APPARATUS AND METHOD FOR ROLLING WORKPIECES

WIPO Patent Application WO2002042018

A9

There is provided a new and improved apparatus (20) and method for rolling workpieces such as crankshafts (22). The apparatus has first (70) and second (72) rolling heads mounted at spaced positions along a common rolling arm (74) to receive a crankshaft bearing (32) therebetween which can then be shifted relative to one another along the common rolling arm (74) to close the heads (70, 72) or rolling tools for clamping onto the workpiece (22). The in-line clamping action and force provided by the tools (70, 72) on the rolling arm (74) are created by actuation of a tall, thin cylinder assembly (75) including a number of aligned individual cylinders (76) sized to keep the width of the cylinder assembly (75) to a minimum so that all of the rolling arms (74) can likewise be of a thin construction pivotally mounted on one side of the crankshaft (22) and axially spaced according to the crankshaft bearing (32) spacing for rolling all of the bearings (32) in a single rolling operation. A strain sensor (372) can be utilized to generate clamping force readouts that are based on the amount of structural deflection of the arm (74) detected by the sensor (372).

HEFFRON ALAN JOHN (US)
BRECHTELSBAUER EARL OTTO (US)
ST PIERRE MARC DAMIAN (US)

PCT/US2001/043521

February 06, 2003

November 21, 2001

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INGERSOLL CM SYSTEMS INC (US)
HEFFRON ALAN JOHN (US)
BRECHTELSBAUER EARL OTTO (US)
ST PIERRE MARC DAMIAN (US)

B23P9/02; B24B39/04; B21H7/18; C21D7/04; (IPC1-7): B21C51/00; B21D15/00; B21K1/08

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