Chris - it must be press brake season! I've been working on retrofitting
an Accurpress 25 ton unit (about the same size as yours) with a Vickers
proportional valve for the hydro and a 2 axis backgauge. I originally
built a (really long) component that hard-coded the workflow, but about
a month ago rewrote everything once I was able to tune the proportional
valve loosely enough to act as a servo. Realizing that CNC builders
years ago (like Moog) figured out servo hydraulics, I was actually
surprised that it took so long to trust it in a servo mode than just an
open loop floating ram. (My original testing gave so little confidence
that it could be trusted that I didn't focus on it - however it just
never "sat right" running as an open loop positioner that I ended up
just getting lucky to trying again.)
To David's comment - "press brake friendly" is a real thing - in the
shop I'm doing this work for currently, they are a mix of CNC, form and
weld folks; the CNC guys know g-code and automation, the others not so
much. The original control for this press (which was Windows based and
died horribly despite a pacemaker and multiple surgeries) while it was a
3-axis control, looked and acted unlike LCNC-Axis, for instance. It was
a well-designed Mattel or FisherPrice experience. Axes references like
X,R1,R2 and Y for a vertical traveling ram make perfect sense to a press
op, but to give them letters of X,Y and Z would completely mess them up.
Little pictures in the right spot help a lot, and there's really no use
for a backplot.
I'll try and get a quick vid up of the version I'm working on too as a
comparison, and eventually post the glade, python and configs for review.
BTW Chris, kudos on the slick shoe stops for repositioning the die
between the multiple operations - you know your craft well!
Ted.
On 2/5/2019 7:03 AM, emc-users-requ...@lists.sourceforge.net wrote:
Date: Mon, 4 Feb 2019 21:47:25 -0600
From: Chris Kelley<tensait...@gmail.com>
To: "Enhanced Machine Controller (EMC)"
<emc-users@lists.sourceforge.net>
Subject: [Emc-users] CNC Press Brake at TXRX Labs
Message-ID:
<CAEuXn91QmF_NtBOXb3RH_n=q3gjr4iul9pm35k66vrylecq...@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
I've been working on retrofitting a CNC press brake at TXRX Labs in
Houston, TX.
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