Method of producing a rotary encoder

Details Method of producing a rotary encoder Method of producing a rotary encoder

2011-06-14

2011-06-14

Kim, Paul D (Department: 3729)

Metal working

Method of mechanical manufacture

Electrical device making

C029S428000, C029S593000, C029S602100, C033S292000, C033S534000, C033S706000, C033S707000, C250S231120, C250S231160, C250S230000, C250S232000, C250S233000, C318S602000, C318S638000, C318S651000

Reexamination Certificate

active

07958620

ABSTRACT:
A method of determining the eccentricity of an encoder scale member of a rotary encoder includes taking an encoder scale blank having a geometric center and mounting the encoder scale blank centered about a second center. A scale can then be produced on the encoder scale blank thereby forming an encoder scale member. The scale of the encoder scale member is centered about the second center. Any eccentricity between the geometric center and the second center is measured by, for example, measuring any change in the apparent radius of the encoder scale member. The encoder scale member may then be mounted in a working location wherein it is rotated about a third axis. The eccentricity when mounted in the working location may be matched to that measured during manufacture thereof and/or the eccentricity errors arising from both manufacture and mounting of the encoder scale member may be determined.

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