Inversion of slider crank mechanism - Whitworth quick return mechanism - Basic Mechanical Engineering

Q.  In the slider crank mechanism shown below, link 2 is fixed. This second inversion of slider crank mechanism is observed in ______
- Published on 01 Sep 15
Slider-Crank-Mechanism.png


a. Reciprocating air compressor
b. I. C. engine
c. Whitworth quick return mechanism
d. Crank and slotted lever quick return mechanism

ANSWER: Whitworth quick return mechanism

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    Discussion

  • Sravanthi    -Posted on 12 Nov 15
    By fixing different links of a chain, different inversions of slider crank chain can be obtained.

    - The first inversion is obtained by fixing link 1 (cylinder and frame). This first inversion of slider crank mechanism is used to convert rotary motion crank into reciprocating motion.

    -Reciprocating air compressor is an example of first inversion of slider crank mechanism.

    - The second inversion is obtained by fixing link 2 (crank). Whitworth quick return mechanism is an example of this inversion. It is used in shaping machines and slotting machines.

    - The third inversion is obtained by fixing link 3 (connecting rod). Crank and slotted lever quick return mechanism is an example of third inversion and is used in shaping and slotting machines.

    - The fourth inversion is obtained when link 4 (slider) is fixed. Hand pump is an example of fourth inversion of slider crank chain.

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