公开(公告)号：US20140014387A1

公开(公告)日：2014-01-16

申请号：US13979237

申请日：2012-01-17

申请人： Mario Costoli ,  Antonio Spagnolo

发明人： Mario Costoli ,  Antonio Spagnolo

IPC分类号： B25F5/00

CPC分类号： B25F5/00 ,  B25B21/00

摘要： A pneumatic screwing device includes a spindle for rotatably supporting a screwing tool, a pneumatically drivable rotor for rotating the spindle and a stator for housing the rotor. A gap is defined between the rotor and the stator to receive pressurised air and a supply conduit in the stator delivers pressurised air to the gap. Discharge conduits in the stator discharge pressurised air from the gap. In order to make the pneumatic screwing device more efficient than known devices, there is provided an expansion chamber in communication with the discharge conduits for expanding the pressurised air, the expansion chamber being positioned on an opposite side of the spindle with respect to the rotor and being in communication with the atmosphere. A switch for switching a screwing direction of the pneumatic screwing device includes seats arranged for engaging with locking elements that are slidably associated with the screwing device for maintaining the switch in an operating position corresponding to a desired screwing direction of the device. In order to make the switch more reliable and easier to handle, three seats are provided that are arranged in sequence, the locking elements engaging in the operating position with two of the three seats.

摘要翻译： 一种气动螺旋装置，包括可旋转地支撑螺丝刀的心轴，用于旋转心轴的气动驱动转子和用于容纳转子的定子。 在转子和定子之间限定了间隙以接收加压空气，并且定子中的供应导管将加压空气输送到间隙。 定子中的排放管道从间隙排出加压空气。 为了使气动旋拧装置比已知装置更有效，提供了一个与排放管道连通的膨胀室，用于扩张加压空气，膨胀室相对于转子位于主轴的相对侧上， 与大气沟通。 用于切换气动旋拧装置的旋转方向的开关包括安置用于与锁定元件接合的座，所述锁定元件可滑动地与所述旋拧装置相关联，以将所述开关保持在与所述装置的期望的拧紧方向相对应的操作位置。 为了使开关变得更可靠和更容易处理，提供了三个座位，这些座椅依次布置，锁定元件与三个座中的两个座接合在操作位置。

公开(公告)号：US09849575B2

公开(公告)日：2017-12-26

申请号：US13979237

申请日：2012-01-17

申请人： Mario Costoli ,  Antonio Spagnolo

发明人： Mario Costoli ,  Antonio Spagnolo

IPC分类号： B25F5/02 ,  B25F5/00 ,  B25B21/00

CPC分类号： B25F5/00 ,  B25B21/00

摘要： A pneumatic screwing device includes a spindle for rotatably supporting a screwing tool, a pneumatically drivable rotor for rotating the spindle and a stator for housing the rotor. A gap is defined between the rotor and the stator to receive pressurized air and a supply conduit in the stator delivers pressurized air to the gap. Discharge conduits in the stator discharge pressurized air from the gap. In order to make the pneumatic screwing device more efficient than known devices, there is provided an expansion chamber in communication with the discharge conduits for expanding the pressurized air, the expansion chamber being positioned on an opposite side of the spindle with respect to the rotor and being in communication with the atmosphere. A switch for switching a screwing direction of the pneumatic screwing device includes seats arranged for engaging with locking elements that are slidably associated with the screwing device for maintaining the switch in an operating position corresponding to a desired screwing direction of the device. In order to make the switch more reliable and easier to handle, three seats are provided that are arranged in sequence, the locking elements engaging in the operating position with two of the three seats.