The machining process specification is one of the process documents that specify the machining process and operation methods of parts. It is a process document that, under specific production conditions, writes a more reasonable process and operation method into a process document in the specified form, and is used to guide production after approval.
Shenzhen machining process specification generally includes the following contents: process route of workpiece processing, specific contents of each process, equipment and process equipment used, inspection items and methods of workpiece, cutting amount, time quota, etc. In the process of formulating process procedures, it is often necessary to adjust the previously preliminarily determined contents to improve economic benefits. In the process of implementing the process specification, there may be unexpected situations, such as changes in production conditions, introduction of new technologies and processes, application of new materials and advanced equipment, etc., which require timely revision and improvement of the process specification.
Machining methods mainly include turning, pliers, milling, planing, inserting, grinding, drilling, boring, punching, sawing, etc. It can also include wire cutting, casting, forging, electric corrosion, powder processing, electroplating, various heat treatment, etc. Car: vertical car and horizontal car; The new equipment is CNC lathe, which mainly processes revolving bodies; Milling: vertical milling and horizontal milling; The new equipment is CNC milling, also called machining center; It is mainly used to process grooves and linear surfaces. Of course, it can also process cambered surfaces with two or three axes; It is mainly used to process the linear surface of the contour, and the surface roughness processed under normal conditions is not as high as that of the milling machine.
Commonly used mechanical processing equipment include digital display milling machine, digital display molding grinder, digital display lathe, electric spark machine, universal grinder, machining center, laser welding, medium wire walking, fast wire walking, slow wire walking, cylindrical grinder, internal grinder, precision lathe, etc., which can be used for turning, milling, planing, grinding and other processing of precision parts. Such machinery is good at turning, milling, planing, grinding and other processing of precision parts, and can process various irregular shaped parts, Machining accuracy can reach 2 μ m。
Working procedure is the basic unit of machining process. The so-called process refers to the part of the process that a worker (or a group of workers) completes continuously for the same workpiece (or several workpieces at the same time) on a machine tool (or a work site). The main feature of forming an operation is that the processing object, equipment and operator are not changed, and the contents of the operation are completed continuously.
