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Quality of the products manufactured is the basic necessity in global manufacturing system. Machine tools must be periodically serviced to perform towards attaining higher productivity with better quality. Periodic maintenance, calibrations, identification of volumetric displacement of the components of the machine tool due to wear and tear, thermal behaviors, etc., are most essential. In this work the geometric dislocations of the components of a two axes CNC lathe at various positions on the machine tool are cumulatively summed and the total volumetric error behavior at the tool center point(TCP) is plotted in 3D. Experiments were carried out for more than twenty hours for a particular load cycle and the geometric and thermal errors were identified at each stage. An expression for total volumetric error is derived by synthesizing the machine’s parametric errors such as linear position errors, pitch, roll, yaw, etc., using homogeneous matrix transformations. With the derived mathematical model the error behavior/volume at the tool-work piece interface is plotted and compared with the experimental results

MODELING AND ANALYSIS OF VOLUMETRIC THERMAL ERROR IN TWO AXIS HORIZONTAL TURNING CENTER USING RIGID BODY KINEMATICS