+- MetalworkingFun Forum (http://www.metalworkingfun.com)
+-- Forum: Machinery (http://www.metalworkingfun.com/forum-10.html)
+--- Forum: Lathes (http://www.metalworkingfun.com/forum-11.html)
+---- Forum: Lathe Tooling (http://www.metalworkingfun.com/forum-19.html)
+---- Thread: Carriage Stop (/thread-1897.html)
Pages:
1
2
Carriage Stop - Hawkeye - 12-15-2013
I'm getting to know my 'new' Storebro lathe by making up some accessories that I find useful. A few times, I have been missing the carriage stop that I have on the Hercus lathe. I corrected that deficiency today. This design includes both a hard stop and a dial indicator to give advanced notice that the stop is coming up. With a bit of practice, you can drop out of power feed with about 5 thou left to turn by hand.
[attachment=7411]
I have it adjusted to zero out on the hard stop after 1/2" of contact. I'll replace the hex-head bolt when I can get a 2" SHCS.
[attachment=7412]
RE: Carriage Stop - Mayhem - 12-15-2013
Nice job Mike - you may want to get one of the handles that Ed used when he made his carriage stop.
I cannot recall the name of them but I will be using one when I try my second attempt at a carriage lock for my lathe.
RE: Carriage Stop - stevec - 12-15-2013
The hard stop looks a lot like a tap, if it is, is there any reason to use a tap?
RE: Carriage Stop - EdK - 12-15-2013
(12-15-2013, 06:31 AM)Mayhem Wrote: Nice job Mike - you may want to get one of the handles that Ed used when he made his carriage stop.
I cannot recall the name of them but I will be using one when I try my second attempt at a carriage lock for my lathe.
They're called adjustable handles. Here's some examples.
http://www.reidsupply.com/products/knobs-handles-hand-wheels/handles/adjustable-handles/
Reid Supply does ship to Canada if you can't find them locally.
Oh, and nice job on the carriage stop. It's a handy accessory to have.
Ed
RE: Carriage Stop - TomG - 12-15-2013
Mike,
Be careful power feeding to a hard stop. If you overshoot, you won't be able to disengage the feed (don't ask how I know). On some lathes can be a real pain to replace a shear pin.
Tom
RE: Carriage Stop - EdK - 12-15-2013
(12-15-2013, 11:08 AM)TomG Wrote: Mike,
Be careful power feeding to a hard stop. If you overshoot, you won't be able to disengage the feed (don't ask how I know). On some lathes can be a real pain to replace a shear pin.
Tom
And on lathes without a shear pin, like my lathe, I'm sure it's even a bigger pain to replace a gear or gears. And more expensive.
Ed
RE: Carriage Stop - awemawson - 12-15-2013
That's why I love my Colchester Master 2500. It has an auto knock off against a stop, and you can adjust the force required by twisting the feed lever. I tend to leave a bed clamp firmly fixed just short of the chuck in case I drift off at any time while turning
Andrew
RE: Carriage Stop - TomG - 12-15-2013
Andrew,
My Hardinge has an auto stop on the leadscrew. It will repeatedly stop with in couple of thousandths, which is great for threading to a shoulder. The feed has a friction clutch which will slip if it hits a hard stop.
Tom
RE: Carriage Stop - Hawkeye - 12-16-2013
That's why I use the dial indicator along with the hard stop. I get plenty of warning that the end is near. If I wanted to, i could set the dial for a full inch of warning. On the Hercus, the clutch will slip if it is allowed to hit the hard stop. I haven't tested the new machine. Half-nuts, of course, are a different story.
RE: Carriage Stop - stevec - 12-16-2013
Hmmm. still no word on the use of a tap as a hard stop???