Dynamic Probing Trouble

[SnowDay]

Hi All,

I am trying to do some probing while I have dynamic rotation active on my 5 axis Mazak. But it is not working I keep getting probe errors. Probe Obstructed, probe fail. I am not sure I can probe while G54.2P1 is active to begin with so I don't know if its my code or the machine. Any help would be great. The goal of this probe cycle is to touch a cast surface and place the deviation of its location into my Z shift. I have included my probe cycle and drill cycle.

 

Thank You,

MC MR2

Renishaw OMP60

Mazak Variaxis 630 5X

Inspection Plus Software

 

 

N484 M00

(8002 Z FACE DATUM SHIFT SET )

N486 G90

N488 T80

N490 M6

N492 G90G80G40G0

N494 G91G28Z0

N496 G90

( FIRST POSTION FROM YOUR DRILL CYCLE)

N498 G54G00G90X0.Y5.54A-90.C-180.

( SECOND POSTION FROM YOUR DRILL CYCLE)

N500 G43H80G54.2P1X0.Y5.54Z10.3A-90.C-180.

( ENTER Z LOCATION OF SURFACE +2" )

N502 G65P9810Z8.3F100

( ENTER Z LOCATION OF SURFACE )

N504 G65P9811Z6.3Q2.5

N506 G54.2P0G53Z0.

N508 G91G0G28Z0

N510 G30X0

N512 G28Y0

N514 G90

N516 #5203=#137

N518 M00 ( YOU MUST RESET DATUM SHIFT BACK TO ZERO )

( WHEN YOU ARE DONE USING IT OR MAKE SCRAP )

(TOOLPLANE NAME - TOP)

(.718 SOLID CARBIDE DRILL)

N520 T30

N522 M6

N524 G91G28Z0.

N526 G54G00G90X0.Y5.54A-90.C-180.S800M03

N528 M8

N530 M51

N532 M131

N534 G43H30G54.2P1X0.Y5.54Z10.3A-90.C-180.T26

N536 G98G81Z4.05R6.55F9.

N538 G80

N540 M9

N542 M05

N544 G54.2P0G53Z0.

N546 G91G28Z0.

N548 G28Y0.

N550 G30X0.

[Guest CNC Apps Guy 1]

IS it a FANUC Control or Fusion?

[robk]

quote:

---

I am not sure I can probe while G54.2P1 is active to begin with so I don't know if its my code or the machine.

---

You can't use your probe cycles with dynamic offset. We have a Variaxis 730 with Matrix control.

[robk]

See the Features, cycles and limitations part of your manual for the comprehensive description.

 

 

This is directly from the Renishaw Inspection Plus Software manual;

 

quote:

---

DYNAMIC WORK OFFSETS

--------------------

 

Addition codes #5121 #5122 & #5123 are used within the software. These codes allow the software to

run in normal mode and dynamic mode.

 

This software can only be used in dynamic mode to measure component features and positions, it can

not be used to update work shifts when G54.2 is active.

 

To update the dynamic offsets parameter S5 (X & Y) & S12 will need to be used in calculations as

shown below.

 

Using this example should give you a figure in X & Y which is the difference between the centre

of table rotation in XY and the centre of the part in XY, these must be within a small amount

otherwise the control gives an alarm (I think it is 3mm). The Z is not controlled to the same

tolerance and can be quite big.

 

 

O00001004(XYZ DYNAMIC OFFSET EXAMPLE)

(LOAD G54XYZ)

#5221=-315.(LOAD G54X TO TABLE CENTRE)

#5222=-315.(LOAD G54Y TO TABLE CENTRE)

#5223=-399.(LOAD G54Z TO COMPONENT FACE)

 

 

G91G0G28Z0

G90

T80M6

 

G54X0Y0

 

G43Z100.

 

G65P9810Z80.F3000

G65P9814D40.Z20.0S1.(UPDATE G54 XY)

 

(CALCULATE XY DYNAMIC VALUES)

#100=#5221-[-315]

#101=#5222-[-315]

 

(-315.000 OBTAINED FROM PAR S5)

 

G65P9810X30.Y-30.

 

G65P9811Z0.S1.(UPDATE G54 Z)

 

(CALCULATE Z DYNAMIC VALUE)

#102=689.984+#5223

 

(689.984 OBTAINED FROM PAR S12)

 

(LOAD XYZ DYNAMIC VALUES G54.2P2)

G90G10L21P2X#100Y#101Z#102

 

G91G0G28Z0

G90

M30

---

[SnowDay]

"This software can only be used in dynamic mode to measure component features and positions, it can

not be used to update work shifts when G54.2 is active."

 

I have a different probe cycle that sets my dynamic offsets.

 

I am not trying to update a work offset just probe a Z surface then transfer this value with vraiables. But I can't get the probe to touch the surface?

 

I have a Matrix control.

 

Thank You,

[robk]

The above quote was from Renishaw, but according to applications @ Mazak it will not work. I have tried probing with G54.2 a couple of years ago and had no luck. I contacted Mazak and I was told it was not possible. None of my probe routines for the Variaxis are used with dynamic offset active.

[SnowDay]

So I guess I have to keep getting into the machine with gage blocks stop the program enter the shift value then restart the program. Seems like the probe should be able to do this for me. Oh well

 

Thank You,

[robk]

I wish that I could help you, but I am swamped with work. Not knowing what your part looks like can you get your hits along X or Y axis then do some math calculations with your variables?

[Joe788]

SnowDay,

 

Do you have anything else weird going on when you get the probe obstructed and probe fail alarms? These are alarms I only get when the batteries start to get low, or the optical receiver is has covered with chips.

 

Probe Obstructed should usually only happens if....well, as the name implies, the probe is obstructed. If you hit an obstruction during a protected positioning move, or during a retract move on measuring cycle. If you're getting that alarm on a 9811 single surface measure move, there's something wacky going on.

 

Perhaps single block through the macro when you reach your first 9811 call, and see if your distance to go readout does anything it should not be doing? From the manual excerpt that Rob posted, it looks like you should have no problem measuring that Z height and storing it somewhere else.

[SnowDay]

I can probe fine when not in dynamic so I think the problem is coming from the G54.2P1 Comand.

 

Thanks,

[Ron Branch @ 5th Axis]

Can you use a standard offset set to the transition point. Then from there have a macro do the math needed to take that offset and then update the current offset to the correct position? It would be one heck of a macro, but I think with a little bit of thought you could capture what you need in one place store it over in the macros, then do the math needed based off the setting you give it then have it change what ever you wanted on the machine. Just something to think about.

[SnowDay]

Right now I just hand wheel the probe down to the surface after I zero out the Z on my control. Then put the shift in myself. I could do some probing while not in dynamic then some math but it seems like it would not be worth all the effort since I have very small run sizes 1-5.