Production technology for steering column

Abstract

The invention discloses a production technology for a steering column. The production technology comprises the following steps that firstly, a blank is prepared, the inner diameter d of the small-diameter end of the steering column, the outer diameter D of the small-diameter end of the steering column and the length L of the steering column serve as the benchmark, and a blank column with the inner diameter d, the outer diameter D and the length L is machined; secondly, end face machining is conducted, the inner circle of one end of the blank column is chamfered to form a chamfer C, the angle of the chamfer C ranges from 25 degrees to 35 degrees, the length of the chamfer is the thickness of the blank column, and the value of the roughness of a chamfered face is 0.4 or below 0.4; thirdly, phosphating is conducted, and the blank column with the machined chamfer C is subjected to surface phosphating; and fourthly, die bulging is conducted and includes die preparing and bulging machining, wherein die preparing includes manufacturing of a bulging male die and a bulging female die which are used for bulging machining, surface polishing is conducted on the machining face of the bulging male die, and the value of the roughness of the polished machining face is 0.05 or below 0.05. According to the production technology for the steering column, one-time bulging forming is adopted, and the production efficiency is high.

Description

technical field [0001] The invention belongs to the processing and forming technology of tubular parts, and in particular relates to a production technology of a steering column. Background technique [0002] The steering column is a steering mechanism used to connect the steering wheel and the steering gear. The steering column is a structure with a larger diameter at one end and a smaller diameter at the other end. The production and processing of the steering column can be completed by cutting, but The processing cost of cutting processing is high, and the strength requirement is difficult to guarantee. Therefore, chipless processing is usually used to complete it, such as bulging. First, a pipe string is cut according to the diameter of the small diameter end, and then one end of it is bulged through the bulging process. shape to form a large-diameter end, thereby forming a steering column structure with a different-diameter structure. During bulging molding, the materi...

AI Technical Summary

Problems solved by technology

Such a production and processing method cannot be used in large quantities in production, resulting in extremely low production efficiency

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