| The development of ice-sports brings more demands to the quality of skates. Aiming at the disadvantages of skates hand-whetting which are poor quality, low automation and efficiency, skates numerical control whetting is proposed in this thesis. Combining with the project of "Development and Research of Portable Numerical Control Skates Muller"from National P.H general bureau, systemic research on the portability and precision and whetting process of skates is madden in this thesis. Firstly, portability is a very important key demand of skates muller, it is mainly embodied in its equipment. After the analysis of effect factors of portability, two methods are put forward according to equipment portability. â‘ The general layout of skates muller and its key parts are brought out. Skates are equipped upright, workbench is mounted horizontally,shorten the size of equipment as possible as can. â‘¡Through the self-made circuit board that connected with the print port, skates muller is treated as peripheral equipment and is controlled by PC directly. Special skates clamp is developed in order to ensure the fastness rigidity. Secondly, the factors that influence the precision of skates, are analyzed. Based on these analyses and general amounts of skates, the process of whetting can be created automatically by control system. The whetting can be carved off three steps: rough whetting, accurate whetting, and polishing whetting. the researches on the grade whet of skates, the structure of grinding wheel are given. The adjustment method of grinding wheel is given based on the research of wear and tear mechanism. Finally, on the basis of hardware system of HNC (Huazhong Numerical Control), the control system of whetting of skates is brought out. the special motion of grinding wheel is proposed. Through CNC-PLC data and tache of signal disposals of simulation unit, principal axis AC motors is controlled by transducer. hence, the constant thread speed of grinding wheel combining with the principal axis motor is gained. the object-oriented programming is used in the muller's control system, which provides the friendly interface that causes the alternations between machine and operator to become easier, and suits for athletes. And system also provides online simulation of machining process which makes the whetting process more visually. |