Research And Development Of Diameter Precision Grading Equipment Of Bearing Ball

With the development of industrial modernization and the prosperity of defense industrys, ball bearing is widely used in the industrial circle and the precision of ball bearing is under a higher requirement. Rolling ball is one of the most crucial components of ball bearing. In order to promote the precision of testing rolling ball during the production process, in this essay, based on measuringtechnique on diameter of rolling element both at home and abroad, the device which can measure the diameter and classify automatically has been developed based on the measurement of LDS. During the research, with the application of precision laser displacement sensor, precision electronic control turntable and precision manual adjustment Taiwan, which has been designed, was mechanical body structure and the integration of complete controller and machine. Consequently, on-contact high precision measurement and classification can be realized. Specific studies in this essay are as follows:The relative error of diameter measurement was defined as the foundation of rolling test and grouping through the recent ball bearings detection. It has been developed that three diameter detections and grouping device programs for the rolling ball. Then final decision was to consider the2 degrees of freedom arm of the feeding mechanism and Turntable positioning with automatic electric control group institutions as the overall program after the three-dimensional analysis of every program has been given. As a result, the program which has been proved to be compact, more precious and needless to operate manually, avoid personal error. Meanwhile, it can be used to detect and classify the rolling ball ranging from 3.5mm to 25mm owing to its removable components and adjustable structure.By analyzing the integrative controlling program, the industrial control computer was used as the host controlling computer. Additionally, the four-axis stepper motor motion control card and intelligent laser displacement sensor was integrated. Finally the measuring and control system is assembled.It is no longer impossible to have a better understanding of the size error due to the detailed introduction and reasonable classification which have been done. The final online debugging showed that the system can complete a serious of detections of rolling elements and classify them automatically with a sub-micron level precision.