SYNTHESIS OF THE STRAIGHT-LINE LINKAGE MECHANISMS USING FIVEFOLD INTERPOLATION NODES

Authors

  • В'ячеслав Олександрович Харжевський Khmelnytskyi National University, Mechanical Engineering Department, Associate Professor, Ukraine https://orcid.org/0000-0003-4816-2781

DOI:

https://doi.org/10.20535/2305-9001.2015.75.46951

Keywords:

linkages, straight-line mechanisms, synthesis, kinematic geometry, Chebyshev’s points, fivefold interpolation nodes

Abstract

Purpose. To develop the method of the synthesis of straight-line linkage mechanisms which are based on four-bar linkage, with the goal to find a fivefold interpolation node in the coupler plane. It enables to design such mechanisms with high accuracy of approximation to straight line by given values of crank, coupler and rocker of basic mechanism. Design/methodology/approach. Method of synthesis of the straight-line linkage mechanisms is based on the theoretical fundamentals of kinematic geometry of the five infinitesimally close positions of the coupler plane. It enables to design path generating linkages which can produce coupler curves with straight lines at the neighbourhood of interpolation node. Findings. It is found that it is possible to obtain high accuracy of approximation to straight line using Chebyshev’s points which are the fivefold interpolation nodes by given values of links, but such points do not exist at every combination of input parameters. Originality/value. The designed method and obtained results can be used in different fields of machinery where path generation is required, so the solved task has an important practical meaning. On the basis of straight-line linkage mechanisms it is also possible to design dwell linkage mechanisms.

Author Biography

В'ячеслав Олександрович Харжевський, Khmelnytskyi National University, Mechanical Engineering Department, Associate Professor

канд. техн. наук (з 2004), доцент кафедри машинознавства (з 2005 на посаді, вчене звання з 2007), директор навчально-сертифікаційного центру SOLIDWORKS факультету інженерної механіки (з 2011).

http://solidworks.com.ua/ru/spivrobitnyky/vykladachi/doc-harzhevskyj-vo.html

 

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Published

2015-12-06

Issue

No. 75 (2015)

Section

Статті

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