【转帖】use of x by

yang686526

use of x by
when using basic dimensions, is the referenced dimension still box. ie 5x [5.00] = ( [15.00] ).
jjrobert,
   asme y14.5m-1994 shows the quantity inside the basic dimension box on all the figures i just examined.  if you are using solidworks, the quantity will wind up outside the basic box.  i can still see that the dimension is basic.
   anything inside brackets, as per figure 1-54 is a reference dimension, and should not be boxed.  your [5.00] above is your real dimension.  your calculation of the total is a perfect illustration of why the figure in brackets is for reference only.  
   i screw up too sometimes.  
                        jhg
i agree with drawoh, except i would have referred to them as parenthesis, since you used brackets to denote basic dimensions.
the form you are asking about is generally used to denote non-cumulative dimensions, and basic dimensions are non-cumulative by default, so all you really need is 5x [5.00] or [5x 5.00] (either of which is permissable per the standard , para 1.9.5).
if you do use that form, the = should also be in the parenthesis.
the edge... there is no honest way to explain it because the only people who really know where it is are the ones who have gone over.fff"> - hunter s. thompson

as drawoh says, 14.5 seems to show the x in the basic box.  
however, there is nothing in there i'm aware of that says having out of the box is explicitly wrong so i will allow it on drawings i check.
in our cad system you have to dig down into the settings to get it to be in the box but i've now set our default settings to be that way.
as regards your example, i agree with drawoh that i don't believe the 15 should be boxed.
kenat,
well spotted ewh
quote (asme y14.5m-1994):
1.9.5 repetative features or dimensionsfff"> ...where used with a basic dimension, the x may be placed either inside or outside the basic dimension frame.  see figs 4-26 and 5-14.
so i was a little off track.
kenat,
ewh,
   okay, parentheses it is.  
                      jhg
drawoh, back in the uk they were called brackets, square, round or curly.  my first checker in the us used to pick on me calling them brackets.
kenat,
i guess "round brackets" would be acceptable
the edge... there is no honest way to explain it because the only people who really know where it is are the ones who have gone over.fff"> - hunter s. thompson

to make sure i am getting this correct, which is correct the top or the bottom dimenions
they are both wrong for different reasons.  
the bottom one is i believe more correct but it should be x not x.  also, while not explicitly stated as far as i can see, the figures show the = in the parenthesis.
5x [1.000](=5.000)
kenat,
kenat,
you are correct that x is uppercase:
5x [1.000].
but, here in the us, [] is usually meant to be the secondary units, () is meant as reference dim's.
chris
solidworks/pdmworks 08 3.1
autocad 08