SELECTING THE FIRST APPROACH SPEED OF THE IGM-2K MEASURING HEAD WHEN CONTROLLING THE INSTALLATION ERROR OF HOUSING PARTS ON TNCD MACHINES

Theoretical analysis and experimental studies have been conducted on the automatic control process for installation errors of body parts using the IGM-2K measuring head on numerically controlled machines. The results of the experimental study are presented, detailing the actual values of control errors and the time costs associated with automatic approach methods using the IGM-2K for checking the base points of body part surfaces on these machines. An algorithm for selecting the first approach speed F1 for IGM-2K has been developed. In accordance with the developed algorithm, the optimal values F1 are determined for a different range of installation errors of body parts. An algorithm has been developed for selecting the IGM-2K approach method depending on the range of installation errors for body parts. A graph of the time costs of the measuring head approach methods depending on the range of installation errors for body parts is provided. In accordance with the developed algorithm, the optimal values of F1 have been determined for different ranges of installation errors for body parts. Thus, for the installation error range ∆i=0÷2 mm F1=300 mm/min, for ∆i=0÷5 mm, the optimal value is F1=400 mm/min. Analysis of the research results showed that the choice of the first approach speed using this algorithm for the IGM-2K reduces the control cycle time compared to the BV 4272-04 measuring head and the “Renishaw” measuring head by 1.5÷2 times, depending on the range of installation error of the body part on machines with a numerical control device.