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1

General Mach Discussion / Lots of Questions- ac servo spindle, macros, and tool changing

« on: December 05, 2018, 09:19:44 PM »

The forum search is currently down so I don't know if these topics have been covered (I'm sure they have).

I have a Daewoo Puma 6 that was built in 1984. It was working well up to a few days ago, there is a EPROM issue and I'm trying to track down a way to have new chips burned. Fanuc is telling me that I need to get the chips from the manufacturer of the machine, not the controller. I am thinking I would like to change the system over to Mach. I currently run Mach3 on my CNC router and have been very happy with it.

Current setup on the lathe-
Fanuc 6T Control
12 position tool turret (hydraulic driven with encoder)
Foot operated drawbar and tailstock

My concerns:

The spindle is a 15hp ac servo. There is nothing wrong with the servo drive but I am not sure how to go about controlling it. I do a fair amount of threading so this is important.

X and Z are both Fanuc dc servos, same as my router. I feel I can look at them as a reference for the lathe.

Tool changer and macros...

I need to be able to run a program start to finish with the ability for the machine to change tools. How is this accomplished?

I'm hoping there are a couple individuals out there that can give me some guidance on this or point me to someone that can.

Thanks,

Erik

2

General Mach Discussion / Kinda lost on servo setup- how can I control?

« on: June 08, 2017, 09:32:29 PM »

I'm pretty new to CNC and need some help on getting a machine running.

I recently bought a CNC router and I use Mach3 to run my programs. Works great.

I ended up with a CNC lathe last week, it's in need of an overhaul. Being new to CNC, I assumed that since the lathe was running servos I could just order a set of what the router has and be golden. Wrong. I ordered two gecko320X drives, smoothstepper, c25 terminalboard, and a 1200w power supply. Get into the lathe today and upon further inspection the servos are AC and at .9kw each, I would probably be under powered anyway.

I'm not sure how to proceed. The servos are Fanuc b6/2000 and require:

1)
2) 0V Reference voltage
3) IRC Note) Phase R motor current signal
4) ISC Note) Phase S motor current signal
5)
6)
7)

9) 0V Reference voltage
10) 0V Reference voltage
11) 24VC +24V power
(with tolerance of ±10%)
12) 15VC +15V power
(with tolerance of ±10%)
13) -15VC -15V power
(with tolerance of ±10%)
14) 5VC +5V power
(with tolerance of ±5%)

Can I even use the smooth stepper to get these voltages and how do you get negative voltage??

I'm thinking I may be better off to sell the AC servos and swap out for DC?

Any help is appreciated.