双摇杆机构在立方氮化硼研磨技术中的应用

Application of Double Rocker Arm Mechanism in Lapping Process of Cubic Boron Nitride

从运动学和几何学原理出发,建立了双摇杆机构的数学模型,得出了双摇杆机构中工件中心点的运动轨迹方程,用Visual Basic语言编制了相应的计算机仿真软件,以图形的形式显示出运动轨迹曲线。对各杆的长度及相关角度等设计参数进行了优化,成功地将双摇杆机构应用于立方氮化硼等超硬材料的研磨。

On the basis of kinematics and geometry principle, a mathematical model for the double rocker arm mechanism was established. The movement path equation of the workpiece center point on the double rocker arm was derived. The computer simulation software was developed and the path curves have been figured by using Visual Basic language. Before the double rocker arm mechanism was applied in the machining process, the lengthes of variable arms and their correlative angles were optimized. The best parameter combinations which can fulfill the application requirements were found. The optimal mechanism has been applied in the lapping process of cubic boron nitride.