单颗粒金刚石平面划擦大理石的实验研究

本文采用单颗粒金刚石沿不同的切削路径（不同间距切痕或重叠切痕）与不同切削深度的组合形式进行了平面划擦广西白大理石的试验。分析了两种切削路径下各加工参数对切削力FZ的影响,结果表明：当切削深度小于10μm时,两种切削路径对各道切痕的切削力FZ无明显影响;当切削深度大于30μm时,切削路径对切削力FZ影响增大,且在相等切削深度的条件下,切痕重叠时的加工性能比不同切痕间距时的加工性能差;在不同间距切痕条件下,小间距大切削深度（L〈200μm,ap〉70μm）或大间距小切削深度（L〉600μm,ap〈10μm）的组合形式的加工性能较好。

Surface scratching experiment on marble with single particle diamond

In this paper,surface scratching experiment on Guangxi White marble with a single particle diamond was conducted at different depth of cut in two kinds of cutting path（along overlapped cutting marks and along spaced cutting marks）.Influence of the cutting parameters upon the cutting force FZ in two cutting ways was discussed by aid of acoustic emission root mean square（AErms） analysis.The results indicated that,at a depth of cut﹤10 μm,the way of cutting had little influence on the cutting force FZ;At a depth of cut﹥30 μm,the influence on the cutting force FZ was increasing;When taking the same depth of cut,the machining performance along overlapped cutting marks was inferior to that when along spaced cutting marks.In case of cutting with spaced cutting marks,a parameter combination of small space（L﹤200 μm） plus big depth of cut（ap﹥70 μm）,or big space（L﹥600 μm） plus small depth of cut（ap﹤10 μm）,has better cutting performances.