??? ??? your doing fine Leo
??? ??? animal
On 4/12/2021 10:54 AM, Leo Kuipers
wrote:
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Hi
Ralph,
?
I also did have many problems with parting on
my ATLAS 10200 lathe, after repairing a warped cross slide
guiding, replacing the plastic gibs by brass ones, it got
the tool in a useful state.
The tool on the picture is what I used. ?
But also it¡¯s crucial to have the parting tool
exactly at center height and the angle between parting tool
and the part must be between 0 -1 degree.
?
In the old day the parting tool was placed
upside down behind the spindle while the lathe was running
reverse direction. This mainly was in use the overcome bad
bearings of the main axis. (And maybe more)
?
Sorry if I once in a while mess up the English
language.
?
Best regards,
Leo
?
From: [email protected]
[mailto:[email protected]] On Behalf Of Ralph
Hulslander
Sent: maandag 12 april 2021 17:24
To: [email protected]
Subject: Re: [digitalhobbyist] Constant Surface Speed
#CSS #LATHES #MODS
?
I have smashed a couple of carbide
parting tools, so I stick with HSS for the time being.
?
These are a nice
tool to use, 2 bites of the?cherry?carbide insert
and double ended.
I use HSS
parting tools thinned down for "o" ring grooves,
that?s about?all nowadays.
I have used my
insert parting tool for over 3 1/2 years. Expensive
to initially buy, but a very reliable tool.
With a good
coolant flow, mainly to wash the chips out of the
groove, a 2" dia steel parting off is a dream.?
Even more easier
since I removed my compound slide and made into a
boat anchor. LOL. my tool post?is fixed directly
to a riser block
that bolts to the cross slide.?
Thanks RELS, I
have no more "compound slide" blues.?
?
I was going to ask about using
CSS while parting? So far I can part Delrin
(plastic) and aluminium nicely
but have never successfully
parted steel. So if CSS would help I'll move it up
on the list.
?
On Mon, Apr 12, 2021 at 08:50
AM, Robert Francis wrote:
HOW FOR HUNDREDS OF YEARS<
HAVE MACHINISTS MANAGED TO PART ITEMS IN A
LATHE????? Answer SKILL!!
Robert,
Absolutely true!
When at a Renaissance Fair in Germany some years
ago, I watch an artisan make wooded chess pieces
on a lathe powered by a sapling. The tree was bent
over and rope ran from the tree around the spindle
multiple times, and was the anchored to a foot
pedal. Pressing on the foot pedal would turn the
spindle and the artisan would take cuts, and then
withdraw his tool when the pedal was released and
the spindle spun in reverse. This was certainly a
skilled individual. But I doubt that woodworkers
worldwide would like to surrender their electric
motors and plant saplings in their shops!
The CSS is just one more tool.?(Although I view
CSS more as a tool for creating larger diameter
faced surfaces without "vinyl record grooves"
rather than for parting.) It just increases the
RPM to keep surface speed constant as the tool is
advanced in the X-axis. It does not require that
the lathe be otherwise automated. Like all such
tools, it does NOT replace skill! Good point!
?
--
Regards,
Charlie
New Jersey, USA
SATTINGER¡¯S
LAW: It works better if you plug it in.
EDWARD'S LAW: It works even better if you
turn it on.
--
Clausing 8520, Craftsman 12x36 Lathe, 4x12 mini lathe,
14" Delta drill press, 40 watt laser, Consew brushless
DC motors and a non working 3D printer
--
John
--
Clausing 8520, Craftsman 12x36 Lathe, 4x12 mini lathe, 14"
Delta drill press, 40 watt laser, Consew brushless DC motors
and a non working 3D printer
