Rotating chuck with power-operated clamping jaws - has measuring pick=up for clamping force coupled to signal generator supplying receiver for evaluator

摘要

The chuck has at least two power operated clamping jaws (5) and at least one measurement pick-up (23) acted on by the clamping force, and connected via at least one transmitter arranged at the chuck for a stationary receiver (20). An evaluation unit is provided for the values received from the pick-up (23). The transmitter and receiver are designed as at least one coil (15, 20) acting to give non-contact data transmission. The coil (15) designed as the transmitter is arranged at the cylinder inner surface (11) of a component (10) rotating with the clamping device (3). The coil (20) designated as the associated receiver is arranged at the outside of a stationary carrier part (19) that lies in a radial direction inside the cylinder inner surface (11) of the component (10). USE/ADVANTAGE - Machine tools. Gives non-contact transmission of data. Unintended contact between coils reliably prevented. Gap between chuck and fixed carier part is narrow is prevent penetration of chips and dust.