Category Archives: Torquers

Motion Control – Long Travel and High Torque Rotary Voice Coil Actuators from H2W Technologies!

Motion Control – High Torque Rotary Voice Coil Actuators

motion control - rotary voice coil torque motor

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Santa Clarita, CA — Motion Control – H2W Technologies has developed several high torque rotary voice coil actuators, otherwise known as a limited angle torque motors or LATs. The model TWR-034-800-1RC was designed to allow for a relatively low moving mass and inertia, as well as a long rotary stroke of 34 degrees [0.59 radians] on a 11.4” [290 mm] arm, which equates to a travel of 6.75 inches [171.5 mm] which is long travel for this style of actuator, which typically restrained to an equivalent linear travel of 2 inches [50.8 mm]. This rotary voice coil actuator can generate a continuous torque of 1400 in-oz [9.8 N-m] and a peak torque of 4200 in-oz [29 N-m] at a duty cycle of 10% (i.e. 1 second on, and 9 seconds off) in each coil on a 11.4 inch [290 mm] rotation arm.  The TWR-034-800-1RC has a total angular displacement of  34 degrees [0.59 radians] and a motor constant of 275 in-oz/sqrt(watt) [1.92 N-m/sqrt(watt)].

The Voice coil motor requires 1.7 amps of continuous current per coil and 5.1 amps of peak current per coil to generate the specified forces.  The actuator fits in and envelope of 10.26 in [260.5 mm] x 3.01 in[76.4 mm] x 3.39 in [86 mm].  The moving coil design ensures a hysteresis free movement as the coil is wet wound and self-supported, and the non-commutated coil allows for ripple-free motion and no cogging.  The voice coil actuator has been designed with mounting provisions in the magnet and coil assemblies.  This allows for the integration of a bearing system to maintain the clearances between the coil and permanent magnetic field assemblies. The rotary voice coil actuator is ideal for applications requiring high torque and high- speed applications. Examples of such applications are driving a gimbal axis in scanning applications as well as providing stabilizing torques for image stabilization. More examples of H2W’s Rotary Voice Coils are available on our website: https://www.h2wtech.com/category/rotary-voicecoil-actuators

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 at http://www.h2wtech.com


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Motion Control – QTR Series Torque Motors by Tecnotion Are Available from Electromate!

motion control - torque motors

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Vaughan, Ontario, Canada — Motion Control Components — Tecnotion, long known as “The Linear Motor Company” entered the rotary torque motor market last year with a new design for torque motors. By new design, we mean the magnetic design is optimized for maximum flux density and copper fill to provide very high torque to volume ratios.

Manufactured in volume, these new Tecnotion Torque motors feature encapsulated windings and include two types of thermistors as standard features at very competitive pricing. Tecnotion offers motor sizes from 68mm to 160 mm diameters, to date, these motors pack serious power and will work with any servo drives in the market, or of your design.

Torque Motors from Tecnotion are extremely compact, provide an extremely stiff drive train, eliminate the need for time-consuming mounting procedures, are virtually maintenance free and can be integrated directly into the machine structure, while the spacious open inner diameter enables wire and cable feedthrough. To top things off the entire series comes with completely sealed stators and integrated temperature protection and measurement sensors.

With continuous torque ratings ranging from 0.27 Nm to 63.5 Nm and speed ranges from 190 rpm to 6918 rpm, these motors can play a pivotal role in increasing the availability and cost-effectiveness of many different applications in industries like:

  • Semiconductor
  • Printing
  • Robotics
  • Machine tooling

CLICK HERE for more information on the QTR Series Torque Motors by Tecnotion.

About Electromate:

Electromate’s Core Purpose is to help Manufacturers build better machines using differentiated automation technology. They specialize in Robotic and Mechatronic Solutions for the Industrial Automation marketplace. Respected by customers as a premiere source for High Performance Automation and Motion Control Components & Systems, Electromate® specializes in AC & DC Servo and Stepper Motors & Drives, Motion & Automation Controllers, Positioning Systems & Actuators, Feedback Devices, Gearing Products and HMI’s & Operator Displays, all supported via extensive product selection, just-in-timedelivery, dedicated customer service and technical engineering support.

More on Electromate can be found at

Website: http://www.electromate.com

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Blog: https://electromate.wordpress.com/

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For further information on this new product or others in our extensive product portfolio, call 1-877-SERVO99 (737-8699) or e-mail Warren Osak at sales@electromate.com or visit Electromate at: www.electromate.com

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Motion Control – Frameless Brushless Torque Motor from H2W Technologies, Inc.

Motion Control Component - Franmess Bruchless Torque Motor ARC Segment

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Santa Clarita, CA —– Linear Motion Control Components – H2W has developed an unhoused arc segmented frameless brushless torque motor (TWR-070-410-1150-3PH) with low inertia moving coil assembly for high angular acceleration applications. The rotary 3-phase brushless motor, also known as a rotary servo motor, is a direct drive motor that is ideal for limited or unlimited, closed loop servo, rotary motion applications. It can generate a continuous/peak torque of 480 in-lbs [53 Nm]/1440 in-lbs [159 Nm]. It has been designed to have a 70° rotation and operate on a 20” (500 mm) radius, but additional modular magnet tracks (33° each) can be added to increase angular displacement. It is capable of very precise position, velocity, and acceleration control when coupled with a rotary encoder for position feedback

The vacuum encapsulated moving motor coil assembly moves through a gap in the long U shaped magnet assembly. A customer supplied bearing system is required to guide the moving coil assembly and to maintain a .050″ [1.25 mm] clearance between the magnet and the coil assembly. There is no attractive force between the motor coil and the magnet assembly. The 3-phase motor coil assembly can be commutated trapezoidally using integral hall effects or commutated sinusoidally using software commutation in conjunction with the appropriate amplifier, motion controller and encoder feedback. The power to the motor, from a brushless servo amplifier, is supplied via a high-flex motor power cable. Motors can be designed to fit customer specific application requirements.

Features:

  • Zero cogging
  • High speed and accelerations of light loads
  • Low inertia
  • Multiple motors coils inside a single magnet assembly
  • Uses standard 3-phase brushless amplifier

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 Drawing PDF: CLICK HERE

See Product: CLICK HERE

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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Motion Control Technology – Have You Considered a “Torquer?”

Santa Clarita, CA – Motion Control Technology – The Limited Angle Torque Motors or “Torquers,” technology explained: A current carrying conductor placed in a magnetic field will have a force (or torque) exerted on it. This force is proportional to the direction and magnitude of the current and the flux density field. Since the permanent magnet flux density field is fixed, the direction of the rotation depends on the polarity of input current and the amount of torque that is produced is directly proportional to the magnitude of the input current.

A DC linear servo amplifier is required to provide power to the torquer.

The torquers are typically supplied unhoused without bearings or a shaft, but can be supplied housed if required.

Coupling the torquer to your bearing system and a rotary encoder or other feedback device yields a system that is capable of intricate angular position, velocity, and acceleration control.

Low moving inertia of the rotor assembly allows for high angular acceleration of the payload.

The small length to diameter ratio allows the torquers to fit in spaces where conventional rotary brush and brushless DC motors will not.

It should be noted that, angular excursions of greater than 180º (up to 360º) can be achieved by modifying the winding of the stator assembly. In this case the coil assembly will have 4 leads and it will have to be commutated.

See below for a typical Torque vs. Displacement curve for a 4 pole LAT:

Advantages:

 

  • No Torque Ripple
  • High Angular Acceleration
  • No Commutation
  • Brushless
  • Low Profile

 

Applications:

 

  • Aerospace
  • Semiconductor
  • Medical
  • Military<

 


H2W Technologies offers 2 distinct types of limited angle torque motors.

1. MR Series Limited Angle Torque Motor – is a toroidally wound iron core stator with a 2 ,4 or 6 pole permanent magnet rotor. This torque motor can provide angular excursions up to 180º. It is typically supplied without bearings, shaft or housing to allow for direct mounting to customer supplied bearing system.

Linear Motion Technology - Torque Motors or Torquers from H2W
The MR Series is comprised of a toroidally wound, stationary, coil assembly with a multi-pole permanent magnet rotor.

Rotor: The rare earth permanent magnet rotor always has an even number of poles, with any where from 2 to 6 poles. The maximum angular excursion with a 2-pole rotor is 180º, with a 4 pole rotor is 90º, and with a 6 pole rotor is 60º. The torque will drop off to zero at the extreme ends of the travel. For constant torque over the required rotation, the angular excursion will always be less than numbers mentioned above.

The rotor assembly is installed within the ID of the stator assembly. There is a magnetic attractive force between the stator and the rotor. When the stator is perfectly concentric within the rotor, the radial magnetic attractive forces are equal and opposite and they cancel each other out.

Stator: The stator is comprised of a “soft”magnetic steel toroid that is electrically insulated. Multiple sections of insulated copper magnet wire are toroidally wound on the stator toroid. Only 2 leads are brought out from the stator assembly.

The rotor assembly is installed within the ID of the stator assembly. There is a magnetic attractive force between the stator and the rotor. When the stator is perfectly concentric within the rotor, the radial magnetic attractive forces are equal and opposite and they cancel each other out.

2. WR Series Limited Angle Torque Motor – is an arc segmented multipole permanent magnet stator with a low inertia copper magnet wire rotor. Angular excursions are typically less than 90º. This torquer is supplied with out a shaft or bearing.

Linear Motion Technology - Torque Motors from H2W
The WR Series is comprised of a stationary, arc segmented, multipole permanent magnet stator assembly with a low inertia wound wire rotor.

Rotor: The rotor is made up of a single coil of bondable copper magnet wire. The coil is wound and preformed into the desired shape. It is held together with the bonding agents in the wire. It can be encapsulated with aluminum or plastic brackets in order to provide a means for mounting the rotor to the bearing system and payload. The maximum angular excursion is less than 90º.

Stator: The stationary stator assembly consists of multipole permanent magnets that are bonded to steel plates. The 2 opposing steel plates are spaced apart to provide a gap using end plates. The coil rotor assembly moves angularly within this gap. There is no magnetic attractive force between the stator and the rotor.

The WR Series Torquers are available in 2 configurations.

The low profile (Type L) configuration has a smaller overall height which allows it to fit in a more compact space, but has less angular rotation for a given stator arc segment.

The second configuration (Type S) has a larger overall height but has typically twice the angular rotation per given stator arc segment when compared to the Type L torquer.

    • No Torque Ripple
    • High Angular Acceleration
    • No Commutation
    • Brushless
    • Low Profile

 

About H2W

H2W designs and manufactures a wide range of linear motors, positioning stages, and fully integrated single and multi-axis positioning systems. We will be happy to assist you with a custom design if you do not find a standard product that meets your needs.

Our Products

Voice Coil Linear Actuators, Single Axis Linear Stepper Motors, Dual Axis Linear Stepper Motors, AC Linear Induction Motors, DC Linear Brushless Motors, DC Linear Brush Motors, Limited Angle Torque Motors, Permanent Magnet Brakes, Motion Control System Integration, Voice Coil Positioning Stages, Linear Stepper Stages, Single Rail Stages, Dual Rail Stages, Air Bearing Stages, Cross Roller Stages, Belt Stages, Lead Screw / Ball Screw Stages, Multi-Axis Gantry Stages

Industries Served

Semiconductor, Medical, Military, Aerospace, Material Handling, People Moving, Amusement Park Rides, Packaging, Automotive, and Clean Room.

 

26470 Ruther Ave #102 | Santa Clarita, CA 91350
661-251-2081 | 888-702-0540 Toll Free | info@h2wtech.com | www.h2wtech.com

Motion Control – Limited Angle Torque Motors: High Acceleration, Ripple Free Motion!

H2W Torquers

H2W Technologies

Santa Clarita, CA – Limited Angle Torque Motors or “Torquers” as they are commonly referred to are the motion control rotary actuator of choice when high torque, high acceleration, extremely smooth motion, high reliability, and high precision are required. H2W Technologies manufacturers “Torquers” that have applications from below sea level to outer space. These single phase, brushless, low profile motors, vacuum compatible to 10^5 torr, are ideal for: Operating valves, control surfaces on submersible watercraft, aerospace fin actuation, precision ball screw rotation, and positioning laser reflecting mirrors.

Standard and custom design “Torquers” manufactured by H2W Technologies include, miniature 1.4 Ncm continuous, torque 5.2 Ncm peak torque (2 oz-in., 6 oz/in.) motors and powerful 706 Ncm continuous torque, 2118 5.2 Ncm peak (1000 oz-in. continuous torque, 3000 oz-in. peak) motors.

Available in kit and housed styles, H2W Technologies limited angle torque motors come in two distinct series to meet diverse application requirements. The MR series of limited angle torque motors feature a toroidally wound iron core stator with 2, 4, or 6 pole permanent magnet rotors. This series provides angular excursions (rotation) to 180O and typically is supplied in kit form to be directly mounted to the drive shaft of an application. By modifying the stator windings angular excursions greater than 180O can be realized.

The WR series is an arc segmented multi-pole permanent magnet stator motor with a low inertia copper magnet wire rotor for excursions less than 90O. Additionally the WR series of “Torquers” are available in standard and low profile versions

Torquer options are kit motors, and housed motors which incorporate: Bearings, shafts, housings, provisions for encoders, and custom mountings. A matching Linear servo amplifier and complete plug-and-play systems are available.

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: 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, 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 http://www.h2wtech.com