I have a Clausing 5914 that will drill holes quickly for the first 1/2"
of ram travel out of the tailstock, but after than it is slow going as
the drill rides up higher.

What can be done?
I can imagine boring out the tail stock and pounding a sleeve on the ram.
TIA

--
Be careful what you pray for, it can happen.

Clark Magnuson wrote:
I have a Clausing 5914 that will drill holes quickly for the first 1/2"
of ram travel out of the tailstock, but after than it is slow going as
the drill rides up higher.

What can be done?
I can imagine boring out the tail stock and pounding a sleeve on the ram.
TIA


More diagnostics are indicated. I suggest you mount a DTI on a shaft in
the headstock and use it to indicate the ram first slightly extended and
then extended about an inch. Or disassemble your tailstock and carefully
indicate your ram on a surface plate to see if it is still cylindrical.
It could be a chip caught up somewhere, don't freak out yet. - GWE

Thanks for the response.


Before you start turning sleeves, you should determine what the problem is.
Often the leading edge of the base has worn so the tailstock drops.


I have the upper half shimmed up from the bottom half adjust for wear on
the base.

That
seems to be opposite from what you describe, though. Might be a good
idea to extend the quill and do some checking before you touch it.


You are right. The up and down and side to side movement is only .007",
3" from the ram's orifice, with about 10 pounds of force.

Otherwise you could end up with the same problem after an attempted repair,
having solved nothing.







--
Be careful what you pray for, it can happen.

"Clark Magnuson" wrote in message
...

snip---

You are right. The up and down and side to side movement is only .007", 3"
from the ram's orifice, with about 10 pounds of force.


After giving this more thought, I came to realize that you likely have
considerable wear-----which would not be restricted to the quill alone. I
can't help but think that you may have to bore the tailstock housing to
re-establish a round and straight bore before attempting any kind of repair.
Otherwise you'd improve the condition, but not eliminate it.

If you choose to do the upgrade, you might consider making the quill from
Stressproof, unless you have access to heat treat and grinding.

Harold

Clark Magnuson wrote:
I have a Clausing 5914 that will drill holes quickly for the first 1/2"
of ram travel out of the tailstock, but after than it is slow going as
the drill rides up higher.

What can be done?
I can imagine boring out the tail stock and pounding a sleeve on the ram.
TIA


Well, you take $330.00......


Figure out what's worn. If it's the housing, bore housing & shrink a
sleeve into the housing. If it's the ram only, have metal sprayed only
it and turn back to size. If you were lucky, wear would be limited to
the end away from the taper and graduations. If so, you could cut it
undersize and shrink a sleeve over it.
If both pieces are worn, I think I'd look for a replacement with
fewer miles on it.

In article , Rex B says...

What can be done?
....
Well, you take $330.00......

Hee hee....

Jim


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