Page 5 - Exlar - Exlar electric test and simulation actuator systems
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The Solution all-electric actuator which is
extremely compact, yet de-
The Operation -- Exlar’s patented livers similar performance
linear actuator is based on a to a hydraulic cylinder in
unique design for integrating a terms of force, robustness
robust and effi cient threaded roller to shock and long service
mechanism into the interior of a life.
high power density, high perfor-
mance brushless servo motor. In response to current fl ow,
This combination results in an the servo motor produces
torque and power in rota-
tion. The internal roller
screw mechanism converts
MS Style Connectors Std.
the rotational motion and
torque to a high force, high
speed linear output to act
on the the applied load.
Construction includes a
series of load-bearing,
threaded rollers assembled The greater number of
in a planetary arrangement.
This assembly pro- contact points in a roller
vides the mechanical screw compared to a ball
interface between screw (above) gives roller
the threaded inside screws a longer life, higher
surface of the hollow load capacity and greater
(rotating) cylinder and stiffness.
the threaded surface of
the (force-generating)
extending rod. The threaded surfaces of the
rollers are of a matched helix
confi guration and precision
machined to contact the rotating
Position cylinder and follower at many
Feedback points concurrently. The large
number of mechanical inter-
faces (typically in excess of 100)
Inside Threaded Cylinder combine with their shape to cre-
ate a total contact surface area
much greater than that found in
Neodymium Iron a comparable sized ball screw
Boron Magnets mechanism. This unique design
provides dynamic life and shock
Integral 3 Phase DC resistance which is typically 15
Brushless Servo Motor with times greater than ballscrew
T-LAM Stator mechanisms with similar dimen-
TM
sions.
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