The Study On Online Internal Diameter Measuring System For The Bearing

The bearing is the most extensive machine components in the mechanical industry, the level of its precision influences performance of the whole equipment directly. However, the measure method of bearing is off-line more at present, and the problem of this is low efficiency, bad precision, high rejection rate. To this current situation, this paper has studied and designed the online detection system of internal diameter of bearing. This system can show the diameter of processing in time and process the surplus, and link with numerical control grinding machine, finish roughly grind, finishes grind to the work piece, only rubs and rubs the control that is pared and stopped, improve the machining accuracy of the bearing and production efficiency of enterprises.This paper has studied the meaning, current situation and present domestic and international development trends of the detection technique of the bearing of detection. On the basis of analysis and comparing various kinds of that measures the method dailily, combine the bearing and rub and pare the characteristic in the course and working environment, have confirmed the best measurement method and algorithm of the online detection system of internal diameter of the bearing, have designed the measurement mechanism that the internal diameter of the bearing measured online and carried on error analysis to it.This paper has designed the on-line measuring system of internal diameter of bearing is an electromechanical system, that based on MCS-51 Single Chip Microcomputer, it use the pneumatic displacement sensor to gather workpiece inside diameter change. AT89C51, CPU of microcomputer system, handles a reason to collecting the data arriving at being in progress, gives 8279 keyboard/displays the key-in carrying out display, and being able to respond to. The hardware of the measuring system is very concision, the circuit is succinct and the PCB is small. The display of this system is distinct and the stability is very high.The design of the software system utilizes Keil C51 language to carry on programming, adopt the module to design, the realization of each function module appears in the form of subprogram, the main program is transfered every module , finish the systematic function. This software system gives full play to the advantage of Keil C51, having well utilized its structural and module, the procedure written is easy to understand and maintain, there is very good transplantation, the algorithm is clear, the procedure is succinct .Finally, have tested the internal diameter of the rolling bearing using this system. On the basis of experimental data, it has exactness and practicability of this system.