發(fā)布時(shí)間：2019-05-17 04:13

【摘要】：建立了微磨削過(guò)程中單顆磨粒的磨損數(shù)學(xué)模型,通過(guò)觀測(cè)微磨具磨削前后直徑變化、表面形貌變化及加工前后試件的表面質(zhì)量,分析了微磨削過(guò)程中不同階段磨粒的磨損情況.利用粒度500~#微磨具對(duì)鈉鈣玻璃進(jìn)行單因素磨損實(shí)驗(yàn),研究不同的磨削影響因素對(duì)微磨具磨損的影響規(guī)律.實(shí)驗(yàn)結(jié)果表明:隨著磨削速度和進(jìn)給速度增大,磨粒的磨損和破碎現(xiàn)象加劇;隨著去除材料體積的增加,微磨具直徑先是急劇減小,而后呈線性減小趨勢(shì);加工表面的粗糙度隨著去除工件體積的增加總體呈下降趨勢(shì).研究結(jié)果為提高微磨具的使用壽命和加工性能提供了理論參考和實(shí)驗(yàn)依據(jù).
[Abstract]:The wear mathematical model of a single abrasive particle in the process of micro-grinding is established. By observing the change of diameter before and after grinding, the change of surface morphology and the surface quality of the specimen before and after machining, the wear of abrasive particles in different stages of micro-grinding process is analyzed. The single factor wear experiment of sodium calcium glass was carried out by using 500 渭 # micro grinding tool, and the influence of different grinding factors on the wear of micro abrasive tool was studied. The experimental results show that the wear and breakage of abrasive particles increase with the increase of grinding speed and feed speed, and the diameter of micro-grinder decreases sharply at first and then decreases linearly with the increase of material volume. The roughness of machined surface decreases with the increase of workpiece volume. The research results provide theoretical reference and experimental basis for improving the service life and machining performance of micro-abrasive tools.
【作者單位】： 東北大學(xué)機(jī)械工程與自動(dòng)化學(xué)院;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51375082);國(guó)家自然科學(xué)基金青年基金資助項(xiàng)目(51505073)
【分類號(hào)】：TQ171.684

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