US Patent: 4,250,551 - Methods and Apparatus for Lead Segment Machining


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US Patent: 4,250,551

Methods and Apparatus for Lead Segment Machining

Patentees:

Gerald E. Paveglio, Jr. (exact or similar names) - Malone, Fond du Lac County, WI

Lawrence C. Poehlman (exact or similar names) - Fond Du Lac, Fond Du Lac County, WI

Richard L. Werdin (exact or similar names) - Fond Du Lac, Fond Du Lac County, WI

USPTO Classifications:

318/569, 700/181, 82/1.11

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:	Jul. 11, 1979
Granted:	Feb. 10, 1981

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:

Improvements in numerical control systems associated with turning machines and by which a special mode of machining is carried out from those blocks of a part program having a special mode code associated therewith. A lead segment is automatically formed in the workpiece by the special block data from which signals are produced to represent (i) the angular starting location of the lead segment on the workpiece, (ii) the desired lead, and (iii) the ending location of the segment. A lead segment of desired lead and extent may thus be located angularly on a workpiece. A plurality of lead segments, contiguous or separated by zero-lead portions of a composite groove, may be formed circumferentially around the workpiece within an angular span of less than 360 degrees and with its groove portions accurately located in an angular sense.