How to determine the cutting depth of smtcl lathe

When precision machining, it is generally advisable to take a radius value of 0.5 or less. During rough machining, it is determined based on the workpiece, tool, and machine conditions. Generally, small lathes (with a maximum machining diameter of 400mm or less) can turn 45 # steel in a normalized state, and the cutting depth in the radial direction generally does not exceed 5mm. In addition, it should be noted that if the spindle speed of the lathe uses ordinary variable frequency speed regulation, when the spindle speed is very low (less than 100-200 revolutions per minute), the motor output power will be significantly reduced, and the cutting depth and feed rate can only be achieved very small.