How to choose machining forward milling and reverse milling

Mechanical processing what is forward milling, what is reverse milling, forward milling refers to the cutting direction of the two interfaces of the workpiece, and the incoming direction of the workpiece, reverse milling refers to the cutting direction of the workpiece and the feed direction of the workpiece back.

The change of forward milling is from thickness to thin, and the change of cutting is from thickness to thickness. Why, reverse milling is traditional milling? The reason is that the traditional milling machine is through ordinary screw drive and nut clearance is very big, in the ordinary iron cutting process, iron because of the clearance of the wire rod, make the tool in cutting process vibration, resulting in the workpiece surface finish is poor, and the tool wear rate is high, and reverse milling can through the tool cut to workbench movement direction, to eliminate the wire clearance, solve the problems of the milling, can participate in heavy cutting processing.

But modern CNC machine processing, it is recommended to adopt the milling, because modern CNC machine tools, generally using ball screw drive, ball rod and nut clearance is small, the precision of transmission, the order will not produce, with ordinary screw problems, and can better improve the surface of processing finish and tool life, this is the machining of milling and reverse milling knowledge, you learned?