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Probing Routine - Renishaw/Haas


Bill H
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21 minutes ago, FLR169 said:

I6. J-.5 I6. J-.5 I.5 J-5. S1 (P2 TO P4)

The first thing I notice, is that you've got 4 points (initial XY, plus 3 pairs of I/J values), but only 3 unique points.

  1. X0.5 Y-0.5 < [1st Point]
  2. I6.0 J-.5 < [2nd Point]
  3. I6.0 J-.5 < [3rd Point, same as Point 2]
  4. I0.5 J-5. < [4th Point]

Try changing that 3rd Point to I6.0 J-5.0 

Also, add a "U" parameter (max stock allowance, or upper limit). I would use "U0.08", or "U0.1", or "U0.120", to give yourself some "room" to find the highest point.

Setting "Z0.25" will take the highest point, and set your Work Offset Z Value to be -0.25 below that highest point. Is that what you want?

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37 minutes ago, Colin Gilchrist said:

The first thing I notice, is that you've got 4 points (initial XY, plus 3 pairs of I/J values), but only 3 unique points.

  1. X0.5 Y-0.5 < [1st Point]
  2. I6.0 J-.5 < [2nd Point]
  3. I6.0 J-.5 < [3rd Point, same as Point 2]
  4. I0.5 J-5. < [4th Point]

Try changing that 3rd Point to I6.0 J-5.0 

Also, add a "U" parameter (max stock allowance, or upper limit). I would use "U0.08", or "U0.1", or "U0.120", to give yourself some "room" to find the highest point.

Setting "Z0.25" will take the highest point, and set your Work Offset Z Value to be -0.25 below that highest point. Is that what you want?

This is actually what i ran this morning 

It gave me a 1092 probe open alarm

What I want to accomplish is 

Measure the 4 corners

Take the longest measurement (which will be my lowest corner)

Say Z -22.115 ( biggest Z / lowest corner)

Have my new Z offset be Z-22.130

So add 15 thou to longest Z 

Hope that makes sense

Mike

 

 

20210616_084009.jpg

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@Colin Gilchrist

Ok

So i changed the Z.25 To Z-.015

It ran without an alarm

So i probed all 4 corners individually to see what is what 

P1 = -17.4552

P2 = -17.4767

P3 = -17.4825

P4 = -17.4657

After running the G65 P9820 

The G54 Z populated with -17.4676

I'm stoked that I'm getting closer

Biggest Z is P3

So i need that + .015

Ah.... a doh moment

I need to change the minus 15 thou to a plus 15 thou

And boom I get the right #

Wish I could come spend some time with you guys to really get this macro stuff figured out.

My only other ? Is

Do I need to add the U and if so what value

And I'm not a 100% sure what U is doing

Mike

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3 hours ago, FLR169 said:

@Colin Gilchrist

Ok

So i changed the Z.25 To Z-.015

It ran without an alarm

So i probed all 4 corners individually to see what is what 

P1 = -17.4552

P2 = -17.4767

P3 = -17.4825

P4 = -17.4657

After running the G65 P9820 

The G54 Z populated with -17.4676

I'm stoked that I'm getting closer

Biggest Z is P3

So i need that + .015

Ah.... a doh moment

I need to change the minus 15 thou to a plus 15 thou

And boom I get the right #

Wish I could come spend some time with you guys to really get this macro stuff figured out.

My only other ? Is

Do I need to add the U and if so what value

And I'm not a 100% sure what U is doing

Mike

U should be "max distance above the target value".  Look at the point spread between min/max. If you set U0.02, and there was a Point 0.021 above the Target Z, it would trigger an alarm.

Do you have the Inspection Plus PDF Manual?

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18 hours ago, Colin Gilchrist said:

U should be "max distance above the target value".  Look at the point spread between min/max. If you set U0.02, and there was a Point 0.021 above the Target Z, it would trigger an alarm.

Do you have the Inspection Plus PDF Manual?

Sorry for the late response. And thanks for your help. It's greatly appreciated.

To understand correctly the U. In my above post with my probed P1 to P4 the biggest difference is P1 and P3 at 27 thou.

So if I had a U 0.02  that would have generated an alarm. 

Yes I have a printed copy of Inspection Plus manual at work and a copy on my home PC. I need to read more and experiment. 
We build subway and street cars for mass transit. We have a big SNK 5 face mill. When they machine the truck frames they always have so many issues and some failed inspections and then the truck needs to be reloaded and fixed. Pain in the xxxx. The SNK has a spindle probe and it has never been utilized. So hopefully when we get another contract of truck frames the probe can be used to make life a weeeeee bit easier. The other problem is, no one is experienced enough to program the probe. The shop programmer has no idea. What software would be used in conjunction with MasterCam. I think work would benefit from bringing in an outside person skilled in the area of programming the probe to do all the checks needed to make sure the truck frame doesn't fail inspections after it's removed from the machine.

 

Mike

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