Fri Jun 02 18:34:07 CST 2023
Precision mold processing process generally has three methods: casting, cutting and special processing.
(1), casting processing Casting processing methods, mainly zinc alloy casting (for cold punching mold, plastic mold, rubber mold), low melting point alloy (for cold punching mold, plastic mold), Shaw casting method, beryllium copper alloy casting (plastic mold) and synthetic resin casting (for cold punching mold) and other methods of casting zinc alloy mold, low melting point alloy and synthetic resin casting mold, and for the preparation of the upper and lower templates for cold punching mold, the Preparation of blanks for large deep-drawing dies and frame parts. Related technical information of die steel: flame quenching steel, non-magnetic die steel, red stamping die steel, air-cooled steel, matrix steel, Japanese Daido die steel, Swedish YSP die steel, DC53, VIKING, S136, SLEIPNER, CALDIE, RIGOR, etc.
(2), cutting processing Cutting processing methods, mainly ordinary machine tool processing (for all types of mold processing), precision cutting machine tool processing, profiling milling machine processing, profiling planer processing, forming grinding machine processing, engraving machine tools, by the mold machine tools and CNC machine tools and other processing methods. According to the processing accuracy achieved by the mold parts, cutting process is divided into roughing process, finishing process and repair process.
①, roughing process The so-called roughing process refers to the processing from the workpiece to cut off most of the machining allowance, so that its shape and size close to the finished product requirements of the process. Such as rough turning, rough boring, rough milling, rough planing and drilling, its machining accuracy is lower than IT11, surface roughness Ra 6.3μm rough machining process is mainly used for low requirements, or the final processing of non-surface fit and as a pre-machining before finishing.
②. Finishing Finishing process is to cut off less machining allowance from the rough machined surface, so that the workpiece can achieve higher machining accuracy and surface quality. The common machining methods are finishing turning, boring, reaming, grinding, electric machining and profile grinding, etc.
③, the finishing process finishing process is to remove a small amount of machining allowance from the surface of the finished workpiece, in order to obtain a higher precision and surface quality parts, this process is generally referred to as the final process of parts processing, its accuracy and surface quality requirements should meet the requirements of the mold design drawings, such as guide pillars, guide bush grinding, work forming parts polishing, etc..
At present, all kinds of molds from rough and finish machining to assembly technology and debugging, are developed and equipped with a variety of forms and specifications, efficient precision machining equipment, basically realized the mechanization and automation of production.