims

1. A device for milling four sides of a cross axle type part, characterized in that, It includes clamp body (1), gland (2), bolt (3), the bottom end of clamp body (1) is provided with connecting shaft, the top end is provided with four positioning columns, the gap between the positioning column is same with the diameter of cross axle class spare to be processed, the spare to be processed is arranged between four positioning columns, the gland (2) is fixed in the top end of positioning column by bolt (3), and it is used for fixing the spare to be processed.

2. The apparatus for milling four sides of a cross axle type part according to claim 1, wherein The contact surface of positioning column and spare to be processed is positioning surface.