锯切花岗岩过程中金刚石框架锯的锯切力研究  

Research on Sawing Force of Diamond Frame Saw in Process of Sawing Granite

作　　者：欧阳丛森 朱振杰 张进生 吴俊杰 Ouyang Congsen;Zhu Zhenjie;Zhang Jinsheng;Wu Junjie(School of Mechanical Engineering,Shandong University,Jinan 250000,Chin;不详)

机构地区：[1]山东大学机械工程学院山东省石材工程技术研究中心高效洁净机械制造教育部重点实验室,250000济南市

出　　处：《工具技术》2021年第9期36-41,共6页Tool Engineering

基　　金：山东省重点研发计划(2019GGX104022);日照市科技创新专项项目(2019CXZX1109)。

摘　　要：锯切力是影响金刚石框架锯锯切板材质量的重要因素。本文通过对锯切机的运动学分析,研究锯条受载的变化情况与主要加工参数(进给速度v、参与锯切锯齿数n、和飞轮转速ω)对锯切力的影响机理,建立了最大锯切深度的计算模型。采用响应曲面法设计三因素三水平的金刚石框架锯锯切花岗岩试验,建立法向、水平锯切力关于主要加工参数的二阶预测模型,分析各因素对水平、法向锯切力的影响情况。通过ABAQUS有限元仿真软件对张紧后的锯条进行非线性屈曲分析,得到其临界屈曲载荷,进而得到在25个锯齿参与锯切条件下不发生临界屈曲的最优加工参数组合为进给速度v=62.94mm/h,飞轮转速ω=70r/min。The sawing force is an important factor affecting the quality of plate sawn by diamond frame saw.This paper analyzes the kinematics of diamond frame saw to study influence the load changes on the saw blade and main machining parameters(feed speed v,number of segments involved in sawing n,flywheel speedω)on the sawing force.And the calculation model of the maximum sawing depth is established.The response surface method is adopted to design the test of three-factor and three-level diamond frame saw sawing granite,and the second-order prediction model of the normal and horizontal sawing force on machining parameters is established.The influence of various factors on the horizontal and normal sawing force is analyzed.Through the ABAQUS finite element simulation software,the nonlinear buckling analysis of the saw blade after tension is carried out,and the critical buckling load is obtained.Furthermore,the optimal machining parameters without critical buckling under the condition of 25 segments participating in sawing are obtained as the feed speed v=62.94 mm/h and the flywheel speedω=70 r/min.

关 键 词：金刚石框架锯 锯切力 响应曲面法 加工参数优化 

分 类 号：TG56[金属学及工艺—金属切削加工及机床] TH161[机械工程—机械制造及自动化]