FIELD: machine building.
SUBSTANCE: invention refers to clamping device for contact parts set into initial position. It can be implemented particularly in welding tongs and in systems of disk brakes. The clamping device contains first element (18) and the second element relatively travelling under influence of drive device of screw-nut type. System of compensation (46) is positioned between moving support (14) and first element (18) rigidly connected with nut (12) for repeated installation of this first element (18 ) into an initial working position relative to the second element. The system of compensation consists of compensating disk (68) at rotation rigidly coupled with hub (50) screwed on movable support (14), of measuring disk (80) mounted on moving support (14) by means of mechanism of idle run (76) and of at least one spring (74) for accumulation of force. The spring is installed between compensation disk (68) and measuring disk (80) so, that storage of parts wear condition is facilitated with relative angular position of measuring disk (80) in relation to moving support (14).
EFFECT: compensation of contact parts wear at their operation.
10 cl, 6 dwg
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