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1. 发明授权

US5898285A Method of teaching welding robot 失效
标题翻译：焊接机器人教学方法
公开(公告)号：US5898285A
公开(公告)日：1999-04-27
申请号：US28774
申请日：1998-02-24
申请人： Toshiaki Nagasawa , Nobuo Kobayashi , Hisaya Ohiwa , Mitsugu Kaneko , Isao Bundou
发明人： Toshiaki Nagasawa , Nobuo Kobayashi , Hisaya Ohiwa , Mitsugu Kaneko , Isao Bundou
IPC分类号： B23K11/31 , G05B19/423 , B23K11/11
CPC分类号： G05B19/423 , B23K11/315 , B23K11/317 , B23K2201/18
摘要： A welding robot has a gun main body, a stationary electrode tip which is immovable relative to the gun main body, and a movable electrode tip which is mounted on the gun main body and is opened and closed by a pressing source. The gun main body is movable by a driving source in a direction in which both the electrode tips lie opposite to each other. In teaching the welding robot by the movement thereof to each weld spot position of a workpiece, the movable electrode tip is moved in a closing direction relative to the gun main body by the pressing source in a state in which the gun main body is kept stationary at a predetermined position relative to the gun support bracket. The stationary electrode tip is moved in the closing direction by a relative movement of the gun main body relative to the movable electrode tip after the movable electrode tip has come into contact with the workpiece. A position at which the stationary electrode tip contacted the workpiece is detected. This position is stored as teaching data.
摘要翻译：焊接机器人具有枪主体，相对于枪主体不可动的固定电极头，以及安装在枪主体上并通过按压开关闭合的可动电极头。枪主体可以通过驱动源沿两个电极头彼此相对的方向移动。在焊接机器人通过其移动到工件的每个焊点位置的情况下，可动电极头在枪主体保持静止的状态下通过按压源相对于枪主体在关闭方向上移动在相对于枪支撑支架的预定位置处。在可动电极头与工件接触之后，固定电极尖端通过枪主体相对于可动电极尖端的相对运动而在关闭方向上移动。检测固定电极头与工件接触的位置。该位置存储为教学数据。

2. 发明授权

US5988486A Method of controlling electrode force of spot welding gun 失效
标题翻译：控制点焊枪电极力的方法
公开(公告)号：US5988486A
公开(公告)日：1999-11-23
申请号：US28459
申请日：1998-02-24
申请人： Nobuo Kobayashi , Toshiaki Nagasawa , Hisaya Watanabe , Kouji Oda , Isao Bundou
发明人： Nobuo Kobayashi , Toshiaki Nagasawa , Hisaya Watanabe , Kouji Oda , Isao Bundou
IPC分类号： B23K11/25 , B23K11/31 , B23K5/22 , B23K1/00 , B23K9/12 , B23K37/02
CPC分类号： B23K11/315 , B23K11/255 , B23K11/311 , B23K11/317
摘要： In a spot welding gun which is made up of a gun main body which is operated for equalization by a driving source, a stationary electrode tip which is immovable relative to the gun main body, and a movable electrode tip which is connected to a pressing source, both electrode tips are pressed to a workpiece with an even force, to thereby perform a high quality spot welding. The driving source is controlled such that the electrode force of the stationary electrode tip, by the driving source, to the workpiece becomes substantially zero. In this manner, there occurs no difference in the electrode forces by both the electrode tips to the workpiece.
摘要翻译：在由用于由驱动源均衡的枪主体构成的点焊枪中，相对于枪主体不动的固定电极头和与压力源连接的可动电极头两个电极头以均匀的力压在工件上，从而进行高质量的点焊。驱动源受到控制，使得固定电极头的驱动源对工件的电极力基本上为零。以这种方式，电极尖端与工件的电极力没有差别。

3. 发明授权

US5977505A Electric resistance welding method with unequal force application 失效
标题翻译：电阻不均等的焊接方法
公开(公告)号：US5977505A
公开(公告)日：1999-11-02
申请号：US034009
申请日：1998-03-02
申请人： Nobuo Kobayashi , Isao Bundou , Toshihiro Murakawa , Kouji Oda , Toshiaki Nagasawa
发明人： Nobuo Kobayashi , Isao Bundou , Toshihiro Murakawa , Kouji Oda , Toshiaki Nagasawa
IPC分类号： B23K11/24 , B23K11/11 , B23K11/16 , B23K11/31 , B23K11/10
CPC分类号： B23K11/317 , B23K11/16 , B23K11/31 , B23K11/311 , B23K11/315
摘要： When a workpiece which is made up by laminating a plurality of plates of different thicknesses is welded by using a spot welding gun having a pair of electrode tips, the electrode force to the workpiece by one of the electrode tips, which is positioned on the side of a thinner plate, is made larger that the electrode force to the workpiece by the other of the electrode tips. The contact pressure on the side of the thinner plate becomes larger with the result that the contact resistance decreases. Therefore, the nugget on the side of the thinner plate becomes smaller than the nugget on the side of the thicker plate.
摘要翻译：通过使用具有一对电极头的点焊枪对通过层叠多个不同厚度的板构成的工件进行焊接时，通过位于一侧的电极头之一对工件施加电极力更薄的板，使得电极通过另一个电极尖端对工件的力较大。更薄板侧面的接触压力变大，接触电阻降低。因此，较薄板侧面的熔核变得比厚板侧面的熔核小。

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