Which pairs are higher pairs? - Theory of Machines - 1

Q.  Which pairs are considered as higher pairs?
- Published on 06 Aug 15

a. When transmitting motion, two links have line or point contact between them
b. When transmitting motion, two links have surface contact or line contact between them

ANSWER: When transmitting motion, two links have line or point contact between them

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    Discussion

  • Sravanthi   -Posted on 19 Oct 15
    - If kinematic pairs are classified according to the nature of contact between the links, then they are classified as lower pairs and higher pairs.

    - Lower pairs are formed if two links have surface contact or area contact while transmitting the motion.

    - Sliding or turning motion is possible between the links of lower pairs. Turning, sliding or screw pairs form a low pair.

    - Higher pairs are formed if two links connected have line or point contact between them while transmitting the motion.
    Motion between cam follower is an example of higher pairs.

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