This invention belongs to the field of integral bladed
disk size detection technology, and provides a three-
coordinate measuring machine (TCM) method for detecting the dimensions of a double-layer integral bladed disk. The method includes the following steps: Step 1, designing the TCM probe
structure based on the disk structure; Step 2, configuring the calibration ball orientation for the probe structure; Step 3, calibrating all probes and placing them in the probe replacement rack; Step 4, establishing the disk coordinate
system; Step 5, automatically running the program and calling the corresponding probes to scan the disk profile; Step 6, using the scanned data for dimensional evaluation. This invention efficiently completes the detection of the double-layer integral bladed disk profile, avoids missing disk dimensions, achieves
quality control, improves measurement efficiency and accuracy, and increases detection efficiency by 50%.