| 摘要 |
The present collet liner is fabricated from a precision rod of less hard material than the hard material of a collet to interpose and coact radially within the collet barrel. The liner has an inwardly directed common rod portion which is externally threaded at its rear end while the front end has three symmetrical triangular finger sections separated by longitudinal slots which extend inwardly through the finger sections into grooves of three symmetrically disposed sections of a web portion. The externally threaded section is releasably mountable within the internally threaded barrel of the collet having an internally threaded collar. The length of the liner is fixedly secured by fastening flats machined on the externally threaded section abutting the cylindrical base.
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