Optical disc shaft encoder for machine control

Details Optical disc shaft encoder for machine control Optical disc shaft encoder for machine control

G - Physics

08

C

354/79, 340/136.

G08C 21/00 (2006.01) H03M 1/00 (2006.01)

Patent

CA 1166713

"ENCODER FOR MACHINE CONTROL" Abstract of the Disclosure An encoder arrangement for machines having a rotating worm shaft which controls the movement of a work- ing part and which has an optical disc on the shaft whose movement is photoelectrically sensed and interpreted by a controller to govern drive mechanism for moving the part in accordance with a program. The disc and photoelectric sensing means are contained in a dust-proof casing mounted on the machine and surrounding the shaft. The disc is in the form of companion segments which are clamped to each other and about the shaft. The casing is in the form of companion shells which are mounted on the machine casing and are connected to each other about the shaft. A pre- ferred use of the encoder arrangement is with paper cutting machines of the type having a backstop movable along a worm shaft.

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