RE: [CAD_CAM_EDM_DRO] Rotating nut ballscrew
Posted by
Leslie Watts
on 2004-12-10 13:38:50 UTC
Agreed rotating screw would not work here. Spinning the nut
could be ok but there are some issues if they are not specifically
designed for it....like dynamic balance and grease slinging. The
drive for rotating nuts is a bit complex and expensive as well.
It does have great advantage though.
If you went with the belt and could handle perhaps .1 mm repeatablity
and somewhat less stiffness that would be the best bet. Speeds of
10 m/min or more would be easy.
The other Les
Leslie M.Watts
L M Watts Furniture
Tiger Georgia
(706) 212-0242
Main page:
http://www.lmwatts.com
Engineering:
http://www.lmwatts.com/shop.html
Cnc surplus for sale:
http://www.lmwatts.com/forsale.html
Carved signs:
http://www.lmwatts.com/signwp.html
-----Original Message-----
From: Les Newell [mailto:lesnewell@...]
Sent: Friday, December 10, 2004 4:15 PM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Rotating nut ballscrew
Hi,
I am planning a router (about 600mm x 1200mm) and I have some suitable
ballscrews. The problem is that they are only 4mm pitch. As I am looking
for a feed rate of at least 4m/min, preferably 8m/min the screws will
have to rotate at anything up to 2000RPM. Obviously spinning a 12mm
diameter 600mm long screw at 2000rpm is going to result in the screw
whipping and generally trying to destroy itself. It would not be too
difficult to spin the nuts instead but would they function correctly at
2000RPM? I have seen plenty of rotating nut systems but none that have
been spinning at high speed.
The other alternative is to forget the screws and go for HTD belt drive.
Les
could be ok but there are some issues if they are not specifically
designed for it....like dynamic balance and grease slinging. The
drive for rotating nuts is a bit complex and expensive as well.
It does have great advantage though.
If you went with the belt and could handle perhaps .1 mm repeatablity
and somewhat less stiffness that would be the best bet. Speeds of
10 m/min or more would be easy.
The other Les
Leslie M.Watts
L M Watts Furniture
Tiger Georgia
(706) 212-0242
Main page:
http://www.lmwatts.com
Engineering:
http://www.lmwatts.com/shop.html
Cnc surplus for sale:
http://www.lmwatts.com/forsale.html
Carved signs:
http://www.lmwatts.com/signwp.html
-----Original Message-----
From: Les Newell [mailto:lesnewell@...]
Sent: Friday, December 10, 2004 4:15 PM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Rotating nut ballscrew
Hi,
I am planning a router (about 600mm x 1200mm) and I have some suitable
ballscrews. The problem is that they are only 4mm pitch. As I am looking
for a feed rate of at least 4m/min, preferably 8m/min the screws will
have to rotate at anything up to 2000RPM. Obviously spinning a 12mm
diameter 600mm long screw at 2000rpm is going to result in the screw
whipping and generally trying to destroy itself. It would not be too
difficult to spin the nuts instead but would they function correctly at
2000RPM? I have seen plenty of rotating nut systems but none that have
been spinning at high speed.
The other alternative is to forget the screws and go for HTD belt drive.
Les
Discussion Thread
edparenteau
2004-12-08 12:56:34 UTC
driving a router
Robert Campbell
2004-12-08 13:13:54 UTC
Re: [CAD_CAM_EDM_DRO] driving a router
JanRwl@A...
2004-12-08 14:26:03 UTC
Re: [CAD_CAM_EDM_DRO] driving a router
lcdpublishing
2004-12-08 15:44:59 UTC
Re: driving a router
Dave Rigotti
2004-12-08 15:53:06 UTC
Re: [CAD_CAM_EDM_DRO] Re: driving a router
Les Newell
2004-12-10 13:10:52 UTC
Rotating nut ballscrew
Leslie Watts
2004-12-10 13:38:50 UTC
RE: [CAD_CAM_EDM_DRO] Rotating nut ballscrew
Les Newell
2004-12-10 14:13:01 UTC
Re: [CAD_CAM_EDM_DRO] Rotating nut ballscrew
JanRwl@A...
2004-12-10 22:01:17 UTC
Re: [CAD_CAM_EDM_DRO] Rotating nut ballscrew
R Rogers
2004-12-11 08:09:35 UTC
Re: [CAD_CAM_EDM_DRO] Rotating nut ballscrew
turbulatordude
2004-12-11 09:11:40 UTC
Re: Rotating nut ballscrew