Toshiba Kikai Kabushiki Kaisha

Kazunori Urushibata

Mitsunori Kokubo

Haruyuki Matsubayashi

Mitsuoki Hatamoto

Hiroshi Kondo

A transcript apparatus has a vacuum-forming chamberin which a transcription dieand a forming producttranscribed from the dieare disposed face to face with each other, a movable bodysupporting one of the dieand the productto allow the dieand the productto be movable closer to or away from each other, a balance cylinderplaced in parallel to a moving direction of the movable bodyand connected to the movable bodyvia a piston rod, a pressure detectordetecting a pressure inside the chamber, and a pressure control sectionoperative to control a pressure of working fluid supplied to the chamberdepending on an output from the pressure detectorto cancel fluctuation in load acting on the movable bodyin the moving direction thereof.

Transcript apparatus

Disclosed is a method of effectively dressing a grinding wheel of high grain concentration having a high wheel number usable for an ultrahigh precision processing. When a grinding wheel (,) is trued (i.e., formed into a predetermined shape) by using a truing tool (,), the grinding wheel (,) is dressed by feeding a coolant W in which abrasive grains (,) for dressing are dispersed into a space between the truing tool (,) and a surface (,) of the grinding wheel (,). Therefore, it is possible to easily true and dress the ultra-fine grinding wheel usable for ultra-high precision processing, without being affected by the manufacturing limit of the dressing tool, being different from the dressing method using a dressing tool.

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Shizuoka, Japan

Kazunori Urushibata