Need Help!- Fanuc-6M Work offset problem

[keyancnc]

Hi friends,
recently i got one VMC with Fanuc-6m controller. but i cant able to make work offset (G54-G59). i am mostly using Fanuc-0i series.so i can able to set the workoffset like, X0 Measure, Y0 measure and Z0 measure.
so i tried to make work offset and i selected 01(G54)offset number. but i cant able to find any measure softkey after inputting X0. kindly tell me the procedure to measure the work offset in Fanuc-6M.
What is the use of Manual Absolute button in 6M controller.



Regards,
Keyan

[angelw]

Originally Posted by keyancnc Hi friends, recently i got one VMC with Fanuc-6m controller. but i cant able to make work offset (G54-G59). i am mostly using Fanuc-0i series.so i can able to set the workoffset like, X0 Measure, Y0 measure and Z0 measure. so i tried to make work offset and i selected 01(G54)offset number. but i cant able to find any measure softkey after inputting X0. kindly tell me the procedure to measure the work offset in Fanuc-6M. What is the use of Manual Absolute button in 6M controller. Regards, Keyan

Keyan,
I'm not aware of any 6M control having a Measure function to apply the Work Shift offset, but if it did exist, it would be a Machine Builder specific option.

Only 6MB controls had the G54/G59 option, and given that you make reference to 01(G54), yours must be a 6MB. On all the 6MBs I've seen over the years, the Work Shift offset is set as follows.

The values set in the offset is the distance from Machine Zero to the Zero point on your workpiece. I'll explain how to set the X,Y offset, because Z depends a bit on your method used to set the Tool Length offsets. If you need to know how to set the Z Work Shift, post back with how you set the Tool Length.

1. Manually Zero Return the machine in X and Y. or via MDI program G91 G28 X0 Y0 to take the slides to the Zero Return position. The Machine Position should read Zero for X and Y. Do this just as a check; you should be able to rely on the Zero return position also being the Machine Zero position.

2. Move the spindle center line to the X, Y Zero position on your workpiece. The coordinates now shown for the Machine Position are the values that have to be input of your X, Y workshift, along with the sign of the coordinates. If the machine's Zero Return position is at the extreme positive position of the slides, then the workshift coordinates will be minus values. The required values have to be manually input into the desired Work Shift offset.

If 01(G54) is the Work Shift to be used in the machining operation, the control defaults to this offset when the power is turned on. If you don't include a G54 to G59 in your program, the program will use G54 by default. This is only the case if another Work Shift has not been programmed since after the power was turned on. Accordingly, its safer and better programming practice to program the desired Work Shift with every tool used in the program.

Bit #0 of #302 is set if Work Shift Offsets are turned on in the control.

Regards,

Bill

[OSHWORKER]

Bit #0 of #302 is set if Work Shift Offsets are turned on in the control.
I am not sure what the above comment means.

Can you help? I am also having an issue finding a way to set the work offsets on a LaBlond Makino with a 6M b Fanuc control.

[sabogas]

I can you tell me how to set the Z Work Shift. I mesure all the tools and put the value on the offset page for the correspondent tool.

I notice another thing that is confused me, i can change the Absolute values of my mitsubishi MPA 50A.Is this normal ???

I use the fanuc 6mb

[higgo]

great info. ive just got a matsuura with the same control fixed up for a bloke. i havn't ran a 6 series for a while and had forgotten half of that! Another question... the atc on the machine wont change unless its in the correct z position... so i want to make the z home position the same as this. At the moment z home is about 4 mm higher than the tool change position. i thought that moving the z home limit switch might work but it seems to home in one spot on the z ballscrew... moving it only moves the home position up one pitch of the screw! I think it looks for the limit switch then orientates the screw to same same spot.
Is there a parameter i need to change? or is it a mechanical thing? sorry to hijack a post just seemed we're both on the same path.