Cutting Bit Retaining Assembly

摘要

A cutting bit retaining assembly for mounting a cutting bit at a cutting machine includes a holder body having a through bore to receive a bit shaft. A retainer acts against the holder body and bit shaft and includes a first and second abutment member that provides a reliable and constant locking force between the body and the shaft.

主权项

1. A cutting bit retaining assembly for mounting a cutting bit at a cutting machine, the assembly comprising:
a holder body having a through bore extending between a forward and a rearward end of the body; a bit shaft attached to the bit head, the bit shaft extending axially through the bore, a rearward region of the bit shaft projecting from the rearward end and including an abutment portion; and a retainer positioned about the rearward region of the shaft to releasably retain the shaft at the body, the retainer having a first and a second abutment member spaced apart in the axial direction of the bore and coupled so as to be resilient to axial compression together, wherein the first abutment member contacts the rearward end of the body and the second abutment member contacts the abutment portion of the shaft to provide a retaining force under compression to retain the shaft at the body.