The Difference Between G90 And G94 In Nc Programming

[Lehto Cooley]

the biggest difference between them is that the cutting method is different. 90 is to remove the residual material in the X direction and 94 is to remove the residual material in the Z direction. It can also be understood that 90 is to thin the cylinder and 94 is to shorten the cylinder

that is, one is the diameter direction and the other is the length direction

G90 is the circular cutting command G90 x (U)_ Z（W）_ F_ 10. The value of Z is the coordinate value of the cutting end point of the cylindrical surface
G94 is the end milling operation face cutting cycle command G94 x (U)_ Z（W）_ F_ 10. The value of Z is the coordinate value of the end plane cutting end point

lathes are also different from machining centers. Lathe G90 is a single cycle for machining outer circles, and G94 is a single cycle for end faces.

there is no comparability between lathe G90 and G94 in machining centers