How to determine the feed rate of smtcl cnc

F mainly depends on the surface roughness requirements of the workpiece processing. When precision machining, the surface requirements are high, and the cutting amount should be small: 0.06~0.12mm/spindle per revolution. When rough machining, it can be larger. It mainly depends on the strength of the tool, which can generally be above 0.3. When the main rake angle of the tool is large, the strength of the tool is poor, and the feed rate cannot be too large. In addition, the power of the machine tool and the rigidity of the workpiece and cutting tool should also be considered. The CNC program uses two units of feed rate: mm/min and mm/spindle per revolution. The units used above are all mm/spindle per revolution. If mm/min is used, the formula can be used to convert it: feed rate per minute=feed rate per revolution * spindle revolutions per minute