Research On Path Strategy Of Corner Cutting For WEDM-LS

WEDM has been gaining wide acceptance in modern tooling applications and evolved as one of the most promising alternatives for the machining of the advanced ceramics and modern composite materials. As the market demand for improving the quality of the workpiece, new technologies and processes were applied in WEDM, which demonstrated a high level of technology. Improving the corner geometrical accuracy was difficult and important. Path strategies applied in rough cutting were developed to reduce geometrical inaccuracy of corner in this paper.This paper established the relationship between the distance of wire electrode lag and the velocity of the wire electrode. Under certain conditions, supposed that the distance of wire electrode lag and the velocity of wire electrode to meet the direct proportion relationship in this paper. Based on the relationship between the wire lag and the velocity of wire and the geometrical model between the wire electrode path and the NC path, a simulation path of the wire of cutting corner was worked out and the path strategies corresponding to different types of corner were proposed to improve the corner shape precision. In the development of path strategies applied in the optimization design ideas. Path strategies for the corner contained two lines and the corner contains line and circle were developed. The simulation results revealed that the error between the wire path and the corner contour reduced.To establish the relationship between the distance of wire lag and the main influencing factors, a test based on Taguchi method was carried out and the test results were analyzed through regression analysis. The shapes of corner were compared by using path strategies for the corner or not. The experimental results demonstrated that the contour accuracy of the corner improved by using the path strategy for the corner. To visualize the corner path strategy, software about corner path strategy was developed. The input and out of the software both were NC codes. The simulation path and the strategy path were both displayed on the screen.