H2W Technologies, Inc 28310C Ave Crocker Valencia, CA 91355 USA
(888)-702-0540 (661)-702-9346 Ph (661)-702-9348 Fax
www.h2wtech.com info@h2wtech.com
DR Positioning Stage
Travel 160 inches [4 m]
Velocity 200 inches / sec [5 m/s]
Acceleration 9 G's 9 G's
Peak Force 1335 lbs [5933 N]
Continuous Force 445 lbs [1978 N]
Resolution .00004" or .0002" [1 or 5 micron]
The DR stage is a low profile, wider footprint, enclosed
positioning stage.
It is used in closed loop positioning applications that require high speed
and high accelerations of heavier loads.
The iron core coil assembly is magnetically attracted to the stationary
magnet assembly, which provides a preload for the bearing system. The
dual parallel linear bearing rails with 4 linear recirculating ball bushing
guides provide a much higher load carrying capacity. The wide low profile
of the stage ensures a stable platform for the payload or as the bottom axis
(X axis) of a stacked multi-axis system
The larger size of the stage allows for the mounting of a larger, higher
force linear motor.
The DR stage comes standard with bellows (folded way covers) with a
12:1 extension to compression ratio.
The cable carrier is oversized to allow for passage of customer payload
cables and hoses. The back of the cable carrier can be easily removed and
reattached to route through additional cables.
Advantages:
· Wide footprint, very stable platform
· Highest output force stage
· Available in 4 different widths
· Enclosed with bellows
· High Speed
Applications:
· Pick and Place
· Vision Inspection
· Parts transfer
· Clean room
The DR
positioning stage incorporates the latest in linear motion technology:
· Motors: Non-contact 3 phase brushless , low cogging, iron core
linear motor, commutated either sinusoidally or trapezoidally with
Hall Effects. The encapsulated laminated coil assembly moves and
the multi-pole single sided permanent magnet assembly is stationary.
There is a large magnetic attractive force which provides a preload
for the bearing system.
· Bearings: Linear guidance is achieved by using a 2 parallel linear
rail with 4 linear recirculating ball bearing guides. The bearing
guides are sealed with wipers to contain the lubrication and to keep
out debris. Periodic lubrication of the guides is recommended.
· Encoders: Non-contact glass or metal scale optical linear encoders
with a reference mark for homing. Multiple reference marks are
available and are spaced every 50 mm down the length of the scale.
Typical encoder output is A and B square wave signals but sinusoidal
output is available as an option
· Limit Switches: End of travel limit switches are included at both
ends of the stroke. The switches can be either active high (5V to
24V) or active low. The switches can be used to shut down the
amplifier or to signal the controller that an error has occurred. The
limit switches are typically an integral part of the encoder, but can be
mounted separately if required.
· Cable Carriers: Cable guidance is achieved by using a cable carrier.
Cable carriers are oversized to allow for routing of customers hoses
and cables
· Bellows: The DR comes standard with neoprene / nylon bellows with
Mylar stiffeners.
· Hard Stops: Hard stops are incorporated into the ends of the stage to
prevent over travel damage in the event of servo system failure.
Required Electronics:
The motor requires a 3 phase brushless amplifier with power supply, that is rated with sufficient current and voltage to meet the motion requirements. The
inductance of the linear motor coil should be greater than the minimum load inductance of the servo amplifier.
A programmable motion controller is required to close the position loop on the system.
Environmental Considerations:
The stage is a precision device with sensitive components, it should not be mounted in an environment that is wet or excessively dirty. The optical encoder scale
is open and it should be kept free of debris in order to operate properly. The stationary magnetic assembly is highly magnetic, it should not be placed in an area
where loose steel particles can be drawn towards the open magnetic surfaces.
The stage must not be mounted in an environment with high ambient temperatures.
Mounting:
The stage should be mounted to flat and stiff surface. Counter bored thru holes are present in the stage to allow for the mounting of the stage to the customers
system. The moving table assembly has threaded holes on the top surface for attaching the payload. The stage may be mounted in any orientation. When
mounting the stage with the table moving vertical, it should be noted that the stage will be required to generate additional force due to gravity and that the stage
will slide down to the bottom hard stop when power fails.
