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Journal of Mechanisms最新文献

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Kinematics and jockeying of an eccentric chainwheel drive 偏心链轮传动的运动学与调节
Journal of Mechanisms
Pub Date : 1971-06-01 DOI: 10.1016/0022-2569(71)90029-2
R.M. Peters , D. Fitzgeorge

A chain drive incorporating an eccentric driving sprocket and a concentric driven sprocket is analysed with regard to the output-to-input kinematical relationships and the feasibility of the satisfactory jockeying of the chain on the return span. The output motion is found to have only a low level of harmonic impurity when the input is of constant velocity.

Three methods of jockeying are considered and all are shown to be feasible. Mathematical expressions are derived for the optimum values of the jockey parameters and the relative characteristics are summarised in a table.

分析了一种偏心驱动链轮和同心驱动链轮组成的链传动系统的输出-输入运动关系，以及链轮在返回跨上实现满意调节的可行性。当输入速度恒定时，发现输出运动只有低水平的谐波杂质。考虑了三种方法，并证明它们都是可行的。推导了骑师参数最优值的数学表达式，并以表格形式总结了相关特征。
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引用次数: 3
Synthesis of a five-link mechanism on the basis of prescribed transmission functions 在规定传动功能的基础上合成五连杆机构
Journal of Mechanisms
Pub Date : 1971-06-01 DOI: 10.1016/0022-2569(71)90033-4
V. Handra-Luca

This paper synthesizes the five-link mechanism for the maximum possible number of associated relative positions[1] when the transmission functions of the zero, first and second orders are given[2]. The complex number approach is used together with Newton's method of successive approximations. It is shown that when two driving elements have the same angular speed or when a driving and a driven element have the same angular speed in prescribed positions, the five-link mechanism is equivalent to a four-bar linkage of the type shown in Figs. 2 and 3. The method developed in this paper permits the design of a five-link mechanism for a greater number of associated relative positions than the five possible through the use of the four-bar linkage mechanism. The results are applicable i in the automotive and automation industries.

本文在给定零阶、一阶和二阶传递函数[2]的情况下，综合了具有最大可能关联相对位置数[1]的五连杆机构。复数法与牛顿的逐次逼近法结合使用。结果表明，当两个驱动元件角速度相同或一个驱动元件和一个被驱动元件在规定位置角速度相同时，五连杆机构相当于图2和图3所示类型的四杆机构。本文开发的方法允许设计一个五连杆机构，通过使用四杆连杆机构，可以获得比五个可能的更多的相关相对位置。研究结果适用于汽车和自动化行业。
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引用次数: 0
The proximity perturbation method for the kinematic analysis of six-link mechanisms 六连杆机构运动分析的接近摄动法
Journal of Mechanisms
Pub Date : 1971-06-01 DOI: 10.1016/0022-2569(71)90031-0
Dr. M.O.M. Osman , Dr. W.M. Mansour

A proximity perturbation method for the kinematic analysis of mechanisms is presented. The case of a six-bar linkage is considered to illustrate the procedure and the feasibility of the method. Convergence proved to be rapid and consistent for each iteration. This is an inherent characteristic in the algorithm method. The method is best suited to computer-aided design of complex planar and space mechanisms.

提出了一种用于机构运动分析的接近摄动法。以六杆机构为例，说明了该方法的可行性。事实证明，每次迭代的收敛都是快速和一致的。这是该算法方法的固有特点。该方法最适合于复杂平面和空间机构的计算机辅助设计。
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引用次数: 9
Application of an analogue computer to the synthesis of plane jointed mechanisms 模拟计算机在平面关节机构综合中的应用
Journal of Mechanisms
Pub Date : 1971-03-01 DOI: 10.1016/0022-2569(71)90010-3
Vladimír Brát CSc (Dozent dr.) , Miroslav Václavi'ik (Ing.)

The aim of this paper is to show the possibilities of applying an analogue computer to the synthesis of a plane linkage, and to propose an optimization method for synthesis of these mechanisms. Comparatively easy modelling of the said mechanisms is obtained by use of the vector analysis method. The optimization method chosen is to minimize the integral of the error. The proposed method is first described generally. A detailed procedure of the solution is illustrated by a band-and-linkage mechanism in which the path of the load should be straight.

本文的目的是展示将模拟计算机应用于平面连杆机构综合的可能性，并提出一种综合这些机构的优化方法。采用矢量分析方法对上述机构进行比较容易的建模。所选择的优化方法是使误差的积分最小。首先对所提出的方法进行了概述。一个详细的解决程序是由一个带和连杆机构说明，其中的负载路径应该是直的。
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引用次数: 1
A graphical method for curvature problems in four-bar mechanisms 求解四杆机构曲率问题的图形化方法
Journal of Mechanisms
Pub Date : 1971-03-01 DOI: 10.1016/0022-2569(71)90004-8
K. Lakshminarayana
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引用次数: 2
Displacement analysis of the RCRCR five-link spatial mechanism RCRCR五连杆空间机构的位移分析
Journal of Mechanisms
Pub Date : 1971-03-01 DOI: 10.1016/0022-2569(71)90011-5
Mark S.C. Yuan

Using the method of line coordinates, the input-output displacement equation of the RCRCR five-link spatial mechanism is obtained as a fourth-order algebraic equation. For each set of the input and output angles obtained from the equation, all other variable parameters of the mechanism are uniquely determined. A numerical example is presented, and the accuracy of each set of solutions is verified.

采用线坐标法，得到了RCRCR五连杆空间机构的输入-输出位移方程为四阶代数方程。对于由方程得到的每一组输入和输出角，机构的所有其他可变参数都是唯一确定的。最后给出了一个算例，验证了各解的准确性。
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引用次数: 11
Sixth aerospace mechanisms symposium 第六届航空航天机制研讨会
Journal of Mechanisms
Pub Date : 1971-03-01 DOI: 10.1016/0022-2569(71)90025-5
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引用次数: 0
Mekanismeteknik (Mechanism Technology): Preben W. Jensen: (in Danish). Teknisk Forlag A/S, Copenhagen. (1970) 174 pp., with line drawings; paperback binding Mekanismeteknik(机械技术):Preben W. Jensen:(丹麦语)。哥本哈根Teknisk flag A/S。(1970) 174页，附有线条图;平装绑定
Journal of Mechanisms
Pub Date : 1971-03-01 DOI: 10.1016/0022-2569(71)90016-4
F. Crossley
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引用次数: 0
Contributions to the geometry of cam mechanisms with oscillating followers 对摆动从动件凸轮机构几何的贡献
Journal of Mechanisms
Pub Date : 1971-03-01 DOI: 10.1016/0022-2569(71)90002-4
W. Wunderlich
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引用次数: 35
Einfluesse von gelenkspiel und reibung auf die im getriebe wirkenden kraefte (influences of backlash in the joints and of friction on the forces occurring in linkages 很快就被驱动着关节游戏和摩擦到车轮上所谓的杠状曲柄
Journal of Mechanisms
Pub Date : 1971-03-01 DOI: 10.1016/0022-2569(71)90015-2
F.R.E. Crossley
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引用次数: 0
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