Punch forming process and mould for vehicle load sensing proportional valve support

Abstract

The invention discloses a punch forming process and mould for a vehicle load sensing proportional valve support. The process comprises the following steps of feeding, blanking, auxiliary hole punching, forming, cutting and assembly hole punching; and a forming mould is divided into an upper die and a lower die, and the forming mould comprises an upper mould board (3), a terrace die (5), a lower mould board (15), a female die fixed plate (9), a guide column (1) and a guide sleeve (2). According to the process and the mould, by the adoption of a novel cold punching process, the difficult problem of finished piece positioning is solved, and one-time forming through the forming mould is realized. By the adoption of the process and the mould, the design size and the use performance of a product can be continuously and stably ensured, the capacity is promoted, the production cost is lowered, the quality and the fatigue life of an irregular and complex forming piece are improved, an outlook of the product is excellent, and the requirements on design and use are totally met.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and relates to a stamping forming process and a mold for an automobile load-sensing proportional valve bracket. Background technique [0002] The function of the load-sensing proportional valve of the car is to obtain the ideal front and rear braking force distribution ratio, ensure the proper ratio of the front and rear wheel loads during the driving of the car, and ensure that the rear wheels are not locked when the car is in emergency braking. The load-sensing proportional valve uses the change of the distance between the vehicle body and the axle to change the spring preload, and adjusts accordingly as the vehicle load increases, so that an approximately ideal braking force distribution can be obtained under any load condition . Therefore, the load-sensing proportional valve bracket plays an important role in the distribution of vehicle braking force. According to traditional ...

AI Technical Summary

Problems solved by technology

Because the material in the flanging process is drawn and flowed, the material in the same area is deformed in different directions during bending, which makes it difficult to re-form the bending joint, often with cracks and sharp corners, and re-shaping cannot meet the product design and use requirements, especially The fatigue test life of the whole vehicle is not up to the standard

In addition, after flanging and bending, the position of the bolt hole is easily deformed, which is difficult to meet the requirements, and the arc edge connecting with the coil spring seat is irregular, which will easily cause welding difficulties and high scrap rate

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