通用GDAT培训教材

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通用GDAT培训教材Non-Gravity Biased
Definition: PartShiftdue tothe positioning of the part/assemblyon the tooling pins/fasteners
where there isthe equal likelihood that the positioning ofthe partcan be anywhere
within the allowable floatzone
The distribution type forthisfloatcalculation will be normal
Application: Calculated fromthe Largesthole minusthe smallestpin
I.E Hole10.1 0.1/0
Pin 0.4 undernominal (Based on programtooling Reqts)
Calculation: 10.2-9.7 0.5 or/-0.25 float
GravityBiased
Definition: PartShiftdue tothe positioning of the part/Assemblyon the tooling pins/fasteners
wheregravitywillshift theparttotallyto one side ofthe tooling/attachmentfeature.
Application: Applied atthe end ofthe study asa mean shift(See example)
I.E Hole10.1 0.1/0
Pin 0.4 undernominal (Based on programtooling Reqts)
Calculation: 10.2-9.7 0.5
Nominal Shift0.5/2 or0.25
Note: DSEtodetermineshift direction based on application
Note: All pin floatsare tobe calculated fromthe processutilizing the smallestpins
I.EWeld toolstypicallyutilize smallerpinsthan gagestominimizeoreliminate
part bindinginthewelders.You should be calculating yourfloatsbased on
thesepinsizes.