TOOL RADIUS ADJUSTING METHOD IN MACHINE TOOL AND MACHINE TOOL FOR PRACTICING THE METHOD
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Accused Products
Abstract
At a contact step in a tool radius adjusting method, a reference portion of a movable body provided radially movably on a housing of a boring tool and a position adjusting reference member fixed on a machine tool are brought into contact by sliding the movable body relative to the housing so that the position of a cutting blade comes to a predetermined position in a direction to go away from a rotational axis. Then, at an adjusting step, the position of the cutting blade relative to the rotational axis is adjusted by changing the relative position between a tool spindle holding the boring tool and the position adjusting reference member in a direction to come close to each other by drive mechanisms of the machine tool used for positioning a spindle head with the tool spindle relative to a workpiece in machining the workpiece with the cutting blade.
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Citations
10 Claims
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1-5. -5. (canceled)
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6. A tool radius adjusting method in a machine tool which comprises:
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a boring holder main body provided with a housing and a movable body supported on the housing to be slidable relative to the housing in a direction to cross a rotational axis direction and having a reference portion; a cutting blade attached to the movable body; a tool spindle rotatably supported on a spindle head and holding the housing; a position adjusting reference member provided to be changeable in relative position to the tool spindle and provided to be contactable with the reference portion of the movable body; and at least one drive mechanism used for positioning the spindle head relative to a workpiece in machining the workpiece with the cutting blade; the method comprising; a contact step of sliding the movable body relative to the housing so that the position of the cutting blade comes to a predetermined position in a direction to go away from the rotational axis, to bring the reference portion of the movable body and the position adjusting reference member into contact; and an adjusting step of, after the contact step, changing the relative position between the tool spindle and the position adjusting reference member by the at least one drive mechanism in a direction to come close each other to adjust the position of the cutting blade relative to the rotational axis. - View Dependent Claims (7, 8, 9)
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10. A machine tool comprising:
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a boring holder provided with a housing and a movable body supported on the housing to be slidable relative to the housing in a direction to cross a rotational axis direction and having a reference portion; a cutting blade attached to the movable body; a tool spindle rotatably supported on a spindle head and holding the housing; a position adjusting reference member provided to be changeable in relative position to the tool spindle and provided to be contactable with the reference portion of the movable body; at least one drive mechanism being able to change the relative position between the tool spindle and the position adjusting reference member and used for positioning the spindle head relative to a workpiece in machining the workpiece with the cutting blade; and a control device for controlling the at least one drive mechanism to control the relative position between the tool spindle and the position adjusting reference member; wherein in the state that the position of the cutting blade comes to a predetermined position in a direction to go away from the rotational axis and that the reference portion of the movable body and the position adjusting reference member are held in contact, the control device controls the at least one drive mechanism to adjust the position of the cutting blade relative to the rotational axis by changing the relative position between the tool spindle and the position adjusting reference member in a direction to come close to each other.
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Specification