The performance of bearing parameters and index

Chapter 9 centerless grinding process system dynamic performance of this chapter, the research of centerless grinding process system dynamic performance issues, including the centerless grinding process system dynamic characteristics, dynamic stability, precision and movement characteristics of dynamic also deals with the peak of centerless grinding process system and appraisal method. 9. 1 centerless grinding process system dynamic characteristics of the concept of dynamic characteristics, including the amplitude-frequency characteristic and phase frequency characteristics of vibration system. Amplitude frequency characteristics show that the relationship between the vibration amplitude and vibration frequency; Phase frequency characteristics show that the vibration phase and the relationship between the vibration frequency. In mechanical industry, the amplitude-frequency characteristic and phase characteristic has extensive practical value. Such as, application in the grinding process control is a typical example. But, in the mechanical vibration and grinding vibration amplitude frequency characteristics, the main concern because it directly affect the machining surface harmonic distribution state '. In this section, will be aiming at dynamic characteristic parameter value B to study dynamic characteristics of centerless grinding process system and technology system, the influence law of various parameters on the workpiece surface harmonic, and on the basis of these control technology system i. e. surface harmonic features some practical measures. 9. 1. Centerless grinding process system vibration model 1. Centerless grinding process system in mechanical manufacturing theory, process system is a basic concept. It is generally believed by the machine tools, jig tool and workpiece system composed of four elements is called a process system. For through type centerless grinding, the four elements, workpiece and machine tool is obvious, cutting tool can be refers to the sand wheel; Fixture include plate and roller. In cut and program in centerless grinding, jig shall also include block. It must be pointed out that such a drunbility analysis of centerless grinding process system, the study of the specific process is very bad. In production practice, especially in centerless grinding process analysis and grinding machine design, often to main 'parts' to divide the process system of composition. Can be thought of: centerless grinding process system is to point to by grinding wheel parts, idler pulley system composed of a plate components and artifacts. Parts here include the machine parts, such as feeding machine structure, etc. 2. Process system vibration model of the vibration of centerless grinding process system can be divided into single degree of freedom vibration and multi degree of freedom vibration. Multi degree of freedom vibration for more than 2 and 2 degrees of freedom vibration. 159