How to get the most accuracy out of your PCMM
Short abstract:
The purpose of the project presented in this paper is to evaluate and reduce the errors typical produced by a portable coordinate measuring machine (PCMM). The tools employed in this project were a 60-in., high-accuracy check master, a 1-in. precision sphere, and a FARO Quantum 8-ft PCMM. The scope of this work involves a typical mathematical model of the PCMM, the Denavit–Hartenberg (DH) matrix. In this paper, we offer a brief review of ASME B89.4.22 and ISO 10360-12; consider physical error contributors such as probe form and size, stem deflection, base and elbow deflection, and temperature; and look at the daily probe qualification process using a sphere. Best practices are also discussed.
