Therefore, these materials are not suitable for precision machining, except for parts made of special materials or laser cutting. For precision parts processing, the process procedure is the technical document to guide production, and the process procedure must be economical and reasonable.
The process specification of a part is the processing method and step of the part. Content: processing technology (heat treatment process), the machine tool, clamping method, measurement method, machining allowance, cutting data and man hour quota used in each process of Dalian precision parts processing. Fill in the contents on a card in a certain form, which is the machining process specification, namely the machining process card.
The processing of precision parts is mainly about size requirements, such as the cylinder diameter. There are strict requirements. Only qualified parts with positive and negative errors within the specified requirements, otherwise they are unqualified parts; There are also specific and strict requirements for length, width and height, and there are also provisions for positive and negative errors. For example, if the diameter of an embedded cylinder (take the simplest basic components as an example) is too large and exceeds the allowable range of errors, it will result in failure to insert. If the actual diameter is too small and exceeds the lower limit of allowable negative values of errors, it will result in too loose and unstable insertion. These are unqualified products, or the length of the cylinder is too long or too short, which exceeds the allowable range of error. All these are unqualified products, which will be scrapped or reprocessed, which will inevitably lead to increased costs.
The so-called fine manufacturing of precision parts and molds is related to the development process and manufacturing results of molds, specifically, the rationalization of stamping process and mold structure design, the high precision of mold processing, the high reliability of mold products and the strictness of technical management. In fact, mold fine manufacturing is not a single technology, but a comprehensive reflection of design, processing and management technologies.