Re: [CAD_CAM_EDM_DRO] Re: VisualMill (was BobCAD/CAM)

I watched those videos and I still have a question. That seems to
me to be 4 axis machining. I believe that the machine is capable
of 5 axis movement but only 4 axes are used in the video. The
Z axis never moves. The tool's rotational axis always intersects
with the rotary table axis. I see the X, Y, A, and B axes moving but not the
Z axis. That part does not require 5 axis machining.

I don't mean to be picky but as a relative newbie I want to understand
the terminology properly.

Thanks,
Pete.

----- Original Message -----
From: gawnca
To: CAD_CAM_EDM_DRO@yahoogroups.com
Sent: Friday, March 14, 2008 10:23 AM
Subject: [CAD_CAM_EDM_DRO] Re: VisualMill (was BobCAD/CAM)


Pete,

Take a look at this and you'll see true 5 axis CNCing.

http://www.rainnea.com/MOV01123.MPG

http://www.rainnea.com/MOV01124.MPG

I don't need to say any more.

Greg

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Andrew Werby <andrew@...> wrote:
>
>
>
> 2b. Re: VisualMill (was BobCAD/CAM)
> Posted by: "Peter Reilley" micrio@... cnc_joker
> Date: Wed Mar 12, 2008 7:57 pm ((PDT))
>
> Perhaps I missed something, but I did not see any true 4 axis
milling in
> their videos. In every case the rotational axis of the tool went
> through the
> A rotational axis. In other words you did not need to move the X axis
> in any example they showed. Isn't this just 3 axis machining with one
> linear
> axis replaced by a rotary axis?
>
> Pete.
>
> [Usually, the 4th axis routines involve the X,Z, and A (rotary) axes
> moving while Y remains fixed at the center point, although there's also
> 4-axis indexing, in which X, Y, and Z move, then A increments
(typically
> 90 degrees) and another pass is run on the rotated part. Yes, I suppose
> you could say that this is not "true" 4 axis milling, if you define
that
> as all 4 axes moving simultaneously. But it's substantially different
> from regular 3-axis milling as far as the CAM system is concerned.]
>
> Andrew Werby
> www.computersculpture.com
>





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