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Li Tuanjie
School of Electromechanical
Engineering,
Xi'an University,
Xi'an 710071, China
Cao Weiqing
Department of Mechanical Engineering, Xi'an University of
Technology,
Xi'an 710048, China
Zhang Xuefeng
School of Electromechanical
Engineering,
Xi'an University,
Xi'an 710071, China |
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DIMENSIONAL
SYNTHESIS OF PLANAR GEARED
FOUR-BAR LINKAGES
WITH
PRESCRIBED
DWELL CHARACTERISTICS*
Abstract: Geared linkages are useful combined mechanisms, which can be formed by combining planar linkages with one or more pairs of gears. As a result output motions can be obtained with reversing, nonreversing without dwell or nonreversing with dwell. As an example consider the design of the regressive and irregressive two-gear four-bar linkages with prescribed dwell characteristics. First of all, the non-linear equations are derived from the instantaneous dwell conditions. Then a simplified algorithm is given, including relevant analytical solutions and the crank existing conditions, and the homotopy iteration method is introduced to solve the non-linear equations, all solutions can be found easily without initial value selection. Finally the numerical examples are provided.
Key words:
Geared four-bar linkages Dimensional synthesis Instantaneous dwell Homotopy iteration method
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