Re: Mori Seki SL1 NC lathe programming



Cliff wrote:

On Mon, 01 May 2006 21:20:39 GMT, BottleBob <bottlbob@xxxxxxxxxxxxx> wrote:


AFAIK All CAD/CAM systems use the XY CAD plane for simple
lathe work & the posts just use the proper word addresses in
their output.

Well let me correct your misconception then. Gibbs lathe geometry
creation and toolpath programming is done in the X,Z coordinate system.
And a quick look at an old MasterCam textbook says to create lathe
geometry in the X,Z coordinate system. So much for your *ALL*. Just
how long has it been since you "programmed" a lathe, 1, 2, 3, decades?

Sounds like rubbish to me.

Cliff:

Who cares what it "sounds" like to you. I'm just relaying the facts as
they are.
It seems like JB was correct in one thing, you seem to be out of touch
with modern CAD/CAM systems.


LOL Do you STILL maintain that when when larger than nominal
diameter stock is put in a collet, bushing, or bored jaws that ARE
nominal size,
that the slits/edges would be farthest away from the stock like in your
original following comment:
"Those edges would be farthest AWAY from the stock <G>."

If it fits the nominal diameter or is smaller, yep.

We're not talking nominal diameter or smaller, we're talking slightly
larger.

Not good on bushings <G>.

Irrelevant to the discussion.


If you have to open things up or bang things about ....

Excuse me? You've never used a variety of collets? FYI, some
collets have a lot of spring to them and when unrestrained easily open
larger than the nominal ID.

You think doing such is always a good idea?

ALWAYS? Few things are ALWAYS a good idea. This Cliffasion is also
irrelevant to the discussion.


Not without lots of force to spring things ... <g>.

Yes, often without lots of force to spring things. We're only talking
a few thousandths per side here.

Why not just use milionths?

Did you mean millionths? How many do you want, is 2,000 millionths per
side enough?


Answer the simple question:

And just where do you think .005 over nominal stock would
contact the collet/bushing first, the slits or the area between the
slits?

When the ID > OD on the edges as, IIRC, I stated some time back <G>.

So you're NOW contradicting what you originally wrote? Is this an
official retraction? Here are the original comments again for your
edification:

BB wrote:

"If the bar is larger than the ID of the guide bushing the bushing
would
probably contact the bar only at the edges of the splits."

Cliff replied:
Oops .... Geometry issues again.
Those edges would be farthest AWAY from the stock <G>.


--
BottleBob
http://home.earthlink.net/~bottlbob
.

Relevant Pages

  • Re: Mori Seki SL1 NC lathe programming
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