[Cl...] Posted May 13, 2020 Share Posted May 13, 2020 This is a gage I've been asked to layout. The print is asking for the two vertical tabs to be within .0003 F.I.R to the center cylinder. This print was drawn in 1964 (I was 2 🙂 ). Do they mean bi-lateral position? BTW, I wrote T.I.R instead of F.I.R. TIR.pdf Link to comment https://qualityforum.zeiss.com/topic/15774-fir/ Share on other sites More sharing options...
[Ri...] Posted May 13, 2020 Share Posted May 13, 2020 I would interpret that as runout. Link to comment https://qualityforum.zeiss.com/topic/15774-fir/#findComment-86100 Share on other sites More sharing options...
[Cl...] Posted May 13, 2020 Author Share Posted May 13, 2020 Not knowing the function of the gage, I'm not sure what portion on the two tabs they want evaluated? I would bet they want the thin vertical inner walls of the tabs to be with in .0003 F.I.R. to the circle? Link to comment https://qualityforum.zeiss.com/topic/15774-fir/#findComment-86102 Share on other sites More sharing options...
[Da...] Posted May 13, 2020 Share Posted May 13, 2020 I would think the same thing Clarke It looks like the want the runout of the two surface to the center bore. That would make no more then .00015 off center? Link to comment https://qualityforum.zeiss.com/topic/15774-fir/#findComment-86104 Share on other sites More sharing options...
[Cl...] Posted May 13, 2020 Author Share Posted May 13, 2020 I was given a part to see what is actually checked with this gage. The part (a rifle bolt) has to fit between the thin tabs and over the center cylinder. Link to comment https://qualityforum.zeiss.com/topic/15774-fir/#findComment-86106 Share on other sites More sharing options...
[Ma...] Posted May 13, 2020 Share Posted May 13, 2020 May I ask what kind of rifle has a 1-1/2 inch diameter bolt? 😮 Link to comment https://qualityforum.zeiss.com/topic/15774-fir/#findComment-86108 Share on other sites More sharing options...
[Ri...] Posted May 14, 2020 Share Posted May 14, 2020 CIA NO! We are watching you! Link to comment https://qualityforum.zeiss.com/topic/15774-fir/#findComment-86110 Share on other sites More sharing options...
[Cl...] Posted May 14, 2020 Author Share Posted May 14, 2020 AR-15 Link to comment https://qualityforum.zeiss.com/topic/15774-fir/#findComment-86112 Share on other sites More sharing options...
[Cl...] Posted May 14, 2020 Author Share Posted May 14, 2020 Please sign in to view this quote. No, it's .5370" Link to comment https://qualityforum.zeiss.com/topic/15774-fir/#findComment-86114 Share on other sites More sharing options...
[Ma...] Posted May 14, 2020 Share Posted May 14, 2020 Whoops! Another example of why our European friends always put that "unneeded" zero to the left of the decimal point. 😉 Link to comment https://qualityforum.zeiss.com/topic/15774-fir/#findComment-86116 Share on other sites More sharing options...
[Cl...] Posted May 15, 2020 Author Share Posted May 15, 2020 We make this for an American company. Link to comment https://qualityforum.zeiss.com/topic/15774-fir/#findComment-86118 Share on other sites More sharing options...
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