huangyhg

missing illustration in the 2008 standard
in section 1, general dimensioning, of the 2008 standard, the figure of slotted hole is missing. does anyone know why?
check out our whitepaper library.
which 2008 standard?
chris
solidworks 08 0.0/pdmworks 08
autocad 06
yeh gary. i think you have access to something we don't,
an advanced copy asme y14.5m-2008?
ron
i'm sorry, i was assuming (one should never assume)that most
last i heard (read), there was a version being worked on. i didn't know it was going to be called 2008.
chris
solidworks 08 0.0/pdmworks 08
autocad 06
look at appendix a. bottom of page 223.
marcelino vigil
gdtp t-0377
thanks vigildesign - for those who do not have a copy of the y14.5 draft, the illustration 1-35 in the present standard has been removed from the 2008 draft. this is ok, we will still have figure 1-27, 1-28, and 5-47 shown in the present standard for dimensioning sloted shaped features. what we will not have is dimensioning to the center of the slot with a ± tolerance for punching sheetmetal.
interesting, just a few weeks ago i was looking at these illustrations trying to decide if the standard contradicted itself between para 1.8.4 & figure 1-35a.
kenat, probably the least qualified checker you'll ever meet...
kenat:
you just addressed what i think is one of the anomolies of the standard. why talk about fully rounded ends when it duplicates the slot callout of fig.1-35? personally i champion use of fig. 1-35(c) (and fig 1-27) as the best way to dimension slots for end product and inspection. fig. 1-35(a) is basically "in-process", and should only show up on manufacturing planning and routings.
i know i'll get disagreement on that one.
whitmiregt is right in that fig 1-35(b) is centered to accomodate slot punching, and should be kept for that reason. off thread topic, i know.
ron, that's pretty much my thinking, except i'd say why have a section talking about slotted holes when it just duplicates what you've said about generic round end features, or am i missing something?.
i think 1.8.4 covers it and matches figures 1-27, 1-35b & 1-35c. fig 1-35a doesn't match para 1.8.4.
to me, based on what it says at 1.4 then when there appears to be a conflict between a figure and the text, i go with the text, so i discourage schemes like 1-35a.
our of interest in the draft does the equivalent of 1.8.10 just refer to 1-27 or is there no illustration or is the whole para removed?
kenat, probably the least qualified checker you'll ever meet...
the 2008 y14.5 draft is screw up on the subject of slots.
figure 1.8.10 is replaced by 1.8.4 rounded end and slotted
holes states: ..."using one of the methods shown in fig. 1-29..." figure 29 has only one example (was 1-27). figure 1-29 should have been the same as 1-35 in the y14.5-1994 standard. the bottom line is the text and figures are all mixed up.

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