金刚石薄锯片高速锯切花岗石过程中的锯切力特性

本文对金刚石薄锯片高速锯切花岗石过程中的锯切力特性进行试验研究,在较宽的参数范围下,通过测量水平力、垂直力和主轴功率来计算切向力和法向力.对锯切力、力比、单颗金刚石承受的平均载荷进行了分析.结果显示,提高锯片的线速度使锯切力、力比和单颗金刚石磨粒承受平均载荷减小;在高速锯切时,锯切力随着锯切深度和进给速度的增加而增加,而进给速度对锯切力的明显影响要小于锯切深度,应选择小切深大进给的工艺参数组合;锯切力比随锯切深度的增加而增加,随进给速度的增加而减小;单颗金刚石磨粒承受平均载荷随着单颗粒金刚石最大未变形切削厚度的增大而线性增大.

Characteristics of forces in high - speed circular sawing of granite with a thin diamond blade

An experimental study was carried out to investigate the characteristics of forces in high -speed circular sawing of granite with a thin diamond blade over a very wide range of sawing conditions. Measurements were made on the horizontal and vertical components and the power in order to obtain the tangential and normal force components. The sawing forces, force ratio, average force of single active diamond grain were analyzed. The conclusions present that periphery speed increased can help to lower sawing forces, force ratio, average force of single active diamond grain; In the high speed sawing, sawing forces increase with cutting depth and workpiece velocity, and the effect of workpiece velocity on sawing forces is smaller than cutting depth, the technological parameters of larger cutting depth and smaller workpiece velocity should be selected; force ratio increases with cutting depth and decreases with workpiece velocity ; average force of single active diamond grain increases linearly with maximum undeformed chip thickness.