THE DYNAMIC STUDY OF AN ASSEMBLY CAM ─ SPRING

Iuliu NEGREAN, Adina CRIŞAN

Abstract


The purpose of the present paper consists in highlighting of the higher order accelerations that occur in the oscillatory motion of a spring as well as in the rotational motion of a cam, both of them part of a cam and follower mechanism. The cam is acted by means of an electrical engine, the rotational motion of the cam being the source of the oscillatory motion performed by the spring. Because the higher order accelerations are characteristic to sudden motions, this paper will demonstrate that the perturbing force applied to the spring as well as the torque are both characterized by a variation law with respect time. The study conducted on the accelerations of higher order will be accomplished by the instrumentality of polynomial interpolation functions of higher order. The results will have at basis, in the future papers, measurements performed on the spring and cam which consists in determining the linear velocity of the spring and of the linear velocity of a point from the circular cam ring periphery respectively.

Key words: mechanics, kinematics, cam and spring, advanced notions, dynamics equations.


Full Text:

PDF

References


R.P. Paul and H. Zhong, 1984, Robot Motion Trajectory Specification and Generation, Second International Symposium on Robotics Research, Kyoto, Japan, August.

R.E. Parkin, 1991, Applied Robotic Analysis, Prentice Hall, Englewood Cliffs, NJ.

L.Sciavicco and B. Siciliano, 2008, Robotics: Modeling, Planning, and Control, McGraw-Hill, New York.

Negrean I., Vușcan I., Haiduc N., Robotics. Kinematic and Dynamic Modeling, Editura Didactică și Pedagogică, R.A. București, 1998

J.J. Craig, 2005, Introduction to Robotics: Mechanics and Control, 3rd edition, Pearson Prentice Hall, Upper Saddle River, NJ.

Appell, P., Sur une forme générale des equations de la dynamique, Paris, 1899.

Negrean, I., Negrean, D. C., The Acceleration Energy to Robot Dynamics, International Conference on Automation, Quality and Testing, Robotics, AQTR 2002, May 23-25, Cluj-Napoca, Tome II, pp. 59-64

Negrean I., Mecanică avansată în Robotică, ISBN 978-973-662-420-9, UT Press, Cluj-Napoca, 2008.

Negrean, I., Energies of Acceleration in Advanced Robotics Dynamics, Applied Mechanics and Materials, ISSN: 1662-7482, vol 762, pp 67-73 Submitted: 2014-08-05 ©(2015)TransTech Publications Switzerland

Negrean I., New Formulations on Acceleration Energy in Analytical Dynamics, Applied Mechanics and Materials, vol. 823 pp 43-48 © (2016) TransTech Publications Switzerland Revised: 2015-09,

Negrean I., New Formulations on Motion Equations in Analytical Dynamics, Applied Mechanics and Materials, vol. 823 (2016),

pp 49-54 © (2016) TransTech Publications.

Negrean I., Advanced Notions in Analytical Dynamics of Systems, Acta Technica Napocensis, Series: Applied Mathematics, Mechanics and Engineering, Vol. 60, Issue IV, November. 2017, pg. 491-502.

Negrean I., Advanced Equations in Analytical Dynamics of Systems, Acta Technica Napocensis, Series: Applied Mathematics, Mechanics and Engineering, Vol. 60, Issue IV, November 2017, pg. 503-514.

Negrean I., New Approaches on Notions from Advanced Mechanics, Acta Technica Napocensis, Series: Applied Mathematics, Mechanics and Engineering, Vol. 61, Issue II, June 2018, pg. 149-158.

Negrean I., Generalized Forces in Analytical Dynamic of Systems, Acta Technica Napocensis, Series: Applied Mathematics, Mechanics and Engineering, Vol. 61, Issue II, June 2018, pg. 357-368.

Fu K., Gonzales R., Lee C., Control, Sensing, Vision and Intelligence, McGraw-Hill Book Co., International Edition, 1987


Refbacks

  • There are currently no refbacks.


JOURNAL INDEXED IN :