金刚石框架锯锯切花岗岩的锯切力实验研究  

Study on sawing forces of diamond frame saw in granite cutting

作　　者：许东[1,2,3] 张进生[1,2,3] 王志[1,2,3] 张恒[1,2,3] 孙芹[1,2,3] 

机构地区：[1]山东大学机械工程学院,济南250061 [2]山东大学高效洁净机械制造教育部重点实验室,济南250061 [3]山东省石材工程技术研究中心,济南250061

出　　处：《金刚石与磨料磨具工程》2015年第2期21-25,32,共6页Diamond & Abrasives Engineering

基　　金：山东省自然科学基金项目(ZR2012EEM032)

摘　　要：本实验对金刚石框架锯锯切花岗岩过程当中的刀具轨迹进行了分析,通过单因素法和正交试验法对锯切力进行了跟踪监测,研究了锯切力随飞轮转速、进给速度和锯切长度的变化趋势。实验结果表明:金刚石锯条按弧线运动轨迹进行锯切,且在一个锯切往复周期内刀具只有一半时间参与锯切,锯切力Fh和Fc随着飞轮转速的增大而减小,随着进给速度和锯切长度的增大而增加。通过回归分析建立了锯切力数学模型,得出进给速度对Fh和Fc影响最明显,锯切长度次之,飞轮转速影响最小,并可以通过该模型在实际生产中预测锯切力的大小。The influences of cutting parameters on the cutting forces in frame sawing of granite were investigated. The tool cutting ＂trajectory during sawing was tracked. The sawing experiment was conducted on a new diamond frame saw machine and the combinations of sawing parameters were designed by one-factor and orthogonal method. The results showed that in a cutting cycle the diamond saw blade was sawing along arc trajectories, and that the blade was involved in cutting for only half of the cycle. The cutting forces, Fh and Fc, increased with increasing feeding speed and cutting length and decreasing flywheel speed. Mathematical models of cutting force were established by regression analysis. It could be concluded that the influence of feeding speed on the cutting forces was more significant than those of cutting length or flywheel speed. Cutting force could be predicted by the model in the actual production.

关 键 词：金刚石框架锯 刀具轨迹 锯切力 花岗岩 

分 类 号：TQ164[化学工程—高温制品工业] TG74[金属学及工艺—刀具与模具]