Lightning strikes in quincy mi

More Changes For The Better

Another Shot
 

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Even More Pictures

We Are Going To Be Posting More Pictures Daily As We Get Closer To Theus Open
 

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Looks like NIT rails over 80/20. MUCH better than using the uhmw slide bearings.
What size is the leadscrew Lee?
 
JoeyInCali said:
Looks like NIT rails over 80/20. MUCH better than using the uhmw slide bearings.
What size is the leadscrew Lee?
Click to expand...
COATED BALL SCREW WITH ANTI BACKLASH NUTS 8 THREADS PER INCH
FOR LIGHTNING SPEEDS WHEN NEEDED WE ARE ALSO 80 20 DEALERS
THERE VERY CLOSE TO US ONLY FIRST CLASS PARTS USED HERE
 
brianna187 said:
COATED BALL SCREW WITH ANTI BACKLASH NUTS 8 THREADS PER INCH
FOR LIGHTNING SPEEDS WHEN NEEDED WE ARE ALSO 80 20 DEALERS
THERE VERY CLOSE TO US ONLY FIRST CLASS PARTS USED HERE
Click to expand...
Ball screws instead of ACME or regula type?
Much more accurate and stronger.
thnx
 
Lee,

Are they ball screws, or coated acme lead screws?

They look like coated acme. Most ball screws are not 8 tpi, and anti backlash is usually accomplished with 2 ball nuts with either a threaded or spring loaded coupler. The picture showed what looks like a typical acme anti backlash nut.

Actually, I think the acme screw is much better for shaft machines. I have several machines and only used a ball screw on one of them. I just worry about the dust getting in the ball nut.

I like the 1/2x10 5 start acme screw from Nook industries. I use the anti backlash nuts from www.dumpstercnc.com. These nuts are the nuts! Zero backlash, they are cheap and easy to set up, and they last forever! My machines run 6 to 7 hours a day for 5 days a week, and I have not worn one out yet!

Royce Bunnell
www.obcues.com
 
all this talk about anti backlash nuts and ball screws is getting all turned on.

good job lee looks like you built a great machine. when you told me it was the sh!t i believed you.

see you in a month pal. look like may have to save my pennies
 
dave sutton said:
all this talk about anti backlash nuts and ball screws is getting all turned on.

good job lee looks like you built a great machine. when you told me it was the sh!t i believed you.

see you in a month pal. look like may have to save my pennies
Click to expand...


DAVE JUST TALKING TO THE DONALD IN NYC TODAY HES LOOKING FOR A PERSONAL ASST. I MENTIONED YOU ILL PM YOU HIS OFFICE NUMBER ..LEE
 
Mechanical disconnects can be adapted to any equipment. Limit switches are dependant upon the software the machine is using. I'm not familiar with what the software that is being used but everyone seems to be raving about it so I'm pretty sure it would support them. On my CNC i put on limit switches that I purchased for less than 2.00 each at a surplus store.

Unless Sherline has got into a new market since I screwed around with them, they never built a CNC mill or lathe. They sold their machines CNC ready and other companies would adapt the electronics and operating software Mine used AHHA that had the option for limit switches.

Dick
 
dchristal said:
It is very possible (and cheaper) to operate a machine such as this without limit switches or spindle control. Sherline cnc stuff has neither, for instance.

If you are going 'whole hog', here's a source for a some pretty good I/O boards.
http://campbelldesigns.net/index.php
Click to expand...

Bob Campbell used to have, and probably still has a number of tutorials on CNC theory and construction on the web. I read those articles a others a number of times before building my Gantry system. Very helpful.

Dick
 
dchristal said:
It is very possible (and cheaper) to operate a machine such as this without limit switches or spindle control. Sherline cnc stuff has neither, for instance.

If you are going 'whole hog', here's a source for a some pretty good I/O boards.
http://campbelldesigns.net/index.php
Click to expand...

Here is another option if you would like to use some else than the parallel port :http://www.safeguardrobotics.com/default.aspx?tab=cncbrain

I have not tested it yet but I have narrowed it down to either the Brain or the Campbell card. Have not decided though...:scratchhead:
Kent
 
JoeyInCali said:
8 tpi you mean.
It's looking good.
Click to expand...

Joey, Lee is correct that these are 5 threads per inch ball screws. They are also coated. I have the first machine. It was confusing since we tried several setups befor we setled on this one. At 5 threads per inch and micro stepping with stepper motors we still have a resolution of less than .001" wich is just fine for cue work. The trade off for 5 tpi rather than 20 tpi is speed. Plus the ballscrew has alot less resistance to rotate than leadscrews. I have had my machine up to 150 inches per minute and if my computer would have output a faster pulse train I could have gone faster. I however will end up running in rapid around 120 ipm. By the way Joey, wait untill you see the storm. If you guys are impressed with the lighting you will be blown away.

Jim.
 
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