Re: [CAD_CAM_EDM_DRO] Epoxy Granite

On 2/23/06, Jack Hudler <yahoo@...> wrote:
>
> Harko,
>
> I was looking at model 10B but don't have the pricing yet. Though I'm sure
> they'll want an at least an arm for if.
> http://www.airbearings.com/39
>
> I haven't modeled the difference of horizontal-vs-vertical lathe. Both
> have
> advantages and right now all I see is a simple X-Z setup, but I can
> imagine as I
> get closer to higher precision I may have to rotate the cutter (C) axis to
> keep
> it parallel to the radius of curvature.
>
> Leaning towards the horizontal model because it doesn't require a gantry,
> but
> the cost of the spindle will go up (300 lbs of glass initially + 650 lbs
> 3/4"
> invar turntable + ~250 lbs of mirror cell with actuators). I plan to turn
> it in
> situ so the there won't be any major deflections once the mirror is
> finished.
>
> I have 2 Keyence FC-2420 laser displacement sensors and controllers
> (Resolution
> .01um) that will monitor the turning and table runout. Probably add a few
> more
> for table tilt.
> http://www.keyence.com/products/vision/laser/lc/lc_specifications_1.php
>
> I'll checkout the Etel linears, thanks.
>
> Jack Hudler
>
> -----Original Message-----
> From: CAD_CAM_EDM_DRO@yahoogroups.com [mailto:
> CAD_CAM_EDM_DRO@yahoogroups.com]
> On Behalf Of Harko Schwartz
> Sent: Thursday, February 23, 2006 4:37 PM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: Re: [CAD_CAM_EDM_DRO] Epoxy Granite
>
> One Other thing the Spindle Bearings will cost a lot of money inorder to
> hold that size Mirror and have no runout.
>
> Harko
>
>
>
>
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