3 common problems and solutions of stamping drawing parts

With the development of society and technology, stamping and drawing parts are widely used in our daily lives. When stamping and drawing parts are produced in mass production, various problems will occur due to various reasons. This article summarizes the experience and shares 3 common problems and solutions of stamping and drawing parts. 1. The shape and size of the stamping and drawing parts do not match the shape and size of the stamping and drawing parts are not consistent with the main reason is caused by spring and inaccurate positioning. In addition to taking measures to reduce springback, the reliability of blank positioning should also be improved. 2. Surface strain of stamping and drawing parts The surface strain of stamping and drawing parts is caused by improper material selection, low heat treatment hardness, poor finish, wear of die fillet, poor surface quality of bending blanks, excessive material thickness, and process plan selection Caused by unreasonable, lack of lubrication and other reasons. 3. Bending cracks of stamped and stretched parts (1) When the angle between the bending line and the rolling direction of the sheet metal does not meet the specified layout, the bending line should be perpendicular to the rolling direction when the one-way V-shaped bending is used; for the two-way bending, the bending line Try to be 45 degrees with the embossing direction. (2) The plasticity of the tensile parts is poor. (3) The bending radius is too small and the pickling quality is poor. (4) Insufficient lubrication-high friction. (5) The fillet radius of the convex and concave mold is worn or the gap is too small-the feed resistance increases. (6) The quality of the shear and blanking sections of the stretched parts is poor-burrs and cracks. (7) The thickness of the material is seriously out of tolerance-the solution to the difficulty of feeding: 1. The shape of the stamping and drawing forming process should be as simple and symmetrical as possible, and the shape should be drawn at one time as much as possible; 2. The parts that need to be stretched multiple times should be Under the premise of ensuring the necessary appearance quality, the response should have traces that can occur during the stretching process on the inside and outside; 3. Under the premise of ensuring the installation requirements, the response should have a certain slope of the side wall of the stretched part; 4. Pull The distance between the bottom of the extension piece or the edge of the hole on the flange and the side wall should be appropriate; 5. The fillet radius of the bottom and the wall of the extension piece, the flange and the wall, and the four corners of the rectangular piece should be appropriate; 6. The size of the mark cannot be marked together with the inner and outer dimensions. The sophisticated team has accumulated rich experience in metal drawing process. We use cutting-edge technology to effectively improve material utilization. For difficult deep drawing parts, special-shaped drawing parts and thinning drawing parts, we can provide customized services according to customer requirements. Welcome to email inquiries. [Related recommendation] Learn more: 精の corporate culture Learn more: Continuous improvement and innovation are the key factors for the survival of stamping companies Learn more: The development of the metal stamping processing industry