Dynamic fixture offset G54.2

[vincent.pomerleau]

We just bought a rotary table for a our takumi v15 vmc and i never programmed a 4th axis before.i have the fanuc manual but it's not clear for me! I understand the G54.2 track my part when it rotate but what i have to put in the parameters , where i enter my "normal G54"(part origin) and where i put the center of rotation of my rotary! Help will be appreciate!

[fordav11]

you usually won't find anything useful in a Fanuc manual for additional axis, only XYZ.
just set the center like any other work offset.
move tool to center of axis (using dial indicator etc) and set G54/55/56/57/58/59 etc to that position.
usually center of axis at top of part when clamped in chuck is X0 Y0 Z0.
rotary axis is usually addressed with A or B word.
A0 is position where rotary axis is at it's zero return position.
Programming rotary axis is not complicated because it's just a rotary movement.
So G00 A90.0 will rotate A axis 90 degrees. G00 A-90.0 will rotate axis 90 degrees in opposite direction.
Complex example can be something like......
G01 X2.5 Y-1.79 Z-0.500 A32.365

Sometimes additional M codes are required to enable the extra axis before issuing A command.
Or to pass control from main controller to additional axis controller. Then there is usually M commands to
clamp/unclamp rotate axis.
Exact programming depends on extra axis control type. See your additional axis controller manuals for the
programming sequence.

[vincent.pomerleau]

Thanks for your help but that's not exactly what i'm looking for... i want to set de G54.2 that when you rotate the table the works coords shift to suit the correct angle and you just have to set one workpiece coordinate ! By this manner you don't have to pick the center of rotation as G54, you take it on the part, it's useful if your fixture is not everytime at the same place from your center! and you don't have to set one WPC for each angle you work! I know what it do but i want to know how to set it!

[anand76767]

pl use macro prg for this .
develop the prg .use macro system variables for work co-ordinates to transfer the wpc

[vincent.pomerleau]

Do you have one ??? anand76767