Large CNC Router

Just a follow up for the forum archive.... a copy & paste from ebay.

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Winning bid: US $2,025.00

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Ended: Feb-28-08 18:14:21 PST
Shipping costs: Pickup only - see item description for details
Ships to: Will arrange for local pickup only (no shipping).
Item location: Saint Johns, MI, United States
History: 14 bids
Winning bidder: loganavich( 30)

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Listing and payment details: HideShow
Starting time: Feb-18-08 18:14:21 PST
Starting bid: US $250.00
Payment methods: Money order/Cashiers check
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Seller: cnc-me( 79)
Feedback: 100% Positive
Member: since Mar-16-03 in United States

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Description (revised)

Item Specifics - Item Condition
Condition: Used

Item Specifics - Welders
Brand: -- Power Source: 208/240V Electric
Multi-Process: -- Current Type: 3 Phase
Processes: Plasma, Torch Condition: Used

Product Type : CNC Router

Up for auction is this NON WORKING Cobra CNC router made by Cobra Machinery of Garland,Texas.
This is a gantry type 2 1/2 axis machine, the Z axis is actuated by computer, with an air cylinder and stops.
Movement of X and Y axis is accomplished with special cogged belts which contain steel cables embedded in them.
X and Y axis ride on V shaped ways with matching wheels.
Pacific Scientific heavy-duty servomotors are reduced in speed with normal cogged belts at ratio of what looks to be 3:1.
The bed consists of plywood slats running parallel to the Y axis, in between these slats are vacuum cups that can
be adjusted from side to side. The vacuum cups are connected to air cylinders that pull your workpiece, down on the
bed of the machine. Some of the plywood slats are broken, these could be easily replaced.
The way this machine is made, It could easily be converted into a plasma or torch cutting machine.
You could remove the wooden slats and make up a pan to hold water,
take off the spindle, (and sell on E-bay) mount your Torch or Plasma, and you would have a large capacity cutter.
About 10 years ago we bought 2 CNC routers both not working, this one, and a Thermwood.
We decided to fix up the Thermwood because it had step motors and most likely
would be easier to retro-fit with a PC control. The Cobra is in our way, and we need the floor space.
Machine has not been run much at all, and has spent most of its time sitting idle in our
shop and at the previous owners plant. We have never run this machine, nor have we seen it run.
Also included is the Galil motion controller manual in a 3 ring binder.
This could be a great opportunity to get a large capacity machine at low cost, if you are handy
with electrical & mechanical systems of a CNC router.

We do not know much about this machine. The following has been tested:
Spindle motor runs, but only tested at 60Hz 3600 RPM as the machine does not have an inverter mounted in it.
Spindle seems a little loud -May need new bearings.
Both X and Y axis seem to move freely when pushed by hand.
LED's light on Axis drives.
LED's light on Galil Controller.

Machine: 1992 Cobra
Table: 5' X 12'
Z Axis Travel: 5"

Control: Galil DMC 720 2 Axis

Spindle Motor: 7 H.P. Pershke
Type: VS60.11-2 NEMA
Rpm: 17,550 @ 300 Hertz
Volts: 240
Phase: 3
Power Factor: .86

Axis Motors: Pacific Scientific (2 identical units)
Type: Brushless Servo
Model: F46GENA-R2-NS-NV-00
Torque: 61 Lb In
Amps: 6.8
Volts: 360 (Rated Buss Voltage)

Axis Drives: Pacific Scientific (2 identical units)
Type: Servo
Model: SC320

Vac Generator: Piab venturi type
Model: M250D
Art#: 32.01.012

Hold Down: Vacuum cups with pneumatic vacuum generator mounted in base of machine.

Buyer pays for all shipping costs.
Buyer can arrange shipping, or have us arrange (we do not have any discounts with any freight co.) or
buyer can pickup with flatbed trailer or truck.
Low flatbed trailer, with winch on front, would be ideal.
Item should be picked-up in two weeks after auction close.
Please contact us at (989)-224-8804 if you need more time to arrange this.
Weight is approx 3500 lbs
Width is approx. 6' Length is approx. 17' Height is approx. 5' 10"
We have a forklift, loading dock, and will assist you in loading, for free.
Cashier's check or money order if shipped.
Cash,Cashier's check or money order if buyer picks-up of machine.