| 摘要 |
A sensing head is disclosed which includes an overload protection arrangement against excessive deflection of a sensing pin of the sensing head. This overload protection system includes a recess defined in the sensing head casing and an end piece carried by a receiving mandrel, which end piece is sized to fit within the recess and is shaped as a truncated cone. The spatial centering of the sensing head casing with respect to the machine spindle, which is defined by the axis of the receiving mandrel, is accomplished by precision bearings. A spring washer is provided which establishes a closed linkage connection between the receiving mandrel and the sensing head casing.
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