Kabushiki Kaisha Imao Corporation

Dmg Mori Company Limited

Dmg Mori Seiki Co., Ltd.

Toshiya Sato

Kazuhide Iwata

Kazuo Yamazaki

Hidenori Saraie

Kinji Hashimoto

Keiichiro Matsuo

Shigenori Jo

A machine tool includes a bed supported on a ground by supporting jigs, a table movable in an X-axis direction, a spindle head movable in a Y-axis direction, a quill provided to be movable in a Z-axis direction, a spindle supported by the quill to be rotatable about its axis, feed mechanisms for moving the table and the like in the axis directions, and a numerical controller controlling operation of the feed mechanisms, and the numerical controller is configured to calculate motion errors based on load values acting on the supporting jigs by a motion locus estimator, an influence coefficient storage, a motion error calculator, and a motion locus storage, generate a correction signal for compensating for the motion errors by a position corrector, and add the generated correction signals to a position control signal transmitted from a position generator to a position controller.

Method of machining workpiece using machine tool, and machine tool

A reinstalling method which, when reinstalling an object to be supported, precisely restores the object to an initial installing state in a short period of time without requiring special skills. In a state before supporting of an object to be supported by support tools is released and in each of states in which the supporting is sequentially released, load acting on at least one support tool selected from among the support tools being in a supporting state is obtained. When reinstalling, the object is sequentially supported at the same positions as those before the release by the support tools in the reverse order to that of the release, and, a vertical-direction supporting position of each support tool is adjusted so that a load cell of the selected support tool detects the same value as the load obtained in the supporting state before the support tool was released.

Method of reinstalling object to be supported

A mounting support device allows workpieces to be attached at points intermediate between discrete positions of fixture bases of machine tools. The mounting support device has three support members. A lower support member is slidably attached to an intermediate member allowing the intermediate member to move along an x-axis. An upper support member is slidably attached to the intermediate member allowing the upper member to move along a z-axis. A jig for holding a workpiece is connected to the upper member. The lower support member is attached to the fixture base in a discrete location in the usual way. Thus, the jig holding the workpiece can be positioned intermediately between discrete mounting positions of the fixture base. The sliding attachments maintain precise alignment between the support members and can be secured after adjustment.

Mounting support device

A machining device has a base and a fixture. The base is fixedly attached to a pallet or a machining table. The fixture is mounted on the base, contacting the base only at projecting contact surfaces which project above the mounting surface of the base. Cleaning of the base before a fixture is attached is done efficiently because only the minimized projecting contact surfaces area between the base and the fixture needs to be cleaned to permit stable contact between the base and fixture. The base and fixture also include projections and holes for precisely aligning the base and fixture with respect to each other.

Growing community of inventors

Gifu, Japan

Toshiya Sato