One of the processes in stamping is called stretch forming. This process is one of the main processes of stamping. This stretching is used in all metal stamping processes. This molding can be processed into different shapes everywhere, which can be cylindrical, rectangular, stepped, spherical and other irregular shaped metal parts. Stretch forming is done with stamping equipment. Let's take a look at the knowledge of stamping and drawing processing.
The stretching process of the stamping equipment includes a variety of position stretching work. The stretching is to use a platen device, and use the punching force of the punch to pull part or all of the flat plate into the cavity of the concave mold to form a container with a bottom. . The processing of the side wall of the container parallel to the drawing direction is a simple drawing processing, and the drawing processing of conical (or pyramidal) containers, hemispherical containers and parabolic containers, etc., also includes expansion processing. There is also re-drawing, which is deep-drawing products that cannot be completed by one-time drawing. The formed products need to be drawn again to increase the depth of the forming container. There is also a reverse drawing process, which is a process of reverse drawing the drawn workpiece in the previous process, turning the inside of the workpiece into the outside, and making the outer diameter smaller. There is also thinning and drawing processing, which is to use a punch to extrude 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 becomes smaller, and the wall thickness becomes thinner, which not only eliminates the wall Thickness deviation, and make the container surface smooth.
Stamping and stretching are divided into different processing types according to different forming shapes. There are cylindrical stretching, elliptical stretching, rectangular stretching, mountain stretching, mound stretching, belt stretching. Flange hemispherical drawing, flange drawing, edge drawing, deep drawing, tapered drawing, rectangular redrawing, surface forming, step drawing, reverse drawing Sixteen types of processing: processing, thinning and drawing processing, and panel drawing processing.
When we are doing metal stamping and drawing, we need to process according to different processing types, and the processing technology of different types will be different. Therefore, if you want to process good
Metal Stamping Parts, you need to do it well in each processing process.
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