Machining refers to the process of changing the overall dimension or performance of the workpiece through a kind of mechanical equipment. According to the difference of# machining methods, it can be divided into cutting machining and pressure machining.
Production process
The production process of the machine refers to the whole process of making products from raw materials (or semi-finished products). For machine production, it includes the transportation and preservation of raw materials, production preparation, blank manufacturing, parts processing and heat treatment, product assembly, commissioning, painting and packaging. The content of production process is very extensive. Modern enterprises use the principles and methods of system engineering to organize and guide production, and regard the production process as a production system with input and output.
In the production process, the process of changing the shape, size, position and nature of the production object to make it a finished product or semi-finished product is called the process. It is the main part of the production process. The technological process can be divided into casting, forging, stamping, welding, machining, assembly and other technological processes. The mechanical manufacturing process generally refers to the sum of the machining process of parts and the assembly process of machines. Other processes are called auxiliary processes, such as transportation, storage, power supply, equipment maintenance, etc. The technological process is composed of one or several sequential processes, and a process is composed of several work steps.
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) continuously completes the same workpiece (or several workpieces at the same time) on a machine tool (or a working place). The main feature of a process is that the processing object, equipment and operator are not changed, and the content of the process is completed continuously.
Work step is an integral part of the process divided according to the processing process. The utility model is characterized in that the machining surface and the tools, machine tools and cutting parameters used are unchanged.
Tool walking, also known as working stroke, refers to the process of cutting a layer of metal when the cutting speed and tool walking amount in the machining surface, tools and cutting parameters remain unchanged. Sometimes a work step only needs to take the knife once, but sometimes it needs several times.
To formulate the machining process, it is necessary to determine how many processes the workpiece will go through and the sequence of processes. A brief process that only lists the name of the main processes and their machining sequence is called the process route.
The formulation of the process route is to formulate the overall layout of the process. The main task is to select the processing method of each surface, determine the processing sequence of each surface, and the number of processes in the whole process. The formulation of process route must follow certain principles.