METHOD AND DEVICE FOR PREVENTING SLIP OF WORK PIECE

A master servo motor (16) and a slave servo motor (21) that synchronously drive for rotation a master main spindle Cm provided with a center (14) that supports one end of a work piece W and a slave main spindle Cs provided with a center (18) that supports the other end of the work piece are included...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	MAKIUCHI AKIRA
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	DRESSING OR CONDITIONING OF ABRADING SURFACES FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GRINDING MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING PERFORMING OPERATIONS POLISHING TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TRANSPORTING
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Beschreibung
Zusammenfassung:	A master servo motor (16) and a slave servo motor (21) that synchronously drive for rotation a master main spindle Cm provided with a center (14) that supports one end of a work piece W and a slave main spindle Cs provided with a center (18) that supports the other end of the work piece are included. Before grinding, a slip detection cycle that detects a limit current value (A1) for the servo motors, at which the work piece and the centers slip, is executed and, during grinding, a grinding condition is changed to prevent a slip between the work piece and the centers in advance at the time when any one of current values of the servo motors has reached a slip threshold value (A2) set on the basis of the limit current value.