To correctly perform the cutting work without particularly applying the strong force to an edge preparation device, by confirming and holding a core of every tube to be cutted, in every edge preparation, and making the reaction force act on the edge preparation device in the edge preparation.
An inner diameter chuck is inserted into a tube to be cutted, by the action of a floating head. Then the wedge members 2 mounted on the lock members 1, are respectively pushed into the gap parts between the inclined parts of the lock members opposite to each other, and an inner face of the tube to be cutted, located on an outer peripheral part of the inclined part, and the inner diameter chuck is surely held on the position in such manner that it is pressed in a direction vertical to the shaft by the lock members 1 opposite to each other in an axial direction, and the wedge members 2. The edge preparation of a membrane tube can be performed by an automatic device in this stabilized state.
YONEMOTO SHINGO
ITO CHIAKI
KAWASHIMA SHINJI
TOURITSU ENG KK
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