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Abstract: A quick return mechanism incorporating noncircular gears is
presented. During the course of designing, the noncircular gears’ pitch
curves are divided into two parts to discuss, i.e. uniform-velocity
range and accelerating range. Two kinds of superior speed-ratio
functions are accquired by comparing three kinds of speed-ratio
functions which are attained here. The designed mechanism can make the
output part get uniform velocity in the working area and better quick
return character. It is more suitable for different needs than
traditional six-bar quick return mechanism in practical applications.
Key
words: Quick
return mechanism Noncircular gears Pitch curves
CLC No: TH132.4
Received
20041230, received in revised form 20050613
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