Couple of questions on buttress thread.
1. Determine if wall thickness of steel tube (60 ksi) can withstand internal pressure of 4,500 ksi on a buttress thread, 0.5-20 BUTT-2? The max tube dia is 0.544 that can't be changed. I am stuck with thread major dia 0.5" because is the lowest specified...
Has anyone use it very well? You can easily get bad results, is heavily dependant on the constraints... So Please recommend a good training center/mentoring and more affordable than sigmetrix? it can do worst case and statistical tolerancing, in the latter it calculates the sensitivities of...
Folks
I am trying to find the max/min distance and I am not sure if this approach is the best one. Please doublecheck.. Lets assume the mating features are perpendicular so we can rule out any tilting and datum features dont need to be perpendicular, thats a new one..
Datum Shift, Line D...
Folks
We need to apply a static 1000lbs tensile load to a step bar but my concern is necking rupture. Material is Steel 4130. Is there a formula to estimate the optimum fillet radius to use? or whether a draft taper will work better? If not, a FEA software like Creo structure will work as well??
Folks
I am reading Alex Krulikowski workbook, Exercise 5-51 and there is a mistake on Line J, datum shift. It should be 0.2;
VC=10.3-0.2=10.1
MMC-VC= 10.3-10.1=0.2
What do you think? I get annoyed when he mentions that for assembly stacks, it requires two different stacks where the...
I came across IB/OB boundary method for calculating stacks. See image. It looks simple but i just not getting the right answer when it comes to the axis perpendicularity control. The problem might be the bonus tolerance which i neglect because i thought it doesnt get one. Please explain what i...
Folks
I am confused about datum shift. In the counterbore stack, we see them bilateral in Line D & P. But in the other stack, they are bilateral unequal, Line E. Is 0.1/.005 come from the perpendicularity control. Also, Where Line F, G, Line J, K come from. The position tol has been accounted...
After reading several threads, flatness doesnt count on stacks unless leakage is of concern. Alex K. workbook does count it, see attached. The second stack shows a flatness 0.6 which makes me more confused. In my case, i am looking for the gap on top of the assembly far away from the flatness...
Has anyone used statistics formula (using MatLab) to come up with a number of combinations you can have for a specific tolerance stackup? with tolerances, w/wo gd&t, w/wo M modifier, w/wo L modifiers, etc. Say the gap constraints are given, thus calculate the missing dimension. pretty...
Please
To those who own this software. Is this software integrated in Siemens PLM NX package? or is a separate license to pay for? If so, can it be used on other CAD programs like Creo.
thanks
Folks
I always had trouble interpreting a cut vs protrusion. In Figure 1, the step feature has a dimension 0.296 -0.005". Wouldn't this cut read 0.296+0.005". The same for Figure 2. It boils down how is machined. Does anyone have a references to read? any tips...
Guys
I need to fill the inside of a shell with a solid. Please look at the attached assembly(19203_9205471-1, instance of 19203_9205471) which consists of two bags (9205470-1) plus the fill (9205471-1_mil-p-603218). Its such a nuisance to create a curve, then a surface, then merge, then...
How would you cut those two indents (vshape) along the wall?
I am not sure if a sweep profile along the wall will do because the wall has different angles unless I sweep along a curve. Is that a Vshape cut? doesnt look like from the top
How do I create a cosmetic thread on half a cylinder?
I have a 1/2 of sleeve/disk modeled and when i add the cosmetic thread, it will revolve 360 degrees around instead of the 180 deg. I tried cutting it with an extrusion and it wont go away. Eventually i need to add a rectangular plate on the...
