Re: Overengineered CoreXY February 23, 2017 08:23AM |
Registered: 8 years ago Posts: 88 |
Re: Overengineered CoreXY February 23, 2017 08:42AM |
Registered: 8 years ago Posts: 15 |
Quote
anvoice
Here's a redesigned version of the printer as I have it so far. Now it uses 3 ballscrews and 2 linear guides for the Z, as well as dual 608 bearings for pulleys to accommodate 10mm belts on the XY. Haven't figured out what sort of gearbox I'll drive the Z with but I'll do a bit of research and probably manage.
[attachment 91056 coreXY_v1.jpg]
[attachment 91057 coreXY_v1-2.jpg]
Especially appreciate all of your feedback that helped make some positive changes.
Re: Overengineered CoreXY February 23, 2017 03:41PM |
Registered: 9 years ago Posts: 238 |
I believe 60T pulleys won't fit on the screws without extending outside the frame, which means I can't enclose it.Quote
sigxcpu
Why would you need a gearbox for Z? If you use common 20T pulleys on motors and some big 60T on Z ballscrews you get a 3:1 "gearbox". For 16T motor pulleys, even bigger ratio.
Re: Overengineered CoreXY February 23, 2017 04:17PM |
Registered: 9 years ago Posts: 238 |
Looks interesting.Quote
napierm
Quote
anvoice
Here's a redesigned version of the printer as I have it so far. Now it uses 3 ballscrews and 2 linear guides for the Z, as well as dual 608 bearings for pulleys to accommodate 10mm belts on the XY. Haven't figured out what sort of gearbox I'll drive the Z with but I'll do a bit of research and probably manage.
[attachment 91056 coreXY_v1.jpg]
[attachment 91057 coreXY_v1-2.jpg]
Especially appreciate all of your feedback that helped make some positive changes.
I'm using a common belt on my screws. 18-tooth drive pulley and 36-tooth driven pulleys. Find the belt you want to use 1st. The largest GT2 (2mm) belt I can find is a 2.2 meter loop.
I would put both Z-slides on the same wall with the single lift screw the middle. Easier to align.
Also, that single X rail needs some additional material in the X-Y plane to keep it from ringing. An angle attached to the back of the rail would do it.
For a pretty elegant design you might take a look at the pictures and links from this thread:
[groups.google.com]
Also, I've got some pictures posted in this thread:
[groups.google.com]
Cheers,
Mark Napier
Re: Overengineered CoreXY February 24, 2017 03:23AM |
Registered: 8 years ago Posts: 5,232 |
Re: Overengineered CoreXY February 24, 2017 05:19PM |
Registered: 9 years ago Posts: 238 |