| 摘要 |
<p>A clamping device for portable grinding machines can be screwed on the terminal thread run-out (13) of the driving spindle (10) in order to tighten a grinding wheel (15). A clamping element (21), a clamping nut (17) that can be screwed on the thread run-out (13) and an approximately disk-like control element (22) are held together forming a complete part, whereby a ring flange (18) of the clamping nut (17) presses a flange (32) of the clamping element (21) against the grinding wheel (15). The complete part contains a gear (30) shaped as a planetary gear, the sun wheel of which is formed by a coaxial pinion gear (31) on the control element (22) and the planetary wheels (37, 38) of which are rotatably mounted on the ring flange (18) of the screwed clamping nut (17). The clamping element (21) carries a ring (39) fixed thereto with inner toothing (40) as a hollow wheel. As soon as the flange (32) frictionally engages the tool (15) when the flange (32) is screwed, a torque increase and axial grip are ensured by the gear (30) with further tightening that can be relatively easily released by hand without any auxiliary tools.</p> |
