U-628 PILine® Rotation Stage

Stage with ultrasonic piezomotor and central aperture

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

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 is 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 is 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.

Direct position measurement with incremental encoder

Noncontact optical encoders measure the actual position directly at the motion platform with the greatest accuracy so that nonlinearity, mechanical play or elastic deformation have no influence on position measuring.

Valid patents

US patent no. 6,765,335B2

European patent no. 1267425B1

Fields of application

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

Specifications

pdf
pdf

Datasheet U-628

2016-04-08
2016-04-08
pdf - 826 KB
pdf - 821 KB

Drawings / Images

U-624, U-628 and U-622 PILine® rotation stages
U-628, dimensions in mm

Downloads

Datasheet

pdf
pdf

Datasheet U-628

2016-04-08
2016-04-08
pdf - 826 KB
pdf - 821 KB

Documentation

pdf

Short Instructions MP121EK

M-66x, M-68x, U-521, U-62x, U-651 PILine® Stages
4.3.0 2017-06-23
pdf - 709 KB
pdf
pdf

User Manual MP112

U-628 PILine® Precision Rotation Stage
2015-08-21
2015-08-21
pdf - 765 KB
pdf - 736 KB

3-D Models

zip

U-628.03 STEP

English
zip - 1 MB