Punching technique for cambered surface punch forming

Abstract

The invention discloses a punching technique for cambered surface punch forming. The punching technique comprises the following steps: a) punching and trimming: performing punching blanking processing on a to-be-processed workpiece, and then blanking an edge of the workpiece, thereby acquiring the shape and size required by the workpiece; b) raising and pressing a rough edge: raising the workpiece, and then performing rough edge pressing treatment on a mould after raising; c) forming radian: utilizing the upper and lower mould characteristics of a mould to finish the forming of the workpiece from a plane to a cambered surface; d) step forming and bending: performing step treatment on the formed cambered surface and bending the opposite angles on the two sides of the cambered surface, wherein the bending angle is at 30 degrees; f) laterally pushing and flattening: utilizing lateral pushing flattening devices on the two sides of the mould to laterally push and flatten the local surface of the workpiece. According to the technique, the structure is reasonable, the quality problem during a forming process of the cambered surface is effectively relieved, the precision of the formed cambered surface is ensured, the damage to the mould during the forming process is effectively reduced, and the production cost is lowered.

Description

technical field [0001] The invention relates to a stamping and forming process, in particular to a stamping process for arc surface stamping and forming. Background technique [0002] Mold is an important technological foundation of the manufacturing industry. In my country, mold manufacturing belongs to the special equipment manufacturing industry. Stamping die is a special process equipment for processing materials (metal or non-metal) into parts (or semi-finished products) in cold stamping processing, called cold stamping die. Stamping is a pressure processing method that uses a mold installed on a press to apply pressure to the material at room temperature to cause separation or plastic deformation to obtain the required parts. [0003] At present, most of the products stamped by stamping dies are mainly flat, and the stamping process mainly includes: drawing deep, punching, embossing, pressing rough edges, shaping, cutting off and other processes. The stamping process ...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the products stamped by stamping dies are mainly flat, and the stamping process mainly includes: drawing deep, punching, embossing, pressing rough edges, shaping, cutting off and other processes. The stamping process requires very high precision of the process. If one of the processes cannot meet the process requirements, the subsequent process will further increase the error of the workpiece, thus making the workpiece unusable and causing the workpiece to be scrapped

The stamping forming of the arc surface has higher requirements on the processing technology, because it is easy to produce gaps in the process of arc surface processing, and due to the continuous stamping process of the mold, the arc surface of the workpiece is not enough, and it is easy to produce arc surface deformation. At the same time, The process of embossing and punching on the arc surface is also an important issue in the forming process