Sure. The code G 90 means absolute positioning from one work coordinate system, such as G 54X0Y0. G 91 is incremental positioning from the last position. Now G 90 is much more commonly used as the zero can be moved to any convenient position on the part. G 91 is used to start a new zero from the last commanded position. G91 is used to cut down on the amount of coding and positioning moves. It is frequently used in forth and fifth axis positioning. Using G 91 on regular prismatic and cylindrical parts is much more problematic if you are coding by hand. It is very useful with cam systems on more complex geometry.
Sure. The code G 90 means absolute positioning from one work coordinate system, such as G 54X0Y0. G 91 is incremental positioning from the last position.
Now G 90 is much more commonly used as the zero can be moved to any convenient position on the part. G 91 is used to start a new zero from the last commanded position. G91 is used to cut down on the amount of coding and positioning moves. It is frequently used in forth and fifth axis positioning. Using G 91 on regular prismatic and cylindrical parts is much more problematic if you are coding by hand. It is very useful with cam systems on more complex geometry.
great video. i'm learning as well. i really enjoy learning mastercam from others. any more tips??
Thank u sir very informative video
awesome
Can you please explain about G91 and G90 and give us some examples, please
where are you from?
United States Eastern North Carolina
got a job for me in mastercam??