MACHINE TOOL AND MACHINING METHOD

• Main Author: TAKAHASHI HIKARU
• Format: Patent
• Language: English
• Published: 24.07.2014
• Subjects: BORING; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOTDIRECTED TO A PARTICULAR RESULT; CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g.ARRANGEMENTS FOR COPYING OR CONTROLLING; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MACHINE TOOLS; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OFPARTICULAR DETAILS OR COMPONENTS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PERFORMING OPERATIONS; PHYSICS; REGULATING; 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; TURNING

A machine tool includes a main spindle (10) which holds a workpiece (200, object to be machined) and is rotatable about the shaft center (C1), a main spindle motor (20, main spindle driver) which rotates the main spindle (10), a rotary guide bush (30, eccentric guide hush) which supports the workpiece (200) projecting from a leading end of the main spindle (10) to be rotatable in a state of being eccentric relative to the shaft center (C1) by a length E, a guide bush servomotor (40, guide bush driver) which rotates the rotary guide bush (30) about the shaft center (C1) in synchronization with the main spindle (10), and a controller (50) which controls the rotation and driving of the guide bush servomotor (40), so as to selectively switch between the rotation state and the stop state of the rotation.