Wood turning – Circular section – Spiral grooving
Patent
1992-10-13
1994-08-02
Bishop, Steven C.
Wood turning
Circular section
Spiral grooving
142 47, 142 55, 409165, B23C 332, B23B 546
Patent
active
053336577
ABSTRACT:
Apparatus for turning and milling a workpiece includes a frame having a chuck and a spindle spaced laterally of the chuck mounting respective opposite ends of the workplace for rotation generally about its longitudinal axis. A carriage mounting the milling device is supported by a rail on the frame for movement generally side-to-side of the frame and longitudinally of the workpiece. A first variable speed electric motor operatively connected to the chuck for driving the rotation of the workpiece about its longitudinal axis is controlled by a first control, which is used to selectively set the rotational speed of the workpiece. A second variable speed electric motor operatively connected to the carriage for driving movement of the carriage generally longitudinally of the workpiece is controlled by a second control, which is used to selectively set the speed of the carriage as it moves longitudinally of the workplace, such that spiral cuts of different predetermined configurations may be automatically made in the workpiece by the milling device by setting the appropriate relative speeds of the first motor and second motor with the first and second controls.
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