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1. 发明授权

US5289886A Automatic screw fastening machine 失效
标题翻译：自动螺丝紧固机
公开(公告)号：US5289886A
公开(公告)日：1994-03-01
申请号：US945852
申请日：1992-09-16
申请人： Osamu Shikata , Hirotada Sugiura , Masatomo Adachi , Kazunori Isono
发明人： Osamu Shikata , Hirotada Sugiura , Masatomo Adachi , Kazunori Isono
IPC分类号： B23P19/06 , B25B21/00 , B25B23/14 , B23Q17/09
CPC分类号： B25B23/14 , B23P19/066 , B25B21/00
摘要： An automatic screw fastening machine embodied by the invention transmits the rotating force of a motor to a driver bit via a differential planetary mechanism consisting of an input disc, a plurality of planetary cones, a cam disc, and a variable-speed ring. The automatic screw fastening machine causes a resilient supporting unit to restrict the variable-speed ring from shifting itself in the axial direction. Furthermore, the machine is provided with a torque detection unit capable of detecting the torque of reaction force applied to the variable-speed ring by effect of the load applied to the driver bit. As soon as the detect-signal value correctly matches a specific value corresponding to the predetermined fastening torque, supply of power to the motor is discontinued. In consequence, when fully completing a screw fastening process, rotation of the driver bit is substantially reduced to zero so that no rotating force can be transmitted to the driver bit. This in turn prevents the driver bit from adversely being affected by own inertia. This permits the driver bit to fully stop own movement simultaneous with the completion of the screw fastening process, the automatic screw fastening machine thus offers incomparable capability to execute every screw fastening process by securely applying the desired fastening torque.
摘要翻译：由本发明实施的自动螺丝紧固机通过由输入盘，多个行星齿轮，凸轮盘和变速环组成的差速行星机构将电动机的旋转力传递给驾驶员钻头。自动螺丝紧固机引起弹性支撑单元限制可变速度环沿轴向自身移动。此外，机器设置有能够通过施加到驾驶员钻头的负载的作用来检测施加到变速环的反作用力的转矩检测单元。一旦检测信号值正确地匹配与预定的紧固扭矩对应的特定值，则停止向马达供电。因此，当完全完成螺钉紧固过程时，驱动钻头的旋转基本上减小到零，使得旋转力不能传递到螺丝刀钻头。这又防止驾驶员位受到自身惯性的不利影响。这样就可以使螺丝刀在完成螺钉紧固工艺的同时完全停止自身的移动，因此，通过牢固地施加所需的紧固扭矩，自动螺丝紧固机器提供无与伦比的能力来执行每一个螺丝紧固过程。

2. 发明授权

US5170852A Automatic screw fastening machine 失效
标题翻译：自动螺丝紧固机
公开(公告)号：US5170852A
公开(公告)日：1992-12-15
申请号：US881145
申请日：1992-05-11
申请人： Osamu Shikata , Hirotada Sugiura , Masatomo Adachi , Kazunori Isono
发明人： Osamu Shikata , Hirotada Sugiura , Masatomo Adachi , Kazunori Isono
IPC分类号： B23P19/06 , B25B21/00 , B25B23/14
CPC分类号： B25B23/14 , B23P19/066 , B25B21/00
摘要： An automatic screw fastening machine embodied by the invention transmits the rotating force of a motor to a driver bit via a differential planetary mechanism consisting of an input disc, a plurality of planetary cones, a cam disc, and a variable-speed ring. The automatic screw fastening machine causes a resilient supporting unit to restrict the variable-speed ring from shifting itself in the axial direction. Furthermore, the machine is provided with a torque detection unit capable of detecting the torque of reaction force applied to the variable-speed ring by effect of the load applied to the driver bit. As soon as the detect-signal value correctly matches a specific value corresponding to the predetermined fastening torque, supply of power to the motor is discontinued. In consequence, when fully completing a screw fastening process, rotation of the driver bit is substantially reduced to zero so that no rotating force can be transmitted to the driver bit. This in turn prevents the driver bit from adversely being affected by own inertia. This permits the driver bit to fully stop own movement simultaneous with the completion of the screw fastening process. The automatic screw fastening machine thus offers incomparable capability to execute every screw fastening process by securely applying the desired fastening torque.
摘要翻译：由本发明实施的自动螺丝紧固机通过由输入盘，多个行星齿轮，凸轮盘和变速环组成的差速行星机构将马达的旋转力传递给驾驶员钻头。自动螺丝紧固机引起弹性支撑单元限制可变速度环沿轴向自身移动。此外，机器设置有能够通过施加到驾驶员钻头的负载的作用来检测施加到变速环的反作用力的转矩检测单元。一旦检测信号值正确地匹配与预定的紧固扭矩对应的特定值，则停止向马达供电。因此，当完全完成螺钉紧固过程时，驱动钻头的旋转基本上减小到零，使得旋转力不能传递到螺丝刀钻头。这又防止驾驶员位受到自身惯性的不利影响。这样可以使螺丝刀位完全停止自身运动，同时完成螺丝紧固工艺。因此，自动螺丝紧固机通过牢固地施加所需的紧固扭矩而提供无与伦比的能力来执行每个螺丝紧固过程。

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