1200mmX900mmX170mm 4axis cnc

**Nr1madman** · 28-03-2018

What are you ruling out?
Several BOBs are 5 axis?
Are there motion controllers that are only 4? (Except the stand alone stuff you talked about above)

Skickat från min SM-G955F via Tapatalk

**Nickhofen** · 28-03-2018

I believe this is the only exception and I can tell that I am leaning towards the uc300 since the DDSCV can not support my four motors and a fifth for a 4th axis in the future,but about bob...I can't decide. :-/

**Nickhofen** · 29-03-2018

Any suggestions are welcome....

**Nr1madman** · 29-03-2018

I have no ideas for you.. I went with the 5$ bob.
Beginning to question if that was a good plan !

All the expensive ones seem good... But expensive ;)

Skickat från min SM-G955F via Tapatalk

**Nickhofen** · 29-03-2018

There must be a solution somewhere in the middle out there..lol

**JAZZCNC** · 29-03-2018

Originally Posted by Nr1madman

I have no ideas for you.. I went with the 5$ bob.
Beginning to question if that was a good plan !

All the expensive ones seem good... But expensive ;)

Skickat från min SM-G955F via Tapatalk

Cheap Bob's are like playing Russian roulette with a nearly full magazine.!! . . . . Long term they are not worth the hassle because at some point they will fail or cause issues along the way which will appear like coming from other areas of the machine. Before I started with CNC I had full head of hair and now I Dazzle planes on sunny day and I blame all on of cheap BOB's.!!!

**Nickhofen** · 29-03-2018

Originally Posted by JAZZCNC

Cheap Bob's are like playing Russian roulette with a nearly full magazine.!! . . . . Long term they are not worth the hassle because at some point they will fail or cause issues along the way which will appear like coming from other areas of the machine. Before I started with CNC I had full head of hair and now I Dazzle planes on sunny day and I blame all on of cheap BOB's.!!!

I work at Air Force so I have enough help from my job to grow a bald! Lol!!!
Any suggestions about a proper bob that I can make it work like a Swiss clock with the uc300 and all that at an affordable price...ops!

**Nickhofen** · 15-04-2018

Finish the power supply, thanks everyone for the help.

Click image for larger version.

Name: 30709821_2077342929213695_8405312996124917760_n.jpg
Views: 471
Size: 187.3 KB
ID: 24063

Click image for larger version.

Name: 30714117_2077030302578291_471645803476156416_n.jpg
Views: 448
Size: 59.4 KB
ID: 24064

Click image for larger version.

Name: 30703894_2076846262596695_139925915630043136_n.jpg
Views: 455
Size: 78.0 KB
ID: 24065

**Clive S** · 15-04-2018

Brill

It is good practise to not to daisy chain the 70V across each drive ie. use separate power leads from each drive to a common block and then connect the PS to the block. This ensures you are not getting a volt drop to each drive from the first one.

**Desertboy** · 15-04-2018

That's super tidy, I see you went DC in the end. What voltage output transformer is it? 50v?

I wired the transformer to a 13 amp light style switch and then my VFD and water pump to another switch and both of them are wired from the emergency stop.

This way I can easily turn the transformer on/off and if the vfd is powered the water pump is on. I have both switches and the emergency stop at the front of the machine for easy access in a row.

If I hit the emergency stop it kills power to both the steppers and the vfd, I still have to work out how to get it to trigger an estop on the pc but it's good enough for me at the moment.