-
公开(公告)号：US5868208A
公开(公告)日：1999-02-09
申请号：US671688
申请日：1996-06-28
IPC分类号： B23B45/16 , B23D29/00 , B23D47/12 , B23Q5/04 , B23Q11/04 , B24B47/10 , B24B47/12 , B25B21/02 , B25B23/157 , E21B3/03 , B25D16/00
摘要： A power tool has a drive mechanism with an output shaft which performs an intermittent rotary motion. The output shaft drives, via an overrunning clutch, a tool drive shaft to drive a tool, which thus performs a quasi-continuous rotary motion that, as the load on the machine increases, transitions increasingly into a discontinuous rotary motion. The power tool can advantageously be used as a hand-held power tool for screwing, drilling, sawing, sanding, and the like, a high output torque with a low reaction torque being achievable as a result of the intermittent drive mechanism.
摘要翻译： 电动工具具有带有执行间歇旋转运动的输出轴的驱动机构。 输出轴通过超越离合器驱动工具驱动轴来驱动工具，从而执行准连续旋转运动，随着机器上的负载增加，其将逐渐转变为不连续的旋转运动。 电动工具可以有利地用作用于旋转，钻孔，锯切，打磨等的手持式电动工具，具有由于间歇驱动机构而可实现的低反作用转矩的高输出扭矩。
-
公开(公告)号：US5062743A
公开(公告)日：1991-11-05
申请号：US550731
申请日：1990-07-10
申请人： Dietrich Wieland , Martin Kalb , Werner Grupp , Michael Nothofer
发明人： Dietrich Wieland , Martin Kalb , Werner Grupp , Michael Nothofer
CPC分类号： B23Q11/04 , B23Q15/24 , B25H1/0071 , G05B2219/37285 , G05B2219/45129 , G05B2219/50184 , Y10T408/14 , Y10T408/172 , Y10T408/18 , Y10T408/21 , Y10T408/554 , Y10T408/6779
摘要： In a drilling device, a holder is provided that is displaceable with respect to a foot in a feed direction. A drilling machine tool is carried by the holder. An electromotor provides a feed drive for driving the holder in the feed direction. The drilling machine tool and/or the holder are displaceable relative to the feed drive in an opposite direction to the feed direction by overcoming a counterforce. A switching element monitors the relative displacement and enables a signal to be derived for stopping the feed drive if a predetermined value of counterforce is exceeded. Motor current is limited to a predetermined maximum value during operation of the device.
摘要翻译： 在钻孔装置中，设置有可相对于脚沿进给方向移位的保持器。 钻机由支架承载。 电动机提供用于沿进给方向驱动保持器的进给驱动器。 通过克服反作用力，钻孔机床和/或保持器可以相对于进给驱动器在与进给方向相反的方向上移位。 开关元件监测相对位移，并且如果超过预定的反作用力值，则能够导出用于停止进给驱动的信号。 在设备运行期间电动机电流被限制在预定的最大值。
-
公开(公告)号：US4847721A
公开(公告)日：1989-07-11
申请号：US86190
申请日：1987-08-12
CPC分类号： H02H7/093 , Y10T307/793
摘要： A safety device for a tool powered by an electric motor. It has a main switch, electronic controls, and a tachometer-generator. In order to provide a device for switching off a motor as a function of motor speed that is simple and economical and that will retain the same nominal switch-off value for the total life of the device, a relay is wired in parallel with the motor and controls the supply of power to the motor through a relay contact.
摘要翻译： 用于由电动机驱动的工具的安全装置。 它有一个主开关，电子控制和转速计发电机。 为了提供一种简单经济的马达速度关断装置，并且在整个使用寿命期间保持相同的额定开关值，继电器与马达并联连接 并通过继电器触点控制电机的电力供应。
-
公开(公告)号：US4739435A
公开(公告)日：1988-04-19
申请号：US822059
申请日：1986-01-24
申请人： Michael Nothofer
发明人： Michael Nothofer
CPC分类号： H02H7/093
摘要： A safety device for an electric power tool, especially a portable tool. It has a main switch, electronic controls, a tachometer-generator, and a relay. The relay electrically parallels the motor, acts on the supply of current to the motor through a relay contact, and is activated through the tachometer-generator and through a subsequent safety circuit. To provide a means of switching off the motor at excessively high speeds that will be inexpensive to manufacture and that will maintain a constant switch-off reference speed throughout its life, the safety circuit consists of a synchronization stage, an adjustable timer stage, a processing stage, an ignition amplifier, and an output section.
摘要翻译： 一种用于电动工具的安全装置，特别是便携式工具。 它有一个主开关，电子控制，转速计发电机和继电器。 继电器电动并联电机，作用于通过继电器触点向电机供电，并通过转速计发电机和随后的安全电路启动。 为了提供以过高的速度关闭电动机的手段，其制造成本便宜，并且在其整个寿命期间将保持恒定的关断参考速度，安全电路包括同步级，可调定时器级，处理 级，点火放大器和输出部分。
-
-
-
搜索结果
4 条记录 (耗时 0.021 秒)
