Combined Operation:

1. In order to save the operation and setting time of part, while the part is subjected to machining process, the different operations to be performed are combined together or arranged one after the other, during one setting of the part.
2. This combination process helps not only in saving the setting time but also the accuracy of the operation.
3. The operations can be combined in two ways I. Simulation method: Operations combined together and performed simultaneously. II. Integration method: Operations to be performed combined together in one setting but arranged one after other.

Examples:

1. Simulation Method: Gang milling operations, Straddle milling operation, slot making operations on CNC machining centers etc.
2. Integration Method: Operation on turret lathe, multi spindle automats, CNC operations etc.