金刚石框架锯锯切研究(Ⅲ)——单个金刚石结块锯切力的特征与影响因素分析  

Study on Frame Sawing with Diamond Blades(Ⅲ)——Cutting Forces by Single Diamond and Single Segment

作　　者：王成勇[1] 傅凯旋[1] 周莉[1] 

机构地区：[1]广东工业大学机电工程学院,510090

出　　处：《金刚石与磨料磨具工程》2002年第4期3-9,共7页Diamond & Abrasives Engineering

基　　金：国家自然科学基金资助项目(5000013)

摘　　要：在对金刚石框架锯锯切加工动力学和锯切破碎机理模型的研究基础上,通过单颗粒金刚石划痕、单个金刚石结块切削石材的系列实验,测量并分析了金刚石框架锯锯切加工时的切削力特征及其影响因素。结果表明,单颗粒金刚石和单个金刚石结块以不同切削路径切削时的切削力不同的特征,反映了切削断裂过程性质的变化;金刚石浓度低和金刚石颗粒直径小时金刚石磨粒形状和切削方位对切削力有较大的影响。减小切削深度、使用切削液、在已切削表面上切削时,切削力下降。在框架锯锯切中,单颗粒金刚石承受载荷不高,考虑到磨粒切削干涉和重复切削的影响,单颗粒金刚石承载大约在5～15N之间。By means of the cutting experiments with single diamond and single diamond segment on CNC milling, the cutting forces are measured. The results shows, the characteristics of the curves of cutting forces versus cutting time show us the fracture process of stone. The shape and cutting orientation of diamonds affect the cutting forces. The cutting forces decrease with the dropping of depth of cut, using coolant, cutting on or cutting near the grooves machined beforce. Considering the co - actions of the diamonds on segment surface the maximum loading on the single diamond is calculated as 5 - 15N.

关 键 词：金刚石结块 金刚石 框架锯 锯切力 石材加工 

分 类 号：TU632[建筑科学—建筑技术科学]