The production process refers to the entire process of making a product from raw materials (or semi finished products). For machine production, it includes the transportation and storage of raw materials, production preparation, blank manufacturing, parts processing and heat treatment, product assembly, and debugging, painting and packaging, etc. The content of the production process is very extensive. Modern enterprises use the principles and methods of systems engineering to organize and guide production, and regard the production process as a production system with input and output. It can make the management of the enterprise scientific and make the enterprise more adaptable and competitive.
In the production process, the process of directly changing the shape, size and performance of the raw material (or blank) to make it into a finished product is called a process. It is the main part of the production process. For example, casting, forging and welding of blanks; heat treatment to change material properties [1]; machining of parts, etc., are all technological processes. The technological process is composed of one or several sequential processes.
Process is the basic unit of technological process. The so-called process refers to the part of the process that is continuously completed for one or a group of workpieces at a work site. The main features of a process are that the processing objects, equipment and operators are not changed, and the content of the process is completed continuously. The process can be divided into the following two steps:
Process 1: Turn the outer circle, end face, boring and inner hole chamfering on the lathe;
Step 2: Drill 6 small holes on the drilling machine.
In the same operation, the workpiece may be installed several times. The part of the process that the workpiece completes in one clamping is called installation. In operation 1, there are two installations. The first installation: clamp the outer circle with a three-jaw chuck, turn the end face C, bore the inner hole, chamfer the inner hole, and turn the outer circle. The second installation: U-turn, clamp the outer circle with a three-claw disc, car end faces A and B, and chamfer the inner hole.