Evaluation of Uncertainty in Linear Plane Angle Measurement based on Coordinate Measuring Machines

According to the measurement method of linear plane angle based on coordinate measuring machine (CMM), establish a black box evaluation model for the uncertainty of CMM linear plane angle measurement, and analyze the sources of each uncertainty. Combining measurement examples, this paper elaborates on the uncertainty evaluation process of linear plane angle measurement based on CMM, calculates the extended uncertainty of linear plane angle measurement based on CMM, and provides a reference for the uncertainty evaluation of linear plane angle measurement based on CMM.