H and D offsets

[CNCMike]

We are using a Fanuc-OM controller in which the tool offsets are currently setup 1 thru 99. For T1 we use offset 1 for H and offset 2 for D. For T2 we use offset 3 for H and offset 4 for D........

I have been told there is a way to change this so you have a single offset for T1 (H1 D1) and a single offset for T2 (H2 D2)....... eliminating the need for two offsets per tool. Does anyone have any suggestions on how to change this? I hope I explained it well enough to understand our situation.

Thanks, Mike

[hoidahl]

WHAT WE HAVE DONE IS USE OFFSET 1 FOR H AND OFFSET 51 FOR D ON TOOL 1. OFFSET 2 FOR H AND OFFSET 52 FOR D ON TOOL 2 AND SO ON.

[CNCRim]

Originally Posted by CNCMike We are using a Fanuc-OM controller in which the tool offsets are currently setup 1 thru 99. For T1 we use offset 1 for H and offset 2 for D. For T2 we use offset 3 for H and offset 4 for D........ I have been told there is a way to change this so you have a single offset for T1 (H1 D1) and a single offset for T2 (H2 D2)....... eliminating the need for two offsets per tool. Does anyone have any suggestions on how to change this? I hope I explained it well enough to understand our situation. Thanks, Mike

Mmmmm, OM controller if it does had tool lenght and radius compensate why not take advantage of it. But from what I remember it I don't think you have two offset for one column, I could be.

[CNCMike]

Hoidahl,
We have done exactly what you said in the past, but so far we can not get Mastercam to give us what we need. It is giving us T1 H1 D1. I end up changing the D's to + 10 or +20...... manually throughout the program.

New Texas,
You are right, we only have one column per tool. We are trying to get two columns per tool. Both H and D.

Mike

[psychomill]

You need to turn on Tool Offset type B for what you're looking for. Call FANUC, sorry, I don't give out option parameters. But, for some reason, the back of my mind is telling me that OM controls can't run Type B (or is it Type C?? can't remember). You'd have to check. I no longer have any O controls and haven't been on one for many years.

What Hoidahl suggests is the most common method of using H/D on a type A system (what you have right now). Most people use 1,2,3, etc for H and then just add a value like +20, +30, +40 (something beyond your max tool quantity or magazine size) for setting D values.

For the post issue, what version Mastercam are you running? I can probably help you out with the post file or config setting to get the D numbers the way you want.

[CNCMike]

Psychomill,
We are using Mastercam X2.

Mike

[CNCRim]

Originally Posted by CNCMike Hoidahl, We have done exactly what you said in the past, but so far we can not get Mastercam to give us what we need. It is giving us T1 H1 D1. I end up changing the D's to + 10 or +20...... manually throughout the program. Mike

It's pain in the rear edit manually evertime, you can make a small macro program in Word..... then you can make change with a push of button.

[cnc-it]

Hi Mike,

I'm not familiar with Mastercam but is it not possible to assign the correct H and D numbers for each tool in the Mastercam tool library so that when the post brings a tool up it automatically uses the correct numbers.

This is how it is done in Dellcam Featurecam.

John.

[hoidahl]

we use gibbscam they make it easy to change tool offsets. The tool dialog lets you put in different numbers for length and diameter.

[CNCMike]

Thank you for the suggestions, but we would like to try the easiest route first. We felt it would be changing the Fanuc parameter. If not we will look into changes in MCX2 or some other means of getting offsets to work.

Mike

[dcoupar]

You should contact your dealer or Fanuc and purchase the option. I believe, however that you want Tool Offset "C".

[psychomill]

Mike, there's a couple places you can switch on the "Add number" for comp in MCX. Also, depending what post you're using can have some effect. I'm working at home today so no X (left my laptop at work.... how convenient..). Do you know if your post was written for X or is it converted from an older version?

Off the top of my head, if you go to the Control Definition of the machine/post you're using, there's a page for comp settings D and H. I'd start there.... For the machine itself, contact FANUC or machine dealer.....