Re: [CAD_CAM_EDM_DRO] Inaccessible milling?

You're welcome, Bill;

Note that even with a U-Head, though, you are limited by:

1. The diameter of the hole, (how much head movement).
2, Tool axis travel, (the lengthwise movement of the spindle, if the head has
this feature).
3. You're still likely to get rounded corners, with an internal, "plus sign",
shape.

Your best bet would be to mill it out to spec, and then bolt a face plate onto
it. If great accuracy is desired, I would bore the hole last, before removing
the workpiece from the clamps. Other procedures work, too, but this way would
tend to minimize having to re-measure it all.

Just a few thoughts.....

Bill

On Sat Jul 19 07:19:22 2003 Bill Kichman wrote:

>You guys (and gals?) are great, thanks for all the responses. Regarding the
>universal mill head, I lucked out and located a brand new, 1945 era set of
>accessories for my Van Norman 12 mill, including a slotter, a boring head,
>and yes, a universal head too. At any rate, I had assumed I could use that
>to work manually on this particular type application, I was just wondering
>if I was missing something else which would allow automation of the process.
>Maybe I could modify a toolpath in a 45 degree setup in each of (4) separate
>directions? I have no experience yet with G-codes, is that what the
>particular G-code recently mentioned sets up for?
>Thanks again...
>
>
>
>R. William Kichman, P.E.
>Kichman Engineering Associates
>103 Old Furnace Road
>Cornwall, PA 17016-0643
>tel/fax 717/270-0714
>----- Original Message -----
>From: <ccq@...>
>To: <CAD_CAM_EDM_DRO@yahoogroups.com>
>Sent: Saturday, July 19, 2003 1:01 AM
>Subject: Re: [CAD_CAM_EDM_DRO] Inaccessible milling?
>
>
>> On Fri Jul 18 20:21:04 2003 Harvey White wrote:
>>
>> >On Fri, 18 Jul 2003 22:15:02 -0400, you wrote:
>> >
>> >>Maybe this is an oft-asked noob question, but how does one typically
>mill a
>> >>part in which all areas are not directly accessible from overhead as in
>> >>normal overhead milling? For example, say I want to mill out a box
>whose
>> >>top opening is smaller than the interior area?
>> >
>> >As far as I know, you need a way of tilting the tool, which can be
>> >done possibly with a rotary table and the equivalent on the z axis,
>> >the tool can tilt to the vertical, and to do odd angles, you have to
>> >rotate the model, I think it takes a rotary table for that one.
>> >
>> >Harvey
>>
>> Hi guys;
>>
>> There are also, "universal", heads,that can turn in various directions.
>If you
>> can get the head in the hole, you just start chipping away at the inside.
>It's
>> most likely that this will result in a hemispherical hollow area inside,
>not a
>> hollow box though.
>>
>> Bill
>>
>> --
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>> An _EFFECTIVE_ | Insured | All matter is vibration. | Let he who hath no
>> weapon in every | by COLT; | -- Max Planck | 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
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>http://groups.yahoo.com/group/jobshophomeshop I consider this to be a sister site to the CCED group, as many of the same members are there, for OT subjects, that are not allowed on the CCED list.
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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 Planck | 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!!!!!

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