弧面分度凸轮工作轮廓曲面的反求与构建  

Reverse design and construction of the working profile surface of a globoidal indexing cam

作　　者：史诺 刘琼 李耀 SHI Nuo;LIU Qiong;LI Yao(College of Mechanical Engineering,Xi’an Aeronautical Institute,Xi’an 710077,China;College of Computer Science,Xi’an Aeronautical Institute,Xi’an 710077,China)

机构地区：[1]西安航空学院机械工程学院,西安710077 [2]西安航空学院计算机学院,西安710077

出　　处：《兵器装备工程学报》2023年第6期279-285,共7页Journal of Ordnance Equipment Engineering

摘　　要：针对弧面分度凸轮工作轮廓曲面形式复杂、设计难度大的问题,提出了一种利用运动仿真技术手段构建曲面的方法。根据弧面分度凸轮与分度盘之间的共轭接触状态,建立工作轮廓曲面的数学模型,以此为基础确定弧面分度凸轮机构的共轭运动规律及基本结构参数,通过分度盘的运动状态反求得到工作轮廓曲面,并进行仿真计算,输出分度盘的角位移、角速度、角加速度以验证曲面的准确性。结果表明,基于运动仿真的反求设计方法获取的弧面分度凸轮工作轮廓曲面能够实现预期运动规律,可显著提高设计效率,为复杂分段曲面的构建带来极大的便利。To solve the problems of complex form and difficult design of the working profile surface of a globoidal indexing cam,this paper proposes a method of constructing the cam surface by means of motion simulation technology.According to the conjugate contact state between the cam and the indexing plate,a mathematical model of the working profile surface is established.Based on this,the conjugate motion law and basic structure parameters of the cam mechanism are determined.The working profile surface is then obtained through the reverse design of the motion state of the indexing plate.Besides,simulations are carried out to output angular displacement,angular velocity and angular acceleration of the indexing plate to verify the accuracy of the surface.The results show that the working profile surface of the globoidal indexing cam obtained through the reverse design based on the motion simulation can achieve the expected motion rules.It can significantly improve the design efficiency,and bring great convenience to the construction of the complex sectional surface.

关 键 词：弧面分度凸轮 工作轮廓曲面 分度盘 运动仿真 反求设计 

分 类 号：TH132.47[机械工程—机械制造及自动化]