A kind of reducing pipe forming method

Abstract

The invention relates to a reducer pipe forming method. The method comprises the following process steps of step 1, blanking, and cutting a steel pipe into a required length; step 2, installing a core rod on a precision forging machine, enabling a blank of the steel pipe to penetrate through the core rod, and clamping and fixing the blank of the steel pipe on two clamping heads of the precision forging machine; step 3, programming the precision forging machine according to the appearance size of the reducer pipe to be processed and formed; step 4, realizing the precision-forging forming of the reducer pipe by the mutual action of the core rod and a hammer head of the precision forging machine on the blank of the steel pipe; and step 5, unloading the precision-forging formed reducer pipe, and entering subsequent machining procedures. The reducer pipe processed by the reducer pipe forming method has the advantages that the uniformity of metal flow direction is good, the tissue performance of material is obviously improved, the strength and the rigidity are greatly improved, and the service life is greatly prolonged; in the whole process, the chip-free forming is realized, the material consumption is reduced, and the cost increase caused by the subsequent processing is avoided; and a process for processing the reducer pipe has the advantages of simplicity, reliability and high efficiency.

Description

technical field [0001] The invention relates to a forming method of a variable-diameter pipe fitting. Background technique [0002] The traditional driving half shafts for automobiles generally use solid variable diameter shafts, which can also better meet the driving requirements of automobiles. However, compared with hollow variable diameter shafts, the frequency orientation of the left and right solid half shafts is difficult to achieve. Consistent, thus affecting the driving comfort of the vehicle, at the same time, the life of the solid axle is relatively low, and it also increases the weight of the vehicle. From the perspective of economy, the solid axle is obviously at a disadvantage. Therefore, the hollow variable diameter shaft has gradually become the main structural form. The hollow variable diameter shaft can reduce the weight of the vehicle, save materials, reduce fuel consumption, and improve the comfort and life of the vehicle. [0003] At present, the proces...

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Problems solved by technology

[0004] In order to solve the technical problems existing in the prior art that the processing technology of the variable diameter tube is complex, and the welding process is prone to quality problems, waste of materials, and high processing costs, the purpose of the present invention is to provide a method for forming a variable diameter tube, through The metal flow direction of the variable diameter tube produced by this method has good consistency, and the material structure and performance have been significantly improved. At the same time, the strength, stiffness and life of the variable diameter tube have been greatly improved, and the whole process is chip-free forming, which reduces material consumption. , avoiding the cost increase brought by subsequent processing, and the processing technology of the variable diameter tube is simple, reliable and efficient

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