Sägeblattaufspannvorrichtung für Schneidwerkzeuge

摘要

A blade mounting device is operable for mounting a blade (B) on a drive shaft (21) of a cutting tool (1) which is moved in a predetermined motion for a cutting operation. The blade mounting device includes an operation knob (60) mounted on a body (2) of the cutting tool and adapted to be rotated by an operator. An actuation rod (31) is mounted on the drive shaft (21) and is movable with the drive shaft (21) and rotatable relative to the drive shaft (21). A holder device (4) is mounted on the drive shaft (21) for holding and releasing the blade (B) in response to the rotation of the actuation rod (31) relative to the drive shaft (21). A connection member (64) is rotatable with the operation knob (60) and is disposed on the same axis as the actuation rod (31). A connecting mechanism is provided for connecting the connection member (64) and the actuation rod (31) to each other, so that the connection member (64) and the actuation rod (31) are axially movable relative to each other and are rotatable together with each other. The connecting mechanism includes a shaft (64a) provided on one of the connection member (64) and the actuation rod (31) and includes an axial hole (61b) provided on the other for receiving the shaft.