Mori Seiki Co., Ltd.

Dmg Mori Company Limited

Dmg Mori Seiki Co., Ltd.

Hisayoshi Morita

Shizuo Nishikawa

Satoshi Miyamoto

Ryuichi Fujiwara

Katsuhiko Ono

Kenichiro Ueno

Masami Yabuta

Yasutaka Kato

Sosuke Sakamoto

A vibration state detection device includes an imaging device configured to image at least one driven element to be driven by a drive unit of a machine tool; and a vibration state analysis unit configured to calculate a parameter corresponding to vibration of the driven element, based on image data for each predetermined period of elapsed time acquired by the imaging device. The parameter includes at least a vibration frequency and a machine tool including the vibration state detection device. Accordingly, it is possible to reliably obtain a parameter corresponding to vibration caused by cutting, even if cutting oil, chips, or the like adheres to a tool of a machine tool, and it is possible to suppress vibration caused by cutting.

Vibration state detection device and machine tool including vibration state detection device

The present invention relates to a machining system etc. capable of highly accurately machining a workpiece even in a case where the workpiece is deflected. A machining systemis configured with a lathehaving end portion supporting mechanismsfor supporting both end portions of an elongated workpiece W horizontally, a tool restfor holding a tool, a feed mechanism for moving the tool restin three orthogonal directions, and a control devicefor controlling the feed mechanism, and a non-contact measuring devicefor measuring the deflection shape of the workpiece W when the workpiece W is rotated. The control devicemoves the tool along the deflection shape measured by the non-contact measuring device

Machining method and machining system

A workpiece measuring apparatus has an external module provided outside an NC device to acquire position data of one or more movable axes of a movable unit having a measuring head attached thereto. The position data of the measuring head is acquired at the same time interval as that for the distance measurement by the measuring head. The position of the workpiece is acquired by calculation from the acquired distance measurement data and the position data of the measuring head. The continuous shape of the workpiece can be measured by performing continuous measurement while moving the measuring head. Therefore, no modification or change is required such as adding a new function to the NC device. In addition, the present invention is applicable to any machine tool equipped with an NC device of any configuration, without being restricted by constraints of the NC device.

Apparatus for and method of measuring workpiece on machine tool

A machining systemcomprises a lathehaving end portion supporting mechanismsfor supporting an elongated workpiece W horizontally, center restsfor supporting the middle portion of the workpiece W, an adjustment mechanism for adjusting the supported position of the workpiece W by adjusting the height positions of the center rests, a tool rest, and a control device, and a non-contact measuring devicefor measuring the deflection amount of the workpiece W at portions thereof supported by the center restswhen the workpiece W is rotated. The control deviceis configured to adjust the height positions of the center restsby controlling the adjustment mechanism on the basis of the measured deflection amount, so that the height positions of both end portions of the workpiece W being rotated and the middle portion thereof become the same.

A workpiece measuring apparatus includes a programmable controller which acquires positional data of a measuring head. At the same time that the programmable controller acquires the positional data, a pulse output unit outputs timing pulses. The measuring head measures a workpiece on a machine tool according to a measurement command which is output positively earlier than the timing of predetermined time intervals by a time difference which is preset by a predictive system. As a result, a first time at which the programmable controller acquires the positional data of the measuring head and a second time at which the measuring head measures the workpiece in response to the measurement command synchronize. The workpiece measuring apparatus is capable of measuring the workpiece highly accurately in a three-dimensional space according to a minimum required amount of measured data without the need for modifying an existing NC apparatus combined with the machine tool.

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Yamatokoriyama, Japan

Hisayoshi Morita