公开(公告)号：USRE36194E

公开(公告)日：1999-04-27

申请号：US57980

申请日：1998-04-10

申请人： Aritaka Tatsumi

发明人： Aritaka Tatsumi

IPC分类号： B21C3/16 ,  B21C37/20 ,  B21D17/00 ,  B21B17/08

CPC分类号： B21C37/202 ,  B21C3/16 ,  B21C37/207

摘要： An improved machine for forming a plurality of thin, spiral grooves in the inner surface of a metal pipe. A grooving plug is inserted and held in the metal pipe in such a manner that its axial position is constant and the metal pipe, while being moved longitudinally, is pressed by a plurality of balls which rotate planetarily around the outer surface of the metal pipe at a position corresponding to the position of the grooving plug to continuously form a plurality of spiral grooves in the inner surface of the metal pipe. Thereafter, the metal pipe is finished through a die. The machine manufactures at a high rate metal pipe which has a smooth outer surface and a grooved inner surface.

公开(公告)号：US4373366A

公开(公告)日：1983-02-15

申请号：US218152

申请日：1980-12-19

申请人： Aritaka Tatsumi

发明人： Aritaka Tatsumi

IPC分类号： B21C3/16 ,  B21C37/20 ,  B21D17/00 ,  B21B17/08 ,  B21C1/24

CPC分类号： B21C37/202 ,  B21C3/16 ,  B21C37/207

摘要： An improved machine for forming a plurality of thin, spiral grooves in the inner surface of a metal pipe. A grooving plug is inserted and held in the metal pipe in such a manner that its axial position is constant and the metal pipe, while being moved longitudinally, is pressed by a plurality of balls which rotate planetarily around the outer surface of the metal pipe at a position corresponding to the position of the grooving plug to continuously form a plurality of spiral grooves in the inner surface of the metal pipe. Thereafter, the metal pipe is finished through a die. The machine manufactures at a high rate metal pipe which has a smooth outer surface and a grooved inner surface.

摘要翻译： 一种改进的机器，用于在金属管的内表面中形成多个薄的螺旋形槽。 开槽插头以金属管的轴向位置恒定的方式插入并保持在金属管中，并且金属管在纵向运动的同时被多个球围绕金属管的外表面旋转地滚动 与所述切槽塞的位置相对应的位置，以在所述金属管的内表面中连续地形成多个螺旋槽。 此后，金属管通过模具完成。 该机器在高速金属管制造，其外表面光滑，凹槽内表面。