The testing of the internal taper thread in joint is the key measurement on spot. The automatic CAT system has been developed for testing key parameters of internal thread on the machine tool. The six key parameters of the 2 7/8EU internal taper thread could be given by the CAT system. A simple and effective method has been developed for the calibration of the sensors in the CAT system. It is called tracing standard part method, which has the simple procedure with high precision. The tooth depth of the joint internal taper thread given by the manual gauge has been chosen for the coefficient calibration of the range sensor in the CAT system. The calibration method has been verified on the spot with manual gauge. It has been shown that this novel calibration method could meet the demanding of the user's precision.
A computer-controlled and robotized bio-micromanipulation system was developed. Robotic technology was made use of to build the system with high accuracy and autonomous ability, in line with the consideration that the biological micromanipulation processes its own characteristics. As control strategies at respective level in control scheme, visual servo and online real-time path planning are also the effective means to realize automation of micromanipulation. A dynamic look-and-move approach based on image feature was applied to visual servo in the light of the specific system structure. A Sub-goal Guiding method suited to the operation conditions of cell micromanipulation was proposed to execute online real-time path planning. Experiment results have showed the effectivity of the methods and the practicability of the micromanipulation system.