Electrically-operated chuck opening-closing device
AssigneeOkuma Corporation
InventorKazuo Ichimura
Life of this patent
Estimating the term…
Abstract
An electrically-operated chuck opening-closing device includes a chuck that grasps workpiece, a conversion device with a control gear provided to the outer circumference, a drawbar that couples the conversion device and the chuck, a transmission gear provided to a main spindle, a second rotary shaft rotatably pivoted to be parallel to the main spindle, a first gear and a second gear rotatably provided on the second rotary shaft, an auxiliary motor that drives the first gear, a first clutch that can couple and decouple the auxiliary motor and the second rotary shaft, and a second clutch that can couple and decouple the second rotary shaft and the second gear.
Claims7
An electrically-operated chuck opening-closing device, comprising:
- a chuck provided at a tip of a main spindle of a machine tool to grasp a workpiece by a gripper;
- a conversion device having on an outer circumference thereof a control gear, being provided on the axis of the main spindle to convert rotary motion into linear motion in the direction of the axis of the main spindle;
- a drawbar provided between the conversion device and the chuck to perform linear motion by means of the conversion device so that the gripper of the chuck is operated to hold and release the workpiece;
- a transmission gear provided on an outer circumference of the main spindle;
- a first gear rotatably provided on a second rotary shaft parallel to the main spindle and meshes with the control gear;
- a second gear rotatably provided on the second rotary shaft and meshes with the transmission gear;
- an auxiliary motor that rotates the first gear;
- a first clutch that couples and decouples the auxiliary motor and the first gear;
- and
- a second clutch that couples and decouples the first gear and the second gear.
Dependencies are inferred from the claim text.