Universal joint forging method and shaping mould

A technology of universal joints and molds, applied in the field of metal precision forging, can solve problems such as inconsistency, collapse of the edge of warm forging punches, and affect assembly, so as to ensure processing and assembly, and solve the effect of inconsistent R angle at the bottom of the cavity

Active Publication Date: 2013-02-06
江苏理研科技股份有限公司
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Problems solved by technology

Due to the serious wear of the warm forging die, the R angle of the edge of the warm forging punch coll

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  • Universal joint forging method and shaping mould
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  • Universal joint forging method and shaping mould

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[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] The "one embodiment" or "embodiment" referred to herein refers to a specific feature, structure, or characteristic that can be included in at least one implementation of the present invention. The appearances of "in one embodiment" in different places in this specification do not all refer to the same embodiment, nor are they separate or selectively mutually exclusive embodiments with other embodiments.

[0025] The present invention adds a shaping process for the bottom fillet (R angle for short) of the inner cavity of the forging blank in the traditional process, and uses a simple shaping die structure to reshape the R angle at the bottom of the cavity, which solves the inconsistency of the R angle of ...

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Abstract

The invention provides a universal joint forging method. The universal joint forging method comprises the steps of upsetting, reverse extruding, truning and finishing. The reverse extruding is to perform reverse extrusion on an upset blank to form a cylindrical blank with an inner cavity at one end and a groove at the other end; the finishing is to perform finish forging of the shape sizes of the inner cavity and the cylindrical blank on the cylindrical blank with the inner cavity at one end and the groove at the other end by adopting a shaping mould and a press machine; the shaping procedure of shaping rounded corners (for short, R corners) at the bottom of the inner cavity of the cylindrical forging blank to enable the R corners at the bottom of the inner cavity of the cylindrical forging blank to be consistent is added after the finishing procedure. Compared with the prior art, as the shaping process for the R corners at the bottom of the inner cavity of the forging blank is added on the basis of the traditional process, and the simple shaping mould structure is adopted to perform shaping on the R corners at the bottom of the inner cavity is adopted, the universal joint forging method, disclosed by the invention, has the advantages of solving the problem of inconsistence of the R corners at the bottom of the inner cavity of the forging blank in a common process and guaranteeing subsequent processing and assembling of the forging member.

Description

technical field [0001] The invention relates to the field of metal precision forging, in particular to a universal joint forging method and a shaping die. Background technique [0002] The universal joint, also known as the sliding sleeve, is a component of the driving device of the constant velocity universal joint of the automobile. The constant velocity universal joint mainly consists of a sliding sleeve, a three-pin shaft, a transmission shaft, a star sleeve, a cage, and a bell housing. The inner cavity of this product is evenly distributed in the inner hole by the arc surface, and the ballway is naturally formed in the inner hole. Because the constant velocity universal joint transmits heavy driving torque, it is in high demand with heavy load and high transmission accuracy. , It is also a safety piece, so its main parts are all made of precision forgings. During the assembly process, the three-pin shaft is put into the inner cavity of the universal joint and slides t...

Claims

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Application Information

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IPC IPC(8): B21K7/12B21D37/10
Inventor 蔡冰黄荣朱亚萍季成
Owner 江苏理研科技股份有限公司
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