Attribute Gage Certification

J

JaySturgeon

Some input requested please.

I have a number of attribute checking fixtures that were recieved from a previous supplier of the parts they check. These fixtures are now coming due for calibration. I have requested any of the following from the customer to no avail. A print, CAD Data and/or math data. They can not find the prints. Do not claim to have CAD or math data and have no idea how the previous supplier (who I do not know who that was) certified the gages.

My current plan is to lay the gages out on a CMM, affixing our own "0" points, qualifying location points to various check points. Qualifying any fixed Go/NoGo Feeler type pins. Creating a Master Certification sample from a current part and rechecking to those items again annually.

Basically: Here is where the gage is today. The parts that it qualifies as good parts have never been rejected due to the gage and or dimensional issue.

Are there any other ideas out that I might explore.
Appreciate your input.

:D
 
A

Al Dyer

Jay,

You are on the right track. You have requested customer help but not received any.

You are doing the best thing possible, you are verifying your attribute gages with a calibrated CMM. Don't forget to use certified gage blocks when the situation warrants.

Keep up the good work!

Al...
 
N

noboxwine

Go Get 'em Jay & Al. This is a great way to maintain the integruity of your product & system. Well done !:D
 
L

LMO

Quality
Thats what I would do, verify the gages with the CMM to print dimensions for that component.

Where your site lines are at, put a set on each side a color code for the operator.

Document your requests to your customer for CAD and other and document thier reply. Put those documents in the gage file. In case an auditor would ask about their calibration.

If you don' t have the history, then you have to make just like you are doing.

Reverse engineering!

Excellent keep it up.

However, why were the gages not verified when they were received. Should not have waited until this calibration.
 
J

JaySturgeon

LMO

Actually, the gages were here before I was. I can't answer your question except to say my predecessor did not take care of this.

Thanks to all for the input!!!!!!!!!!


:bigwave:

Jay Sturgeon



"Do it right the first time." (Saves a lot of work later ya no!)
 
J

JaySturgeon

THANKS

I WOULD LIKE TO THANK EVERYONE FOR THEIR INPUT ON THIS SUBJECT! IT IS GREATLY APPRECIATED!

Jay Sturgeon
 
J

JaySturgeon

Second Question Regarding Tolerancing

Let me pose one more question here. What about tolerancing. What I thought we would do is run the CMM program, once written, about five times back to back. Take the results (variation) and divide by five. I would then give a plus/minus tolerance from that. After two runs or variation would give us a tolerance of ± .0005.

What do you think.


Jay Sturgeon
 
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