SUPPORTING STRUCTURE OF TOOL FOR MACHINING PIPE END
申请公布号:JP2011020141(A)
申请号:JP20090166687
申请日期:2009.07.15
申请公布日期:2011.02.03
发明人:KITAGAWA JUN
分类号:B21D22/02;B21D41/02
主分类号:B21D22/02
摘要:PROBLEM TO BE SOLVED: To provide a supporting structure of a tool for machining a pipe end capable of preventing generation of any moment in a supporting part even when the eccentric load is applied to the tool during the machining, and increasing the maximum insertion load of the tool. SOLUTION: A supporting mechanism 20 for supporting a mandrel 15 for performing the form-machining of an end of a pipe P has a knuckle 22 fixed to a hydraulic cylinder for advancing/retracting the mandrel 15 to/from the pipe P, and a holder 21 which is turnably supported by the knuckle 22 via a turning mechanism 23 with the mandrel 15 being fixed thereto. The turning mechanism 23 has a pin 24 and a through hole 25 in which the pin 24 is inserted. An arc surface 21c and an arc surface 22c corresponding to each other are formed on the holder 21 and the knuckle 22, and the holder 21 is turned with respect to the knuckle while the arc surface 21c copies the arc surface 22c. COPYRIGHT: (C)2011,JPO&INPIT
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