Experimental study on electro-contact discharge truncating of coarse diamond grinding wheel for improving ground surface
The smooth surface grinding depends on material micro-removal by diamond grain, but it is difficult to control the grain protrusion features.Hence, the electro-contact discharge (ECD) is proposed to truncate the coarse diamond grain through surface graphitization.The objective is to optimize the grain protrusion topography and uniformity for improving ground surface.First, the rotating iron dresser was employed to perform ECD truing in contrast to copper dresser;then the grain micro-topographies were extracted from measured wheel surface;finally, the dry grinding of SiC-Al ceramic and S136H die steel were conducted to investigate the relationship between grain protrusion parameters and surface quality.It is shown that although the rotating iron dresser for ECD truing sharply decreases the grain protrusion height by 27.1% against the copper dresser, it increases the grain protrusion angel by 8.6% and grain protrusion uniformity by 73.6%, leading to a decrease 36.1% and 82.4% in surface roughness for SiC-Al and S136H, respectively.It is confirmed that the truncating of coarse diamond grinding wheel is likely to achieve the high surface quality in grinding.
electro-contact discharge truncating grain truncating coarse diamond wheel
Quanpeng He Jin Xie Ruibin Guo
South China University of Technology, China
国际会议
上海
英文
205-208
2017-11-19（万方平台首次上网日期，不代表论文的发表时间）