Processing method of stamping stretch forming

Hardware stretch parts are widely used, not only in industry, but have become popular in people's lives with the development of manufacturing. Next, I will introduce the principle and process of stretch forming. There are two types of stamping processes in the stamping process, one is the separation process, and the other is the forming process. Separation process: The separation process refers to the process of separating the blank along a certain contour line to obtain a stamping part of a certain shape, size and cross-sectional quality. Stamping and forming: The forming process refers to the process of stamping parts in which the processed material undergoes plastic deformation to a certain shape and size without breaking. Stretch forming is a stamping method that uses a mold to form a flat blank into an open hollow part. As one of the main stamping processes, stretching is widely used. The drawing process can be used to make cylindrical, rectangular, stepped, spherical, conical, parabolic and other irregularly shaped thin-walled parts. If it is matched with other stamping forming processes, it can also produce more complex shapes. . Click to add a picture description (maximum 60 characters). Use stamping equipment to perform product stretch forming processing, including: stretching processing, re-drawing processing, reverse stretching, and thinning and stretching processing. Stretching processing: using a platen device and using the punching force of a punch to pull part or all of the flat material into the cavity of the concave mold to shape it into a container with a bottom. The processing in which the side wall of the container is parallel to the stretching direction is a simple stretching processing, while the stretching processing of conical (or pyramidal)-shaped containers, hemispherical containers, and parabolic surface containers also includes expansion processing. Re-drawing processing: that is, for deep-drawn products that cannot be completed by one-time drawing processing, it is necessary to re-draw the formed products after drawing processing to increase the depth of the formed container. Click to add a picture description (up to 60 characters) Reverse stretch processing: Reverse stretch the stretched workpiece in the previous process, the inner side of the workpiece becomes the outer side, and the outer diameter of the workpiece is reduced. Thinning and drawing processing: Use a convex mold to squeeze the formed container into a concave mold cavity slightly smaller than the outer diameter of the container, so that the outer diameter of the container with the bottom is reduced, and the wall thickness is thinned, which eliminates the deviation of the wall thickness, and Make the surface of the container smooth. The main products processed by metal drawing manufacturers are: metal stamping parts, stainless steel stamping parts, precision stamping parts, drawing parts, automobile drawing parts, lighting accessories, metal shrapnel. Processed products are used in: electronics, electrical appliances, sports equipment, automobiles, packaging, machinery accessories... etc. The article recommends the main points of stainless steel drawing processing (2) Previous: Stamping process of diesel engine fuel tank