Sheet bar class part hot blanking system with multi-station pressure cold rotary disc and process

Abstract

The invention discloses a sheet bar class part hot blanking system with a multi-station pressure cold rotary disc and a sheet bar class part hot blanking process. The system comprises an induction heating device, a hot blanking die device and a multi-station pressure cold rotary disc device; the hot blanking die device comprises a male die and a female die which are used in cooperation, and the upper end face of the male die is tightly attached to a male die base plate; a plurality of evenly-distributed rubber springs are connected to the lower portion of a male die fixing plate, and a stripper plate is arranged at the lower portion of each rubber spring; a plurality of grooves corresponding to multiple unloading bolt positions are formed in a male die upper plane; and each groove is provided with an elastic ejection pin and a positioning pin. The multi-station pressure cold rotary disc is composed of a stepping motor, an upper pressure disc, a lower pressure disc, hydraulic ascendingand descending rod and an air spraying device. By means of the sheet bar class part hot blanking system and process, the part shaping accuracy is improved, the hardness and the abrasive resistance arehigh, the part production efficiency is improved, and the production cost is saved.

Description

technical field [0001] The invention relates to the field of sheet metal hot blanking, in particular to a hot blanking system and process for sheet metal parts with a multi-station pressing and cooling turntable. Background technique [0002] Plate transmission parts are the most important components of the transmission system, and are mainly used in the transmission parts of automobiles, agricultural vehicles, trucks and other vehicles and the internal structure of other machinery. Its forming accuracy, strength and wear resistance all affect the transmission accuracy, transmission stability and service life of the transmission system, and then directly affect the safety and stability of automobile and mechanical operation. Due to the relatively poor operating environment of these plate transmission parts, long running time, relatively high frequency of use, large contact friction area, and the different production processes of each manufacturer lead to different production...

AI Technical Summary

Problems solved by technology

Although this method meets the requirements of subsequent installation and easy plastic forming, the hardness of the tooth-shaped part is low, the wear resistance is poor, the service life is short, and the production cost is high;

[0006] The second method: After cold blanking of plate parts, the parts are hardened as a whole by heat treatment process, the hardness is about 52-56HRC, and then the parts are welded with other parts by light welding process. Although this method makes the parts The hardness is high, but light welding is prone to defects, resulting in poor welding of the workpiece and low reliability;

[0007] The third method: After cold stamping, heat the plate parts locally or as a whole, and then use water cooling to harden the teeth, the mutual contact surface, or the whole. Although this process has a higher hardness of the tooth plate, However, during the heating and cooling process, due to the influence of temperature and phase change, the tooth shape is distorted, which affects the meshing accuracy of the teeth and the parts in contact with each other.

On the one hand, this process and mold are only suitable for high-strength steel parts that are first stamped and then punched and trimmed. The structure of the final formed part remains consistent, which improves the strength and hardness of the entire part and can only reduce the load during the punching process. , it cannot guarantee the punching accuracy and the quality of the shear area, and it is not easy for subsequent riveting; Oxidized skin

Images