Theory of Machines: Unit I: Kinematics of Mechanisms

mechanism

Mechanism Vs Machine

A mechanism is defined as a closed kinematic chain in which any one link is fixed.

MECHANISM

A mechanism is defined as a closed kinematic chain in which any one link is fixed.

The mechanism should have a constrained motion. If all links of a kinematic chain are free, the motion will be unconstrained. When one link is fixed, it becomes mechanism.

If different links of a kinematic chain are fixed, the result is a different mechanism.

The primary function of a mechanism is transmit and modify motion.

1. Mechanism Vs Machine

A machine is a mechanism or a collection of mechanisms which transmits both motion and forces.

The mechanism is a device to transmit and modify motion. If the device also transmits forces, in addition to motion, then the mechanism is called as machine.

It may be noted that all machines are mechanisms, but all mechanisms are not machines.

The difference between mechanism and machine is presented in Table 1.3.

Table 1.3. Mechanism Vs Machine



Theory of Machines: Unit I: Kinematics of Mechanisms : Tag: : Mechanism Vs Machine - mechanism