Research On Intelligent Roundness Tester

The roundness tester is a highly precision instrument that is wildly used to measure the rotary workpiece in mechanical industry. Aged roundness testers usually records the round-error message by the curse, judges the round-error value by human-aim. Because these roundness testers have been used for a long time, they have a highly failure rate and their accuracy can not been insured. Integrate amply system , digitize record , computerized judge error , which have been usually implemented in the modern roundness measurement . A lot of modern roundness testers have mutifunctin which can measure article roundness, cylindricity and axes. We have got on a lot of research work for the advanced technology in this roundness testers innovation. We have gained a lot of technology outcome in computerized roundness testers technology.This thesis introduces the theory which is about my company (Ningjiang machine tool group ) roundness tester computerized innovation , the roundness tester imported from England in 1965. We costumized the advanced scheme which didn't breach the primary roundness system. The primary roundness system and the new roundness system can be applied after the roundness testers have finished computerized innovation. So this is befit to parallel errors of theroundness system. This provide for another reservation system when the new roundness testers is going to turn up failure. We have especially projected the Butterworth digit wave filter which fills our nation roundness filter standard gauge. We only provide simple 1 to 1500 undulation per revolution(upr) in the hardware amplification circuits. So the new roundness tester electrical circuit becomes very easy in the design and debugging work . The precision and stability circuits have been improved greatly. It is a new technology that digit wave filter deals with roundness analogue sign in the world. There are four algorithms which deals with roundness sign according to the nation standard gauge. The data processing includes: least squares mean circle (LSC), minimum circumscribed circle (MCC), maximum inscribed circle (MIC), and minimum zone circles (MZC).According to the roundness tester feature , we have developed the roundness tester new function which can measures article cylindricity and axes. According to multistep error method , we have developed the program which can separate roundness tester principal axis error. According to the company condition, we have completed the job of separating roundness tester principal axis error. Precision of the instrument has been improved greatly. In order to improve the instrument' s accuracy and operation, reduce meter people job, we have especially designed the automatic scaling program.