Explain the technical and economic factors that led to the development of machining centers. Spindle speeds in machining centers vary over a wide range. Explain why this is so, giving specific...

Explain the technical and economic factors that led to the development of machining centers.

Spindle speeds in machining centers vary over a wide range. Explain why this is so, giving specific applications.

Explain the importance of stiffness and damping of machine tools. Describe how they are implemented.