Study On The Magnetic Abrasive Finishing Of Tungsten Carbide Mold For Glass Molding Press

Optical component tungsten carbide mold process the micro-V groove by forming wheel, through the study of micro-V groove finishing process, the purpose is to obtain a high surface roughness on micro-V groove slant. So that the optical component tungsten carbide molds can meet the requirements, to lay the foundation for further optical glass molding process. Traditional abrasive finishing technology is a mature technology, the main difficulty lies in this paper is that grinding tungsten carbide micro-V groove die size is very small and difficult to process using conventional methods. Therefore, this paper propose magnetic abrasive finishing technology, which used the flexible abrasive characteristics of this technology. Abrasive brush can enter inside the V-groove grinding, therefore this technology can solve this problem.The main contents of this paper include the following aspects:(1) It analyzes the characteristics and present situation of the development of magnetic abrasive finishing technology. The development direction and classification of magnetic abrasive finishing technology.(2) Study of magnetic abrasive finishing mechanism. It focuses on the forces of the single particle magnetic abrasive grains suffered in the magnetic field and the pressure of entire finishing brush on the workpiece in the magnetic field. It analysis the mechanism of magnetic abrasive finishing removal materials and the effect of polishing liquid to magnetic abrasive finishing.(3) Designing and Simulation of the magnetic poles. Including the choice of materials for magnetic pole, the pole-shaped design, and simulation of the magnetic field around the magnetic poles, the magnetic field distribution analysis.(4) Bonding method for preparing the magnetic abrasive grains. Including the analysis of the entire process of magnetic abrasive grains prepared, and the associated magnetic grains prepared experiments.(5) Experimental design and magnetic abrasive finishing experiments. Including experimental device design, manufacture, assembly, as well as separately for tungsten carbide surface and micro-V groove magnetic abrasive finishing experiment and the experimental results analysis.Through the above series of theoretical analysis, simulation and experiment, this paper propose a practical method for optical component tungsten carbide mold finishing process, and it provides appropriate technical reference for miniature mold finishing technology.