Linear Motion – Miniature Voice Coil Actuators from H2W Technologies, Inc.

Linear Motion Miniature Voice Coil Actuators

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Santa Clarita, CA — Linear Motion Actuators — H2W Technologies offers miniature versions of both our moving coil and moving magnet voice coil actuators. Additionally, we offer custom designed solutions to meet your application specifications.

H2W has built its smallest moving magnet voice coil actuator (NCM01-04-001-2IB)to date, with an outside diameter of 0.40 in [10 mm] and a length of 0.735 in [18.8 mm]. It has a stroke of 0.10 in [2.5 mm] and generates a continuous force of 0.10 lbs [0.45 N] and a peak force of 0.30 lbs [1.35 N]. It weighs just 0.20 ounces [5.7 grams]. This actuator utilizes a hardened shaft and sliding contact bushing to ensure long life, and is ideal for oscillatory motion. The compact design allows the actuator to be used in a number of handheld applications. Moving magnet voice coil actuators have built-in bearings so there is no need for the customer to add mass or complexity to their motion system to integrate a bearing, and there are no moving leads to worry about cable management.

Our smallest moving coil voice coil actuator (NCC01-04-001-1X) has an outside diameter of 0.44 in [11.1 mm] and a length of 0.36 in [9 mm]. It has a stroke of 0.13 in [3.2 mm] and generates a continuous force of 0.06 lbs [0.27 N] and a peak force of 0.18 lbs [0.8 N]. It weighs just 0.20 ounces [5.7 grams]. The bobbin has been constructed of plastic to prevent any damping forces that a metallic bobbin would create. The compact design allows the actuator to be used in a number of handheld applications.

About H2W Technologies, Inc

H2W Technologies, Inc. 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 contact Mark Wilson at H2W Technologies, 26380 Ferry Ct, Santa Clarita, CA 91350; Tel: 888-702-0540, Fax: 661-251-2067, E-Mail: info@h2wtech.com or visit the website athttp://www.h2wtech.com

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Linear Motion – High Speed, High Precision, Dual Axis Positioning Stage from H2W Tech

H2W Technologies High Speed Dual Axis LSS Positioning System

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Santa Clarita, CA —– Linear Motion Control – The high speed, high precision LSS-012-12-060-XY-01A-M dual axis, low profile linear stepper positioning stage generates a force of 6.0 lbs [26.7 N] with a total stroke length of 12.5 in. [318mm] for each axis. This compact, low profile dual axis stage measures 17.0 in. x 19.0 in. [432 mm x 483 mm] and is just 4.2 in. [108 mm] high. Featuring repeatability of ±0.0004. in [±10 microns] and accuracy of ±0.0007 in/ft [±58 micron/meter], this dual axis linear stage is ideal for: Assembly, testing, metrology, scanning, laser cutting, and plotting in industrial, laboratory, and medical applications.

This XY axis linear stage also features high speed and high acceleration, and can be mounted horizontally or vertically. For precision closed loop operation, H2W integrates a 1.0-micron absolute linear encoder and linear stepper motor, running it as a 2-phase brushless linear motor. Additionally, using absolute encoders eliminates the need for the stages to return to a home position.

Other features include: High-flex power cables in a cable carrier with room for additional cables. This stage is available with a complete plug-and-play electronics package and custom mounting holes in the base and top stage for easy integration into new or existing applications.

About H2W Technologies, Inc

H2W Technologies, Inc. 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.

See Article: http://www.h2wtech.com/article/dual-axis-closed-loop-linear-stepper-stage

See Video at Youtube: https://youtu.be/kEOt0BDd7hE

See Product: http://www.h2wtech.com/product/linear-stepper-stages/LSS-012-12-060-XY-01A-M”

For additional information contact Mark Wilson at H2W Technologies, 26380 Ferry Ct, Santa Clarita, CA 91350; Tel: 888-702-0540, Fax: 661-251-2067, E-Mail: info@h2wtech.com or visit the website at http://www.h2wtech.com

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Linear Motion Control – Linear Motors: How Do They Work?

What is a Linear Motor?

 

 

 

Linear Motion – Voice Coil Actuators vs. Solenoids: What is the difference?

Linear Motion – White Paper

The question of whether to use voice coil actuators or solenoids for small displacement motion control applications comes up often.  This article explains the key differences between each product and why you might choose one over the other for your applicationA non-commutated DC linear actuator, typically referred to as a voice coil, is capable of a displacement in excess of 5 inches.  In addition, voice coil actuators, can move bi-directionally, and has a constant force over the stroke and can be used for closed loop position and force applications.

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A solenoid can generate high forces at very short strokes, however it requires a spring return because they are operated unidirectional and the force output declines rapidly through the total displacement, and therefore are normally used only for short strokes, not typically longer than 0.5 in.  The typical application for a solenoid is the simple opening or closing of a switch or valve, and are not typically used for force or position control applications.

A voice coil generates a force based on an interaction of a current carrying conductor in a permanent magnetic field.

H2W-Voice Coil Illustration

A solenoid generates force based on an electromagnetic field that is created by a current carrying conductor.

H2W-Solenoid-Illustration

What is a Voice Coil Actuator?

Voice coil actuators or non-commutated DC linear actuators consist of a permanent magnetic field assembly (permanent magnets and ferrous steel) and a coil assembly.  The current flowing through the coil assembly interacts with the permanent magnetic field and generates a force vector perpendicular to the direction of the current.  The force vector can be reversed by changing the polarity of current flowing through the coil.

The force generated by the voice coil is proportional to the cross product of the current flowing through the coil and the magnetic flux in the permanent magnetic field, as dictated by Lorentz’ force equation.  Either the coil assembly or permanent magnetic field assembly can be used as the moving member in a voice coil actuator.

The force generated is relatively constant throughout the stroke of the actuator, with minor dips at the beginning and end of the travel length.

Voice coil actuators are typically used in focusing applications, oscillatory systems, mirror tilting, and miniature position control.

What is a Solenoid?

Solenoids consist of a coil that is contained in a ferrous steel housing and a movable steel slug or washer.  An electromagnetic field is generated by current being applied to the coil.  The magnetic field intensity determines the amount of force that can be generated by the solenoid.  When the power is turned off, the force drops to zero and the spring returns it to its extended position.

The forces are initially high, but as the stroke increases the force decreases.

Solenoids are typically used to open latches or open or close valves, and are either used to apply a holding or latching force.

Comparison

  Voice Coil Actuator Solenoid
Force Low to medium High
Stroke 5 inches maximum ¼ inch maximum
Constant Force Yes No
Reversible Yes No
Position/Force Control Yes No
Cost Moderate Low

Should I select a Voice Coil Actuator or a Solenoid?

If your application simply requires opening or closing a valve a solenoid might be an option, however they have limitations when it comes to force linearity and stroke length.

Due to the fact that voice coil actuators typically cost more than an off-the-shelf solenoid, many customers try and use a solenoid when a voice coil actuator is the more appropriate solution.  Some applications require a constant force throughout the travel length, and in these situations a solenoid is insufficient due to the diminished force through the travel, while a voice coil actuator provides constant force.  This is particularly important in oscillatory systems.  Another advantage that the voice coil provides is force control, without a feedback device, because the force output (at any position in the stroke) is directly proportional to the current input.

This type of actuation lends itself to generally a higher force density, thus achieving higher strokes and forces in a smaller package size to the solenoid counterparts.

H2W Technologies, Inc. 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 contact Mark Wilson at H2W Technologies, 26380 Ferry Ct, Santa Clarita, CA 91350; Tel: 888-702-0540, Fax: 661-251-2067, E-Mail:info@h2wtech.com or visit the website at http://www.h2wtech.com

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Linear Motion – H2W Component Selection Calculator!

H2W-Calculator-Laptop-4x5-72-shadowSanta Clarita, CA — Linear Motion Calculator– H2W understands that there can be confusion when it comes to trying to determine how much force and acceleration is necessary to achieve your desired motion profile.  We have taken the guesswork out of making that determination and placed a number of calculators on our webpage for your use, as you determine which of our vast product offerings would be best suited for your application.  We understand that there are a number of options when it comes to motion profiles; therefore we have included calculators for basic triangular motion profiles, trapezoidal motion profiles, sinusoidal motion profiles, as well as other calculators to determine the amount of force required if your profile does not correspond to any single motion profile mentioned previously.  Additionally, H2W has sought to demystify force at specific duty cycles by providing the necessary calculators to determine what your actual duty cycle would be as well as  determining how much force our motors will generate at a given duty cycle.

To Use the H2W Calculator go to –

http://www.h2wtech.com/page/calculator

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H2W Technologies, Inc. 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 contact Mark Wilson at H2W Technologies, 26380 Ferry Ct, Santa Clarita, CA 91350; Tel: 888-702-0540, Fax: 661-251-2067, E-Mail:info@h2wtech.com or visit the website at http://www.h2wtech.com

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Visit our Website
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