| 摘要 |
<p>An operating device for a riveting tool, in particular for driving threaded riveting nuts, comprises a feed system which can be operated for the upsetting operation and which provides the threaded bolts or traction bolts with an axial movement, said system being provided with a cylinder-piston assembly consisting of an upsetting piston and a drive piston. A push rod actuates, by exerting a pressure, a control valve which opens or closes connecting openings for a pressurized medium in the tool. The push rod can move in a plane inclined in relation to the axis of the rod of the control valve and comes in contact, by its rear lower edge, with the front upper face of the rod of the control valve.</p> |
