A presentation on the whitworth quick return mechanism, that covers the historical development of the mechanism, its applications, mathematical analysis, Solidworks and AdamsView Simulation images

1. Whitworth Quick Return
Mechanism

2. INTRODUCTIONThe Whitworth quick return mechanism converts rotary motion into reciprocating motion, but
unlike the crank and slider, the forward reciprocating motion is slower rate than the return
stroke. This is why it is called quick return mechanism.
This mechanism is made of a driving crank and of a driven slider crank. In the considered
configuration, the fixed pivot of the driven crank is located on the outside of the circle on which
the end of the driving crank moves. This leads to an alternated motion of the slider crank.
The angular speed of the driven crank is variable. The duration of the motion for its part
corresponding to the blue arc is shorter than the one related to the red arc. This is why this
device is named quick return mechanism, which was used in crank shapers, with the slow part or
the stroke being used for the working time of the tool and the quick part for the non-productive
time.

3. Theory

5. History
cutting machine by Sir Joseph Whitworth

6. Applications
Rotary engines

7. Power driven Saw machine

8. Shaping machine

9. Water pumping system

10. Slider Crank Mechanism

11. Whitworth (Quick return)
Mechanism

14. Kinematic Analysis of the Whitworth
Quick Return Mechanism (FIG 1)

15. Position Analysis

18. Velocity Analysis

20. Acceleration Analysis

22. Dynamic Analysis of the Whitworth
Quick Return Mechanism

23. Forces on Each Member

24. Figure3 FBD of link 2

29. SIMULATION ON
SOLIDWORKS AND
ADAMS VIEW

30. SOLIDWORKS

31. SOLIDWORKS PARTS

32. STRESS ANALYSIS

33. STRAIN ANALYSIS

34. WORKING ON ADAMS

35. SIMULATION ON ADAMS (SLIDER)

36. SIMULATION (CRANK)

37. SIMULATION (MAIN)

38. THANK YOU

39. References
http://www.robotee.com/LR/51029_Robotee-com-WhitWorthCQuickReturn-
mechanism.pdf
http://metalab.uniten.edu.my/~kamal/documents/Machine%20Design%20Lab/Laborat
ory%20Manual/Whitworth's%20Quick%20Return%20Motion%20Experiment.pdf
http://www.tcsme.org/Papers/Vol33/Vol33No3Paper9.pdf
https://www.youtube.com/watch?v=XT4zt7sYPe0
http://www.mekanizmalar.com/simple_whitworth_quick_return_mechanism.html
http://jeanlouis.blanchard.pagesperso-
orange.fr/english_swf/ppe_fst_quick_return.html
http://textofvideo.nptel.iitm.ac.in/112104121/lec7.pdf
http://metalab.uniten.edu.my/~kamal/documents/Machine%20Design%20Lab/Laborat
ory%20Manual/Whitworth's%20Quick%20Return%20Motion%20Experiment.pdf
http://library.wolfram.com/infocenter/TechNotes/5908/