Open AccessDesign and analysis of a new bicontact cam mechanism
Author(s) -
Stelian Alaci,
Florina-Carmen Ciornei,
Florentin Buium
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/997/1/012066
Subject(s) - mechanism (biology) , kinematics , work (physics) , software , element (criminal law) , computer science , cad , constant (computer programming) , movement (music) , mechanical engineering , engineering , engineering drawing , physics , classical mechanics , quantum mechanics , law , political science , acoustics , programming language
Based on an observation from a previous work, the authors use the degree of passive freedom of a mechanism with roller follower to propose a new type of mechanism. In the new mechanism, the roller is replaced by a jointed element that forms two contacts with the cam. The obtaining of the cam profile is the main disadvantage of the cam mechanisms but in the present work, by using a cam formed by two connected discs, it is aimed to be avoided. The method is illustrated by designing the mechanism in CAD software followed by the simulation of its movement. To optimize the movement of the final element, the equivalent mechanism with lower pairs is used which has the advantage that the lengths of the elements are constant. The kinematics of the final element is particularly sensitive to the variation of the dimensions of the mechanism, fact illustrated by an example.