Analysis of a High-Precision Grinding Machine

 Abstract : A finite element model of an ultra-precision grinding machine that can have high precision and high stiffness is constructed and structural analysis is done with equivalent stiffnesses of linear motion guides by after structural design and the deformation of the grinding machine is obtained. In order to reduce the deformation of the grinding machine that causes bad influence on precision, structural complement is conducted by adding ribs at the lower part of the column. Also, the straightness of the grinding machine is improved by lifting the base side of the column. Modal analysis is done to find the natural frequencies. And thermal analysis is done to obtain temperature distributions and thermal deformation due to heat sources. Experiments were also done to measure the straightness of the machine and the temperature on LM guide. The deformation of the grinding machine is reduced by adding ribs and the grinding machine is stable for vibration because the machine has high natural frequency. It is confirmed that the ultra-precision grinding machine with linear motion guide applied