Re: [CAD_CAM_EDM_DRO] Hardinge CHNC, DC spindle motor drive, turret, encoders, ...

Ralph Seguin wrote:

> http://www.artsoftcontrols.com/forum/index.php?topic=3641.0
>
> I'm in the process of retrofitting a Hardinge CHNC (serial # CNC 532).
> The old Allen Bradley control, drives, ... were all long gone before
> I got the machine.
>
> Anyhow, the spindle motor is a DC servo motor and the Hardinge person
> told me that it is rated at 5HP (nameplate says 3500 RPM, but nothing
> about voltage/amps/wattage/...).
>
> The Hardinge parts dept didn't have any info on it other than the
> replacement motor cost: $13000.00 !!!!
> Now, if I could just sell them my motor for half of that price...
>
> Does anybody have specs on that DC servo motor?
> Anybody have a speed control (or position control) drive for it or
> recommendation for one?
>

Here's a servo amp that likely would handle it, 25 A at 180 V.
<http://cgi.ebay.com/Advanced-Motion-Servo-Amplifier-BE25A20G-Model-w-cable_W0QQitemZ120140325743QQihZ002QQcategoryZ78191QQrdZ1QQcmdZViewItem>

> Best way of doing the air/pneumatic driven turret? I'm planning on
> using Mach 3 Turn software on PC using parallel port. Anybody have a
> PLC set up for doing the turret indexing?

Ray Henry did one of these using my PWM servo amplifiers and
Universal PWM Controller board for the servos, and an off-the
shelf I/O board and software for the rest of the machine. He
used EMC. Oh, you are going to have to replace the resolvers
with encoders for most servo drive systems.

>
> Specs on the Electro Craft E660 DC servo motors (X and Z axis motors)?
> The ElectroCraft site doesn't seem to have much info other than the
> motor being 200W.
>

You need to know the winding number to get any more data anyway.
These motors will be E660-n, where the n tells what the
winding is.

Jon