Programming a Total Runout on a Gear Surface

[[Jo...]]

Hi All,

Can anyone tell me how to program a total runout on a gear surface? What kind of feature should I use to get the best result and how should I evaluate it? Please see image from actual drawing.

Thanks in advance!

-Joe Barajas

[[Ch...]]

would be easier with Gear Pro, can also be done in Calypso. Do you have Gear Pro ?

method for Calypso to align gear : 

 

https://qualityforum.zeiss.com/migration/images/2500_fcdfcff2533342bd8f5c17a3d8f6a9b5.pptx 

Edited May 27

[[Jo...]]

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Hi Chris,

I don't believe I have Gear Pro. Is that part of the standard package, or is it a separate license? If it's a separate license, then I definitely don't have it.

[[No...]]

It's not just a seperate license, it's a seperate program.

[[Ch...]]

can be done without it just follow .ppt in link, make sure where you do your gear gap 'find' alignment, you also check tip dia at that height, otherwise on a helical gear, obviously you would end up falling off. give it a try, I've done it dozens of times in Calypso only works fine.

[[Jo...]]

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Okay great, thanks Chris! 

[[Jo...]]

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Hi Chris, 

Once I have the gear aligned, how would I program the total runout callout?

[[Ch...]]

if you have the cad model it helps, from your gear 'GAP' alignment, rotate 1/2 gear pitch, since yours appears to have 13 teeth, rotate 13.846° from the gap alignment at the same Z height as gap alignment. Program a point with proper vector (easier from CAD - also your CAD should have a gap or tooth aligned with X or Y). Rotational Pattern the point 13x , angle = 27.692° (360/13) . Recall points in to circle - report runout.  If you don't have rotary table suggest coming straight down with down probe. With the pattern, it should take care of clearance planes.

 

 Good luck !

[[Ri...]]

[[Ch...]]

Richard is correct, for total runout the entire OD surface should be included, and I have done this, but thought it might be a bit much for you.  I think there are a few ways to get the helical paths on the teeth, since he is showing a cylinder probably a helix path strategy.

A more common simpler  approach  might be to check top middle bottom of the OD. Keep in mind for this, due to it being a helical gear, you will either need to calculate the twist offset alignment, which is possible, but for a beginner I just suggest finding the gap in 3 places, top, middle, bottom.

Good luck !

[[Ch...]]

For a helical strategy I think it would be best to have the CAD aligned (e.g. gap aligned to X or Y), so you can make sure all traces will be on tooth tips, etc. 

 

Let us know how you make out !