Machine tool and machining method
AssigneesCitizen Machinery Miyano Co., Ltd., Citizen Holdings Co., Ltd.
InventorHikaru Takahashi
Life of this patent
Estimating the term…
Abstract
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.
Claims9
A machine tool comprising an eccentric guide bush which supports an object to be machined projecting from a leading end of a main spindle in a state of being eccentric relative to a shaft center of the main spindle.
A machining method comprising:
- rotating a main spindle about a shaft center;
- and
- machining an object to be machined by using an eccentric guide bush which supports the object to be machined projecting from a leading end of the main spindle in a state of being eccentric relative to a shaft center of the main spindle.
Dependencies are inferred from the claim text.