Establishment and Verification of the Cutting Grinding Force Model for the Disc Wheel Based on Piezoelectric Sensors
Establishment and Verification of the Cutting Grinding Force Model for the Disc Wheel Based on Piezoelectric Sensors
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DOI：
10.3390/s19030725
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发表时间：
2019-02
期刊：
影响因子：
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通讯作者：
Jing Ni;K. Feng;M. Al-Furjan;Xiaojiao Xu;Jing Xu
中科院分区：
文献类型：
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作者：
Jing Ni;K. Feng;M. Al-Furjan;Xiaojiao Xu;Jing Xu
本文提出了一种新的盘形砂轮切削磨削力模型。最初提出磨削力是由磨削力和切削力共同构成的。综合考虑磨粒形态、单粒平均磨削深度、有效磨粒数和磨粒与工件的接触弧长，分别建立了磨削力模型和切削力模型。在此基础上，引入基于概率统计的有效磨粒系数模型和基于瑞利分布理论的磨粒高度系数模型，对通用磨削力模型进行了优化。最后，根据磨削力和切削力的不同比例，建立了多质点磨削切削力模型。基于压电传感器的仿真和实验结果表明，该模型能较好地预测间歇磨削切削力。此外，引入了颗粒高度系数和有效颗粒数系数，提高了建模精度。与传统的磨削切削力模型相比，磨削切削力的仿真结果与实验结果的误差减小到7.8%。此外，通过建模，可以将磨削力分为增加、稳定和减小三个阶段。
In this paper, a new model of cutting grinding force for disc wheels is presented. Initially, it was proposed that the grinding cutting force was formed by the grinding force and cutting force in combination. Considering the single-grit morphology, the single-grit average grinding depth, the effective number of grits, and the contact arc length between the grit and the workpiece comprehensively, the grinding force model and the cutting force model were established, respectively. Then, a universal grinding cutting force model was optimized by introducing the effective grit coefficient model, dependent on the probability statistical method and the grit height coefficient model with Rayleigh’s distribution theory. Finally, according to the different proportions of the grinding force and cutting force, the grinding cutting force model, with multi-particles, was established. Simulation and experimental results based on piezoelectric sensors showed that the proposed model could predict the intermittent grinding cutting force well. Moreover, the inclusion of the grit height coefficient and the effective grits number coefficient improved the modeling accuracy. The error between the simulation and experimental findings in grinding cutting force was reduced to 7.8% in comparison with the traditional model. In addition, the grinding cutting force can be divided into three segments; increasing, steadiness, and decreasing, respectively found through modeling.