Thread: Hello from Cardiff!
Driving the ballscrews via timing belts allows you to change the ratio - ultimately getting a higher feedrate. True it's more expensive, but if you want to use the motors to their full potential I think it's the way to go. You will of course loose a bit of resolution if it is geared up, and vice versa.
You still have the Z-axis bearings mounted to the Y-axis, not the rails. I'm pretty sure that putting them the other way round makes it stronger in general.
The aluminium extrusion should be strong...steel box section should be cheaper for the same strength. Consider putting an aluminum plate on the bed (maybe 10mm thick) to stiffen it up and give a good surface to hold stuff.
(I just typed this 3 times ... first time I accidently clicked close, next two times the cat closed it for me...)
The Ballnut on my drawring is tightly placed between the two bearings to reduce the size. switch the bearings onto the other side would lock the ball screw in between the bearings making it useless!
unless I did a re-design. would take maybe 5-6 minutes of my life, but it's dinner time and I'm bloody starving!
all the items in Sketchup I made, would it be worth having a sketch up section on here so that people can download them into there CNC machines within sketchup?
I made all mine my self apart from the spindle, would of shaved a lot of time off the design.
NEW MEMBER: anyone in the Cardiff areaBy david lewis in forum New Member IntroductionsReplies: 2Last Post: 07-12-2013, 12:39 PM
NEW MEMBER: From Oz - ex of Cardiff anf lost :PBy Carlb1058 in forum New Member IntroductionsReplies: 6Last Post: 02-04-2013, 03:57 AM
NEW MEMBER: Hi all from CardiffBy Stevonator in forum New Member IntroductionsReplies: 0Last Post: 21-06-2011, 01:40 PM
NEW MEMBER: New member from CardiffBy Eugene in forum New Member IntroductionsReplies: 2Last Post: 22-09-2010, 10:14 PM
NEW MEMBER: hello from on top of a hill near cardiffBy battwell in forum New Member IntroductionsReplies: 11Last Post: 20-08-2010, 08:49 AM