Research On Bonnet Polishing Technology And Process With Industrial Robot For Optics

High accuracy optics have been widely used in in various photoelectric systems and instruments.The polishing process in the manufacturing process of high-precision optical elements has a low material removal rate,which greatly restricts the production cycle of components.It is of great significance to develop a low cost,high efficiency and high accuracy optical polishing system.Compared to other Computer Controlled Optical Surfacing Technologies(CCOS),bonnet polishing technology(BP)is a new and potential polishing technology with high removal efficiency,good polishing stability and high accuracy.What's more,due to the flexibility of its rubber bonnet,bonnet tool can adapt to various surface and can be widely used in different occasion.Industrial robot has been widely used because of its advantages of low cost,automation,programmability and strong adaptability.The development of robot bonnet precision polishing system,combining with bonnet polishing technology and industrial robot technology,can not only meet the requirements of high precision and high efficiency of optical component polishing,but also reduce the development cost.Based on the bonnet polishing technology,this paper adopts the industrial robot as the equipment platform to build the bonnet precision polishing system,and carries out a series of technical and technological research based on the polishing platform,providing a research foundation for the subsequent application of the combination of high automation robot and precision polishing technology.The main research contents and innovation points of this paper are as follows:(1)Built the industrial robot bonnet precision polishing system by combining the industrial robot equipment and semi-rigid bonnet tool.Based on the principle of bonnet precession polishing and the requirements of programming control for industrial robot,the mathematical model of robot bonnet precession movement was established,and the control algorithm was proposed to realize the precession polishing control of robot bonnet polishing system.(2)Realized the cartesian stiffness matrix modeling of the end of the industrial robot and analyzed the force the end of robot on the polishing.Deformation of the end of robot on polishing under different attitude from numerical simulation and finite element analysis;Tool influence function of bonnet with end deformation error was established to analyze the stability of discrete precession polishing,and the polishing stability of the system was verified by experiments.(3)To research of the ability of continuous processing with the robot bonnet polishing system,a series of polishing experiments are conducted.Include linear uniform polishing and plane area uniform polishing.The influence of robot error on continuous machining is analyzed from the aspect of numerical simulation.(4)Finish the surface dressing of the bonnet,conduct research on the ability of corrective polishing,design an experiment and complete the whole surface polishing experiment of the (?)330mm plane optical with different size polishing spots.