US Patent: 3,656,124 - Linear and Circular Interpolation Contouring Control Using Repeated Computation


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US Patent: 3,656,124

Linear and Circular Interpolation Contouring Control Using Repeated Computation

Patentee:

John K. McGee (exact or similar names) - Houston, Harris County, TX

USPTO Classifications:

318/573, 700/275

Tool Categories:

metalworking machines : metalworking machine mechanisms : nc and cnc apparatus

Assignees:

Giddings & Lewis, Inc. - Fond Du Lac, Fond Du Lac County, WI

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	Sep. 26, 1968
Granted:	Apr. 11, 1972

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Giddings & Lewis Manufacturing Co.

Description:

Abstract:

A numerical path control system including a time shared digital computer generating for each of a plurality of axes regularly recurring numerical excursion commands. A two axis system is shown to be capable of deriving from a small number of data words successive straight line path or circular arc path command signals at a rate of 50 times a second and of converting these into intermediate or secondary command signals which are applied to the servos of the machine axes at a rate of 500 times a second.