Hollow ball pin shaft with supporting cushion blocks and manufacturing method

Abstract

The invention discloses a hollow ball pin shaft with supporting cushion blocks and a manufacturing method, and particularly relates to a thrust rod ball pin shaft for a vehicle suspension. The thrustrod ball pin shaft is characterized in that the ball pin shaft is of a through hole hollow structure, and the hole-carrying cushion blocks are pressed inside shaft heads at the two ends respectively,and are in shapes of circular rings or hole-carrying rectangular blocks, and cooperate with hollow opening parts of the shaft heads of the two ends of a ball pin, so that bolt pretightening force generated when the thrust rod ball pin shaft is installed is borne, and the hollow shaft heads are prevented from being crushed. The manufacturing method of the hollow ball pin shaft with the supporting cushion blocks is characterized by comprising the steps of adopting a seamless tubular product as the raw material for the hollow ball pin shaft, and carrying out a series of working procedures of spinning or axial squeezing for necking and diameter reducing, shaft end flattening and preforming, pressing of the cushion blocks into shaft end ports, pre-stamping of shaft end mounting holes, expanding, squeezing and shaping of the shaft end mounting holes and heat treatment, and has the advantages that the production process is short, the product lightweight effect is good, and the comprehensive performance is high.

Description

technical field [0001] The invention relates to a metal ball pin shaft of a ball joint for automobile suspension, in particular to a thrust rod ball pin shaft of a balance suspension suspension of a commercial vehicle. Background technique [0002] Various spherical joints are widely used on automobile suspensions, and the components linked by the spherical joints allow a certain range of torsional swing. Such as automotive thrust rod spherical joints, used in various commercial vehicles, engineering vehicles and special vehicles with balanced suspension. The thrust rod is a two-force rod that constrains the extreme position of the axle and frame, and plays a role in ensuring that the wheels are on the correct track when the vehicle is running. The thrust rod is composed of a shaft, a rod head and a thrust rod ball joint or a thrust rod joint which is press-fitted inside the rod head. The thrust rod ball joint or joint is composed of a metal ball pin in the middle, an elas...

AI Technical Summary

Problems solved by technology

The traditional ball pin shaft manufacturing method is generally forging, which is a solid overall structure, which is difficult to meet the increasingly high lightweight requirements of automobiles, and the overall heat treatment consumes a lot of energy and costs high

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