With the continuous development of the social industry, the machinery industry has also been greatly improved. As an important part of the machinery manufacturing industry,
Machining processes have a key impact on the accuracy and quality of parts. Therefore, in the development of machining processes In the process, it is necessary to make a reasonable selection of the processing technology and choose a more stringent processing control method to ensure the processing quality and meet the relevant accuracy standards and requirements of the parts. This article mainly analyzes and explores the impact of precision machining in machining. Keywords: mechanical processing; precision processing and manufacturing influence.
Machining technology is the basic link for processing the entire parts. In the specific processing process, there will be corresponding forces and heat. These factors will affect the entire process system, and then have a certain impact on the accuracy of the parts. . 1 Overview of the machining process The related concepts involved in the machining process include the machining process, the machining process and the machining process regulations. These three are the expressions of different aspects of machining process. The machining process is mainly to change the shape and size of the blank parts to make the parts meet the requirements in terms of appearance; the machining process focuses on the steps of the parts or workpiece manufacturing and processing, which is to make the part blanks gradually conform to the standard parts A process of mechanical processing is generally a process from rough machining of parts to finishing, then from finishing to assembly, then from packaging to inspection, and finally packaging.
The machining process regulations mainly refer to the requirements of various aspects of the machining process and related processing standards during the processing of the parts, as well as the process documents generated during the selection of the machining process, because the selection of the machining process is based on the actual situation of the enterprise. The production situation is determined, and the quality of the company's mechanical processing staff and the equipment conditions for parts processing will be specifically considered in the selection process. 2 The influence of geometric accuracy in the machining process on the accuracy of parts is analyzed from the machining process itself. The accuracy of the machine tool will have a direct impact on the accuracy of the entire system. Therefore, the specific speed and change of the relevant machining tools , Are controlled and operated by the machine tool, and have a direct effect on the parts. Sometimes due to the accuracy problems of the machine tool itself, the accuracy of the corresponding dimensions and appearance of the parts may be insufficient. For example, there is an error in the rotation of the spindle. The rotation error of the spindle of the machine tool will affect the processing surface of the parts. The geometric accuracy has a direct decisive effect. At the same time, slight swings in the corresponding radial and axial aspects of the spindle will affect the accuracy of the processing of different parts. For example, the circular runout in the pure radial direction will affect the processing of parts. Corresponding roundness errors will occur. Although the plane errors caused by such errors have an impact on the end faces of the parts; if the spindle has a pure angular swing, it will be affected during the specific processing of the parts. The corresponding cylindricity causes an error condition; and if the spindle has a convoluted condition in the axial direction, when the parts are processed in a specific process, the end face will also have a corresponding flatness error condition. Therefore, in the specific mechanical During the machining process, the accuracy of the related installation, manufacturing and design of the main shaft should be improved, and the errors in the main shaft rotation process should be reduced to the greatest extent, so as to achieve the purpose of improving the accuracy of the parts. In the actual machining process, the parts need to be fixed accordingly. In addition, a certain distance relationship between the tools should be maintained during the fixing process. Therefore, the use of fixtures must be professional.
As for the error generated by the fixture, it usually mainly comes from the error in the specific manufacturing process when it leaves the factory, and during use, the specific installation process, positioning error and wear error, etc., when the fixture is fixed In the process of parts, there are often actual conditions of reaction force, so far, it will cause mechanical deformation and strain.
