This study is concerned with systematic analysis of linear motion errors of machine axes and subsequent development of a generalized software compensational model of positioning accuracy of NC machine tools.
Error motions of a machine carriage are interpreted based on the rigid body kinematics. And a three dimensional error compensational algorithm is suggested which can be effectively utilized for most of NC lathes, machining centers and grinding machines. In addition, a computer-aided automatic measuring system of machine accuracy has been developed and tested using the laser interferometer.
Finally, some test results have been demonstrated based on simulation and practical experiments to prove effectiveness of the software compensation technique formulated in this work.
