| 摘要 |
An arrangement for mounting a stylus (9) on a stylus support (19) for a metrological instrument includes a camming pin (65) on a mounting disc (21) of the stylus support (19), which passes through a mounting hole (53) in a mounting disc (45) of the stylus (9). A spring (51) applies a sideway force to a sloping cam surface (71) of the camming pin (65), which is converted into a force pulling the camming pin (65) through the mounting hole (53) and thus holding the mounting discs (45, 21) together. An operator can deform the spring (51) so that it releases the camming pin (65), allowing the stylus (9) to be mounted or dismounted without applying significant force to the pivot bearing of the stylus support (19). If excessive radial force is applied to the stylus arm (43), the spring (51) will ride up the cam surface (71) allowing the stylus (9) to be released from the stylus support (19), thereby avoiding applying extreme forces to the pivot bearing.
|
