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W. Bae(배원준),Y. Kim(김양진) Korean Society for Precision Engineering 2021 한국정밀공학회 학술발표대회 논문집 Vol.2021 No.11월
Machining precision of the machine tool is affected by the performance of the machine tool spindle which is directly conducting a cutting process. The machine tool spindle is one of the biggest heat sources of machine tools, therefore, the generated heat can deteriorate the total machining process. In fact, thermally-induced errors account for 70% of the entire machining errors. In this study, a metal-matrix composite was used to suppress the thermal deformation of the machine tool spindle. Firstly, the TiC-SUS431 metal-matrix composite was produced by the liquid pressing infiltration method for acquiring the mechanical and thermal properties. After the parameters of the machine tool spindle model were decided, the boundary conditions were calculated for the transient thermal analysis. Finally, the values of the temperature and thermal deformation of the TiC-SUS431 applied spindle were obtained and compared with the values of the SCM415 which is the main material of the machine tool spindle. From the results, it was shown that the thermal deformation value of the metal-matrix composite applied machine tool spindle has been reduced by more than 35%. Therefore, the metal-matrix composite could be applied to the material of the machine tool spindle to suppress the thermal deformation.