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functional gage

functional gage

functional gage

(OP)
Thanks pmarc & drawoh,you both are very much right, but i have my drawing in that shape so i want to have  Gage for that,without having any engineering change,can any body suggest ,how it will look like.  

RE: functional gage

rupeshpahwa,

   Ctopher is right.  You should have continued the previous thread.

   If you want to gauge this thing, then you really should use a profile tolerance on the hex.  This will give you a well defined MMC state that you can test with a hexagonal, female GO gauge.  Your NOGO gauge will be a fork, .3129" wide that must not fit over any of the three flats.

   Your drawing controls width and angle separately.  You can make a GO gauge fork to test each flat separately.  

   I figure that based on your positional tolerance of .010", and your across flats dimension of .315", you have a total angular tolerance of 3.6°.  You should be able to figure out how to interpret a 120° comparator gauge.  Accounting for the MMC state requires you to measure across flats with micrometer.

   A well prepared drawing will save you all sorts of inspection time.

               JHG

RE: functional gage

rupeshpahwa,

   Your inspection gauge, as shown, will not work.  You have a larger diameter between your reference diameter and your flats gauge.  The piece that measures across your flats may have to be attached separately through dowel pins.   

               JHG

RE: functional gage

(OP)
I am thinking to make the .38 at mmc & check the accross flats .315  with respect to that.

thanks

rupesh  

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