Which machine is specifically designed for the machining of curves and holes?

The milling machine is specifically designed for machining curves and holes due to its versatility and range of functionalities. It is equipped with a rotating cutter that can remove material from a workpiece, allowing for intricate shapes and profiles to be cut with precision.

Milling machines can be set up to work on various planes and contours, which enables them to produce complex geometries that may include curves, slots, and circular holes. Additionally, the tool's ability to move in multiple axes further enhances its capability to create detailed designs that are often required in precision machining work.

The other machines mentioned, such as sawing machines, lathes, and drilling machines, have specific functions that may not focus on the broad range of curves and complex hole shapes that milling machines can achieve. For instance, while lathes are excellent for creating cylindrical shapes and drilling machines are specialized for making round holes, neither can effectively replicate the range of profiles that a milling machine offers. Thus, the milling machine stands out in its unique ability to handle curves and various hole configurations with ease and accuracy.