Types of drawing forming process for metal drawing parts

Hardware stretch parts are widely used in industry, and become more and more popular in people's lives with the development of manufacturing. Manufacturers of stretched parts need to have a thorough understanding of the principles and processes of stretch forming of stretched parts in order to better produce stretched parts. Precision-Focus on precision metal drawing forming for more than 10 years. Next, we will introduce the principle and process of metal drawing forming. There are two types of stretch forming 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 product stamping. The processed material undergoes plastic deformation and reaches a certain shape and size without breaking. Stretch forming is a stamping process that uses a mold to form a flat blank into an open hollow part. As one of the main stamping processes, the drawing process is widely used. The stretching process can be used to manufacture cylindrical, rectangular, stepped, spherical, conical, parabolic and other irregularly shaped thin-walled parts. If matched with other stamping forming processes, it can also produce more complex shapes. Use stamping equipment to carry out product stretching and forming processing, including: stretching processing, re-drawing processing, reverse drawing, thinning and drawing processing, etc. Stretching process: Use a platen device and use the punch's force to pull part or all of the flat material into the cavity of the die to form it into a container with a bottom. The treatment of the side wall of the container parallel to the stretching direction is a simple stretching treatment, and for the conical (or cone) container, the stretching treatment of the hemispherical container and the parabolic container also includes the expansion treatment. Re-drawing processing: For deep-drawn products that cannot be completed in one drawing processing, it is necessary to re-draw the molded product after the drawing processing to increase the depth of the formed container. Reverse stretch processing: In the previous process, the workpiece is stretched in the reverse direction, the inner side of the workpiece becomes the outer side, and the outer diameter becomes smaller. Thinning and drawing processing: Use a punch to squeeze the molded container into a cavity slightly smaller than the outer diameter of the container, thereby reducing the outer diameter of the bottomed container and reducing the wall thickness, which can not only remove the wall thickness deviation , Can also make the surface of the container smooth. [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