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US 6,651,534 B1Granted
NC circular table and NC circular table apparatus
AssigneeYukiwa Seiko Kabushiki Kaisha
InventorsKazuo Sakamaki, Akira Sakamaki, Kiyohiro Kinefuchi
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Abstract
An NC machine tool includes an NC circular table and an NC circular table apparatus which dispense with the original restoration or calibration operation in an absolute type encoder using a backup battery. The NC circular table has an NC controller for performing a positional detection by an absolute type encoder and a backup battery for the encoder is provided in the NC circular table body.
Claims15
An NC machine tool, comprising:
- an NC circular table body having a rotary table connected thereto;
- an NC controller operatively connected to said NC circular table body;
- an absolute type encoder which detects a position of said rotary table;
- and
- a backup battery for the absolute type encoder provided internal to said NC circular table body,
- wherein said backup battery enables storage of said detected position of said rotary table when said NC circular table body and said NC controller become disconnected.
3 more elements
An NC machine tool, comprising:
- an NC circular table body having a rotary table connected thereto;
- an NC controller operatively connected to sad NC circular table body;
- an absolute type encoder which detects a position of said rotary table;
- and
- a backup battery for said encoder connected to a connector connected to said NC circular table body,
- wherein said backup battery enables storage of said detected position of said rotary table when said NC circular table body and said NC controller become disconnected.
3 more elements
An NC machine tool, comprising:
- an NC circular table body having a rotary table connected thereto;
- an NC controller operatively connected to said NC circular table body;
- an absolute type encoder which detects a position of said rotary table;
- a backup battery connected to said absolute type encoder,
- wherein the NC controller and a cable connected to the NC circular table body are detachable from each other,
- said backup battery for said absolute type encoder being connected to a connector connected to said NC circular table body,
- wherein an electric supply from the backup battery to said absolute type encoder is not interrupted by a separation between the NC controller and the rotary table connected to the NC circular table body.
4 more elements
An NC machine tool comprising:
- an NC controller for performing a positional detection by an absolute type encoder;
- an NC circular table to which a cable for connecting the NC controller and an NC circular table body with each other is detachable, and
- a backup battery device provided with a backup battery connected to said NC circular table body for feeding electricity to the absolute type encoder of said NC circular table body when said cable that connects the NC controller and the NC circular table body with each other is removed.
Dependencies are inferred from the claim text.