What is the purpose of hydraulic fluid in a milling machine?

The purpose of hydraulic fluid in a milling machine is primarily to convert mechanical energy. Hydraulic systems use fluid under pressure to transmit force and energy, allowing for precise movement and control of various components within the machine, such as the feed and spindle mechanisms. This enables the milling machine to operate efficiently, performing tasks like raising and lowering the table or controlling the movement of the cutting tool.

While cooling and lubrication are important aspects of machining processes, they are often managed by different systems. For instance, coolant fluids are specifically designed to cool the tools and workpieces during machining, and lubricant oils provide lubrication for reducing friction at the cutting edges. Enhancing feed rates is typically a result of the milling machine's design and control system rather than the direct function of hydraulic fluid. Thus, the role of hydraulic fluid focuses more on facilitating mechanical operations rather than the other functions listed.