Research On Polishing Path And Controlling System Of Plastic Extrusion Plate

The machining requirement of many kinds of plastic thin-film material (PTFM) is demanded by the fast development of electronic and information techniques. At present, it has a great distance between domestic and importing high-grade thin-film plastic extrusion equipment in controlling accuracy, high-speed, reliability, complete-set. In this case, based on polishing technology and process research, aimed to study the automation of plastic extrusion plate (PEP), and it is the foundation of developing a PEP with autonomous intellectual properties.Compared with available polishing machine, a method which could finish the surface of large size workpiece by controlling the move of plate in XY-direction and the rotation of the plate itself has been advanced. To control the speed of the plate in XY-direction and its rotation, corresponding controlling rules have been established. And a simple arrangement has been made for measuring the workpiece surface and polishing process.The effect of polishing path to surface removal rate and out-of-flatness has been studied in detail. Three kinds of fractal route were advanced, and their superiority in flatness of workpiece over normal CMP and planetary mechanism route could be seen from computer simulation, especially its obvious superiority in large size workpiece.According to the controlling requirement of plate polishing system, the gross structure of plate polishing controlling system has been designed, and detailed instruction about general controlling structure, main key components and polishing process of software design flow diagram was given.The reliable model was established from the reliability of the polishing controller, this dissertation also analyzed the causes of the equipment breakdown in details. And the measures which could improve the reliability were adopted on both hardware and software of controller.