MACHINING APPARATUS AND METHOD

Title:

MACHINING APPARATUS AND METHOD

Document Type and Number:

WIPO Patent Application WO1998058767

Kind Code:

A3

Abstract:

A pair of grinding wheel carriages (26), each carrying its own grinding wheel (152, 162), are both carried by a grinding machine (20) to one side of a work carriage and workpiece (40) when carried thereby. The workpiece (40) is, in this instance, a camshaft with multiple pairs of similar cams (62, 64, 72, 74, 82, 84) disposed along the axis of the workpiece. The operation control and disposition of the grinding wheels (152, 162) provides for use of either grinding wheel to grind cam pairs (62, 64) or both grinding wheels (152, 162) to simultaneously grind a pair of cam pairs. The method involves first grinding a first cam pair (62, 64) of spaced, but in phase cams, with one of the grinding wheels (152); thereafter utilizing both grinding wheels (152, 162) simultaneously to grind two pairs of spaced cam pairs (72, 74) and repeating this step depending upon the number of cam pairs, lastly the final cam pair (82, 84) is ground utilizing the other grinding wheel (162). Workspeed for the camshaft (40) is varied depending upon the cam region being ground and to accommodate grinding two cam pairs (62...) where the phase angle of one cam pair differs from the phase angle of the other cam pair.

Inventors:

HYKES TIMOTHY WILLIAM
KLAUSER ANDREW THOMAS

Application Number:

PCT/US1998/012799

Publication Date:

November 04, 1999

Filing Date:

June 24, 1998

Export Citation:

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Assignee:

UNOVA I P CORP (US)

International Classes:

B24B19/12; B24B5/42; B24B27/00; B24B49/00; (IPC1-7): B24B1/00

Foreign References:

US5392566A	1995-02-28
US2270206A	1942-01-13
US4790698A	1988-12-13
US4423990A	1984-01-03
US3271910A	1966-09-13
US2287449A	1942-06-23

Other References: