Greetings everybody;

As I read the machinists hand book, tapers such as this mean 
the "included" angle, not the angle of just one side of a cone.

So, I've read, where I don't recall, that a taper lock hub is 7 degrees 
of taper. It doesn't self eject, but also does not need a lot of jacking 
force to unlock it.  Or is that magic angle different, not 7 degrees?

The sin(7)=0.121869343405147462, which I interpret as meaning if the tool 
travels an inch, the diameter change is 0.121869343405147462.

But the tool is moving only .735" from one end of the taper to the other, 
so the additive value for the big end of the taper is 
then .735*0.121869343405147462=0.0895739674027833847.  Since that is 
better than angstrom accuracy, round it down to 4 or 5 digits right of 
the decimal makes sense since I'm not carving a new Hubble mirror here.

So, bore is .876" (I overshot 7/8" a red one)
and I'd like the taper hub wall to be about 1/16" thick at the small 
end=1.0000". Then the diameter at the flange, .735" to the left of that 
1" point, would 1.08957".

Correct?

Thanks. I might get this taper thing understood yet.

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>

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