Dexiong Plastic Hardware Products17 years dedicated to the production and processing of metal stamping parts Dexiong Plastic Hardware Products17 years dedicated to the production and processing of metal stamping parts 
Stamping the basic process of the basic stamping process blanking, punching, bending and drawing.
(1) blanking and punching blanking and punching is the process of separating the blanks. Blanking and punching process exactly the same, only different purposes. When blanking, the part to be separated is the finished product and the remaining periphery is scrap; the punching is to obtain the hole, the punched sheet is the finished product and the part to be separated is the scrap. Blanking and punching are collectively referred to as blanking. Punching punch and die have sharp edges, the punch and die between the plate thickness of 5% -10% of the gap to ensure that the incision neat and less burr.
(2) Bending bending is to make the workpiece get a variety of different shapes of angle. Bending mold on the workpiece bending part of the work should have the appropriate fillet radius r, in order to avoid cracking the workpiece bending, as shown in Figure 3-22.
(3) drawing: Drawing is the flat blank into a cup-shaped or box-shaped parts of the processing. Draw die punch and die edge should be made rounded to avoid the workpiece is cracked. There must be a slightly larger gap between the punch and die than the thickness of the sheet (typically 1.1-1.2 times the thickness of the sheet) to reduce friction. To prevent wrinkles, the edge of the blank is pressed with a pressure plate (blank holder), as shown in Figure 3-23. The actual product of the process of drawing will have a crack, see Sheet metal stamping is the use of die to the plate separation or deformation of the processing methods. Because the sheet does not need heating in most cases, it is also called cold stamping, also referred to as cold stamping or stamping. Commonly used plate for low carbon steel, stainless steel, aluminum, copper and its alloys, etc. They are high plasticity, low deformation resistance, suitable for cold stamping process. Sheet metal stamping easy mechanization and automation, high production efficiency; stamping parts accurate size, good interchangeability; smooth surface, without machining; Widely used in automotive, electrical appliances, instruments and aviation and other manufacturing industries.
