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.
Production technology for steering column
2016-02-03
Patent
Elektronische Ressource
Englisch
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