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The kinematics of curved profiles mating with a caged idle roller - higher-path curvature analysis
Mechanism and Machine Theory ( IF 5.2 ) Pub Date : 2021-06-10 , DOI: 10.1016/j.mechmachtheory.2021.104414
M. Cera , M. Cirelli , E. Pennestrì , P.P. Valentini

This investigation focuses on the relative motion of a force-closure higher pair mechanism, herein termed caged-roller joint and composed of a cylindrical roller meshing with two slot profiles, carved on different bodies. A distinctive feature of such a mechanism is the pure rolling velocity constraint imposed between its components to limit friction losses. This makes the caged-roller joint an ideal candidate to control the kinematics of high-speed operating devices, such as centrifugal pendulum vibration absorbers.

In this paper, a theoretical framework for the motion of caged-roller joint is proposed, employing intrinsic geometry, higher-path curvature and envelope theory. For design-analysis purposes, the correlations between instantaneous invariants, slots profiles curvature properties and pure rolling conditions within the higher pairs have been established. Eventually, the obtained results have been verified for three particular curves profiles, to test their consistency and offer an immediate application.



中文翻译:

与笼式惰辊配合的曲线型材的运动学 - 高路径曲率分析

这项研究的重点是力闭合高副机构的相对运动,这里称为笼式滚子接头,由一个圆柱滚子与两个槽轮廓啮合,刻在不同的主体上。这种机构的一个显着特征是在其部件之间施加纯滚动速度约束以限制摩擦损失。这使得笼式滚子接头成为控制高速操作装置(如离心摆减振器)运动学的理想选择。

在本文中,采用内在几何学、高路径曲率和包络理论,提出了笼式滚子关节运动的理论框架。出于设计分析的目的,已经建立了较高对内的瞬时不变量、槽轮廓曲率特性和纯滚动条件之间的相关性。最终,获得的结果已经针对三个特定曲线轮廓进行了验证,以测试它们的一致性并提供直接应用。

更新日期:2021-06-10
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