| 刘折,赵波,童景琳.轴向超声振动-ELID复合辅助磨削ZTA陶瓷磨削力研究*[J].,2025,44(4):939-945 |
| 轴向超声振动-ELID复合辅助磨削ZTA陶瓷磨削力研究* |
| Research on the grinding force of ZTA ceramics by axial ultrasonic vibration - ELID composite assisted grinding |
| 投稿时间：2025-02-04 修订日期：2025-06-25 |
| 中文摘要: |
| 【目的】为深入探究轴向超声振动-电解在线砂轮修整技术(Electrolytic In-process Dressing,ELID)复合辅助磨削ZTA纳米复相陶瓷时轴向超声振动的施加对磨削力的影响规律及轴向超声振动-ELID复合辅助磨削时的磨削机理，【方法】在分析轴向超声振动单颗磨粒运动轨迹的基础上，基于硬脆材料的材料去除机理，根据去除材料体积不变原则，计算了单颗磨粒平均未变形切屑厚度，建立了切屑变形力模型；考虑超声振动对摩擦力的影响，计算磨粒与工件之间的滑移速度，构建了切削过程中的摩擦力模型。进而建立了轴向超声振动-ELID复合辅助磨削时的磨削力综合模型。搭建了轴向超声振动-ELID复合辅助磨削试验平台，对所建模型进行了试验验证。【结果】试验结果表明，随着磨削深度、进给速度的增加，法向力和切向力均不断增大，随着砂轮线速度的增大，法向力和切向力均呈下降趋势，轴向超声振动-ELID复合辅助磨削时的磨削力均小于ELID磨削时的磨削力，这与对模型的分析一致。【结论】轴向超声振动的施加有助于降低磨削力，模型仿真值与试验值最大误差19.76%，模型仿真值与试验值变化规律一致、趋势吻合度较好，验证了所建模型的正确性。 |
| 英文摘要: |
| The purpose of this study is to explore the influence of axial ultrasonic vibration on grinding force and grinding mechanism during the axial ultrasonic vibration-Electrolytic In-process Dressing (ELID) composite assisted grinding of ZTA nano-composite ceramics. On the basis of the kinematic trajectory analysis of single abrasive particle during axial ultrasonic vibration, the average undeformed chip thickness of single abrasive particle was calculated to construct a chip deformation force model based on the removal mechanism of hard and brittle materials as well as the principle of constant volume of removed material. Taking into account the influence of ultrasonic vibration on friction, the slip velocity between abrasive particle and workpiece was calculated to construct the friction model in the cutting process, thereby establishing a comprehensive model of grinding force during the axial ultrasonic vibration-ELID composite assisted grinding. The test platform of the axial ultrasonic vibration-ELID composite assisted grinding was built to conduct test verification on the constructed model. The experimental results show that the normal and tangential forces increase continuously with the increase of grinding depth and feed rate, and both show a decreasing trend with the increase of grinding wheel linear velocity.The grinding force during axial ultrasonic vibration ELID composite assisted grinding is lower than that during ELID grinding, which is consistent with the analysis of the model. The application of axial ultrasonic vibration can reduce grinding force, the maximum error between model simulation value and test value is 19.76%, and the changing laws between them are consistent, with good overall consistency, thereby verifying the correctness of the model. |
| DOI：10.11684/j.issn.1000-310X.2025.04.015 |
| 中文关键词: 轴向超声振动 ELID 磨削力 复合磨削 ZTA陶瓷 |
| 英文关键词: axial ultrasonic vibration ELID grinding force composite grinding ZTA ceramics |
| 基金项目:国家自然科学基金项目（面上项目，重点项目，重大项目） |
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