Cardan universal joint, and manufacturing method for shaft sleeve for cardan universal joint

A cross shaft universal joint and manufacturing method technology, which is applied to shafts and bearings, couplings, bearing components, etc., can solve the problems of difficult assembly of cross shaft universal joints, low material utilization, inconvenient daily maintenance, etc. Machining efficiency, high material utilization, reducing the effect of machining processes

Active Publication Date: 2012-05-16
WANXIANGQIANCHAO CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the complex manufacturing process of the shaft sleeve of the cross shaft universal joint in the prior art, low material utilization rate and high manufacturing cost; and the assembly of the cross shaft universal joint is difficult, the lubrication effect is poor,

Method used

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  • Cardan universal joint, and manufacturing method for shaft sleeve for cardan universal joint
  • Cardan universal joint, and manufacturing method for shaft sleeve for cardan universal joint
  • Cardan universal joint, and manufacturing method for shaft sleeve for cardan universal joint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1, such as figure 1 , figure 2 , image 3 The illustrated cross-shaft universal joint includes a cross shaft 1. The four ends of the cross shaft 1 are respectively sleeved with sleeves 2. The material of the sleeves 2 is powder metallurgy material, specifically powder Metallurgical anti-friction materials. Powder metallurgy anti-friction material is to add anti-friction agent such as graphite or solid lubricant to powder metallurgy powder formula to reduce the friction coefficient between the surface of powder metallurgy anti-friction material. The powder metallurgy antifriction material has a porosity of 10% to 18% by volume, and the powder metallurgy antifriction material has lubricating oil in the pores. An oil seal 3 is provided between the inner surface of the sleeve 2 and the end of the cross shaft 1. And the inner surface of the shaft sleeve 2 is in the axial direction, and three functional sections are arranged inward from the open end. The first functi...

Embodiment 2

[0035] Example 2, such as Figure 4 As shown, the sleeve 2 in the above-mentioned cross-shaft universal joint can also be configured such that the powder metallurgy material of the sleeve 2 has a porosity of 55% by volume, and the pores of the powder metallurgy material also have open-cell foamed plastics. , The inner side of the shaft sleeve is also provided with a layer of open-cell foamed plastic 8, the pores of the shaft sleeve and the open-celled foamed plastic 8 on the inner side of the shaft sleeve are connected as a whole, and the pores of the open-cell foamed plastic 8 have lubricating oil. A layer of open-cell foamed plastic 8 arranged on the inner side of the sleeve 2 is provided with three straight oil grooves or spiral oil grooves, and a number of mutually independent circular, rectangular or diamond grooves 9. The outer surface of the sleeve 2 is provided with There is a completely dense copper-based powder layer.

[0036] The shaft sleeve in this example 2 is bas...

Embodiment 3

[0037] Embodiment 3, a method for manufacturing a shaft sleeve of a cross-shaft universal joint, the shaft sleeve is made of powder metallurgy material, and the manufacturing method of the shaft sleeve at least includes the following steps:

[0038] A: Preparation of raw material powder formula, using mechanical or physical chemical methods to prepare powder, such as atomization, reduction, electrolysis, etc. The composition of powder raw materials includes Fe, Cu, C and plasticizers, and the Fe content is 97.5% , Cu content is 1.6%, C content is 0.6%;

[0039] B: The block is formed, and the blank is made by film pressing;

[0040] C: Block sintering. Place the molded block in a high temperature furnace or vacuum furnace with a protective atmosphere for sintering. The sintering temperature is between 1150°C and the sintering time is 5 hours;

[0041] D: Finishing, finishing the inner diameter, outer diameter and bottom surface of the sleeve through the finishing mold;

[0042] E: Mach...

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Abstract

The invention discloses a cardan universal joint, and a manufacturing method for a shaft sleeve for the cardan universal joint, and aims to provide the cardan universal joint which has a simple structure, is convenient and easy to assemble and produce, good in lubrication system effect, and can be conveniently maintained daily, and the manufacturing method for the shaft sleeve for the cardan universal joint, which is simple and high in material utilization rate. The cardan universal joint comprises a universal joint pin; four end heads of the universal joint pin are respectively provided with a shaft sleeve which is made of a powder metallurgy material; and oil seals are arranged between inner sides of the shaft sleeves and the end heads of the universal joint pin.

Description

Technical field [0001] The cross shaft universal joint is a very important part of the transmission shaft of automobiles and construction machinery, which is used to transmit torque. The traditional cross shaft universal joint includes a cross shaft, shaft sleeve, oil seal, needle roller, and oil cup. The main processing technology of the bushing is as follows: bar cutting, heating and hot forging blanks, car inner and outer soles, inner and outer diameters, heights, chamfers, etc., carburizing and quenching, cleaning, tempering, rough and fine grinding outsoles, and rough grinding outside Round, grinding inner bottom flat, rough grinding inner circle, fine grinding inner circle, fine grinding outer circle, magnetic inspection, roller needle installation, oil seal, grease injection. The traditional cross-shaft universal joint has complicated processing technology, many machining process steps, low efficiency, and low material utilization, especially for the bushings of small cr...

Claims

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Application Information

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IPC IPC(8): F16D3/16F16C33/06F16C33/10F16C33/12B22F5/10B22F3/16C22C38/16
CPCF16D3/40
Inventor 高建中
Owner WANXIANGQIANCHAO CO LTD
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