Importance

Loading Importance Indicators...

Abstract

The position-reading system for machine-tool parts rotatable through 360.degree. renders possible accurate position determination by using a scale although there is present a measuring gap. This is achieved by the use of two reading units angularly offset at a predetermined angle with respect to one another and by the use of an indicating unit which contains evalution and switch-over means. These evaluation and switch-over means evalute the output signals of the two reading units and switch, on the one hand, one reading unit, upon passage thereat of the measuring gap, to become position-reading inactive and, on the other hand, the other reading unit to become position-reading active, such other reading unit taking over the corresponding momentary position value or reading.

Loading the Abstract Image...

First Claim