Rotary table
AssigneeNippon Thompson Co., Ltd.
InventorsKousuke Tobari, Tetsuya Sakai
Life of this patent
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Abstract
A rotary table includes a base body, a movable ring rotatably arranged on the base body, a fixed ring arranged on an inner periphery side of the movable ring and fixed to the base body, and a plurality of rolling elements. The rotary table includes a sensor fixed to the base body and a dog fixed to the movable ring. The movable ring has a scale extending at least at a portion of an outer peripheral side surface, and a groove-shaped recess formed to be recessed inward from an outer periphery of the movable ring at a position corresponding to the scale on the outer periphery. The dog has a leg portion fitted to the recess, and a detected portion protruding outward from the leg portion and detectable by the sensor. The leg portion is able to be fixed to the movable ring at any position in the recess.
Claims8
A rotary table comprising:
- a base body having a planar holding surface;
- a movable ring arranged on the base body to be rotatable around an axis;
- a fixed ring arranged on an inner periphery side of the movable ring and fixed to the base body;
- and
- a plurality of rolling elements arranged to be rollable on an inner circumferential surface of the movable ring and an outer circumferential surface of the fixed ring;
- the rotary table including a sensor fixed to the base body and a dog fixed to the movable ring,
- the movable ring having
- a scale extending at least at a portion of an outer peripheral side surface, and
- a groove-shaped recess formed to be recessed inward from an outer periphery of the movable ring at a position corresponding to the scale on the outer periphery,
- the dog having
- a leg portion fitted to the recess, and
- a detected portion protruding outward from the leg portion and detectable by the sensor,
- the leg portion being able to be fixed to the movable ring at any position in the recess.
Dependencies are inferred from the claim text.