1.盐城工学院 机械优集学院, 江苏 盐城 224051
赵世田(1979— ),男,山东日照人,博士,讲师,主要从事数控技术、CAD/CAM技术研究。
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赵世田,付莹莹,郑雷等.平行分度凸轮机构建模与运动仿真分析研究[J].机械传动,2020,44(03):52-56.
Zhao Shitian Fu Yingying Zheng Lei Xiao Haining Lu Ziheng.Research on the Modeling and Kinematic Simulation Analysis of Parallel Indexing Cam Mechanism[J].Journal of Mechanical Transmission,2020,44(03):52-56.
赵世田,付莹莹,郑雷等.平行分度凸轮机构建模与运动仿真分析研究[J].机械传动,2020,44(03):52-56. DOI: 10.16578/j.issn.1004.2539.2020.03.009.
Zhao Shitian Fu Yingying Zheng Lei Xiao Haining Lu Ziheng.Research on the Modeling and Kinematic Simulation Analysis of Parallel Indexing Cam Mechanism[J].Journal of Mechanical Transmission,2020,44(03):52-56. DOI: 10.16578/j.issn.1004.2539.2020.03.009.
针对平行分度凸轮机构设计和验证问题,提出一种平行分度凸轮建模和分度机构运动仿真分析方法。通过对平行分度凸轮机构的分度运动进行分析,利用齐次坐标变换法建立平行分度凸轮轮廓曲面数学模型,软件编程采集轮廓曲面数据点,用Creo建立机构三维模型并装配后输出到Adams,建立机构虚拟样机并进行运动学特性仿真。对仿真数据绘制的运动规律特性曲线与理论曲线进行对比分析。结果表明,角加速度曲线波动较大,机构存在的冲击和振荡,主要位于不同的滚子退出和进入啮合阶段与不同滚子工作轮廓曲线交接处;给出对应的设计改进和加工措施,即采用圆角过渡工作轮廓曲线交点、提高轮廓曲线数据点采样精度、选择合适的运动规律及样条曲线插补加工轮廓曲面能减少机构运动的冲击和振荡。
Aiming at the design and verification of parallel indexing cam mechanism,a method of parallel indexing cam modeling and kinematic simulation analysis of indexing mechanism is proposed. Through the analysis of the indexing motion of parallel indexing cam mechanism,the mathematical model of the contour surface of parallel indexing cam is established by using the homogeneous coordinate transformation method,the data points of the contour surface are collected by software programming,the three-dimensional model of the mechanism is established by Creo and output to Adams after assembly,the virtual prototype of the mechanism is established and the kinematic characteristics are simulated. The characteristic curve of motion law drawn by simulation data is compared with the theoretical curve. The results show that,the angular acceleration curve fluctuates greatly,and the impact and oscillation of the mechanism are mainly located at the intersection of different roller exit and entry meshing stages and different roller working contour curves. The corresponding design improvement and processing measures are given,that is,adopting fillet transition working contour curve intersection,improving the sampling accuracy of contour curve data points,selecting appropriate motion rules and spline curve interpolation can reduce the impact and oscillation of mechanism motion.
平行分度凸轮 齐次坐标变换 Creo 三维建模 Adams 仿真
Parallel indexing camTransformation of homogeneous coordinateCreo3D modelingAdamsSimulation
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