|
|
||
H2W Technologies - Voice Coil Positioning Stages
|
|
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 acceleration.
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.
H2W Technologies is dedicated to the design and manufacture of linear and rotary motion products that are used in the motion control industry. The complete line of linear electric motors includes: single and dual axis linear steppers, DC brush and brushless linear motors, voice coil actuators, and AC induction motors. Also offered is a complete line of ball screw, lead screw and belt driven positioning stages.
Other motion control products include: limited angle torque motors for compact, limited angular excursion rotary servo applications, 3 phase brushless rotary servo motors with matching digital servo amplifiers and permanent magnet linear brakes for fail-safe, zero power braking for baggage handling and people moving applications as well as amusement park rides.
With over 75 years combined experience in the linear and rotary motion field, the H2W Technologies team of engineers offers the optimal solution to the most demanding motion control requirements.
For additional information please contact Mark Wilson at H2W Technologies, 26470 Ruether Avenue #102, Santa Clarita, CA 91350; Tel: 888-702-0540, Fax: 661-251-2067, E-Mail: info@h2wtech.com or visit the website at www.h2wtech.com.
