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由于零件小型化的迫切要求，对超精密微型磨床的需求与日俱增。机床振动是影响微磨削加工精度及表面粗糙度的主要问题之一。为了减少机床振动，利用Ansys Workbench对4种龙门结构进行有限元分析，选取了1种最优方案作为微磨床龙门结构，并对5种常用龙门材料进行了有限元分析，最终选取天然花岗岩作为龙门和隔振台材料。根据有限元分析结果设计了微磨床的整机结构，并对整机结构进行了静力学、模态和谐响应分析，验证了所设计微磨床总体方案的合理性。根据设计分析结果，研制了微磨床实验样机，其运动平台能实现三轴联动及微米级运动精度，电主轴转速最高能达到80 000 r/min。
Abstract：The demand for ultra-precision micro grinding machines is increasing day by day due to the urgent need for the miniaturization of parts. Machine tool vibration is one of the main problems affecting the machining accuracy and surface roughness of micro grinding. In order to reduce the vibration of machine tool, Ansys Workbench was used to carry out finite element analysis of four types of gantry structures, and an optimal solution was selected as the gantry structure of the micro grinder. Finite element analysis was further carried out on five commonly used gantry materials, and natural granite was finally selected as the gantry and vibration isolation table material. Based on the results of finite element analysis, the complete structure of the micro grinder was designed, and the static, modal and harmonic response analyses of the complete structure were carried out to verify the reasonableness of the overall scheme of the designed micro grinder. According to the results of design and analysis, the experimental prototype of micro grinding machine was developed, and its motion platform can realize three-axis linkage and micron-level motion accuracy, and the speed of the electric spindle can reach up to 80 000 r/min.
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基本信息:
DOI：
中图分类号:TG59
引用信息:
[1]刘之恒,王德祥,崔金磊等.三轴微磨床的研制与龙门选型分析[J].青岛理工大学学报,2024,45(05):104-112.
基金信息:
山东省自然科学基金资助项目(ZR2022ME208)