摘要
超精密磨削加工已广泛应用于轴对称非球面光学元件及硬脆材料的加工中,加工过程中砂轮的不平衡量和机床主轴引起的砂轮微小振动和摆动将直接影响工件表面质量。本文分析了加工过程中产生的微振动现象,建立磨削中振动引起工件表面轮廓误差的数学模型;设计一套微振动实验系统,建立系统动力学模型并进行实验研究。实验结果表明:优化选择砂轮转速、工件转速和加工进给速度,可有效减小砂轮振动,提高工件表面精度。
Ultra - precision grinding is widely used in process on axis -svmrnetrical aspherical elements and hard - brittle material. the micro vibration and swing evoked by imbanlance of the grinding wheel and principal axis of the machine tools ＇affect the surface quality of the elements directly. Micro vibration phenomena appeared ira the processing was analyzed, a mathenlatie model about the error of elements＇ surface figure evoked by vibration was built, a experiment system of micro vibration was designed and a dynamics model of the svstem was built. The result of experiment shows that choosing a reasonable grinding parameter can effectively reduce vibration of the grinding wheel and improve the precision of elements＇ surface.
出处
《机床与液压》
北大核心
2005年第10期17-20,58,共5页
Machine Tool & Hydraulics
基金
国家"863"高科技资助项目(8638042416)
关键词
非球面加工
微振动
建模
实验
Asphercial process
Micro vibration
Modeling
Experimentation
