Is there anybody tell me about the roll forming?

"Inho Sung" wrote in message
...
Is there anybody tell me about the roll forming?



In reference to grinding wheels?

H

Nah, I think he wants the cooking/baking forum.G
Bugs

"Harold and Susan Vordos" wrote in message
...

"Inho Sung" wrote in message
...
Is there anybody tell me about the roll forming?



In reference to grinding wheels?


Harold,

My experience concerning roll forming has been making tubes out of sheet.
What does it refer to in the grinding world?

Regards,

Robin

"Robin S." wrote in message
.. .

"Harold and Susan Vordos" wrote in message
...

"Inho Sung" wrote in message
...
Is there anybody tell me about the roll forming?



In reference to grinding wheels?


Harold,

My experience concerning roll forming has been making tubes out of sheet.
What does it refer to in the grinding world?

Regards,

Robin

Crush roll forming is a method of shaping (dressing) a grinding wheel. The
desired (circular) form is slowly driven and pressed against the wheel of
the machine. The form drives the grinding wheel and slowly crushes the
wheel until the profile has been generated in the grinding wheel. It's not
something I've experienced, but I'm aware of its existence. Difficult
forms can be so dressed into wheels when other methods are not available.
Can't help but think that in today's world, it would be done differently,
but it was, apparently, commonly done before CNC.

Harold

"Harold and Susan Vordos" wrote in message
...

Crush roll forming is a method of shaping (dressing) a grinding wheel.
The
desired (circular) form is slowly driven and pressed against the wheel of
the machine. The form drives the grinding wheel and slowly crushes the
wheel until the profile has been generated in the grinding wheel. It's
not
something I've experienced, but I'm aware of its existence. Difficult
forms can be so dressed into wheels when other methods are not available.
Can't help but think that in today's world, it would be done differently,
but it was, apparently, commonly done before CNC.

Harold,

Interesting info.

I looked it up a bit, and came up with this: http://www.drkaiser.de/en It
looks like the same idea with diamond instead of HSS or carbide (which, I
read, were the common materials for crush roll form dressing).

Regards,

Robin

"Robin S." wrote in message
.. .

"Harold and Susan Vordos" wrote in message
...

Crush roll forming is a method of shaping (dressing) a grinding wheel.
The
desired (circular) form is slowly driven and pressed against the wheel
of
the machine. The form drives the grinding wheel and slowly crushes the
wheel until the profile has been generated in the grinding wheel. It's
not
something I've experienced, but I'm aware of its existence. Difficult
forms can be so dressed into wheels when other methods are not
available.
Can't help but think that in today's world, it would be done
differently,
but it was, apparently, commonly done before CNC.

Harold,

Interesting info.

I looked it up a bit, and came up with this: http://www.drkaiser.de/en It
looks like the same idea with diamond instead of HSS or carbide (which, I
read, were the common materials for crush roll form dressing).

Regards,

Robin


Shocking revalation! Thanks for the link, which I found interesting. I
figured things had changed, but could't imagine to such a degree.

Harold

On Thu, 6 Oct 2005 20:42:53 -0700, "Harold and Susan Vordos"
wrote:


"Robin S." wrote in message
. ..

"Harold and Susan Vordos" wrote in message
...

Crush roll forming is a method of shaping (dressing) a grinding wheel.
The
desired (circular) form is slowly driven and pressed against the wheel
of
the machine. The form drives the grinding wheel and slowly crushes the
wheel until the profile has been generated in the grinding wheel. It's
not
something I've experienced, but I'm aware of its existence. Difficult
forms can be so dressed into wheels when other methods are not
available.
Can't help but think that in today's world, it would be done
differently,
but it was, apparently, commonly done before CNC.

Harold,

Interesting info.

I looked it up a bit, and came up with this: http://www.drkaiser.de/en It
looks like the same idea with diamond instead of HSS or carbide (which, I
read, were the common materials for crush roll form dressing).

Regards,

Robin


Shocking revalation! Thanks for the link, which I found interesting. I
figured things had changed, but could't imagine to such a degree.

Harold


Hmmm. That looks like the kind of tooling I saw at a twin screw
extruder manufacturer. They used cnc grinding to generate the screw
element profiles, and had automatic cnc dressing of the wheels to keep
them in spec. That was a cool visit. I got to see the sintered metal
hydrostatic pressing operation, although that was under license from
my company, so I can't describe it. Bummer.

Pete Keillor

"Harold and Susan Vordos" wrote in
:


"Robin S." wrote in message
.. .

"Harold and Susan Vordos" wrote in message
...

"Inho Sung" wrote in message
...
Is there anybody tell me about the roll forming?



In reference to grinding wheels?


Harold,

My experience concerning roll forming has been making tubes out of
sheet. What does it refer to in the grinding world?

Regards,

Robin

Crush roll forming is a method of shaping (dressing) a grinding wheel.
The desired (circular) form is slowly driven and pressed against the
wheel of the machine. The form drives the grinding wheel and slowly
crushes the wheel until the profile has been generated in the grinding
wheel. It's not something I've experienced, but I'm aware of its
existence. Difficult forms can be so dressed into wheels when other
methods are not available. Can't help but think that in today's world,
it would be done differently, but it was, apparently, commonly done
before CNC.

Harold,

It's still being used on CNC grinders. CNC dressing has probably cut down
on the number of machines equipped with crush roll dressers, but recently I
was involved with a project where they will be used on a CNC cylindrical
grinder.

The term "roll form" can have a lot of different meanings in metal working.
Off the top of my head here are a few examples: roll form tapping, thread
rolling, roll forming as in splines and knurls, tube forming, roll forming
bars as in hex and square stock, and roll form marking.


--

Dan

"D Murphy" wrote in message
...
snip-----

Harold,

It's still being used on CNC grinders. CNC dressing has probably cut down
on the number of machines equipped with crush roll dressers, but recently
I
was involved with a project where they will be used on a CNC cylindrical
grinder.
Dan


Thanks, Dan. I figured by now it would be obsolete. Just goes to show some
things die hard. It must be a pretty good system. Wish I'd have had the
opportunity to explore it in my grinding days, but we had no need.

Harold