Precision measurement and analysis of CMM for runout
Around the process and measurement problems of the gear parts with a short stepped as the reference encountered in the actual production,processing programs are described in detail. Use CMM to measure the geometric elements of the process characteristics,analyze two measurement methods and the results are compared,provide effective date support to processing program. The defects of characteristic properties caused the reason of unstable measurement. By normal principles of"dense sampling point"can be positive or negative offset error in the measurement. And because the measuring span is big,making the measurement results are proportional to enlarge relations,need to determine the amplification times of the state of actual parts. Shorter reference hole geometric elements characteristic date collection provides an effective measurement method,and conducts numerous experiments and demonstration,suitable for a variety of precision measuring short reference hole.