In the process of parts processing, the processing scheme will vary according to the requirements of parts or production conditions. Manufacturing the same parts in time will also lead to different process schemes of parts due to problems in production efficiency, economic benefits and so on. Therefore, when machining mechanical parts, the formulation of machining process flow of mechanical parts is very important.
1、 Production process
The production process is the process of turning drawings into products. This process is also the manufacturing process of parts. In production, the process of transforming raw materials or semi-finished products into products is called production process. This process includes the following:
1. Technical preparation process: many aspects need to be prepared before machining mechanical parts, including market research, prediction, identification of new products, process design, standardization review, etc.
2. Technological process: This is a process that directly changes the shape, size or surface position of raw materials or semi-finished products. This process can make materials and semi-finished products into products. For example, the common liquid forming, plastic deformation forming, powder forming, cutting, welding, heat treatment, surface treatment, assembly and so on are all technological processes.
3. Auxiliary production process: this process is the auxiliary production activities required to ensure the normal production of mechanical parts. For example: process equipment manufacturing, energy supply and equipment maintenance, etc.
4. Production service process: although it is not directly related to production, it is a necessary process to support the production of parts, such as the organization, transportation, storage, supply of raw materials, product packaging and sales, etc.
The technological process is the main body of the production process. It can be completed in a factory, or it can be dispersed to different manufacturers through the principle of professional cooperation. For example, this method is used in the manufacturing of large mechanical equipment such as automobiles, instruments and aircraft, which are common in our life.
2、 Composition of process
The cutting process of parts is composed of many processes, among which the process is composed of station, work step, tool walking and installation.
1. Process: it refers to the part of the technological process that is continuously completed by a machine tool or a group of workpieces at the same working place.
2. Work step: in a process, the part where the machining surface of the workpiece, cutting tools and cutting parameters do not change in speed and feed rate is called work step.
3. Tool feeding: a layer of allowance cut by the tool on the machined surface is called one-time tool feeding. If it cannot be completed at one time, it can be cut together in several times.
4. Installation: the process that the workpiece is clamped (positioned and clamped) once is called installation. The multi-layer clamping includes two contents: positioning and clamping.
5. Station: relative to the fixed part of the tool or equipment, each processing position occupied by the workpiece is called station. Generally, the workpiece in a process is installed only once, and sometimes many times.
