I need some suggestions for references on Boring.

PS. Not the bored with life books. No ennui here...

"Louis Ohland" wrote in message
...
I need some suggestions for references on Boring.

PS. Not the bored with life books. No ennui here...

How about starting with the chamber of commerce?
http://www.getfave.com/locations/or/...er-of-commerce
[bseg]
Art

On Jun 13, 12:55*pm, Louis Ohland wrote:
* *I need some suggestions for references on Boring.

PS. Not the bored with life books. No ennui here...

Lathe or mill?

Really, either one is simple if you already have a feel for feeds and
speeds.

jsw

Louis Ohland wrote:

I need some suggestions for references on Boring.

PS. Not the bored with life books. No ennui here...

Well, I can't tell you a lot but if your bar sticks out more than 4L to 1d with steel, you
risk chatter.

Carbide takes you farther down the road since it is stiffer. Can't remember the ratio
atm.


Wes

--
"Additionally as a security officer, I carry a gun to protect
government officials but my life isn't worth protecting at home
in their eyes." Dick Anthony Heller

Louis Ohland wrote:

I need some suggestions for references on Boring.

PS. Not the bored with life books. No ennui here...

Make sure your cutting tool/insert is aligned on centerline.

Wes
--
"Additionally as a security officer, I carry a gun to protect
government officials but my life isn't worth protecting at home
in their eyes." Dick Anthony Heller

On Jun 13, 5:46*pm, Wes wrote:
Louis Ohland wrote:
* I need some suggestions for references on Boring.

PS. Not the bored with life books. No ennui here...

Make sure *your cutting tool/insert is aligned on centerline.

Wes
--
"Additionally as a security officer, I carry a gun to protect
government officials but my life isn't worth protecting at home
in their eyes." *Dick Anthony Heller


Make sure the cutting tool has sufficient front clearance so as not to
rub on the inside wall.

Set the cutting edge at or slightly above the centre line of the
lathe.

If you get serious vibration slow the speed and/or increase the feed/
rev.

Point 1) and 3) also apply when using a boring head in the mill.

Keep the bar extension as short as possible.

Wolfgang

wolfgang wrote:

If you get serious vibration slow the speed and/or increase the feed/
rev.

Another good tip. We were trying to run jobs with 1.5d" boring bars when 2" can be
marginal using round turrets where the tool holder adds to the overhang. Thankfully we
now have more machines that take 2"d side mounted in decent holders and don't have the
problem.

Wes
--
"Additionally as a security officer, I carry a gun to protect
government officials but my life isn't worth protecting at home
in their eyes." Dick Anthony Heller

Louis Ohland writes:

I need some suggestions for references on Boring.

The world is ruled by those who could bore straight holes in guns, big and
little.

Get a copy of Kibbe:

http://search.ebay.com/machine+tool+practices
http://www.truetex.com/metalref.htm

Wes wrote:
Louis Ohland wrote:

I need some suggestions for references on Boring.

PS. Not the bored with life books. No ennui here...

Make sure your cutting tool/insert is aligned on centerline.

Does this apply to all boring bars? I found one (carbide insert) with a
negative rake. This puzzled me and some research on the net suggested that
it should be used below the center. Is this wrong?

I am happy to photograph it an post on flickr if it helps.

--
Michael Koblic
Campbell River, BC

On Jun 14, 2:18*am, "Michael Koblic" wrote:

Make sure *your cutting tool/insert is aligned on centerline.

Does this apply to all boring bars? I found one (carbide insert) with a
negative rake. This puzzled me and some research on the net suggested that
it should be used below the center. Is this wrong?


Michael Koblic
Campbell River, BC

When you are turning a outside diameter in the lathe , you want the
tool on the centerline of the part or very slightly below centerline.
The reason is that if the tool digs in, it is deflected down which
moves it away from the cut. If it is above center, when it digs in ,
it is deflected down and into the cut. Which makes it dig in more.

When boring everything is exactly reversed. The tool should be on
centerline or slightly above centerline. If it is below centerline,
if it digs in, it will move down and dig in more. I prefer slightly
above centerline. Because boring bars are more flexible than tool
used for outside turning. So they are very likely to deflect and if
above centerline they will not dig in more. That is true whether the
rake is positive or negative.

Dan

On Sat, 13 Jun 2009 11:55:58 -0500, Louis Ohland wrote:

I need some suggestions for references on Boring.

PS. Not the bored with life books. No ennui here...

It's a town (officially a "village" within the city of Damascus) in
Oregon, USA. It used to be a lumber and mill town. Now it's a bend in
the road, surrounded by bedrooms that feed into Portland and a whole
bunch of nice farmland.

It was founded by a very Boring family.

--
http://www.wescottdesign.com

wrote in message
...
On Jun 14, 2:18 am, "Michael Koblic" wrote:

Make sure your cutting tool/insert is aligned on centerline.

Does this apply to all boring bars? I found one (carbide insert) with a
negative rake. This puzzled me and some research on the net suggested that
it should be used below the center. Is this wrong?


Michael Koblic
Campbell River, BC

When you are turning a outside diameter in the lathe , you want the
tool on the centerline of the part or very slightly below centerline.
The reason is that if the tool digs in, it is deflected down which
moves it away from the cut. If it is above center, when it digs in ,
it is deflected down and into the cut. Which makes it dig in more.

When boring everything is exactly reversed. The tool should be on
centerline or slightly above centerline. If it is below centerline,
if it digs in, it will move down and dig in more. I prefer slightly
above centerline. Because boring bars are more flexible than tool
used for outside turning. So they are very likely to deflect and if
above centerline they will not dig in more. That is true whether the
rake is positive or negative.

Dan
While that's of some concern, the biggest one is that boring requires
considerable relief, especially on small holes, where the radius of the part
is quite small. Running below center often yields dragging of the tool on
the front relief, which isn't acceptable.

Harold

On Jun 13, 10:35*pm, Tim Wescott wrote:


It's a town (officially a "village" within the city of Damascus) in
Oregon, USA. *It used to be a lumber and mill town. *Now it's a bend in
the road, surrounded by bedrooms that feed into Portland and a whole
bunch of nice farmland.

It was founded by a very Boring family.

--http://www.wescottdesign.com

Were they related to the Boeings, Boers or Bongs?

Strange things happened to names at Ellis Island. Yeager was Jaeger
(hunter, gamekeeper), and I think Chrysler was Kreisler. Cronkite was
originally Krankheit (sickness).

jsw

At one time the UK commercial phone directory used to say

"Boring: see Civil Engineers"

newshound wrote:

At one time the UK commercial phone directory used to say

"Boring: see Civil Engineers"


There are no 'Civil' engineers. ;-)


--
You can't have a sense of humor, if you have no sense!

rangerssuck writes:

I'm still drinking seltzer - the 20# CO2 tank is, apparently, bottomless

Or about 1000 liters of seltzer, whichever comes first.

http://www.truetex.com/carbonation.htm

On Tue, 23 Jun 2009 23:24:46 -0500, Richard J Kinch
wrote:

rangerssuck writes:

I'm still drinking seltzer - the 20# CO2 tank is, apparently, bottomless

Or about 1000 liters of seltzer, whichever comes first.

http://www.truetex.com/carbonation.htm

It's in there as a liquid, lotsa packaging density. I used it all
the time for unclogging AC condensate lines and air dusting, and the
tank lasted for months.

Which is why it's great for powering "air" operated things in
remote places without electric power and you don't want to change gas
bottles very often - if the systems are compatible with it.

Now they sell little 2-pound portable bottles with a carrier and all
the accessories, and a Transfill adapter to fill it from a 20-pounder.

-- Bruce --