Re: [CAD_CAM_EDM_DRO] machine ways was Re: Motor vs. Servo

Sort of, using their dovetail setup, but backing it up differently. Consider
the following:

________________________________________
| |
| table |
|__________________ _______________|
________________ / \ _____________
// \\
base // \\ base
//_____________\\
/ |__ __| \
\ /
,O.
__//_\\__
|_________|


The section below center of the dovetail would be a, "Roundway", roller set up.
I, "drew", it in, "upside down", as the roller base is more substantial than the
rail base. This would allow wear adjustments as simple as cranking the roundway
base and rail further up into the dovetail. Roundways can be checked out at:

http://www.thomsonindustries.com/Sections/Products/OldWeb/oldweb_products_main.asp?PC=5000000

They're under the linear guides section, and they have both single, or dual,
(as per above), types.

Bill

On Sat Dec 29 07:47:05 2001, Gail & Bryan Harries, <gab@...> wrote:

>Bill,
> is this what you where thinking of?
>
>http://www.turnomat.com/bearing.html
>
>Bryan
>
>-----Original Message-----
>From: Bill Vance [mailto:ccq@...]
>Sent: Saturday, 29 December, 2001 10:36 AM
>To: CAD_CAM_EDM_DRO@yahoogroups.com
>Subject: Re: [CAD_CAM_EDM_DRO] machine ways was Re: Motor vs. Servo
>
>
>Yo Ballendo;
>
>Has anyone ever combined both slide and roller type systems? If 'twere done
>right, it seems like it could improve things in a number of, "ways", like
>improved movement/friction, adjustment, (just crank it a little tighter),
>load
>bearing, and etc. :-)
>
>Bill
>
>On Sat Dec 29 01:47:51 2001, ballendo, <ballendo@...> wrote:
>
>>Hello,
>>
>>We'll try to clear it up :-)
>>
>>Ways are a surface that something else slides upon. The term can
>>refer to both the "slider" and the "slid-upon". Not all "ways" are
>>in machine tools. For example, when old ships (and even new ships)
>>were launched they slid down greased wooden "tracks" (planks, logs,
>>etc.) which were called ways. The ship was said to be sliding down
>>the ways into the water.
>>
>>The part of our tools corresponding to the "ship" is a way also. The
>>two parts together are called "ways".
>>
>>In the ship description the "way" supports the ship that is sliding
>>upon it. Often one of the two "ways"(sliding surfaces) of a given
>>axis will be shorter than the other(just as the ship is shorter than
>>its track). The short one may slide on the long one (as in the ship
>>example), or the other way (pun intended).
>>
>>In machine tools we have two general types of way, the dovetail and
>>box. Here is a link to the box style:
>> http://www.mfg.mtu.edu/marc/primers/machtool/gif/mt3.gif
>>
>>Any decent picture of a Sherline mill or lathe will show you its
>>dovetail ways. Also bridgeports, machinist vises, etc. Even better,
>>at the Sherline website there is an instruction sheet which describes
>>adjusting the gibs of these tools. The description there should lead
>>you out of any remaining confusion.
>>
>>Now the fact is that the two parts of the dovetail ways and box ways
>>both intermesh so it's sometimes hard to tell which is "in", and
>>which is "out". We usually just say something slides "ON" the ways...
>>
>>A final thought to confuse things<G>: The term way was created before
>>we had roller and linear bearings for our machine tools. So a modern
>>tool may have parts referred to as ways, that DON'T SLIDE. They roll.
>>And they might not be "boxlike" or "dovetail" at all. Since they
>>function the same as the sliding type we still call them ways.
>>
>>The term "rails" is sometimes used (in place of "ways") for some
>>types of modern linear bearings, and I've heard an old-timer or two
>>refer to even the old-style sliding ways as rails.
>>
>>Hope we're a ways from where we started, :-)
>>
>>Ballendo
>>
>>P.S. To answer your exact question, I would say that the table slides
>>on the saddle(x axis), and not even mention the ways... (The ways are
>>a PART of the table and saddle.) The Table/saddle assy. then slides
>>on the Machine Base(if a bedmill), or knee(for a knee mill) to make
>>up the Y axis.
>>
>>> > Bill Vance wrote:
>>> >
>>> > Now I'm getting confused again, (don't worry it isn't hard to
>>do). :-)
>>> >
>>> > So a table would slide _on_ ways, or _in_ ways? <snip>
>>
>>
>>
>>
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>>List Manager
>>
>>
>>
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>>
>>
>
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--
----------------------------------------------------------------------------
RKBA! ***** Blessings On Thee, Oh Israel! ***** 4-19!
----------------+----------+--------------------------+---------------------
An _EFFECTIVE_ | Insured | All matter is vibration. | Let he who hath no
weapon in every | by COLT; | -- Max Plank | weapon sell his
hand = Freedom | DIAL | In the beginning was the | garment and buy a
on every side! | 1911-A1. | word. -- The Bible | sword.--Jesus Christ
----------------+----------+--------------------------+---------------------

Constitutional Government is dead, LONG LIVE THE CONSTITUTION!!!!!

----------------------------------------------------------------------------