Need Help!- U & V address in CNC Programming

[Ashish B]

Hi

What do the U & V addresses refers to..

I have 1 turning centre & it defines the incremental distance in the absolute mode...

like....

G90
G00X0.0Y0.0.............An absolute position on the Part Zero
G01U50.0..................Will move to X50.0 (In absolute terms)
G01X100.0...............Here the tool will move 50mm from the previous location...

Well thats what i interpretated about U,V & W.

But on turning centre it works absoulte Ok,


The problem is on Pinnacle machine (VMC) it shows an P22 alaram..what must be the thing....or is that so in machining centre, such U V & W are not configured.

pLEASE CORRECT ME IF I AM MISSING SOMETHING....

[Al_The_Man]

Some older machines used U,V,W for an incremental or relative move of the X,Y,Z axis.
Absolute move would use the X,Y,Z notation.
Later machines use G90 G91 for Absolute and Incremental.
You would have to refer to the control manufacturers literature to find out which is relevant.
Al.

[Ashish B]

Originally Posted by Al_The_Man Some older machines used U,V,W for an incremental or relative move of the X,Y,Z axis. Absolute move would use the X,Y,Z notation. Later machines use G90 G91 for Absolute and Incremental. You would have to refer to the control manufacturers literature to find out which is relevant. Al.

K...........

Thanks for that info.....

[MarkT]

On most turning centers I deal with the incremental commands are (U) for "X", (W) for "Z" and (H) for "C". The primary advantage from my perspective is when generating gode at the machine. It provides you a quick method of moving the machine (example - relieving a tool after a cut) without having to "do the math".
These are also addresses within numerous canned and multiple repetitive cycles within many controls.
Hope this helps.

Mark T.

[Ashish B]

Originally Posted by MarkT On most turning centers I deal with the incremental commands are (U) for "X", (W) for "Z" and (H) for "C". The primary advantage from my perspective is when generating gode at the machine. It provides you a quick method of moving the machine (example - relieving a tool after a cut) without having to "do the math". These are also addresses within numerous canned and multiple repetitive cycles within many controls. Hope this helps. Mark T.

Ok....Mark....

So is that so that U & W are used mostly on turning centre... Does they exist on a machining centre...???

Sometimes i feel that that these Address used for axis defination are so confusing....For example, "U axis is a relative movement in a turning centre & the same U axis is a taper cutting axis on WireCut"....These Manufacturer have clubbed address so it hard for anybody to interpret it easily..............Well just wanted to express manufacturer's desire...........