Re: [CAD_CAM_EDM_DRO] controlling hydraulics with Mach 2

Hi Todd

I had the same idea about 8 years ago. I had a cintimatic mill with
hydraulic servos and a bad control. I retrofitted a PC using CNCPro and a
motion board with Galil chips. Spent a couple days building the electronic
interface and installing encoders and then watching the table try to leap
off the ways!! I scrapped that idea and installed dc servo amps and motors
and it's been making chips ever since.

There's a good reason why you seldom see a hydraulic servo on a machine tool
any more. They were plagued with many problems. Of course, this is just
my 2 cents worth.

Regards,
Bob

----- Original Message -----
From: "Todd W. Syssa" <procisionengineering@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Saturday, June 05, 2004 12:01 PM
Subject: [CAD_CAM_EDM_DRO] controlling hydraulics with Mach 2


> Anyone out there ever control hydraulics with Mach 2
> or other CNC PC based controller?
>
> I have a proportional hydraulic valve that uses 12 VDC
> and varies fluid with current (.6-1.2 amps) as well as
> an on off valve that uses 12 VDC to power the solenoid
> for each direction.
>
> I also have a linear encoder attached to the carraige
> of each slide and have gotten both encoders to work
> with the Mach 2 demo. My question is about converting
> the output used for a servo/stepper motor to making it
> useful for turning on and off the hydrualic
> cylinders...
>
> ...is modifying a servo amplifier a possibilty? Any
> ideas would be helpful!
>
> Thanks,
> Todd W
>
>
>
>
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