东北大学学报(自然科学版) ›› 2024, Vol. 45 ›› Issue (8): 1135-1142.DOI: 10.12068/j.issn.1005-3026.2024.08.009

• 机械工程 • 上一篇    下一篇

二维超声振动辅助磨削的磨削力建模

马廉洁, 孙立业, 邱喆, 李红双   

  1. 东北大学秦皇岛分校 控制工程学院,河北 秦皇岛 066004
  • 收稿日期:2023-03-24 出版日期:2024-08-15 发布日期:2024-11-12
  • 作者简介:马廉洁(1970-),男,河北秦皇岛人,东北大学教授.
  • 基金资助:
    国家自然科学基金资助项目(51975113);中央高校基本科研业务费专项资金资助项目(N2123025);河北省自然科学基金青年基金资助项目(E2021501027)

Grinding Force Modeling of Two-Dimensional Ultrasonic Vibration Assisted Grinding

Lian-jie MA, Li-ye SUN, Zhe QIU, Hong-shuang LI   

  1. School of Control Engineering,Northeastern University at Qinhuangdao,Qinhuangdao 066004,China. Corresponding author: MA Lian-jie,E-mail: bcmlj1025@163. com
  • Received:2023-03-24 Online:2024-08-15 Published:2024-11-12

摘要:

在研究二维超声振动下单颗磨粒的运动特性基础上,根据体积不变原理确定了平均切屑厚度.基于磨粒的几何形状以及材料的弹性回复率,推导出切屑变形力模型;根据摩擦力来源于磨粒与工件弹性接触和切屑流出,构建摩擦力模型;考虑到高频振动所产生的冲击作用对总磨削力的影响,建立冲击力模型.综合切屑变形力、摩擦力和冲击力模型,得出二维超声磨削的磨削力模型.通过氧化铝陶瓷二维超声磨削实验研究,确定了模型中的常数,并验证了磨削力模型的合理性.结果表明,法向力、切向力的实验值与理论值之间的平均误差分别为11.09%和8.07%,误差最大值不超出20%,所建模型具有预测作用.

关键词: 磨削力, 超声振动, 运动学特性, 磨削力模型, 氧化铝陶瓷

Abstract:

Based on the study of the motion characteristics of a single abrasive particle under two?dimensional ultrasonic vibration, the average chip thickness was determined according to the principle of constant volume. Based on the geometric shape of the abrasive grain and the elastic recovery rate of the material, the chip deformation force model is derived. According to the friction force from the elastic contact between the abrasive particles and the workpiece and the chip outflow, the friction model is established. Considering the impact of high frequency vibration on the total grinding force, the impact force model is obtained. Combining the chip deformation force, friction force and impact force model, the grinding force model of two?dimensional ultrasonic grinding is obtained. Through the experimental study of two?dimensional ultrasonic grinding of alumina ceramic materials, the constants in the model are determined, and the rationality of the grinding force model is verified. The results show that the average errors between the experimental values and the theoretical values of the normal force and the tangential force are 11.09% and 8.07%, respectively, and the maximum error does not exceed 20%. Thus, the model has a predictive effect.

Key words: grinding force, ultrasonic vibration, kinematic characteristics, grinding force model, alumina ceramics

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