I will try to be more specific, I have a callout of a T.P. of .012 to A @ MMC. Since the datum feature symbol is inline with the dimension, the "A" datum is the center of the 1.500 regardless of its size. Now that the 1.500 has a +/-.005 tolerance, if its actually 1.500, .005 under the O.D. max...
Thanks pmark,
I understand your concern with respect to the center of the hole having a larger condition. We also use our Zeiss cmm to verify that condition, however at the machine our method available is with the Deltronic pins. The method some of my collegues are suggesting, by using a .1247...
When gaging critical holes, using go/nogo gages, what is the correct method? We have a hole callout of .1250/.1248. we are using deltronic gage pins. My interpretation is that the .1248 pin must go, and that the .1250 cannot go. I have some people saying that the .1247 can go (meaning that the...
I agree...The A datum has its coplanarity callout of .00005 and side opposite A has the profile of .0005 to A, This I know would call the side opposite of A to be coplaner to itself of .0005, plus parallelism of .0005 to A. Since the .280 is not basic, I am not held to a bilateral location of...
See attachement...In this case its the .280 which is +/- .010 http://files.engineering.com/getfile.aspx?folder=00161350-ef74-4c95-a0ff-9ffa0b259a01&file=Capture.PNG
We have a callout on a customers drawing as follows;
Profile of .0005 to A.....There is a non basic dimension from A of .300
I see this as Parallelism to A, since the .300 is not basic. Am I correct with this definition.
I have a hole callout of .097 dia. with a .002 tp at mmc. Since there is no specific tolerance on the hole size, is it standard practice to use the +/-.005 tolerance in the tolerance block for the drawing? My understanding was that on holes with no tolerance specified fell under some sort of...
