Design and Analysis of a Planetary Geared Five-Bar Slider Mechanism for Generating Long Dwell Periods

Abstract

Mechanisms designed for repeated operations are widely used in the processing industry, where the output link undergoes a dwell period when the input link constantly moving. A planetary geared five-bar slider mechanism (PGFBSM) generating stroke-time curves with a long dwell has been proposed. The mechanism consists of a planetary gear train with a slider-crank mechanism. Vector loop equations are utilized for synthesizing the PGFBSM for function generation tasks. By varying each PGFBSM parameter while keeping the other parameters constant, a sensitivity study was conducted. The motion curves were plotted and thoroughly examined to identify the variables that significantly impact dwell generation. The kinematic properties of the PGFBSM evaluated analytically are validated by matching the results with those obtained from SOLIDWORKS simulations. The analytical results closely match the simulation results, valid the results and confirm the accuracy of the proposed model. The results demonstrate the ability of the PGFBSM to produce a three-ram press with a 140° long output dwell, a unique feature not found in conventional presses, which can be tailored for specific applications.