Abstract��A German productionl ( Hommel ) T8000 surface roughness measuring instrument can not be used after a few years. Here are the main performances: measuring sensor control cannot move around and sensor failed to detect, and the whole machine can not detect automatically. On the basis of the mechanical structure and electrical connection analysis of inspection, the final results showed: the LV scanned the driving box, and because of the internal guide rod rust spots and screw surface pollution, axial movement of the slider impurities of mechanical clamping occurred. In electrical, because the sensor connector pin misalignment leads to abnormal circuit, the sensor does not work and no signal output. After part cleaning up and fueling of mechanics and calibration of sensor connector, the equipment has been restored completely and can detect automatically from start to the end.
2012, Vol. 30 
