Arc-cutting mould for spiral spring seat of automobile rear axle and arc-cutting process for arc-cutting mould

Abstract

The invention relates to a mold for cutting a circular arc of a helical spring seat of an automobile rear axle, which comprises an upper mold and a lower mold. There is a punch backing plate, a punch is set on the punch backing plate, a groove is arranged horizontally in the middle of the punch backing plate, a connecting rod is horizontally slid in the groove, and a pre-pressing device is arranged under the connecting rod. The two ends are respectively equipped with a large arc positioning block and a small arc positioning block, and the inner end faces of the large arc positioning block and the small arc positioning block are slidably connected with the outer end faces of the punch and the punch backing plate. The mold adopts the method of "elastic clamping in the horizontal direction and straight cutting in the vertical direction". Through the reasonable design of semi-circular positioning guide blocks, it not only simplifies the mold structure, but also meets the positioning requirements of the product in the front, rear and left and right directions.

Description

technical field [0001] The invention belongs to the field of mechanical processing, and relates to an arc-cutting die for an automobile coil spring seat and a matching arc-cutting process. Background technique [0002] The helical spring seat is one of the important parts on the automobile drive axle. Its bottom is connected with the drive axle body, and the upper end carries the automobile coil spring to bear the vertical load. When the impact force of the road on the wheel is transmitted to the coil spring, the coil spring deforms, absorbs the kinetic energy of the wheel, and converts it into the potential energy of the coil spring, thereby alleviating the impact of the ground impact on the vehicle body. Therefore, as a supporting body, the coil spring seat has an important influence on the stiffness characteristics of the entire rear suspension, which directly affects the connection strength and the ride comfort and stability of the car. The concentricity and height di...

AI Technical Summary

Problems solved by technology

The concentricity and height difference requirements of the two arcs at the bottom of the coil spring seat are relatively high, and because the distance between the large arc and the upper plane is too small, and the processing of the spiral shape is complicated, if the inclined wedge type cutting arc is used, the die blade The wall is too thin, the strength is not enough, and the production is difficult, and the processing cost is high, so there is a certain risk

Images