Howa Machinery, Ltd.

Shin Yoshida

Hiroshi Nagaosa

A chuck-claw coupling mechanism includes a coupling member provided in a master jaw, a first resilient member, and an operation unit. The coupling member is movable between a coupling position at which the coupling member is coupled to the claw, and a separation position at which the coupling member is separated from the claw. The first resilient member urges the coupling member toward the coupling position. The operation unit moves the coupling member to the separation position.

Chuck-claw coupling mechanism

A rotary cylinder for controlling operations of a chuck to be used on a lathe or the like. The rotary cylinder comprises a housing, a cylinder unit, a distributor supporting the cylinder unit in bearings fitted therein, and a seizure detecting system including a detaining mechanism for restraining the distributor from rotation relative to the housing. The seizure detecting system detects seizure between the distributor and the cylinder unit and allows the distributor to rotate relative to the housing. The distributor is capable of being fixedly held on the housing without distorting the bearings supporting the cylinder unit and of being disconnected from the housing when seizure occurs between the distributor and the cylinder unit.

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Kiyosu, Japan

Shin Yoshida