US Patent: 3,917,930 - Method and Apparatus for Adaptively Positioning a Machine Element


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US Patent: 3,917,930

Method and Apparatus for Adaptively Positioning a Machine Element

Patentees:

James Andrew Davey (exact or similar names) - Villa Hills, Kenton County, KY

Charles B. Perry (exact or similar names) - Cincinnati, Hamilton County, OH

Harvey William Rohmiller (exact or similar names) - Covington, Kenton County, KY

USPTO Classifications:

318/561, 318/569, 318/632, 700/193, 700/56, 700/71

Tool Categories:

metalworking machines : machine tool controls

Assignees:

Cincinnati Milacron, Inc. - Cincinnati, Hamilton County, OH

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	Nov. 25, 1974
Granted:	Nov. 04, 1975

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Cincinnati Milacron, Inc.

Description:

Abstract:

A method and apparatus is disclosed for use with a drive system iteratively moving a machine element through a positioning cycle in response to input signals defining each of the positions in the cycle. During an initial application of each of the input signals, compensation values corresponding to the input signals are produced and stored. Each compensation value represents the difference between the desired position as defined by the input signal and the actual final position as determined by a measuring circuit. During a subsequent application of each of the input signals, they are modified by a corresponding compensation value thereby causing the actual final position of the machine element to more closely coincide with the desired position.