Thk Co., Ltd.

Takuya Yamagata

Hiroaki Mochizuki

Hidekazu Michioka

Hiroshi Niwa

Takuya Horie

Yuuji Shirakawa

A motion guide device is able to damp a moving block from vibrating in a direction perpendicular to an axis of a raceway rail. A damping plate with a surface facing a surface of a raceway is provided at a moving block body. The surface of the damping plate is set to be in contact with the raceway rail or is set such that a gap between its surface of the raceway rail is as close to zero as possible. When vibration occurs from the raceway rail or the moving block, the surface of the raceway rail and the surface of the damping plate come into contact with each other. This brings about change in a spring constant of the motion guide device in the direction perpendicular to the axis of the raceway.

Motion guide device and method of assembling motion guide device

A machining error correction method corrects error in machining of a work by a tool. The method is adapted for a machine tool that includes a numerical control unit in which a movement amount of the tool is programmed and a tool moving unit that is driven by an instruction signal sent from the numerical control unit and feeds the tool to the work fixed on a work table. The method includes the steps of moving the tool from a program origin to a measurement point provided separately from the program origin by giving a predetermined measurement movement amount to the tool moving unit from the numerical control unit; measuring a positional deviation amount between the measurement position and a tool position after the movement is finished; and correcting a machining movement amount of the tool moving unit using the positional deviation amount when the work is machined.

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Tokyo, Japan

Takuya Yamagata