Hydraulic expansion chuck and method for producing such an expansion chuck
AssigneeKennametal Inc.
InventorJosef Konrad Herud
Life of this patent
Estimating the term…
Abstract
Hydraulic expansion chuck with a basic body, with an expansion bush which is received in the basic body and defines a reception space for a tool to be clamped, and with a pressure chamber which is delimited between the expansion bush and the basic body. A securing pin extends through the basic body and the expansion bush into the reception space. Also broadly contemplated herein is a method for producing a hydraulic expansion chuck via: providing a basic body with a blind hole, into which an internal thread is cut. An expansion bush is then soldered into the basic body. Finally, an orifice is made at the bottom of the blind hole and extends through the material of the expansion bush into a tool reception space which is delimited in the expansion bush.
Claims17
A method of producing a hydraulic expansion chuck, said method comprising:
- providing a basic body;
- disposing an expansion bush in the basic body, wherein the expansion space defines therewithin a reception space for receiving a tool to be clamped;
- wherein said disposing comprises securing the expansion bush and the basic body with respect to one another at a connection region, to prevent relative axial movement of the expansion bush and basic body with respect to one another;
- and
- providing an orifice which extends through material of the expansion bush and into the reception space, wherein the orifice extends through the connection region.
A method of producing a hydraulic expansion chuck, said method comprising:
- providing a basic body;
- disposing an expansion bush in the basic body, wherein the expansion space defines therewithin a reception space for receiving a tool to be clamped;
- providing an orifice which extends through material of the expansion bush and into the reception space;
- introducing a butt plug into the reception space;
- and
- disposing a securing pin through the orifice until the securing pin bears against the butt plug.
Dependencies are inferred from the claim text.