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2. 发明申请

WO1988000103A1 A RETHREADING TOOL 审中-公开
标题翻译：一个恢复工具
公开(公告)号：WO1988000103A1
公开(公告)日：1988-01-14
申请号：PCT/AU1987000196
申请日：1987-07-02
申请人： TRIO DEVELOPMENTS PTY. LTD. , MIZZI, Joseph, Phillip, Anthony
发明人： TRIO DEVELOPMENTS PTY. LTD.
IPC分类号： B23G05/06
CPC分类号： B23G9/009
摘要： A rethreading tool (2) for cutting new threads, restoring damaged threads or cleaning dirty or corroded threads, particularly the damaged threads of an internally threaded bore (28) having some damage threads (32) and some undamaged threads (34) where the damage threads (32) are closer to the opening of the bore (28) than the undamaged threads (34) comprising in one embodiment a plurality of fingers (12) regularly arranged around a main body (4) to form a variable diameter cylinder, said fingers (12) being provided with thread cutting formations (14) at their respective distal ends and being resiliently connected to the main body (4) at their respective proximal ends so that the fingers (12) are capable of movement between a retracted position in which the fingers are spaced relatively closer together and an operative position in which the fingers are spaced relatively further apart in accordance with corresponding movement of an operating means (6) so that the thread cutting formations (14) of the fingers (12) when in the retracted position may be inserted into the threaded bore (28) until the formations (14) alignedly mesh with the undamaged threads (34) and upon rotation of the tool (2) to unscrew it from the bore (28) the thread cutting formations (14) when in the operative position restore the damaged threads, the undamaged threads (34) assisting in accurately locating the tool (2) within the bore (28) so that the damaged threads are restored to form a single helical thread continuously with the undamaged threads (34).
摘要翻译：一种用于切割新螺纹，恢复损坏的螺纹或清洁脏的或被腐蚀的螺纹，特别是具有一些损坏螺纹（32）和一些未损坏螺纹（34）的内螺纹孔（28）的损坏螺纹的螺纹刀具（2），其中损坏螺纹（32）比没有损坏的螺纹（34）更靠近孔（28）的开口，在一个实施例中包括围绕主体（4）规则地布置以形成可变直径圆柱体的多个指状物（12），所述多个指状物手指（12）在它们各自的远端处设置有切线结构（14），并且在其各自的近端处弹性地连接到主体（4），使得指状物（12）能够在手指相对更靠近在一起的位置和操作位置，其中根据操作装置（6）的相应运动，手指相对更远地间隔开，使得螺纹切割形成当处于缩回位置时，手指（12）的s（14）可以插入螺纹孔（28）中，直到地层（14）与未损坏的螺纹（34）对准地啮合，并且当工具（2）旋转到当螺纹切割结构（14）在操作位置恢复损坏的螺纹时，未损坏的螺纹（34）有助于精确地将工具（2）定位在孔（28）内，使得损坏的螺纹螺纹被恢复以与未损坏的螺纹（34）连续地形成单个螺旋螺纹。

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