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The Whitworth quick return motion mechanism has the driving crank AC=150 mm long.The distance between fixed centres CD= 100 mm. The line of stroke of

The Whitworth quick return motion mechanism has the driving crank AC=150 mm long.The distance between fixed centres CD= 100 mm. The line of stroke of the ram passesthrough the centre of rotation of the slotted lever whose free end is connected to theram by a connecting link. Find the ratio of time of cutting to time of return.

  

Az P1 D P2. A1 R R2 8/2 A P. PT

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