4th Axis Question.

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Subject Author Date
4th Axis Question. BottleBob 03-21-2008
Posted by BottleBob on March 21, 2008, 7:12 pm
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To All:

        A regular asked me if I've even laid our 4th axis down flat on it's
back to machine something. I said no.

        So my questions IS: Is there anything you can do with a part in a 4th
axis laying flat on it's back that you can't do by putting your part
directly on the mill table?


--
BottleBob
http://home.earthlink.net/~bottlbob


Posted by Charlie Gary on March 21, 2008, 7:21 pm
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> To All:
>
> A regular asked me if I've even laid our 4th axis down flat on it's
> back to machine something. I said no.
>
> So my questions IS: Is there anything you can do with a part in a 4th
> axis laying flat on it's back that you can't do by putting your part
> directly on the mill table?
>
> --
> BottleBobhttp://home.earthlink.net/~bottlbob

Turn the outside of the material round by spinning the rotary while
moving x,y, and z to get it rubbing just right on the corner of the
spindle housing? Maybe clamp a threading tool to the housing and
single-point a thread on the outside of something too big to fit in
the lathe? Beginning to sound like a vertical turning machine.

Later,

Charlie

Posted by BottleBob on March 21, 2008, 7:45 pm
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Charlie Gary wrote:

>> So my questions IS: Is there anything you can do with a part in a 4th
>> axis laying flat on it's back that you can't do by putting your part
>> directly on the mill table?


> Turn the outside of the material round by spinning the rotary while
> moving x,y, and z to get it rubbing just right on the corner of the
> spindle housing?

Charlie:

        Why couldn't you interpolate the OD by using X, Y, Z moves? Or are
you saying machine the OD of something larger than the machine travels?

> Maybe clamp a threading tool to the housing and
> single-point a thread on the outside of something too big to fit in
> the lathe? Beginning to sound like a vertical turning machine.

        You could still thread the outside by clamping your part to the table,
no? Unless you're running into the travel limitation again.

--
BottleBob
http://home.earthlink.net/~bottlbob


Posted by Jon on March 22, 2008, 12:09 pm
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We have milled the OD of discs that far exceed the table travels.

Also milled features on the face of parts in a pattern larger than the table
travels.


> Charlie Gary wrote:
>
>>> So my questions IS: Is there anything you can do with a part in
>>> a 4th
>>> axis laying flat on it's back that you can't do by putting your part
>>> directly on the mill table?
>
>
>> Turn the outside of the material round by spinning the rotary while
>> moving x,y, and z to get it rubbing just right on the corner of the
>> spindle housing?
>
> Charlie:
>
> Why couldn't you interpolate the OD by using X, Y, Z moves? Or are you
> saying machine the OD of something larger than the machine travels?
>
>> Maybe clamp a threading tool to the housing and
>> single-point a thread on the outside of something too big to fit in
>> the lathe? Beginning to sound like a vertical turning machine.
>
> You could still thread the outside by clamping your part to the table, no?
> Unless you're running into the travel limitation again.
>
> --
> BottleBob
> http://home.earthlink.net/~bottlbob
>



Posted by John R. Carroll on March 21, 2008, 8:14 pm
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BottleBob wrote:
> To All:
>
> A regular asked me if I've even laid our 4th axis down flat on it's
> back to machine something. I said no.
>
> So my questions IS: Is there anything you can do with a part in a 4th
> axis laying flat on it's back that you can't do by putting your part
> directly on the mill table?

Yeah dumb ass. Turn the rotaty 90 degrees.
IOW. 3+2 with 15 rather than 85 degrees of rotation.


--

John R. Carroll
www.machiningsolution.com



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