[mkuivamaki]

Hello!

Just wanted to share my build project It's my own design and will be mainly used to mill aluminum and MDF molds. More specs found on gallery comments. Feel free to ask if you have any questions

Here's the link to my Picasa-gallery:
https://picasaweb.google.com/1000918...3?noredirect=1



Cheers,
Mikko

[SCzEngrgGroup]

VERY nice! By far the best ground-up build I've seen here!

Regards,
Ray L.

[mkuivamaki]

Hmm, weird. Please try this one:
Picasa Web Albums - Mikko Kuivamäki

Choose CNC V3 folder to see pics

[hoss2006]

Your link is giving an internal server error.
Hoss

[SCzEngrgGroup]

Your link is giving an internal server error.
Hoss

Works fine for me. Could be a temporary problem with your ISP...

[hoss2006]

I can see them now after I went to google first and logged in, works now, very nice!
Hoss

[amyers]

I can see them now after I went to google first and logged in, works now, very nice!
Hoss

thanks for the tip hoss i was having the same problem. stellar work mikko, is that your vmc or one you borrowed the use of?

[mkuivamaki]

thanks for the tip hoss i was having the same problem. stellar work mikko, is that your vmc or one you borrowed the use of?

That vmc is used on nearby vocational school where the teacher and few students did frame machinings among their lessons

Still someone having problems with that picasa link? I don't get it, the gallery should be public and visible for everybody without google login.

[GG67]

Very nice work.

What size linear rails did you use for that?

Mind letting us know where you purchased them?

Thanks,

GG67

[mkuivamaki]

Very nice work.

What size linear rails did you use for that?

Mind letting us know where you purchased them?

Thanks,

GG67

Thanks. Those rails are 20mm wide (HIWIN HGR20) and bought them from ebay, seller solar.jean
Total 12pcs of flanged bearing blocks + about 3 meters of rail. Seller gave some discount.

hiwin from solar.jean | eBay

[mkuivamaki]

Mapped X and Y axis ballscrews today. I have chinese RM1605 ballscrews. I used linear encoder to read real movement of each axis. After screws were mapped I made an compensation table to software and got pretty good results:

RM1605 ballscrew pitch error compensation (EdingCNC software) - YouTube

For example Y-axis ballscrew had 0.21mm error during 225mm travel (moved 224.79mm). More than I expected first!
X-axis had 0.29mm error during 325mm travel.

Y-axis ballscrew pitch error:


I had already changed all of the ballscrew balls with bigger ones so backlashes were under 0.01mm.

[Spk64]

Very nice build. Should perform well.


Sent from my iPad using Tapatalk HD

[hoss2006]

Like I said it worked fine once I logged in.
Hoss

[Fastest1]

Great work!

[wizard]

Looking nice!

The column is steel tubing but what is the base? It looks like the base is welded up out of solid bar stock.

One other question why the bed mill design instead of a router type approach?

[amyers]

Looking nice!

The column is steel tubing but what is the base? It looks like the base is welded up out of solid bar stock.

One other question why the bed mill design instead of a router type approach?

If you look at his album he's already built one of those.

[jakemestre]

Cool. Stands are so much more work than you first expect right? I love to see people doing analysis before they really get into the build. It's so useful to see how small changes can make sure a big difference in deflection or dampening. Keep up the good work. What do you think of the Leadshine servo-steppers so far? I'm incorporating them into a lathe but I haven't got anything wired yet. I'm curious to know how the perform.
Jake

[rwskinner]

Machine looks awesome! I only have one comment to make regarding the design and you may have already thought about it.

Your Z Axis, is on linear rails, and the ball screw is direct driven. Is there enough weight there to free spin the motor and screw when there is no power applied?
I initially had that issue with my machine after I first built it. When I powered the system off, the weight of the head would spin the ball screw and the head would come on down.

Richard

[gcofieldd]

Nice work! I like the solution you came up with for the base of the machine by using two pieces of box tubing welded to together--hadn't thought of that. I have started a scratch build design of my own and it looks very similar to what you have. Thanks for sharing!

[109jb]

Very nice. Quick too. One month from CAD to having the XY working. Impressive.