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Learn about
Centroid CNC controls
B3EC
Bed Mill
E8EC
Bed Mill
E5FC Bed Mill
E6FC CNC Mills
MPG Handwheel
Built-in Intercon Conversational Programming
Also processes standard FANUC G-Code
USB - Network - RS-232
Communications are standard
Very High Quality
cnc knee mills
Larger 3 axis CNC
milling machines with
quill type spindles.
E series CNC machining center
Industrial milling profit center
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Many web sites focus on ad placement to make their money.
Machines in Motion is focused on Quality CNC machine tools
and increased shop productivity.
New ATRUMP Milling Machines
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In the past the Bridgeport milling machine was a fine piece of iron. Today Atrump has captured the market place for high quality at an affordable price. It's just not possible to be the cheapest cnc machine while retaining a professional level of quality. Our target market for these fine cnc machine tools is shop owners who recognize and appreciate great value in cnc machinery.
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Lower Cost Open Bed Mills
Click on photos shown along the right side.
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Atrump's model xxFC milling machines
utilize a quill style spindle. Sometimes it is desirable to have one
mill that performs both manual operations and full 3 axis CNC programmable
machining. Smaller models can be delivered with R8 taper or NTS#30 taper
spindle nose. Most models come with a NTS#40 taper spindle as standard.
The head on a FC model machine may resemble the type found on a typical knee
mill, HOWEVER, these machines are built with specially engineered, oversized
castings and quills. The B8FC uses a 7 1/2 horse power spindle motor. |
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OPEN BED MILLS
(typically in stock)
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DC Vs. AC Servo Motors
Often the question comes up:
"Should
I order my machine with DC servo motors or the new AC brushless servos?"
The choice is easier than you might think.
- DC servo motors have
been around for decades. They are well proven and reliable. Out of
a few hundred customer machines I don't sell more than one or two
replacement DC type servo motors each year.
- These motors have more
torque at feed rate speeds than the same sized AC servo motor.
- Finally the cost of these
simple motors is considerably less than a properly sized AC brushless
servo motor.
AC brushless motors do have their place in modern machine
tool.
- Ac servo motors
provide higher working speeds. This gives your machine quicker acceleration
and faster rapid speeds. A feature that can be important in
time sensitive applications.
- The costs for AC
brushless motors become much closer to that of the DC motor in the
higher output sizes.
- The overall size and
weight of an AC brushless motor is considerably less than the same
sized DC type servo.
Larger Atrump mills will come with AC brushless motors as standard equipment. The machines listed on this page all come standard with 29"/lbs. or 40 "/lbs. DC servo motors. If higher rapid speeds are justified for your application then we will build your new Atrump milling machine with AC brushless servos.
4th axis coordinated positioning is handled inside your main G-code program. No outside programming box is needed.
Of course if you already own a rotary table with a programming box your Centroid control can handle that too.
View 4th axis web page |
Download rotary tables .pdf file.
Rotary tables literature.pdf file is just over 4Mb
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