摘要
自主研发的五轴联动数控工具磨床能够实现对球头立铣刀等多种硬度高、刃形复杂刀具的磨削加工,且一次装夹完成所有的精加工。利用多体动力学理论分别建立磨床的多刚体动力学模型和刚柔耦合动力学模型。利用所建立的动力学模型,分析在其它因素相同,X、Y、Z三轴在不同进给加速度、动静质量比、主轴结合部不同相对刚度下的加工误差。得到了3种影响因素对磨床加工精度的影响,研究结果对磨床的设计与结构优化具有一定的参考意义。
The self-developed grinder with five-axis computer numerical control （ CNC） is able to grind the high hardness and complex tools like ball mills and so on, in addition all precision work could be finished in a single setup. The multi-body dynamics model and rigid flexible coupling dynamics model were built by using multi-body dynamics theory in part. The built dynamics models were used to analyze the machining tolerance in consideration of different feed acceleration, static and dynamic mass ratio and relative stiffness of different coupling of spindle support member. Three kinds of influencing factors for machining accuracy of the grinder are ob-tained, which can provide certain reference to the design and structural optimization of the tool grinder.
作者
张耀娟
杨克
刘维维
ZHANG Yaojuan YANG Ke LIU Weiwei(College of Mechanical Engineering, Beihua University, Jilin Jilin 132021, China)
出处
《机床与液压》
北大核心
2017年第11期152-155,共4页
Machine Tool & Hydraulics
基金
吉林省教育厅"十二五"科学技术研究中重点资助项目(2015159)
关键词
五轴数控工具磨床
刚柔耦合动力学模型
进给加速度
动静质量比
刚度
加工精度
Five-axis CNC tool grinder
Rigid flexible coupling dynamics model
Feed acceleration
Static and dynamic mass ra-tio
Stiffness
Machining accuracy
