The cause and solution of bending precision stamping parts 'hardware'

Causes and solutions of bending precision stamping parts: 1. The shape and size do not match. The main reason is springing and improper positioning. In addition to taking measures to reduce springback, it is also important to improve the reliability of blank positioning. The positioning mode of the blank mainly has two types: the shape is the reference and the hole is the reference. The shape positioning operation is convenient, but the positioning accuracy is poor. The hole positioning method is not convenient to operate and has a narrow range of use, but the positioning is accurate and reliable. Under certain conditions, sometimes use the initial positioning of the shape to roughly control the blank within a certain range, and then use the hole position to position it to absorb the advantages of both, so that the positioning is accurate and easy to operate. To compress the blank, air cushion, rubber or spring are used to generate the pressing force, and the sheet material is pressed tightly before the bending starts. In order to achieve this goal, the ejection height of the pressing plate or the pressing rod should be made slightly higher than the plane of the die. 2. Surface scratches (pulling) scratches The main causes of surface scratches are improper selection of materials for the working part of precision stamping parts, low heat treatment hardness, abrasion of the corners of the die, poor finish, and poor surface quality of the curved blank (rust, scarring, etc.) , The thickness of the material is too poor, the process plan is unreasonable, and the lubrication is lacking. If you want to know more, welcome to consult