contributor author | Bijlsma | |
contributor author | Bob G.;Radaelli | |
contributor author | Giuseppe;Herder | |
contributor author | Just L. | |
date accessioned | 2017-12-30T11:43:24Z | |
date available | 2017-12-30T11:43:24Z | |
date copyright | 9/18/2017 12:00:00 AM | |
date issued | 2017 | |
identifier issn | 1942-4302 | |
identifier other | jmr_009_06_061003.pdf | |
identifier uri | http://138.201.223.254:8080/yetl1/handle/yetl/4242797 | |
description abstract | A gravity equilibrator is a statically balanced system which is designed to counterbalance a mass such that any preferred position is eliminated and thereby the required operating effort to move the mass is greatly reduced. Current spring-to-mass gravity equilibrators are limited in their range of motion as a result of constructional limitations. An increment of the range of motion is desired to expand the field of applications. The goal of this paper is to present a compact one degree-of-freedom mechanical gravity equilibrator that can statically balance a rotating pendulum over an unlimited range of motion. Static balance over an unlimited range of motion is achieved by a coaxial gear train that uses noncircular gears. These gears convert the continuous rotation of the pendulum into a reciprocating rotation of the torsion bars. The pitch curves of the noncircular gears are specifically designed to balance a rotating pendulum. The gear train design and the method to calculate the parameters and the pitch curves of the noncircular gears are presented. A prototype is designed and built to validate that the presented method can balance a pendulum over an unlimited range of motion. Experimental results show a work reduction of 87% compared to an unbalanced pendulum and the hysteresis in the mechanism is 36%. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Design of a Compact Gravity Equilibrator With an Unlimited Range of Motion | |
type | Journal Paper | |
journal volume | 9 | |
journal issue | 6 | |
journal title | Journal of Mechanisms and Robotics | |
identifier doi | 10.1115/1.4037616 | |
journal fristpage | 61003 | |
journal lastpage | 061003-9 | |
tree | Journal of Mechanisms and Robotics:;2017:;volume( 009 ):;issue: 006 | |
contenttype | Fulltext | |