Small flash warm forging forming method for cross joint

Abstract

The invention discloses a small flash warm forging forming method for a cross joint. The small flash warm forging forming method for the cross joint comprises the following specific steps that S1, blanking is conducted; s2, preheating and spraying a lubricant; s3, heating the cross joint blank; s4, performing the cross joint; s5, the cross joint is finally formed; s6, carrying out trimming treatment on the cross joint; s7, normalizing is conducted; and S8, product detection. When a bar material is lubricated, a coating film which does not generate harmful substances is adopted for lubrication, so that the environmental pressure is relieved, and the production cost is reduced; when the cross joint is preformed, the blank is subjected to in-mold extrusion to distribute the volume, so that the shape close to that of a forge piece is obtained, final forming is realized in a hot state of the material, the utilization rate of the material can be greatly improved, the production cost is remarkably reduced, and the production efficiency is high; forging is carried out in a warm forging state, and a lubricant is matched, so that the deformability of metal can be improved, the plasticity of the metal can be fully exerted, large deformation is obtained, and the machining difficulty is reduced.

Description

technical field [0001] The invention belongs to the technical field of auto parts, in particular to a ten-byte small flash warm forging forming method. Background technique [0002] Cross universal couplings are commonly used in automobiles, heavy machinery, construction machinery and precision machinery, etc., and are widely used. Ten bytes are the main accessories of cross universal couplings. They are used to connect two shafts that are not on the same axis, axis Continuous rotation with a large kink angle, the ten-byte joint is connected to the fork of the transmission shaft, so that the transmission shaft can be carried reliably and smoothly without abnormal noise, has a long service life, and is easy to maintain. The common ten-byte universal coupling is simple and compact in structure. , high transmission efficiency, used more in automobiles, or the mechanism that keeps the driving direction of the car to ensure that the car can run smoothly. The problem with the curr...

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Problems solved by technology

[0002] Cross universal couplings are commonly used in automobiles, heavy machinery, construction machinery and precision machinery, etc., and are widely used. Ten bytes are the main accessories of cross universal couplings. They are used to connect two shafts that are not on the same axis, axis Continuous rotation with a large kink angle, the ten-byte joint is connected to the fork of the transmission shaft, so that the transmission shaft can be carried reliably and smoothly without abnormal noise, has a long service life, and is easy to maintain. The common ten-byte universal coupling is simple and compact in structure. , high transmission efficiency, used more in automobiles, or the mechanism that keeps the driving direction of the car to ensure that the car can run smoothly. The problem with the current heavy-duty ten-byte production is that large-scale hot forging equipment is required, and the open die forging method is used for forging. A large flash will be formed, the material utilization rate is less than 50%, the production efficiency is low, and it is difficult to meet the requirements of mass production of automobiles. Based on the current situation, the small flash forming method of warm forging is used for forging, which is a kind of ten-byte manufacturing of heavy vehicles. Creative change, based on the ten-byte manufacturing process of the present invention, the multi-station press is used for production during the processing, which can be multi-station automated and efficient mass production

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