COTTER JOINT(PROBLEM)||DESIGN PROCEDURE||DESIGN OF MACHINE ELEMENTS

Hii everyone,
In this video

I have explained how to design cotter joint(Design of Machine Elements)


Cotter Joint: " A cotter joint is temporary joint and used to connect two coaxial rods or bars which are subjected to axial tensile and or compressive forces."

It consist of

1) spigot : It is the male part of the joint , it has a rectangular slot for passing the cotter through it. Spigot has a collar which rests against the socket end.

2) socket :It is the female part of the joint, it also has a rectangular slot for passing the cotter through it. It has a circular hole in which spigot fits.

3) cotter : is a wedge shaped piece of metal which actually connects two parts which are non rotating.

Cotter is a flat wedge shaped metal piece which is used to connect two rods which transmit the force but without rotation. The force may be axial and of tensile or compressive nature. Cotter is fitted in the tapered slot and remains in its position because of wedge action. This happens because of taper.
Cotter Joint Applications:
1) Lewis foundation bolt

2) connection of the piston rod to cross head of a reciprocating steam engine.

3) valve rod & its stem 4) piston rod to the trail end in an air pump.

5) Cycle pedal sprocket wheel.

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