Using absolute method to measure the taper of conical shaft can directly measure the taper of imaging with tool microscope. The mirror image method is adopted, and the line aiming method is used instead of the line pressing method when measuring the length.
Relative method can be measured by laser interference small angle measuring instrument, taper can be measured by sine principle, and white light double beam interference aiming.
The indirect method uses CMM to measure. When measuring, try to select the sections near the two ends of the cone as the measuring sections, measure three coordinates on each section, and then calculate.