Expansion chuck
AssigneeKennametal Inc.
InventorsJosef K. Herud, Ruy Frota de Souza Filho
Life of this patent
Estimating the term…
Abstract
The invention relates to a 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 chucked, and with a pressure chamber which is delimited between the expansion bush and the basic body, at least one solder region being provided, in which the expansion bush is soldered to the basic body, wherein, between the pressure chamber and the solder region, a seal is provided which is formed by an at least essentially fluid-tight bearing contact of the expansion bush against the basic body.
Claims16
A hydraulic expansion chuck, comprising:
- a basic body;
- an expansion bush which is received in the basic body and defines a reception space for a tool to be chucked, wherein the expansion bush includes a press portion and a solder portion adjacent thereto;
- a pressure chamber which is delimited between the expansion bush and the basic body, a solder region being provided in which the expansion bush is soldered to the basic body, wherein between the pressure chamber and the solder region a seal is provided which is formed by an at least essentially fluid-tight bearing contact of the expansion bush against the basic body;
- and
- wherein the seal is formed by a press fit between the expansion bush and the basic body by the press portion of the expansion bush which is larger in diameter than the solder portion of the expansion bush.
A hydraulic expansion chuck, comprising:
- a basic body;
- an expansion bush which is received in the basic body and defines a reception space for a tool to be chucked, wherein the expansion bush includes a press portion and a first solder portion adjacent thereto;
- a pressure chamber which is delimited between the expansion bush and the basic body;
- a first solder region and a second solder region in which the expansion bush is soldered to the basic body, wherein between the pressure chamber and the first solder region and the second solder region a first seal and a second seal, respectively, are provided, wherein the first seal and the second seal are formed by an at least essentially fluid-tight bearing contact of the expansion bush against the basic body;
- wherein the first seal is formed by a press fit between the expansion bush and the basic body by the press portion of the expansion bush which is larger in diameter than the first solder portion of the expansion bush;
- and
- wherein the second seal is formed by a bearing portion which projects axially with respect to the second solder region lying next to it.
A hydraulic expansion chuck, comprising:
- a basic body;
- an expansion bush which is received in the basic body and defines a reception space for a tool to be chucked;
- a pressure chamber which is delimited between the expansion bush and the basic body;
- a first solder region and a second solder region in which the expansion bush is soldered to the basic body, wherein between the pressure chamber and the first solder region and the second solder region a first seal and a second seal, respectively, are provided, wherein the first seal and the second seal are formed by an at least essentially fluid-tight bearing contact of the expansion bush against the basic body;
- wherein the first seal is formed by a press fit between the expansion bush and the basic body by a press portion which differs in diameter from the diameter of the first solder region lying next to it;
- wherein the second seal is formed by a bearing portion which projects axially with respect to the second solder region lying next to it;
- and
- wherein the expansion bush is provided with a thread that is configured such that the expansion bush is screwed into the basic body, and wherein the second solder region extends into the thread.
Dependencies are inferred from the claim text.