Dongguan Hardware tells you the development and application of stamping technology for precision stamping parts

The 40th anniversary of reform and opening up, the development of precision stamping parts can be said to be changing with each passing day! Dongguan Hardware tells you the development and application of stamping technology for precision stamping parts. (1) Ordinary press fine-blanking technology a. Refurbishment——Use a special refurbishment die to trim the punching surface of the blanking and punching blanks to obtain a straight, smooth and high-precision punching surface, including : Outer edge trimming, inner hole trimming, stacking trimming, vibration trimming, etc. b. Smooth punching-use special punching dies with special structures such as micro-gap or negative-clearance rounded edges to perform smooth punching of high-plasticity low-carbon steel and non-ferrous metal punching parts to obtain smooth and smooth high-precision punching section. Commonly used smooth blanking processes include: micro-clearance rounded edge smooth blanking, negative clearance smooth blanking, stepped punch fine punching, synchronous cutting and extruding fine blanking, extrusion fine punching, and burr-free blanking, etc. . (2) Fine-blanking technology of precision stamping parts by special fine-blanking machine a. The spirit of strong press plate-the use of strong press plates of different structures for blanking, reverse top and fine blanking (FB), including: popular use It is used in the production of fine blanking technology with strong edge blanking with V-shaped gear ring and less used fine blanking methods with serrated pressing plates, tapered pressing plates, and boss-shaped pressing plates...etc. b. Fine blanking of opposite dies-using the principle of plane cutting, the upper and lower corresponding pairs of punches and dies are used for punching according to the specified degree. It was invented by the Japanese in 1968 and has been promoted for production in Japan. Fine blanking technology. It is also used in our country but has not been popularized. c. Double movement and reciprocating fine blanking-not promoted and applied. In the production of various electromechanical and home appliance stamping parts on site, the actual needs and the number of blanking parts that can be used for overall fine blanking are limited. Moreover, a considerable part of the punching parts only need to be fine-blanked locally, especially as long as a small part of the group holes and group slots are fine-punched, it is more economical to apply ordinary press fine-blanking technology; for only local fine-blanking to obtain high-precision hole shapes The inner shape or part of the outer shape of the blanking parts with a distance between the holes, no burrs, and a smooth and smooth cutting surface can be smoothly punched to meet the requirements.