基于Isight的可变角度主轴刀柄机构设计与优化
Design and optimization of variable angle spindle/tool-holder mechanism based on Isight
李晏 1张明宇 1陈辛波2
作者信息
- 1. 同济大学机械与能源工程学院,上海 201804
- 2. 同济大学汽车学院,上海 201804
- 折叠
摘要
为实现基于三轴数控加工中心的四轴数控加工功能,文中提出了 一种可变角度主轴刀柄机构,其具有低成本的多轴化数控功能升级技术优势.首先,完成可变角度主轴刀柄机构的结构设计,并建立该机构的运动学模型;其次,基于ADAMS/View建立可变角度主轴刀柄机构的参数化模型,并通过Isight平台搭建多目标优化设计流程,以主动臂平均扭矩、主动臂转角及连杆总长度为优化目标,采用NSGA-Ⅱ算法进行多目标优化设计.数值算例的结果表明:相较于原始方案,优化后主动臂平均扭矩减小了 15.5％,连杆总长度减小了 11.3％,且机构内各部件在运动中不发生结构干涉.因此,基于Isight平台对可变角度主轴刀柄机构进行多目标优化设计的方法是可行的,优化后的机构具有更加合理的尺寸参数,可最大限度地发挥可变角度主轴刀柄机构的动力性和经济性.
Abstract
In this article,in order to realize the four-axis CNC machining function based on the three-axis CNC machining center,a variable angle spindle/tool-holder mechanism is proposed,which boasts the low-cost multi-axis CNC function upgrading technology.Firstly,the variable angle spindle/tool-holder mechanism is subject to the structure design,and its kinematic model is set up.Secondly,the parametric model is worked out with the help of ADAMS/View,and the multi-objective optimization design process is formulated through the Isight platform.With the active arm's average torque and angle as well as the connecting rod's total length as the optimization objectives,the NSGA-Ⅱ algorithm is used for multi-objective optimization design.The results of numerical examples show that after the optimization,the active arm's average torque reduces by 15.5％,and the connecting rod's total length reduces by 11.3％,and there is no structural interference in the movement of each part.Therefore,the method of multi-objective optimization design of the variable angle spindle/tool-holder mechanism based on Isight platform is feasible.The optimized mechanism with more reasonable size parameters has maximized power and economy.
关键词
多轴数控加工中心/参数模型/多目标优化/IsightKey words
multi-axis CNC machining center/parametric model/multi-objective optimization/Isight引用本文复制引用
出版年
2024
NETL
NSTL
万方数据