Technical Papers and Presentations

Today’s manufacturing industries like automobile, aerospace and Machine tools are demanding more accurate machined parts. Machine tool center has 40-70% of Machining error due to thermal issues. Temperature rise creates non-linear thermal deformation of machine. Significant cause of temperature rise due to friction at internal heat sources are motors, spindle bearings, belt drives and axis drives, while External heat is due to the environmental effect. This case study focuses on the prediction of thermal behavior of Vertical Machining Center due to environmental temperature variation using COMSOL-Multiphysics. Finite element analysis results shows maximum 17.5 µm in Z-Axis and 11.5 µm in Y-axis of vertical machining center. Results of FEA data are presented that show that the FEA-based method correlated well with the experimental results resulting in the 80-85 % of accuracy.