机械加工工艺基础知识（Basic knowledge of machining process）.doc

机械加工工艺基础知识（Basic knowledge of machining process） First, the production process and process The manufacturing process refers to the whole process of making the product from raw material (or semi-finished products). For machine production, including the transportation and preservation of raw materials, the preparation of production, the manufacture of rough parts, the processing and heat treatment of parts, the assembly and debugging of products, and the paint and packing. The production process is very extensive. Modern enterprises use the principles and methods of system engineering to organize production and guide production, and the production process is regarded as a production system with input and output. It can make the management of the enterprise scientific and make the enterprise more responsive and competitive. In the production process, the process of directly changing the shape, size and performance of raw material (or semifinished material) into a finished product is called a process. It is a major part of the manufacturing process. For example, casting, forging and welding of blanks, heat treatment of changing the properties of materials, [1], machining of parts, etc., all belong to the process. The process is made up of one or more sequential processes. Process is the basic unit of process. The term process refers to the process of continuous completion of one or a set of workpieces at a place of work. The main feature of a process is that it does not change the processing object, the equipment and the operator, and the content of the process is continuous. Two, production type The types of production are usually divided into three categories. 1., single production, production of a single part, rarely repeated production. 2. mass production produces the same parts in batches. 3. mass production, when the number of products manufactured is large, most workplaces are often repeated production of one part of a component. When making the technological pro