锻压技术

热态锯切条件下锯齿磨损实验与有限元仿真

英文标题：Experiment and finite element simulation on sawtooth wear under hot saw condition

作者：王琛双远华陈建勋张雨田李潮王文豪

单位：太原科技大学

分类号：TF31

出版年,卷(期):页码：2020,45(9):194-200

摘要：

热态锯切过程中的锯齿磨损对锯切质量和加工效率有着重要的影响。首先，根据锯齿直线运动的假设，对锯切过程进行了分析；进而基于Usui模型建立了锯齿磨损仿真模型，并对磨损模型进行了实验验证。仿真研究了不同工艺参数(锯切线速度、单齿锯切深度与实验温度)对锯齿前刀面磨损的影响规律。最后，通过构建磨损敏感度表达式，探讨了不同工艺参数对磨损量的影响程度。结果表明：锯齿前刀面月牙洼深度随着锯切线速度、单齿锯切深度的增加而增加，随实验温度的增加而减小；月牙洼最深处距齿尖的距离随锯切线速度的增加而减小，随单齿锯切深度和实验温度的增加而增加；影响锯齿磨损的各个因素的主次顺序为：实验温度、锯切线速度、单齿锯切深度。

Sawtooth wear during hot sawing process has an important effect on sawing quality and machining efficiency. Firstly, the sawing process was analyzed according to the hypothesis linear motion hypothesis. Then, based on the Usui model, a sawtooth wear simulation model was established and verified by experiment, and the influences of different process parameters (sawing line speed, single tooth sawing depth and experiment temperature) on the wear of sawtooth rake face were simulated. Finally, by constructing the expression of wear sensitivity, the influences of different process parameters on the wear amount were discussed. The results show that the crescent crater wear depth on the sawtooth rake face increases with the increasing of the sawing line speed and the single tooth sawing depth and decreases with the increasing of the experiment temperature, and the distance from the deepest point of crescent crater to the tip of tooth decreases with the increasing of the sawng line speed and increases with the increasing of the single tooth sawing depth and the experiment temperature. Thus, the order of factors affecting the sawtooth wear is experiment temperature, sawing line speed and single tooth sawing depth.

基金项目：

山西省重点研发计划项目（201903D121049）；山西省科技重大专项项目（20191102009）

王琛（1986-），男，博士研究生 E-mail：wangc1215@163.com 通讯作者：陈建勋（1966-），男，学士，正高级工程师 E-mail：cjx@tyust.edu.cn

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