The Experimental Research On Dressing Of Monolayer Brazed Diamond Grinding Wheel With Plate Wheel

Monolayer brazed diamond grinding wheels, due to its high bond strength，large inter-grit chipspace and high grit protrusion, will substitute conventional ones gradually and be used in the grindingof hard-brittle materials increasingly. Because of the machining tolerance of the wheel substrate andthe differences in diamond grain size etc., the grit-tip distances from the base of wheel substrate aredifferent, which will limit the application of the brazed diamond grinding wheels in the precisionmachining. So it is very imperative to search for a high efficiency and precision dressing methods.The method of using brazed diamond plate wheel to dress monolayer brazed diamond grindingwheel was proposed in this dissertation. The main research works are as follows:(1) The grinding theories of the engineering ceramics and the dressing principle of the platewheel method were summarized. The brazed plate wheel and monolayer brazed diamond grindingwheel were designed and manufactured.(2) The experiments were conducted about dressing of monolayer brazed diamond grindingwheel using brazed plate wheel. In the course of the experiments, the changes of the grit-tip distancesfrom the base of wheel substrate and the particle morphology were tracked, the grinding experimentson SiC ceramic materials were carried out, and the changes of the surface qualities of workpieceswere observed.(3) The grinding experiments on SiC, ZrO2and Al2O3using different process parameters werecarried out after dressing experiments, and the influences of the changes of process parameters to theworkpiece surface roughness and surface morphology were analyzed.(4) The experimental research on subsurface damage of SiC ceramics was conducted using abonded interface sectioning technique, and the influences of the changes of process parameters to thesubsurface damage were analyzed.