Expansion sleeves and associated chucks
AssigneeKennametal Inc.
InventorRuy Frota de Souza
Life of this patent
Estimating the term…
Abstract
In one aspect, expansion sleeves for pressure-activated tool holder apparatus are described herein. An expansion sleeve, for example, comprises a first end, a second end and a longitudinal axis extending between the first end and the second end. A first set of fluid chambers are proximate the first end of the sleeve and a second set of fluid chambers are proximate the second end, wherein fluid channels extend along the longitudinal axis to connect radially offset fluid chambers of the first and second sets.
Claims32
An expansion sleeve for pressure activated tool holder apparatus comprising:
- a first end, a second end and a longitudinal axis extending along a bore between the first end and the second end;
- a first set of fluid chambers proximate the first end and a second set of fluid chambers proximate the second end, wherein fluid channels extend along the longitudinal axis to connect radially offset hydraulic fluid chambers of the first and second sets.
A chuck comprising:
- a body including a central bore and an a expansion sleeve positioned in the bore, the expansion sleeve having a first end, a second end and a longitudinal axis extending between the first end and the second end and a first set of expansion chambers are proximate the first end of the sleeve and a second set of expansion chambers are proximate the second end, wherein fluid channels extend along the longitudinal axis to connect radially offset expansion chambers of the first and second sets.
An expansion sleeve for pressure-activated tool holder apparatus comprising:
- a first end, a second end and a longitudinal axis extending along a bore between the first and the second end;
- and
- independent fluid chambers extending between the first end and the second end and radially arranged around the bore.
A chuck comprising:
- a body comprising a central bore;
- and
- an expansion sleeve positioned in the central bore, the expansion sleeve having a first end and a second end and a central axis extending between the first end and the second end and a plurality of independent expansion chambers extending between the first end and the second end and radially arranged around the central axis.
Dependencies are inferred from the claim text.