Parallel machine tool swing angle deviation automatic detection and compensation method based on measuring head

The invention discloses a parallel machine tool swing angle deviation automatic detection and compensation method based on a measuring head, and the method comprises the following steps: 1), installing a measuring head fixing pedestal on a workbench, installing the measuring head on the measuring head fixing pedestal, and respectively installing a long ball head and a short ball head in a tool magazine; 2) executing the compiled measurement program to enable the measuring head to respectively measure the spherical center coordinates of the long ball head and the short ball head, and calculating the swing angle deviation through the spherical center coordinate positions of the two ball heads; and (3) the calculated deviation value is used for aligning the swing angle position of the machine tool, the Z-axis coordinate variable quantity before and after swing angle alignment is calculated, the variable quantity is a swing angle deviation compensation value, a numerical control system can be directly compensated