Analysis of Nd:YAG Laser Machining Parameters Based on Taguchi Method During Profile Generation

A Nd:YAG pulsed CNC laser machining-system has potential for precision machining operation on very hard conductive as well as non-conductive materials. For achieving high profile accuracy, the important process parameters such as the radio frequency of Q-switch, lamp current and cutting speed are to be optimally controlled because these controllable process parameters mostly affect the precision machining i.e. dimensional accuracy and surface roughness. In this present research, a hard cutting tool material has been chosen for generating intricate and accurate shape of cutting tool and the accuracy in profile cutting and surface roughness are considered as the responses of the Nd:YAG laser cutting operation. Taguchi method based parametric optimisation is applied for determining the optimal parametric combination for achieving high quality machining characteristics during Nd:YAG laser cutting operation. The confirmation test has also been carried out to predict and verify the adequacy of the additive model for determining the optimal machining characteristics.