Tilt device
AssigneesSankei C and C Corporation, Toyota Jidosha Kabushiki Kaisha, Tokai Kyohan Co., Ltd., Shoho Ironworks Co., Ltd.
InventorsKazuhiro Sakane, Yuko Kamata
Life of this patent
Estimating the term…
Abstract
In the course of a machining of a workpiece with a tool, a drive spindle with a tilt table secured thereto of a tilt device provided on a work table of a machining center is rotated by a direct drive motor to control the relative angular position between the tool and the workpiece, and within a predetermined period of time in the course of a machining, the direct drive motor is rotated at a high speed with a spindle head and the work table of the machining center kept away to rotate the drive spindle and hence, the tilt table at a high speed, so that chips and cutting lubricant can be shaken from the workpiece and the tilt table.
Claims8
1-6. (canceled)
A tilt device secured onto a work table of a machine tool wherein a spindle head rotatably supporting a tool spindle and the work table to which a workpiece is detachably attached are relatively moved to machine the workpiece with a tool attached to the tool spindle, the tilt device comprising:
- a support pedestal secured on the work table;
- a drive spindle supported by a front bearing and a rear bearing in the support pedestal rotatably about a pivot axis;
- a distributor provided on the axis of the drive spindle for distribution of pressurized oil;
- a direct drive motor provided with a stator fixedly fitted in a retention bore which is formed coaxially of the pivot axis between the front bearing and the rear bearing in the support pedestal and a rotor fixedly fitted on the drive spindle;
- a tilt table secured to the drive spindle for detachably attaching the workpiece thereto;
- and
- a controller for controlling the relative angular position between the tool and the workpiece by rotating the drive spindle by the operation of the direct drive motor and for rotating the tilt table at a high speed to shake out chips by rotating the direct drive motor at a high speed with the spindle head and the work table kept away in a predetermined period of time in the state that the workpiece is attached on the tilt table.
A tilt device secured onto a work table of a machine tool wherein a spindle head rotatably supporting a tool spindle and the work table to which a workpiece is detachably attached are relatively moved to machine the workpiece with a tool attached to the tool spindle, the tilt device comprising:
- a support pedestal secured on the work table;
- a drive spindle having a large diameter portion, an intermediate diameter portion and a small diameter portion formed in turn and supported at the large diameter portion and the small diameter portion by a front bearing and a rear bearing in the support pedestal to be rotatable about a pivot axis;
- a distributor provided on the axis of the drive spindle for distribution of pressurized oil;
- a direct drive motor provided with a stator fixedly fitted in a retention bore which is formed coaxially of the pivot axis between the front bearing and the rear bearing in the support pedestal, and a rotor fitted on the intermediate diameter portion of the drive spindle;
- an annular member fitted on the intermediate diameter portion of the drive spindle to be prevented by a key from rotation and secured to a front end surface of the rotor;
- fixing means inserted in an axial direction from a front end surface of the drive spindle through the large diameter portion between the distributor and the front bearing and pressing the annular member against a stepped portion between the large diameter portion and the intermediate diameter portion;
- a tilt table secured to the drive spindle;
- and
- a controller for controlling the relative angular position between the tool and the workpiece by rotating the drive spindle by the operation of the direct drive motor and for rotating the tilt table at a high speed to shake out chips by rotating the direct drive motor at a high speed with the spindle head and the work table kept away within a predetermined period of time in the course of machining the workpiece.
Dependencies are inferred from the claim text.