Research On CAM Techonology Of Automatic Composite Fiber Placement

Automatic fiber placement is a sort of automatic manufacture technology which was raised first at the field of aeronautics and astronautics, and through it, the low-cost and high-quality advanced composite material can be produced. The technology isn't developed in our country until the latest several years and there is a big difference between our country and others on it. The Programme is one of most important technique automating fiber placement. Based on 7-axis robot for auto composite fiber placement which is designed by Naming University of Aeronautics and Astronautics, the programme technology is further studied and the simulation technology for fiber placement is explored in the thesis. The primary work and achievements are as follows:1) The process of fiber placement is analyzed. For perfecting the placement techniques, the return and preparative processes of the robot's arm are designed and the algorithm attaining their control information is realized by program. The question on how to rotate the core model is studied and the relevant method is put forward. The method to transfer that geometrical information from the design reference frame to the principal axis ones is realized based on the trans-core line.2) The course to resolve the inverse kinematics is improved. The inverse kinematics method based on those dispersed placement positions is raised. This new method can ensure that the real fiber route matches up to the designed ones while improving the quality of placement.3) The course is perfected to attain those control information for placement. Those logical relations are done well among cutting,feeding and pressing. And the work is done based on the advanced length of the fibers to match the athletic and cutting-out information and unite them.4) The inspection method to the collision and interference during the placement course is studied and realized .The function module of dynamic simulation to the placement course is developed. At last, the placement information building on S-inlet of certain aircraft is checked by that inspection method and validated by real robot. The ultimate result verifies legitimacy and availability of all work.