First off Happy Thanksgiving to all of my EMC/linuxCNC friends. I am
kinda new around here with EMC and I recently bought a used Cincinatti
Arrow 500 VMC for my shop. Initially the hope was to be able to fix the
original control and get it running. UNFORTUNATELY after several thousand
dollars were spent I had a few more failures of the original control
components and decided to just stop the bleeding here. I started looking
seriously into retrofitting the machine here and happened upon a couple
fellows who already have Cincinatti VMC's running under linuxCNC control.
After speaking with one of them and hearing good reviews I found my way
here.
My plan is to literally start over with this machine for the simple
fact that I do not trust any of the original components. Therefore I have
gutted the electronics cabinet of everything with the exception of the
original relays and the main on/off contactor rotary switch. The only
things remaining of the original control are going to be the main spindle
motor, the toolchanger and power drawbar pneumatics, and the limit switches
and home switches. I plan to purchase completely new motors and drives for
all three axes and I am seriously looking into the Teco models. These are
130mm 1000 watt 2000 rpm 4nm motors on the x and y and 6nm on the z axis.
I have already purchased a brand new Intel Atom D525 motherboard, a solid
state hard drive 90gb, 4gb ram, a brand new 15.6" widescreen monitor for
the control pendant as well as a sweet industrial waterproof/debris proof
keyboard. Just yesterday I purchased the Mesa Electronics KIT with the
5I25 and 7I77 analog drive boards and cabling.
The machine's electronics are substantially based on a 110v control
power setup for the relays and pneumatic solenoids apparently from what I
hear talking to Lee who has been so kind to share his experiences
retrofitting the same exact machine with the same exact control. I hope to
be able to learn from you guys here about what it takes to perform this
retrofit. The intention unless I am advised otherwise is to run the motors
and drives under an analog 0-10v control setup and use the original relays
that appear to be in good shape to switch the 110v pneumatics for the
toolchanger and power drawbar on and off as needed.
My initial GOAL is to get all three axes working with the limits and
homes setup and get a temporary pneumatic setup working for the power
drawbar so I can use the machine WITHOUT the toolchanger initially.
Eventually I hope to implement a ladder logic setup for the toolchanger to
get the entire machine working as it did originally only better. I am
looking for advice here about how best to approach this challenge and what
steps to take and in what order. Right now over this thanksgiving weekend I
hope to be able to start mocking up the new atom main board inside the
electronics enclosure and figure out what will go where. Not sure if I can
post pictures here but a picture is worth a thousand words I always say and
it would be nice to show what I am doing and how and my hope here is to
lean on you knowledgeable fellows and receive ideas and guidance about this
most elaborate build I have ever attempted. Anyways, just saying hello and
I am hoping to hear from many of you and again Happy Thanksgiving....peace
Pete
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