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kinematics of machinery by jayakumar pdf free download
Broadly speaking, we can define machine as a device for transferring and transforming motion and force or power from the input that is, the source to the output that is the load. Let me repeat. Machine is the device for transferring and transforming motion and force from source to the load. The motion needs to be transformed as it is being transferred from the source to the load. The type of transformation that is needed is decided by the nature of the input motion, that is available and the type of output motion that is desired. Some typical examples of the available input motion and desired output motion, we are listing now.It may be the input motion available using the form of continuous rotation, whereas a desired output motion is a rectilinear motion or the vice versa. The input motion is a rectilinear motion and we need the output motion in the form of continuous rotation. Sometimes, the input motion may be continuous rotation, whereas the desired output motion is in the form of to and fro oscillation or again the vice versa. That is, the
available input motion may be to and fro oscillation along a straight line however, the desired output motion may be continuous rotation. Sometimes, both input and output motion may be continuous rotation but they may have to take place at different speed. Sometimes, the input motion may be continuous rotation however, the output motion desired is that of an angular oscillation. It also needs from continuous input rotation to be
transformed into intermittent rotary motion. At this stage, let us talk of a real life machine that is, the most common machine tool which we call a lid. Here, the input motion is available at the shaft of the driving motor, which is the input motor, normally located at bottom left end of the machine.