CHUCK FOR INSTALLATION OF SHAFT WITH KEY SLOT ON CENTRES OF MACHINE Russian patent published in 2025 - IPC B23B31/16 

FIELD: mechanical engineering.

SUBSTANCE: invention relates to machine building, in particular, to means of technological equipment in the form of accessories for metal cutting machines. Chuck comprises a housing with a radial slot made at its first end, with a centring collar made at its second end, and a central hole, rod located in the central hole, a slider with an inclined wedge projection and a cam, a bushing with an inclined wedge slot, coupled with the inclined wedge projection, thrust centre with connecting cone, flange with conical hole, retainer in the form of a pin installed on the cam with possibility of radial movement relative to the above cam from the spring, and a key fixed on the cam. Slider is arranged in radial groove with possibility of radial movement with cam. Flange is installed in the central hole and is fixed on the first end of the housing coaxially with its conical hole relative to the centring band. Thrust centre is coupled by a connecting cone with a conical hole. Bushing is fixed on the rod and is conjugated with the central hole with the possibility of movement along its axis. Key and the pin are made and arranged with the possibility of conjugation with the key slot of the shaft installed with centre holes on the centres of the machine.

EFFECT: higher quality of shaft and simplified design of chuck.

1 cl, 2 dwg