In manual feed turning, the operator manually controls the feed rate of the cutting tool by turning a handwheel or other manual feed mechanism. This allows the operator to adjust the feed rate according to the specific requirements of the workpiece and the cutting conditions.
In automatic feed turning, the feed rate of the cutting tool is automatically controlled by a machine tool controller. The controller uses a predetermined feed rate and adjusts it based on the speed of the spindle and the cutting conditions. Automatic feed turning is typically more efficient and accurate than manual feed turning, but it requires the use of specialized equipment and programming.
One advantage of manual feed turning is that it allows the operator to have more control over the cutting process and make fine adjustments as needed. However, it can be more time-consuming and less precise than automatic feed turning. Automatic feed turning, on the other hand, is generally faster and more consistent, but it requires more complex equipment and programming.