Locating zero outside my Fadal table

sidetrack50 · Jan 18, 2019

My Fadal is up and running and I'm making parts but now I have what I call a radius plate to machine, problem is it's a 26" radius so I need my zero point to be outside my table, does anyone know how to set my "Y" say 6" outside my table. I use to run a Cincinnati Milacron and I use to be able to set X or Y to what ever I wanted.

macds · Jan 18, 2019

pick up a known feature and orientation inside the work envelope, then go to page 2 of the offsets screen "work offsets". Modify offset location by the distance x and y that the "home feature" SHOULD be.
I'm doing this right now with parts im running on my 4th.

706jim · Jan 18, 2019

G92 Y26.0 when machine is at top of 26" arc

macds · Jan 18, 2019

706jim said:
G92 Y26.0 when machine is at top of 26" arc

I can see this causing problems...

706jim · Jan 18, 2019

macds said:
I can see this causing problems...

Well he asked

sidetrack50 · Jan 19, 2019

So you basically can change the edge of the table using edge finder and change it from zero to say 6" in the offset screen?

Greg White · Jan 19, 2019

Fadal won't allow its X&Y offsets (G54 up to G59) to be out in space ?
if so, wow!
Gw

Bobw · Jan 19, 2019

Greg White said:
Fadal won't allow its X&Y offsets (G54 up to G59) to be out in space ?
if so, wow!
Gw

Yeah it does.

macds · Jan 19, 2019

sidetrack50 said:
So you basically can change the edge of the table using edge finder and change it from zero to say 6" in the offset screen?

The offsets are machine position. So if you wanted your offset to be 6"+ from table edge, it would be entered as 26"

sidetrack50 · Jan 19, 2019

So what would be the procedure for this, I'm still trying to remember the programming and I'm working off the monitor. On the Cincinnati I use to machine long 1 x 6 rails and would spot center drill at 40" then move the rail and indicate the center drill spot and call it 40" and continue across the 12' rail, 40, 80, 120 etc.

macds · Jan 19, 2019

sidetrack50 said:
So what would be the procedure for this, I'm still trying to remember the programming and I'm working off the monitor. On the Cincinnati I use to machine long 1 x 6 rails and would spot center drill at 40" then move the rail and indicate the center drill spot and call it 40" and continue across the 12' rail, 40, 80, 120 etc.
View attachment 247310

Indicate the spot centre drill, and call it 0, then have your program move over and spot the next once at 40?
That way your program never changes.

But I dont think im really picking up what youre trying to do.

triumph406 · Jan 19, 2019

macds said:
I can see this causing problems...

I don't see a problem with this.

Please explain where the problem is?

Bobw · Jan 19, 2019

sidetrack50 said:
My Fadal is up and running and I'm making parts but now I have what I call a radius plate to machine, problem is it's a 26" radius so I need my zero point to be outside my table, does anyone know how to set my "Y" say 6" outside my table. I use to run a Cincinnati Milacron and I use to be able to set X or Y to what ever I wanted.

Lot of jabbering, including myself.. What is the actual problem???
Pick up your reference point and then offset.

OR... If you are new to Fadals, then you are new to Fadals, then it is possible
that you are doing something wrong..

How are you setting your offsets?? Are you typing SETX and SETY???

That moves the machine home position... You type SETX and SETY.. ONCE...
EVER!!!! The entire time you own the machine.

If that is what you are doing, then you aren't even using fixture offsets.
Use the fixture offsets.. First space bar menu, #4 set fixture.. FOLLOW THE DIRECTIONS.
You can then offset by going to the offset table. You can get there several ways, the
easiest is first space bar menu, #6 offsets. Then hit the space bar to get to get from
the tool offset screen to the Fixture offset screen, then literally follow the instructions
on the screen to offset your offset to anywhere your heart desires.

Vancbiker · Jan 19, 2019

Just because the center of the arc is outside the travel of the machine does not mean your part zero has to be set there. No real reason I can see to do that. If finger camming the program, then it might make a bit less math, but not a real issue IMO.

sidetrack50 · Jan 19, 2019

I know some basic programming and how the Fadal works but not real familiar with how the offset works. I do use the fixture offset using the edge finder. So basically instead of calling the edge of a part zero (datum) you can change it to any number? I don't change the SETX or SETY. I'm making a fixture to hold 3 radius plates so I can drill 28 holes along a 26" radius. I need to install dowels in a couple locations to locate the radius plates. Strictly finger cam at this point.

Bobw · Jan 20, 2019

sidetrack50 said:
I know some basic programming and how the Fadal works but not real familiar with how the offset works. I do use the fixture offset using the edge finder. So basically instead of calling the edge of a part zero (datum) you can change it to any number? I don't change the SETX or SETY. I'm making a fixture to hold 3 radius plates so I can drill 28 holes along a 26" radius. I need to install dowels in a couple locations to locate the radius plates. Strictly finger cam at this point.

Your offset can be anywhere you want it to be. Zero doesn't have to be the edge of the part,
or the center of the part.. Zzero doesn't always have to be the top of the part...

Especially if you are finger banging it, having the XYzero be the arc center makes sense..

Slap your part down.. First space bar menu, #4,Set Fixture.. Pick your fixture offset #,
enter your edge finder diameter and rpm.. Then #4 Center of circle.. Then follow the
directions on the screen.. [Jog], pick up first point, [Manual], [Jog], pick up second point, [Manual],
[Jog], pick up third point, [Manual].. [C]ompute.. nsert.. And done.

sidetrack50 · Jan 22, 2019

Thanks for your reply, I think I got it, so basically working backwards from zero, instead of setting Y at zero and moving 26" to the radius center you set the radius center at 26" and zero ends up outside the table. Does that make sense?

macds · Jan 28, 2019

triumph406 said:
I don't see a problem with this.

Please explain where the problem is?

Sorry, late back to the thread.

G92 on a mill Fanuc control

G92 is non modal on the fadal control I believe.
I've not tried it on a fadal, but its essentially like assigning a g53, which I also wouldnt do.

My opinion only.

Locating zero outside my Fadal table

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