Fuji Machine Mfg. Co., Ltd.

George Isozumi

Masaki Kato

Kazuya Furukawa

Kazuyoshi Nagato

Disclosed in an automatic tool changer in which the tool changing time can be shortened by increasing overlapping operations of the turning operation and the axial advancing/retracting operation of a replacement arm. An arm driver () is so constituted that the driver performs overlapping operations such that at least a part of the operation for turning a replacement arm () by 180&#xb0; and the operation for advancing/retracting the replacement arm in the axial direction in order to insert or withdraw a tool () are performed simultaneously and in parallelism with each other. When the replacement arm () is advanced/retracted in the axial direction in order to insert or withdraw a tool, the replacement arm () is turned by a predetermined distance in a direction reverse to the direction (so called 'normal direction') for turning the arm by 180&#xb0; in parallelism with the advancing/retracting operation, and thereafter, the replacement arm () is turned in the normal direction.

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Chiryu, Japan

George Isozumi