Research On Key Technologies Of Control System Design For Automatied Drilling Machine Tool

Automatied drilling machine tool applied more widely in the metal processing, Especially in high strength, hi gh fatigue life of lightweight materials(carbon fiber composites, titanium alloy, aluminum alloy, etc) making hole on a curved surface, Solved the previous hand-made hole with low efficiency、 poor stability of process problems. The successful design of the the machine will greatly reduce the labor intensity of workers, Improve the production quality and production efficiency, increase the process stability.First of all, this paper summarizes the research and application status of the technology and equipment of automatic drilling machine tool at home and abroad. On the basis of analyzing the structure of aircraft fuselage skin, In order to realize high quality and high efficiency automatic hole making, in the middle and rear section, Framework of a set of integrated SIEMENS CNC system and PLC programming technology, laser normal measurement technology, displacement sensor online measurement technology and computer control technology automatic control system.In clear automatic drilling machine control system composition and function of the premise, based on PROFIBUS and PROFINET real-time field bus control system design the overall technical scheme, which includes hardware design scheme, the control unit electrical design, overall structure design and software design.According to the application and performance analysis of the control system of the automatic hole boring machine, the key technology of the project is studied. In view of the normal measurement and adjustment techniques and methods in the process of automatic hole making machine; And in the socket, the skin deformation, to ensure the accuracy of the countersink, put forward the technology and method of compensation in the direction of feed line.Finally, automatic drilling machine experiment platfo rm based on, expounds the drilling process, and the control system hardware design, software function, normal vector measurement and adjustment, countersink fossa depth compensation research content were tested. Experiment shows that the automatic drilling machine control system accuracy of hole lo cation is controlled within 0.2 mm, to the precision control in 0.5 degree, countersinking precision control in the +0.05 mm, drilling efficiency for hole 4 / min, can greatly improve the aircraft skin hole quality and efficiency and realize the automatic drilling and digital.