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We propose a new 4-DOF high-precision positioner employing voice coil motors and flexure guides. Millimeter motion range and nano level resolution were achieved simultaneously, utilizing the frictionless characteristic of the voice coil motors and the flexures. The mathematical model describing static and dynamic behaviors of the positioner was ...

In addition to the sled positioner, the optical pickup head always contains two miniature electromagnetic voice coil actuators. One controls the laser beam's focus and the other is the fine-tracking positioner. Both have springs so they will return to center when current is removed.
Contact us. Micromech Ltd 5-8 Chilford Court, Rayne Rd, Braintree, Essex, CM7 2QS Tel: 01376 333333 Fax: 01376 551849
•A voice coil is a linear actuator, that moves a mass along a line. •To be precise, it pushes and pulls a mass wherever it is along a line. •But a voice coil doesn’t primarily move things, it is a consequence of the force it applies. •It is sometimes said that voice coils are intended for fast
•A voice coil is a linear actuator, that moves a mass along a line. •To be precise, it pushes and pulls a mass wherever it is along a line. •But a voice coil doesn't primarily move things, it is a consequence of the force it applies. •It is sometimes said that voice coils are intended for fast
Thanks to their low weight and friction-free drive principle, voice coil drives are particularly suitable for applications that require high dynamics and high velocities at limited travel ranges. High scan frequencies and precision positioning are also possible with these drives, because they are free of the effects of hysteresis.
The Best in Valves, Actuators and Positioners ... LAS13 linear voice coil actuator has an actuator with an integrated position sensor in a compact package. The series includes four new models with varying levels of sophistication for complete flexibility and easy application. All models offer 6 mm of total stroke and 15.5 N peak force in a ...
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  • We propose a new 4-DOF high-precision positioner employing voice coil motors and flexure guides. Millimeter motion range and nano level resolution were achieved simultaneously, utilizing the frictionless characteristic of the voice coil motors and the flexures. The mathematical model describing static and dynamic behaviors of the positioner was ...
  • - The two main types of voice coil positioner mechanisms are . Linear Voice Coil Actuators. Rotary Voice Actuators . Spindle Motor The spindle motor spins the platters connected to spindle. The motor is directly connected to the spindle of platters. These platters revolve at exactly 3600 rpm to 1500 rpm.
  • A voice coil actuator alone simply produces a force that is proportional to the current passing through the coil (with a bit of friction in the bearings). Ideally that force is independent of the position of the shaft, but in practice it will vary a bit throughout the stroke.
  • A head actuator assembly includes a coarse positioner base assembly that is mounted on a guide shaft and an anti-rotation shaft and provides increased structural rigidity due to a four-point support and spring loading of the coarse positioner base against the anti-rotation shaft. A two-part head-carriage and voice coil holder system permits different materials to be used for the head-carriage ...
  • A voice coil actuator alone simply produces a force that is proportional to the current passing through the coil (with a bit of friction in the bearings). Ideally that force is independent of the position of the shaft, but in practice it will vary a bit throughout the stroke.

The model 8000 incorporates a large area 12" X 6" x-y range linear motor actuated positioner carrying a dual axes voice coil driven bond head with a rectilinear z-stroke of 800 mils. Automated gold wire bonder

May 31, 2019 · In the precision motion industry, the goal is to achieve certain performance specifications for an applications movement profile. The movement profile can range from simple to complex, but is always based on at least one, if not all of the six degrees of freedom.
The "voice coil" motor (VCM) comprises a solenoid like those used to drive an audio speaker. In disk drives, magnetic read/write heads are commonly carried by a carriage driven by a VC motor including a mobile electric coil positioned in a magnetic field and fed by a current of selected intensity and polarity. Thorlabs' voice coil actuators are designed for use in applications requiring positioning with high speed or acceleration. These linear actuators use a bobbin and magnet assembly to provide linear force without contact between the moving and fixed world. The voice coil converts electrical signals di

Manufactures of linear motors, positioning stages, and fully integrated single/multi-axis positioning systems including Voice Coil Linear Actuators, Linear Stepper Motor, Linear Induction Motor.

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Thanks to their low weight and friction-free drive principle, voice coil drives are particularly suitable for applications that require high dynamics and high velocities at limited travel ranges. High scan frequencies and precision positioning are also possible with these drives, because they are free of the effects of hysteresis.