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U-628 PILine® Rotation Stage

Miniature Stage with Ultrasonic Piezo Motor and Central Opening

Compact: Edge length 50 mm, height 19 mm
Positions loads quickly and with precision: Velocity to 720 °/s, minimum
incremental motion to 51 µrad
Unlimited rotation range >360°
Drive torque 25 mNm
Self-locking when switched off: Saves energy and reduces generation of heat
Central aperture for more fields of application

U-628, dimensions in mm. Note that a comma is used in the drawings instead of a decimal point.

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Precision-class rotation stage

PILine® stages are particularly suitable for applications that require fast precision positioning. When switched off, the self-locking drive holds the position of the stage mechanically stable. Energy consumption and heat generation are therefore considerably reduced. Applications with a low duty cycle that are battery-powered or heat-sensitive benefit from these characteristics. The position of the axis is measured by an encoder and an optical reference switch allows reliable repeatable motion. The piezomotor drive principle and its electrical operation are inexpensive and can be customized.

PILine® ultrasonic piezomotor

An integral part of a PILine® ultrasonic piezomotor is a piezo actuator that is preloaded against a movable, guided runner via a coupling element. The piezoceramic actuator is excited to ultrasonic oscillation by a high-frequency AC voltage between 100 and 200 kHz. Deformation of the actuator leads to periodic diagonal motion of the coupling element relative to the runner. The feed created is a few nanometers per cycle; the high frequencies lead to the high velocities. Preloading the piezoceramic actuator against the runner ensures self-locking of the drive when at rest and switched off.

Highly accurate position measuring with incremental encoder

Noncontact optical encoders measure the position directly at the platform with the greatest accuracy. Nonlinearity, mechanical play, or elastic deformation have no influence on the measurement.

Application fields

Micromanipulation, automation, biotechnology, sample manipulation, sample positioning, applications with limited space, optical metrology, vacuum applications to 10-6 hPa (optional).

3D Models

U-628.03 3-D model

Version / Date

zip - 1 MB

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Datasheet

Datasheet U-628

Version / Date

2023-02-07
pdf - 407 KB

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Documentation

Short Instructions MP121EK

PILine® Positioners: M-67x, M-68x, U-52x, U-62x, U-651, U-7xx

Version / Date

5.3.0 02/2023
pdf - 2 MB

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Documentation

User Manual MP112

U-628 PILine® Precision Rotation Stage

Version / Date

1.4.0 2020-12-02
pdf - 1 MB

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U-628.03

PILine® rotation stage; PILine® piezo motor, performance class 1; >360 ° rotational angle; 5 N load capacity; 720 °/s maximum angular velocity; incremental angle measuring system, 17 µrad sensor resolution; 1.5 m cable length

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