Authors: I.V. Bychkov, L.T. Dvornikov, I.A. Zhukov

Title of the article: The kinetostatic analysis of the four-link group of assur with a closed loop on the example of the mechanism of met-allurgical parallel shears

Year: 2018, Issue: 4, Pages: 32-37

Branch of knowledge: Mechanical engineering and machine science

Index UDK: 62-231.1

DOI: 10.26730/1999-4125-2018-4-32-37

Abstract: In the kinematic chains of mechanisms, flat four-link Assur groups with a closed variable contour are often used, which are difficult to investigate by standard methods of the theory of machines and mechanisms. The aim of this paper is, in particular, the analytical justification of such a method, which makes it possible to investigate a group of four links, one of the input kinematic pairs of which is made translational. The method of investigation consists in determining the point of intersection of two independent links, that is, the links having no common kinematic pairs. Relative to this point, the tangential component of the reaction in one of the hinges is determined. Knowing the direction of the normal component of this reaction and the direction of the reaction in the progressive pair, we determine all unknown external forces by constructing a plan of forces. This method was applied in the study of a similar group of links that are part of the mechanism of parallel shears. The method described in this paper can be used to solve other similar problems.

Key words: parallel shears metallurgical equipment kinetostatic analysis four-link group

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