Steering column machining method capable of preventing tail top damage in rotary swaging process

Abstract

The invention discloses a steering column machining method capable of preventing tail top damage in the rotary swaging process. The steering column machining method comprises the following steps that S1, blanking is conducted; s2, performing rotary swaging pretreatment; s3, rotary forging is conducted, specifically, the right end of the workpiece is forged into a taper section with the outer diameter gradually increasing rightwards during closing-in; s4, rough machining; s5, finish machining; s6, spline forming; and S7, thread forming. The taper section with the outer diameter gradually increased is additionally arranged at the right end, so that leftward horizontal force generated by the steering column in the rotary forging process can be balanced, and extrusion deformation of the spline tail and the positioning device in the rotary forging process of the steering column is prevented.

Description

technical field [0001] The invention belongs to the technical field of automobile steering gears, and in particular relates to a processing method of a steering pipe column for preventing tail damage during swaging. Background technique [0002] The steering column is a connecting part installed between the steering wheel and the steering gear, which has the functions of controlling the steering of the car and transmitting torque. In order to meet the driver's comfort requirements, the steering column can be adjusted up and down and forward and backward, and it also has the anti-theft lock function of the car. According to the working principle of the product, it can be divided into two types: mechanical type and electric power steering column. The structure of the steering column is generally composed of three sections from left to right: the inner spline section a, the lock sleeve section b, and the outer spline locking section c. Among them, the inner spline section a re...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the inner spline section a of the steering column is processed by swaging. Since the locking section c of the outer spline of the steering column is provided with a tapered section with a gradually decreasing diameter, the swaging During the process, the swaging force will decompose a leftward horizontal force, which makes it easy to damage or flang the tail of the inner spline section a (ie the left end of the steering column) during the processing process, which will directly Affect the effectiveness of the length of the internal spline and the assembly with the lower shaft of the steering column, thereby affecting the performance of the product, and thus affecting the safe driving of the vehicle

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