EFFECT OF TOLERANCES OF SMALL SIZE SLIDER-CRANK MECHANISM ON POSITION ERRORS AND UNCERTAINTY | ||||
The International Conference on Applied Mechanics and Mechanical Engineering | ||||
Article 59, Volume 18, 18th International Conference on Applied Mechanics and Mechanical Engineering., April 2018, Page 1-13 PDF (1.69 MB) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/amme.2018.35003 | ||||
View on SCiNiTO | ||||
Authors | ||||
E. Rashed1; M. Damir2; A. Elkhatib2 | ||||
1Assistant lecturer, Production Engineering Dept., Faculty of Engineering, Alexandria University, Alexandria, Egypt. | ||||
2Professors, Production Engineering Dept., Faculty of Engineering, Alexandria University, Alex., Egypt. | ||||
Abstract | ||||
ABSTRACT Small size slider-crank mechanisms are used in many accurate and precise sophisticated applications. The design parameters of the mechanism play an important role in defining its performance characteristics. The input-output relations are the main criteria to define its characteristics and hence its capabilities to achieve specific application requirement. The tolerance analysis for mechanism components are a key element for studying and improving mechanism characteristics and its transmission quality. In this paper kinematics models for small size slider-crank mechanism are presented. The models consider the mechanism characteristic range, sensitivity and input-output relations. The effect of mechanism manufacturing and assembly errors such as; components tolerances, joints clearances and assembly deviations were investigated. The study elaborates the effect of these errors on the mechanism characteristic and position uncertainty. A contact approach model is introduced analyzing the effect of joints clearances on mechanism hysteresis error, position uncertainty, and dead zones. The study is further condensed to define the most appropriate design parameters needed for different applications. | ||||
Keywords | ||||
Slider-crank mechanism; Kinematic analysis; Dimensional assembly tolerance; System sensitivity and accuracy; Revolute joint clearances | ||||
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