Investigation of the Motion Characteristics of Parts on a Platform Subjected to Planar Oscillations

Abstract

Positioning applications are very important in a variety of industrial processes, including automatic assembly. This paper proposes a technique for positioning applications that involves employing a platform subjected to planar oscillations along circular, elliptical, and complex trajectories. Dynamic and mathematical models of the motion of a part on the platform were developed to investigate the motion characteristics of the part. The research showed that when the platform was excited in two perpendicular directions by sinusoidal waves, different trajectories of the part’s motion could be obtained by controlling excitation parameters such as the frequencies and amplitudes of the waves and the phase shift between the waves. Furthermore, by adjusting these parameters, the average displacement velocity of the part could be controlled. The results demonstrate that the part can be moved in any direction at a given velocity and can be subjected to complex dense positioning trajectories. Therefore, such a platform can be applied in feeding, positioning, and manipulation tasks.

Kinematic analysis and geometrical parameters justification of a planetary-type mechanism for actuating an inertial vibration exciter

“…Compacting, sieving, screening, and conveying machines are of the most widespread vibratory equipment used in various industries, e.g., machine-building, mining, food-processing, pharmaceutical, agriculture, etc. In order to provide the best performance of the mentioned operations while processing different products, the used vibration exciter should be able to adjust its inertial characteristics according to the prescribed technological conditions [1]. In addition, the design peculiarities of the exciter influence the startup duration and energy consumption of the vibratory equipment [2], as well as the kinematic and dynamic characteristics of the working member (trajectory, velocity, acceleration, overloading, etc.)…”

Generating rectilinear, elliptical, and circular oscillations of a single-mass vibratory system equipped with an enhanced twin crank-type exciter

“…Numerous scientific investigations are devoted to different aspects of the implementation and improvement of vibration machines. For example, the paper [1] considers the possibilities of controlling the conveying speed and direction by means of changing the excitation conditions of a vibrating table. The improved (more accurate) mathematical model of a flip-flop vibratory screen loaded by the materials being processed is derived in [2].…”