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Surface grinder is the basis of traditional grinding mechanism. This study will change the design of traditional grinder to improve the grinding accuracy and efficiency, and then study the impact parameters of lapping and polishing accuracy. In many countries, the development of grinding machines is in the direction of high speed, high precision, high efficiency, precision machining, and environmental protection. Nowadays, the technical development trend of surface grinders tends to be more complex and intelligent, and is suitable for precision machining. The demands of lapping and polishing are constantly increasing, and the requirements of machining accuracy are becoming higher and higher. Various grinding equipment manufacturers actively promote the development of digital control systems, and develop their own numerical control grinding machines to satisfy the requirements of machining accuracy of surface grinders. With the development of science and technology, the precision requirements of surface grinders are getting higher and higher, and the application range is getting wider and wider. The traditional grinders can obtain the high-precision grinding effects, however it cannot achieve a relatively precise surface roughness and flatness. In addition, it is impossible to eliminate the grinding marks generated during the surface grinding process. This study will design a precision polishing device that can improve the flatness and surface roughness, and eliminate the grinding marks. This study uses a four-link mechanism (RRPP) to generate a single circular polishing traces with constant velocity. This mechanism is a mechanism with one degree of freedom and driven by 1 general motor and does not require the use of servo motors and PLC control. This design will improve the surface roughness, flatness, and eliminate grinding marks after grinding.
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