Papers by Author: T.X. Qiu

Abstract: In this paper, a new kind of NC magnetic abrasive finishing method with meshy polishing track to grind the parting face of mould was presented, and a new simple polishing tool using permanent magnet was also developed. Using the magnetic polishing tool, 3D NC polishing experiments was conducted on 2D parting surfaces. Experimental results reveal the relationship between several main parameters (rotational speed of magnetic pole, working gap, feeding speed and number of polishing times) and surface roughness. This study is expected to be helpful to improve the efficiency of finishing process, reduce worker's labor intensity, realize the effective control of finishing process and obtain fine quality of workpiece surface.

Abstract: At first, a relative mathematical model for electromagnetic inductor was constructed. On the basis of electromagnetic calculation theory, simulation analysis of magnetic field of electromagnetic inductor was performed with finite element method. Then, the magnetic flux density of the actual electromagnetic inductor was measured. Simulation result is basically identical with experimental result, and the maximum relative error is not more than 7%. It proves the validity of simulation analysis of the electromagnetic inductor. Based on the above results, the experiments of the Magnetic Abrasive Finishing were performed. The results offer a theoretical foundation for the magnetic abrasive finishing experiment and the optimum design of the electromagnetic inductor.