Research On On-machine Measuring System For The Taper Of Composite Thin-walled Revolving Bodies

The application of complex material is increasing in industrial areas, especially in the manufacture of aviation and motor industrial. A new measuring instrument based on the principle for the solid of rotation such as radome has been developed and manufactured. The problem of taper test in special equipment has been solved.The control principle and the composition of the open CNC system based on IPC in the instrument and the module of test are presented in this paper.A kind of hardware platform, which regards IPC and industrial interface cards as the control core, is designed and constructed. According to needs of main function and auxiliary functions, the general layout of software and organizational arrangement of the function modules are planned and designed.The software system is developed with VC++. It's composed of manual function, hand-measure function, auto-collection and auto-save function, automatic data processing function, error evaluation and visual output. The system with the character of running stably, friendly interface, high intellectualized degree, could meet the demands of radome taper measurement. Furthermore, it's highly enhanced the flexibility and the automatization of radome taper test equipment.The measuring method and data processing are introduced in this paper. The specification of the system and machine tool are analyzed. The taper is obtained by measuring the generatrix of workpiece and fitting the line equation using the least squares techniques, then count the equalizing value of multi generatrixs.Some key technologies for the measuring error control and error compensation are discussed, for instance, the technique of software error compensation, artificial control and test of laser interferometer.All of the conclusions have been proved feasible through the manufacture progress.