Simple beginner project - faceplate dogs

Gallery, Projects and General > Project Logs

<< < (3/5) > >>

andyf:
Chuck,

I think bigmini's last photo reveals all. It shows how the threaded end sticks out of the hexagonal bolt head.

Andy

Lew_Merrick_PE:

--- Quote from: Chuck in E. TN on February 13, 2011, 08:42:03 AM ---Not to be a smart ass, but...
quote "The hole was drilled for a 5mm tapped hole and counterbored to 8mm."
I see how the dog bolts to the face plate, I'm asking if in the above quote, the hole is all the way through the hex part, as the pictures and the text don't indicate.
--- End quote ---

Chuck, The convention (since 1972) is for an un-depth-identified hole to be a "THRU" hole. Since 1982(-ish) we have a little "down-arrow" type character used to identify a "depth" dimension. Since 1994 we use it as: ø1.23 ("depth" down-arrow symbol) .45 to mean, "Drill ø1.23 to a depth of .45" (in units appropriate to the drawing). A hole identified as ø1.23 means, "Drill ø1.23 through the part."

These "conventions" are codified in both the ANSI and ISO engineering drawing specifications. The funny part of all this is how many "major engineering companies" do not understand or follow them. Those of us who use such things forget that it may not be clear to someone without our background. (I spent 12 years as a member of one of the committees writing and reviewing the ANSI engineering drawing specifications. Does it show?)

foozer:

--- Quote from: Lew_Merrick_PE on February 13, 2011, 11:32:45 AM ---
--- Quote from: Chuck in E. TN on February 13, 2011, 08:42:03 AM ---
T (I spent 12 years as a member of one of the committees writing and reviewing the ANSI engineering drawing specifications. Does it show?)

--- End quote ---

So your the guy! 20 years in the 325 slot 46 section Boeing, bad enough the section is upside and backwards, but the drawings, one has to hold up to a light and look from the back side to figure out what's going on. And the powers that be wonder why we were confused. :doh:
heh heh heh

Robert
--- End quote ---

bigmini:

--- Quote from: Chuck in E. TN on February 13, 2011, 08:42:03 AM ---Not to be a smart ass, but...
quote "The hole was drilled for a 5mm tapped hole and counterbored to 8mm."
I see how the dog bolts to the face plate, I'm asking if in the above quote, the hole is all the way through the hex part, as the pictures and the text don't indicate.

Chuck in E. TN

--- End quote ---

Sorry about that Chuck. The 5mm tapped hole does indeed go right through. The end of the small bolt is what does the clamping when you tighten it up. It should only project a very small amount from the hexagon to ensure that the clamp is stable.

Thanks to all for the encouraging responses.

saw:
This is a very good idea, thanks for showing us. :thumbup:

Navigation

 Message Index

Go to full version