عليرضا ضحاكي وحيد

Nowadays, with the increasing progress of science, industry, and technology, it is necessary to use parts with more efficiency and better performance characteristics. The workpieces' surface integrity significantly affects the quality and lifetime of the produced parts. Therefore, studying the effect of the dressing processes' parameters on the workpiece's surface integrity is essential. In this research, the mutual influence of the dresser's depth and feed speed in the grinding wheel's dressing process, along with the cutting fluid supply methods in the grinding process, has been eva‎luated on the surface integrity of the ground workpiece. Different methods of cutting fluid supply, including the flood, the Minimum Quantity of Lubrication (MQL) and cryogenic, and the feed speed of grinding, were investigated by screening tests, and suitable parameters were obtained to carry out the design of the experiment. The full factorial, has been used to design experimental tests. The methods of the MQL and cryogenic and the dressing feed speed and depth of the dresser were considered input parameters. Among the parameters of surface integrity, surface roughness was considered the output parameter. The eva‎luation of surface roughness is based on the arithmetic mean (Ra) and Root Means Square (RSM) roughness criteria. Based on the results of the statistical analysis, it was determined that the feed speed of the dresser has the most significant effect on the surface roughness of the workpiece. The ground workpiece surface's lowest roughness is obtained under the feed speed of 150 mm/min, dressing depth of 30 microns with the MQL strategy, and the value of Ra is equal to 0.278 microns, and the value of Rq is equal to 0.365 microns.

فرايند سنگ‌زني , زبري سطح , حداقل مقدار روانكاري , برودتي , فرايند درسينگ

Grinding Process , surface roughness , MQL , Cryogenic , Dressing Process

Alireza Zahaki

Dr. Behnam Davoodi