Functions of Spindle

The spindle is one of the most significant elements of the machine tool. The functions of the spindle of machine tool are described below:

(1) It clamps the workpiece or cutting tool in such type of a manner that the workpiece or cutting tool is reliably held in position throughout the machining operation.

(2) It imparts rotary motion or rotary cum translatory motion to the cutting tool or workpiece.

(3) It is utilized for centering the cutting tool in drilling machine, milling machine, etc. while it centers the workpiece in turrets, boring machine, lathes, etc.