Research On Process For Wing Automatic Drilling Based On Model

The application of aircraft automatic drilling technology can improve aircraft assembly process and production efficiency,save production cost and shorten production cycle.Compared with other aircraft components,the wing carries more loads and has higher requirements for shape,layout,structure,drilling quality and precision.At present,the traditional manual or semi-automatic drilling technology is mostly used in wing assembly,which is not only time-consuming and laborious,but also difficult to guarantee the quality.To this end,this paper carries out research on the automatic drilling process for the wing,providing some new theoretical references and ideas for modern aircraft manufacturing.In this paper,according to the technological requirements of automatic drilling of wings,the main technical indexes of automatic drilling are established,and the drilling robot,robot mobile platform and end effector are selected The technological parameters of the robot drilling system are given,and the technological process is established.According to the technological process,combined with the equipment model and product size,uses DELMIA to plan the field layout of the automatic drilling system.By using engineering analysis module of CATIA to perform modal analysis on the drilling robot,the modal parameters such as the natural frequency,vibration mode,and damping parameters of the robot are obtained,which provides a theoretical basis for the stability study of the robot drilling system.In this paper,according to the structural characteristics of the wing and the actual production requirements,three schemes for drilling are given.All kinds of path schemes are analyzed and compared,and a path scheme which is most suitable for automatic drilling of wing is obtained.In DELMIA,the whole process of automatic drilling for the wing under the optimal path is simulated without any abnormal phenomena such as interference and collision,which proves the rationality and feasibility of hole making path,process layout and equipment model.The drilling process of titanium alloy is simulated by DEFORM,and the variation of drilling force and torque is obtained.At the same time,it also shows the temperature distribution of workpiece and tool during drilling.The influence of spindle speed and feed rate on the machining characteristics is analyzed.It is concluded that the drilling speed has little influence on the axial force and torque in titanium alloy drilling,and feed rate is the main factor affecting the axial force and torque in titanium alloy drilling.