Hole dimension setings
Hole dimension setings
(OP)
Is there a way to modify standard of dimesnions?
Change TRHU to THROUGH for example? Or DEPTH instead of depth "mark" which SW uses by default?
BR,
Linqur
Change TRHU to THROUGH for example? Or DEPTH instead of depth "mark" which SW uses by default?
BR,
Linqur






RE: Hole dimension setings
hope that helps
Regards,
Jon
jgbena@yahoo.com
RE: Hole dimension setings
or apply favourites to selected :( I am interested to change the standard so that it always comes as wished. The standards seem to be fixed? Also SW warns to brake parametric link when modifying dimesion text...
Linqur
RE: Hole dimension setings
BBJT CSWP
RE: Hole dimension setings
.250-28 UNJF-3A
instead of
1/4-28 UNF-3A
UNC and UNF are "inactive" for new designs after 31DEC91. They should be replaced by UNJC and UNJF, per MIL-S-8879.
You can also reference the standard thread callout as:
.250-28 (1/4-28) UNJF-3A... but why bother. My company still does things the "old" way... 1/4-28 UNF-3A. = )
"Happy the Hare at morning for she is ignorant to the Hunter's waking thoughts."
RE: Hole dimension setings
Would you have some workaround or
modify hole note (breaking feature link) or
enter SPR?
Linqur
RE: Hole dimension setings
"UNC and UNF are "inactive" for new designs after 31DEC91. They should be replaced by UNJC and UNJF, per MIL-S-8879."
Huh?
While the "J" thread form is the de facto aerospace "standard", UNF and UNC "Non-J" thread forms are alive and well, and not inactive for new design...
FYI, "J" and "non-J" threads should not be arbitrarily mixed, as it can result in interference at the thread root of the mating parts.
RE: Hole dimension setings
BBJT CSWP
RE: Hole dimension setings
BBJT, I would have to say that SW does not dimension per standard, and (I have, sw99+) you should submit an Enhancement Request. The term "taped hole" is not even close to ASME Y14.5M, also, the leader is attached at a strange place.
Linqur, an easy work around is just to modify the text of your dimensions after. There aren't realy any links between dimensioned threaded holes and the model, at least none that I have noticed. Once I remember trying to change a course thread callout to a fine thread. I changed the drawing, but the model did not update.
Since I am reminded of this, me thinks it's time I doth submit again...
"Happy the Hare at morning for she is ignorant to the Hunter's waking thoughts."
RE: Hole dimension setings
SW does not allow to modify [hole] dimension standard.
"Even" MDT allows that ;)
I think that modifying all notes by hand and breaking the associativity of feature to drawing is "low-range" of SW.
SPR...
Linqur
RE: Hole dimension setings
Sorry MadMango, didn't mean to imply that the "J" thread form was unique or exclusive to aerospace, just that it is more-or-less the accepted "standard" for fatigue critical applications (which means many, if not most, applications) in the aerospace industry. The desire to avoid potential assembly of mixed "UN" and UNJ" thread forms; potential misuse of a "non-J" thread in a fatigue critical application, and stocking issues, has undoubtedly further driven the nearly ubiquitous specification/use of the "J" thread form in aerospace even for non-fatigue critical applications.
MIL-S-8879 can be found at http://astimage.daps.dla.mil/docimages/0000\35\17\7373.PD5 . The document describes the modifications relative to the ANSI B1.1 "Non-J" thread form that comprise the thread "J" form (External Thread: An increased minor diameter with a mandatory, relatively large, dimensioned root radius tangent to the thread flanks; Internal Threads: Increased minor diameter to provided clearance to the modified external thread form). MIL-S-8879 only includes Class 3A and 3B threads.
RE: Hole dimension setings
Another question related to dimensioning. We use the ISO style dimensioning and the ordinate dimensions come with the "chain" turned on. Is there a way to have that turned off automatically? Or using API? I couldn't find a way to set it in the template.
Andrew