公开(公告)号：EP1428597A4

公开(公告)日：2008-05-14

申请号：EP02741209

申请日：2002-06-20

申请人： NISSEI CO LTD

发明人： SHINBUTSU TOSHINAKA ,  YOSHIZAWA MINORU ,  AMANO SHUICHI ,  ITO KENJI

IPC分类号： B21H5/00 ,  F16H55/22 ,  B21H3/04

CPC分类号： B21H5/005 ,  F16H55/22 ,  Y10T29/49471

摘要： A method of forming a worm gear by rolling to reduce the number of working processes while sufficiently assuring a gear accuracy, comprising the step of positioning a work material between a first rolling die (100) and a second rolling die (101) by the rotation of the rolling dies and a servo−motor (76) for feeding the work material, wherein the lead angle of the worm gear varies to produce a step during form rolling when the lead angle is large enough to produce a large difference between a finished diameter and a material diameter, a slide table (55) is slid freely on a feed table (53) and detected by a detection sensor when the step occurs by the lead angle of the first rolling die (100), second rolling die (101), and the work since the slide plate (55) is allowed to slid freely on the feed table (53), the rotations of the first rolling die (100) and the second rolling die (101) are stopped, the reverse movement of the slide plate (55) is also started to start the rolling simultaneously when the first rolling die (100) and the second rolling die (101) are started to rotate reversely and the same steps are repeated for rolling.

公开(公告)号：EP1428597A1

公开(公告)日：2004-06-16

申请号：EP02741209.7

申请日：2002-06-20

申请人： Nissei Co. Ltd.

发明人： SHINBUTSU, Toshinaka, NISSEI CO., LTD. ,  YOSHIZAWA, Minoru, NISSEI CO., LTD. ,  AMANO, shuichi, NISSEI CO., LTD. ,  ITO, Kenji, NISSEI CO., LTD.

IPC分类号： B21H3/04 ,  F16H55/22

CPC分类号： B21H5/005 ,  F16H55/22 ,  Y10T29/49471

摘要： A worm is formed by rolling to reduce the number of processing steps while ensuring the worm accuracy satisfactorily. A work material is positioned between a first rolling die (100) and a second rolling die (101) by rotation of the rolling dies and a servomotor (76) for feeding the work material. When the lead angle of a worm is large and there is a large difference between the finished diameter and the blank diameter, the lead angle changes during the progress of rolling process, resulting in occurrence of through-feed. A slide plate (55) is freely slidable on a slide (53). Therefore, when through-feed occurs owing to the lead angles of the first and second rolling dies (100) and (101) and the workpiece, the slide plate (55) slides freely, and this is detected with a detecting sensor. The rotation of the first and second rolling dies (100) and (101) is stopped. Then, the first and second rolling dies (100) and (101) initiate reverse rotation, and at the same time, the slide plate (55) also initiates movement in the reverse direction. Thus, rolling is started. Thereafter, similar processing is repeated to perform rolling.

摘要翻译： 通过滚动形成蜗杆以减少加工步骤的数量，同时确保蠕虫精度令人满意。 工件通过轧制模具的旋转和用于供给工件的伺服电动机（76）而位于第一轧制模具（100）和第二轧制模具（101）之间。 当蜗杆的前角较大时，成品直径和坯料直径之间的差异较大时，导辊角度在轧制过程中发生变化，导致通过进给。 滑板（55）可在滑块（53）上自由滑动。 因此，当通过第一和第二轧制模具（100）和（101）和工件的导向角发生通过进给时，滑板（55）自由滑动，并且用检测传感器检测。 第一和第二轧制模具（100）和（101）的旋转停止。 然后，第一和第二轧制模具（100）和（101）启动反向旋转，同时滑板（55）也开始反向移动。 因此，开始轧制。 此后，重复类似的处理以进行滚动。

公开(公告)号：EP0947258A3

公开(公告)日：2000-07-19

申请号：EP99302645.9

申请日：1999-04-01

申请人： Nissei Co. Ltd.

发明人： Shinbutsu, Toshinaka ,  Yoshizawa, Minoru ,  Amano, Shuichi ,  Nakata, Katsuyuki ,  Yoshikawa, Hiroshi ,  Okino, Hiroshi

IPC分类号： B21H3/04 ,  B21H1/00

CPC分类号： B21H1/00

摘要： A round die type form rolling apparatus comprises: a pair of die moving blocks (15a,15b) rotatably supporting a pair of round dies (12a,12b); four beam shafts (19) disposed around the rolling position of a work (33) being rolled by the round dies (12a,12b) and extending between the pair of die moving blocks (15a,15b); and a push mechanism (20) for moving the pair of die moving blocks (15a,15b) toward each other. The die moving blocks (15a,15b) are moved, guided by the beam shafts (19), toward each other and the reaction forces generated between a pair of the round dies (12a,12b) by the rolling pressure are shared by the beam shafts (19) to prevent the round dies from escaping outwardly upwardly due to the reaction force from the work (33) that is generated when the rolling pressure is applied to the work. This arrangement improves the machining precision of the work (33).

公开(公告)号：EP0947258A2

公开(公告)日：1999-10-06

申请号：EP99302645.9

申请日：1999-04-01

申请人： Nissei Co. Ltd.

发明人： Shinbutsu, Toshinaka ,  Yoshizawa, Minoru ,  Amano, Shuichi ,  Nakata, Katsuyuki ,  Yoshikawa, Hiroshi ,  Okino, Hiroshi

IPC分类号： B21H1/00

CPC分类号： B21H1/00

摘要： A round die type form rolling apparatus comprises: a pair of die moving blocks (15a,15b) rotatably supporting a pair of round dies (12a,12b); four beam shafts (19) disposed around the rolling position of a work (33) being rolled by the round dies (12a,12b) and extending between the pair of die moving blocks (15a,15b); and a push mechanism (20) for moving the pair of die moving blocks (15a,15b) toward each other. The die moving blocks (15a,15b) are moved, guided by the beam shafts (19), toward each other and the reaction forces generated between a pair of the round dies (12a,12b) by the rolling pressure are shared by the beam shafts (19) to prevent the round dies from escaping outwardly upwardly due to the reaction force from the work (33) that is generated when the rolling pressure is applied to the work. This arrangement improves the machining precision of the work (33).

摘要翻译： 一种圆形模具轧制设备，包括：一对可旋转地支撑一对圆形模具（12a，12b）的模具移动块（15a，15b） 四个光束轴（19）围绕工件（33）的滚动位置设置，由圆形模具（12a，12b）卷绕并在一对模具移动块（15a，15b）之间延伸; 以及用于使一对模具移动块（15a，15b）朝向彼此移动的推动机构（20）。 模具移动块（15a，15b）由梁轴（19）引导移动，并且通过轧制压力在一对圆形模具（12a，12b）之间产生的反作用力共享 轴（19），以防止圆形模具由于施加轧制压力而产生的工件（33）的反作用力向外向外逸出。 这种布置提高了工件（33）的加工精度。

公开(公告)号：EP0947258B1

公开(公告)日：2006-08-16

申请号：EP99302645.9

申请日：1999-04-01

申请人： Nissei Co. Ltd.

发明人： Shinbutsu, Toshinaka ,  Yoshizawa, Minoru ,  Amano, Shuichi ,  Nakata, Katsuyuki ,  Yoshikawa, Hiroshi ,  Okino, Hiroshi

IPC分类号： B21H3/04 ,  B21H1/00

CPC分类号： B21H1/00