Abstract: In order to meet the requirements of online measurement and automatic assembly of head cone and connection ring, a seven-axis control system integrating assembly and measurement was designed based on LabVIEW software development environment, with "IPC-motion control card" as the control core component.On the basis of the electronic circuit construction, the control system carries out linkage control on the seven axes through the universal motion API architecture of masterpoint.The VISA module of data acquisition carries out data transmission with the coaxial laser displacement sensor through the RS232 serial port.Finally, the operation parameters and measurement results are generated into local files for storage.