See Product Details

H2W Technologies, Inc.'s Voice Coil Positioning Stage is a compact, small footprint positioning stage ideal for closed loop positioning applications with a short stroke where intricate position, velocity, and acceleration control is necessary. Their compact size allows them to fit into small spaces and they have very low electrical and mechanical time constants. The low moving mass allows for high accelerations of light payloads.

The ironless core coil assembly has no magnetic attractive force to the stationary magnet assembly, which reduces the load on the bearing system, which increases the life of the bearing. There are no magnetic drag forces (hysteresis), which allows for higher accelerations.

Download Detailed Datasheet

SPECIFICATIONS:

• Travel: 0.04 - 2 inches
• Acceleration: 0.1 - 20 G's
• Continuous Force: 0.25 - 100 lbs
• Peak Force: 0.75 - 300 lbs
• Resolution: 0.1 - 12 micron

Advantages:

• Small Size, High Force to Weight Ratio
• High Accelerations
• No Cogging or Commutation
• Custom Designs with Quick Turnaround Times
• High Flux Density Neodymium Magnets are Used
• Low Cost Economical Solution

Applications:

• Mirror Tilt and Focusing
• Z Axis for Pick and Place Equipment
• Medical Diagnostic Probes and Laser Beam Steering
• Vision Inspection
• Miniature Position Control
• Clean room

Required Electronics: Because of the very low inductance of the actuator, a DC linear servo amplifier is required to provide power to the actuator. If a PWM amplifier is used, it is recommended to have a switching frequency of 50kHz or higher. A linear power supply is also recommended for better performance and noise reduction.

Environmental Considerations: The stage is a precision device with sensitive components and 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 magnetic encoder scale should be kept away from any ferrous or magnetic materials. The magnetic assembly should not be placed in an area where loose steel particles can be drawn into the magnetic gap. The stage should not be mounted in an environment with ambient temperatures >50ºC.

Mounting:
The stage should be mounted to a flat and stiff surface. Counter bored thru holes are present in the base to allow for the mounting of the stage to the customers system. The moving slide assembly has threaded holes for attaching the payload. Custom mounting holes are available if the customer desires so. The stage may be mounted in any orientation. When mounting the stage with the slide moving vertically, it should be noted that the stage will be required to generate additional force due to gravity and that the moving slide will drop down to the bottom hard stop when power fails.

Maintenance: The ball bearing guides in the stage should be periodically lubricated with the manufacturers recommended grease. The open encoder scale should be wiped down occasionally to clear it of any dust or particles to ensure trouble free operation.

About H2W:

We offer a complete line of linear electric motors including; single and dual axis linear steppers, DC brush and brushless linear motors, voice coil actuators, and AC induction motors.

New products are constantly being developed, so please check our web site www.h2wtech.com for the latest developments and new product offerings.

Please click on the links to the right or contact us today for more information.