Re: [CAD_CAM_EDM_DRO] Replaceable Rings

Hi David:
I assume you want to create the cavities on the inside of the ring.
This makes it a job that can only be realistically done a couple of ways.
One would be to set the job up on a rotary table, mount a right angle head
into a VMC and write the code as if you were doing a roll engraving job,
then do an axis swap to get the geometry oriented correctly for the mini
horizontal spindle.
Another way is to burn the shapes into the inner wall with a CNC sinker EDM.
This would require electrodes to be made and most likely, a sinker with C
axis capability.
Rolling the ring blank is not a great idea...it should be cut from billet
because it will be the devil's very own to get it to stay round if you roll
it and then machine it.
A third way is to split it into segments that can be machined
conventionally, and then join them with a sleeve around the outside.
Cheers

Marcus

----- Original Message -----
From: "davidjaypark" <davidj93@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Tuesday, June 21, 2005 4:59 PM
Subject: [CAD_CAM_EDM_DRO] Replaceable Rings


> Hey all,
>
> I was wondering if anyone out there could provide a solution to a
> production problem I am having. I want to establish a way to produce
> 10 diameter metal/plastic rings for a rotary moulder. After the
> material is rolled into a hollowed out ring(which I am not sure how to
> do), I would like to use some type of horizontal rotary head to drive
> the material around while some type of cutter engraves a die cavity
> into the metal/plastic. The metal will be flat, but in the shape of an
> extra large wedding ring. If anyone has any ideas of where to look to
> find a piece of equipment that could execute this job, I would
> honestly appreciate it more than you know. Really don't have a great
> deal of background in CNC but understand the basics of loading the
> geometry into a 3rd party CAD/CAM software program and generating the
> g-code for a small milling machine. Regardless, you can reply to my
> email address or at this site. Thanks again and look forward to
> getting your thoughts. Take care. Dave