Open AccessInfluence of the cutting precision of the cams on the dynamic performances of the cam mechanisms
Author(s) -
Dinel Popa,
Constantin Popa
Publication year - 2019
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/564/1/012063
Subject(s) - acceleration , displacement (psychology) , standard deviation , gauge (firearms) , angular acceleration , constant (computer programming) , magnitude (astronomy) , surface finish , surface roughness , mechanics , physics , angular velocity , mathematics , optics , control theory (sociology) , materials science , mechanical engineering , computer science , classical mechanics , engineering , statistics , thermodynamics , control (management) , artificial intelligence , psychology , astronomy , metallurgy , psychotherapist , programming language
In this paper, we study the influence of the determination of the external shape of the cam, and of the precision cutting on the imposed values of the reduced acceleration. The study is performed considering a circular cam at which one may analytically determine the displacement and the reduced velocity and acceleration. In the first part of the paper, one performs simulations to determine the external shape with a precision of 0.01 mm and 0.001 mm, that is, the same precision obtained by using a comparison measurer or an indicating snap gauge. For the cam we use an angular step of 1 0 , 2 0 , 5 0 , and 10 0 , and one studies the influence of the rotational step on the values of the reduced acceleration. In the second part of the paper, for the study of the dimensional deviation on the reduced acceleration, one performs two numerical simulations for a periodical deviation of maximum magnitude of 0.05 mm and for a periodical deviation of maximum magnitude of 0.02 mm respectively. Further on, we also realize a study of the influence of roughness of the external profile of the cam on the reduced acceleration. We consider the case in which the roughness is constant on all profile of the cam and the case in which the roughness has random values.