Re: [CAD_CAM_EDM_DRO] Re: small spindle ?
Posted by
556RECON
on 2012-06-08 23:06:45 UTC
Has anyone mentioned the Paul Jones spindle.
http://www.cnconabudget.com/
OLD BOB
Jeffrey T. Birt wrote:
http://www.cnconabudget.com/
OLD BOB
Jeffrey T. Birt wrote:
>
>
> Any decent ER11 chuck/collet will have run-out well below 0.0001”. The
> construction of the spindle in question looks to be a smallish DC
> motor, about the size of a battery powered drill, with a modified ER11
> collet chuck attached to the motor’s shaft. This type of motor is not
> deigned to handle a side load like that. By comparison a spindle or
> spindle/motor (such as used in commercial routers) has much larger
> bearings that are designed for that type of work.
>
> The PreciseBits collets for the Colt come in two flavors, of which the
> lowest grade provides a run-out of less than 0.0006”, the PG grade
> collets are less than 0.0004”. When you move up to the larger router
> motors the UP grade collets can provide a run-out of less than
> 0.0002”. These collets/closing nuts fit right in place of the stock
> collets and closing nut; there is no ‘mounting’ of anything.
>
> Jeff Birt
>
> Soigeneris.com
>
> From: CAD_CAM_EDM_DRO@yahoogroups.com
> <mailto:CAD_CAM_EDM_DRO%40yahoogroups.com>
> [mailto:CAD_CAM_EDM_DRO@yahoogroups.com
> <mailto:CAD_CAM_EDM_DRO%40yahoogroups.com>] On Behalf Of Larry Guthrie
> Sent: Friday, June 08, 2012 4:46 PM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> <mailto:CAD_CAM_EDM_DRO%40yahoogroups.com>
> Subject: Re: [CAD_CAM_EDM_DRO] Re: small spindle ?
>
> Jeff,
>
> I don't believe the motor used in those spindles is the same type as a
> battery powered drill. Why would they be? The bearings in any high
> speed spindle, small trim router motor, or a rotary tool such as the
> Proxxon are going to be radial bearings. Radial bearings are
> specifically called for when side loads are high. I suspect the
> bearings in the spindle in question (in the link) will last as long as
> the quality of the bearings used not the type of motor.
>
> However .0015 runout is pretty high for a spindle. It would have to be
> made pretty poorly to have that much runout. I can tune a drill press
> with a hammer and get runout that good (or poor). It's probably good
> enough for a hobby machine since it's too small to measure with most
> calipers. I suspect the poor runout specified is the result of the
> chuck used, not the motor bearings.
>
> Any idea what the runout of a trim router would be? Probably pretty
> low until the chuck is added. I would think that even a collet like
> the PreciseBits would be fairly difficult to mount to a router without
> increasing the runout. Seems to me that the only way to get precision
> for cheap would be a belt driven spindle. That would take the runout
> of the motor out of the equation.
>
> ljg
>
> Larry Guthrie
> yrralguthrie@... <mailto:yrralguthrie%40yahoo.com>
> <mailto:yrralguthrie%40yahoo.com>
> larry.guthrie@... <mailto:larry.guthrie%40yahoo.com>
> <mailto:larry.guthrie%40yahoo.com>
>
> ________________________________
>
> [Non-text portions of this message have been removed]
>
>
Discussion Thread
turbulatordude
2012-05-02 04:10:19 UTC
small spindle ?
Ron Thompson
2012-05-02 04:24:22 UTC
Re: [CAD_CAM_EDM_DRO] small spindle ?
Peter Homann
2012-05-02 05:02:05 UTC
Re: [CAD_CAM_EDM_DRO] small spindle ?
Art Eckstein
2012-05-02 05:51:12 UTC
Re: [CAD_CAM_EDM_DRO] small spindle ?
Andy Wander
2012-05-02 05:53:48 UTC
RE: [CAD_CAM_EDM_DRO] small spindle ?
Jon Elson
2012-05-02 07:58:29 UTC
Re: [CAD_CAM_EDM_DRO] small spindle ?
Randy Abernathy
2012-05-02 08:38:17 UTC
RE: [CAD_CAM_EDM_DRO] small spindle ?
David G. LeVine
2012-05-02 13:47:25 UTC
Re: [CAD_CAM_EDM_DRO] small spindle ?
turbulatordude
2012-05-02 15:57:22 UTC
Re: small spindle ?
VicS
2012-05-05 13:34:42 UTC
Re: [CAD_CAM_EDM_DRO] small spindle ?
Bob
2012-05-14 11:04:35 UTC
Re: small spindle ?
Jeffrey T. Birt
2012-05-14 17:02:06 UTC
RE: [CAD_CAM_EDM_DRO] Re: small spindle ?
LJG
2012-06-07 15:04:30 UTC
Re: small spindle ?
Jeffrey T. Birt
2012-06-08 08:12:38 UTC
RE: [CAD_CAM_EDM_DRO] Re: small spindle ?
Larry Guthrie
2012-06-08 16:04:20 UTC
Re: [CAD_CAM_EDM_DRO] Re: small spindle ?
Jeffrey T. Birt
2012-06-08 19:24:38 UTC
RE: [CAD_CAM_EDM_DRO] Re: small spindle ?
Jeffrey T. Birt
2012-06-08 20:46:11 UTC
RE: [CAD_CAM_EDM_DRO] Re: small spindle ?
556RECON
2012-06-08 23:06:45 UTC
Re: [CAD_CAM_EDM_DRO] Re: small spindle ?
Roland Jollivet
2012-06-09 06:45:58 UTC
[CAD_CAM_EDM_DRO] Re: small spindle ?
Craig Carmichael
2012-06-09 09:16:40 UTC
Mendel Reprap 3D Printer ?
Jamie Cunningham
2012-06-09 09:29:31 UTC
Re: [CAD_CAM_EDM_DRO] Mendel Reprap 3D Printer ?
Tobias Gogolin
2012-06-09 13:36:19 UTC
Re: [CAD_CAM_EDM_DRO] Mendel Reprap 3D Printer ?
Jack
2012-06-09 14:01:22 UTC
Re: Mendel Reprap 3D Printer ?
Craig Carmichael
2012-06-09 21:43:03 UTC
Re: [CAD_CAM_EDM_DRO] Mendel Reprap 3D Printer ?
Larry Guthrie
2012-06-11 20:10:29 UTC
Re: [CAD_CAM_EDM_DRO] Re: small spindle ?
Drew
2012-06-11 20:10:43 UTC
Re: [CAD_CAM_EDM_DRO] Mendel Reprap 3D Printer ?
Drew
2012-06-11 20:10:47 UTC
Re: [CAD_CAM_EDM_DRO] Mendel Reprap 3D Printer ?
David G. LeVine
2012-06-12 05:42:01 UTC
Re: [CAD_CAM_EDM_DRO] Re: small spindle ?
Craig Carmichael
2012-06-12 09:48:20 UTC
Re: [CAD_CAM_EDM_DRO] Mendel Reprap 3D Printer ?
Larry Guthrie
2012-06-16 04:52:19 UTC
Re: [CAD_CAM_EDM_DRO] Re: small spindle ?
turbulatordude
2012-06-16 05:00:31 UTC
Re: small spindle ?
douglas pollard
2012-06-16 11:00:00 UTC
Re: [CAD_CAM_EDM_DRO] Re: small spindle ?
Tony Smith
2012-06-16 12:31:51 UTC
RE: [CAD_CAM_EDM_DRO] Re: small spindle ?
turbulatordude
2012-06-17 07:25:47 UTC
Re: small spindle ?
Jeffrey T. Birt
2012-06-17 10:50:39 UTC
RE: [CAD_CAM_EDM_DRO] Re: small spindle ?
Tony Smith
2012-06-17 14:36:16 UTC
RE: [CAD_CAM_EDM_DRO] Re: small spindle ?