The base provides a stable foundation for the mill. It usually has mounting holes for leveling and attachment to the floor.
Knee Lead Screw Housing
The knee rests on a lead screw that is attached to the base. This provides vertical travel for the knee, and in turn, the table.
The column is the primary structural element of the knee mill. It is usually a large casting that into which several features are integrated.
The ways are precision guides that allow the column to be moved vertically in a controlled manner. Ways can take different configurations, such as box ways, dovetail ways, and v-ways.
Some mills include a turret that enables the ram to swivel about the vertical axis of the machine.
Ram locks clamp the ram into position for use.
Ram adjusting handle
The ram is positioned by turning the ram adjusting handle. The handle is usually connected to a pinion gear that moves a rack attached to the ram.