DOOR MOTORISCHE KRACHT BEDIENBAAR KLEMORGAAN.

摘要

A power operated jaw chuck with clamping jaws which can each be operated by a chuck piston movable axially within a bore in a chuck body via a separate wedge-hook transmission comprising wedge surfaces inclined in the axial direction which are formed in the circumferential direction in pairs on the chuck piston and on a wedge hook. In order to obtain higher load-bearing capacity of the wedge hook transmission without increasing the required space, the wedge hook is formed with a T-shaped cross section having a continuous wedge surface for internal clamping on the radially inner base surface and having a web which simultaneously serves as a connecting member with the rear side of the clamping jaw. Ledge-shaped wedge pieces are formed on the chuck piston on both sides of the web. The wedge pieces extend in the circumferential direction of the chuck piston up to the web of the clamping jaw, are supported via their partially cylindrical outer surface in the bore of the chuck body which is provided for the chuck piston, and cooperate for external clamping via an inner wedge surface with respectively each one wedge surface of the wedge hook.