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公开(公告)号：US4833952A
公开(公告)日：1989-05-30
申请号：US124660
申请日：1987-11-24
申请人： Dieter Stein , Eugen Mattheiss
发明人： Dieter Stein , Eugen Mattheiss
IPC分类号： B25B23/14 , B25B23/145 , B25B23/157
CPC分类号： B25B23/14 , B25B23/141 , B25B23/145
摘要： A power-operated tool is fitted with a drive, whose driving shaft can, by means of a connecting coupling whose actuation depends on the reaction torque, be coupled with a driven shaft. The connecting coupling first interrupts transfer of the torque to the driven shaft, so that, in spite of the running drive, no torque can be transferred to the driving shaft. Immediately afterwards, the drive is disconnected. As a result of this sequence of disconnections, the motor, which continues running, can no longer have any influence on the work in progress so that the fastener being tightened does not reach the point of plastic deformation.
摘要翻译： 动力操作工具装有驱动器，其驱动轴可以通过其驱动取决于反作用力矩的连接联轴器与从动轴联接。 连接联接器首先中断扭矩传递到从动轴，使得尽管运行驱动，但是没有扭矩可以传递到驱动轴。 之后，驱动器断开连接。 由于这种断开顺序的结果，继续运行的电机不再对正在进行的工作产生任何影响，使得紧固件被紧固不会达到塑性变形的程度。
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公开(公告)号：US4467877A
公开(公告)日：1984-08-28
申请号：US343649
申请日：1982-01-28
IPC分类号： B25B23/145 , B23Q5/06 , F16D43/20
CPC分类号： B25B23/145
摘要： A pneumatic screwdriver or nutsetter includes a manually actuated electrical switch and a solenoid operated motive air shutoff valve which includes a spring biased reset element for moving the shutoff valve closure element from a valve closed position to a valve open position prior to introduction of compressed air to the tool motor. The reset element is retracted away from the closure element by pressurized air upon startup of a tool operating cycle. The closure element is released upon deenergization of the solenoid at a predetermined signal to close the shutoff valve. In an alternate embodiment the switch is replaced by a pneumatic valve and the reset element is pressure air biased to move the shutoff element from the shutoff valve closed position to the open position.
摘要翻译： 气动螺丝刀或螺母装置包括手动致动的电气开关和电磁操作的动力空气截止阀，其包括弹簧偏置的复位元件，用于在将压缩空气引入压缩空气之前将截止阀闭合元件从阀关闭位置移动到阀打开位置 工具电机。 在启动工具操作循环时，复位元件通过加压空气从闭合元件缩回。 闭合元件在螺线管以预定信号断电时释放，以关闭截止阀。 在替代实施例中，开关由气动阀替代，并且复位元件被压力空气偏压以将关闭元件从截止阀关闭位置移动到打开位置。
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公开(公告)号：US4320806A
公开(公告)日：1982-03-23
申请号：US31730
申请日：1979-04-20
IPC分类号： B25B23/145 , B23Q5/06
CPC分类号： B25B23/145
摘要： A pneumatic screwdriver or nutsetter includes a manually actuated electrical switch and a solenoid operated motive air shutoff valve which includes a spring biased reset element for moving the shutoff valve closure element from a valve closed position to a valve open position prior to introduction of compressed air to the tool motor. The reset element is retracted away from the closure element by pressure air on startup of a tool operating cycle. The closure element is released upon deenergization of the solenoid at a predetermined signal to close the shutoff valve. In an alternate embodiment the switch is replaced by a pneumatic valve and the reset element is pressure air biased to move the shutoff element from the shutoff valve closed position to the open position.
摘要翻译： 气动螺丝刀或螺母装置包括手动致动的电气开关和电磁操作的动力空气截止阀，其包括弹簧偏置的复位元件，用于在将压缩空气引入压缩空气之前将截止阀闭合元件从阀关闭位置移动到阀打开位置 工具电机。 在启动工具操作循环时，复位元件通过压力空气从闭合元件缩回。 闭合元件在螺线管以预定信号断电时释放，以关闭截止阀。 在替代实施例中，开关由气动阀替代，并且复位元件被压力空气偏压以将关闭元件从截止阀关闭位置移动到打开位置。
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公开(公告)号：US5217079A
公开(公告)日：1993-06-08
申请号：US756243
申请日：1991-09-06
IPC分类号： B25B21/02 , B25B23/145
CPC分类号： B25B23/1453 , B25B21/02
摘要： A hydro-impulse screwing device comprises a rotary drive motor, a power source for the motor, a drive shaft, a pulsating hydraulic drive connecting the motor to the shaft and a power cut-off for the motor. The load at which the power cut-off functions is adjustable. The tool has a borehole extending through the length of the shaft, a conduit for conducting hydraulic fluid from the drive to the borehole, a valve in the borehole movable from a closed position to an open position in response to hydraulic pressure corresponding to a predetermined load to allow hydraulic pressure from the drive to actuate the power cut-off, a biassing element in the borehole for biassing the valve toward a closed position against the hydraulic pressure, wherein the force of the biassing element is adjusted at the end of the drive shaft to change the load at which the power cut-off operates.
摘要翻译： 液压脉冲旋拧装置包括旋转驱动电动机，用于电动机的动力源，驱动轴，将电动机连接到轴的脉动液压驱动装置和用于电动机的动力切断装置。 断电功能的负载可调。 该工具具有延伸穿过轴的长度的钻孔，用于将液压流体从驱动器传导到钻孔的导管，钻孔中的阀，其响应于对应于预定负载的液压从闭合位置移动到打开位置 以允许来自驱动器的液压来致动动力切断，钻孔中的偏压元件用于使阀朝着液压的关闭位置偏压，其中偏置元件的力被调节在驱动轴的端部 以改变断电操作的负载。
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公开(公告)号：US5060772A
公开(公告)日：1991-10-29
申请号：US394404
申请日：1989-08-15
IPC分类号： B25B21/00 , B25B23/145
CPC分类号： B25B21/00 , B25B23/145 , Y10T477/759
摘要： The power-operated tool, preferably a screw driving implement, includes a switching clutch which transfers the torque from the drive shaft to the output shaft. Upon reaching the given reactive maximum torque, the switching mechanism is activated to turn off the drive. The clutch components are still engaged, so that one torque is transferred to the screw after the unit is turned off. This allows for unsupervised motion upon the output shaft. One should be able to interrupt the torque transfer to the output shaft completely and to return the switching clutch to its original position with certainty and ease. The switching mechanism maintains the valve body of the on-off valve in the open position, with the clutch component of the separating clutch separated by at least one buffer. In this way, the drive shaft continues to operate, allowing the clutch component to return to its original position where it engages the other clutch component of the separating clutch, even following interruption of the torque transfer. The power-operated tool may be designed as a hand-operated screw driver or as a multiple screw driver.
摘要翻译： 动力操作工具，优选地是螺丝驱动工具，包括将扭矩从驱动轴传递到输出轴的切换离合器。 达到给定的无功最大扭矩时，切换机构被激活以关闭驱动器。 离合器部件仍然接合，从而在单元关闭后，一个转矩传递到螺钉。 这允许在输出轴上进行无监督的运动。 应该能够完全中断扭矩传递到输出轴，并确保和轻松地将切换离合器返回到其原始位置。 切换机构将开关阀的阀体保持在打开位置，分离离合器的离合器部件被至少一个缓冲器分离。 以这种方式，驱动轴继续操作，即使在扭矩传递中断之后，离合器部件也能够返回其与啮合分离离合器的另一个离合器部件的原始位置。 动力操作工具可以设计为手动螺丝刀或多螺丝刀。
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