functional quota

[Kawa46]

Good evening to all,
I have to solve an exercise that asks me to calculate the game g1 in figureI wanted to know if the procedure I adopted is correct.
I basically identified the quotas to,b,c,d which are seen in pencil and found g1 as a difference of these.
the values were a=425 +/- 0.3; b=85 +0.025 -0.4; c= 300 +/-0.2; d=25 +/-0.1
for c d the tolerances are taken from the 2768 fine degree, for b I took the data from theskf on the thickness.
so doing comes a 15 mm game with width of the tolerance area of 1.625.
is it correct?
Thank you.

 

[Kawa46]

no one who can do this exercise?

 

[meccanicamg]

I don't think we need a particular study to understand this concept, but I try to explain it because it's really simple.

if you have a "mask" that must enter a "female" consider tolerances as their minimum and maximum values, so that you have a true value by forgetting the tolerances of itself.
therefore the larger share must contain the smaller ones, so there will be a difference. to have the maximum game, then the maximum delta you need to take the female + wide with the smaller male and to have the minimum game you take the female closer with the wider male.

I'll work you outthe theory is the same that is used for couplings with game, interference or uncertain. always draws the rectangle with values if you can't make this reasoning fly and you will see that it will be simple