Aperture Drive

782409:013.26

Demanding series production for a medical device

The task was to develop a motion unit for a computer tomography scanner which moves tungsten collimators during X-ray source rotation so that the X-ray beam can be adjusted to the minimum radiation dose required. The assembly itself is continuously moved in a circular path around the patient during use. A special challenge was the high acceleration caused by the rotation on a large diameter transverse to the direction of movement. This additional load requires a particularly stable construction with minimal potential for error.

Highest stability and reliability

Since this is used in a durable medical device, the requirements for functional safety and reliability are very high. The positioning system has been tested for three million application cycles and has proven this claim with statistical certainty in an endurance test.

Model 782409:013.26

X

Travel

[mm]

25

Repeatability unidirectional

[µm]

± 1.4

Repeatability bidirectional

[µm]

± 2.5

Max. speed

[mm/s]

50

Motor

SM

Drive

 

Ball screw

Feedback

Encoder


Contact Person for Custom Linear Modules

Dipl.-Ing. Elger Matthes

Phone: +49 (0) 351 88585-0

elger.matthes(at)steinmeyer.com