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• Equations for N-Lobed Elliptical Gears

• Speed Matching on an Assembly Line
• Multiple Speed
  Cut-Off Cycle
• Linear Motion with
  Quick Return
• Stop and
  Dwell Motion

Linear Motion with Quick Return

Challenge:

Design a quick return mechanism having linear motion during the forward portion of the cycle.

Solution:

Drive the quick return mechanism with elliptical unilobes, as shown. If linearity is required in both directions, elliptical bilobes could be used. Absolute linearity may be achieved using a pair of special function non-circular gears.