Chuck for the clamping of tools by shrink fit
AssigneeBilz Werkzeugfabrik GmbH & Co. KG
InventorMichael Voss
Life of this patent
Estimating the term…
Abstract
A chuck for the clamping of tools by shrink fit includes a chuck member which has a longitudinal section having a central receptacle with clamping surface for the insertion and holding of the tool to be clamped with its shank. The longitudinal section includes a plurality of segments arranged at distances from one another in the circumferential direction and separated from each other by clearances in between, the segments extending essentially axially parallel and forming the clamping surface with their inner peripheral areas. The segments are surrounded on the outside by a sleeve part. The segments are either in one piece with the sleeve part or, as separate structural elements, are a component of a mounted insert.
Claims19
A chuck for clamping a tool by shrink fit, comprising:
- a chuck member having a longitudinal section, the longitudinal section including a central receptacle having a clamping surface configured to receive and hold a shank of the tool to be clamped;
- wherein the longitudinal section includes a plurality of segments arranged at distances from one another in a circumferential direction and separated from each other by clearances in between, the segments extending essentially axially parallel, an inner peripheral area of the segments forming the clamping surface, each clearance having a depth in a radial direction that is at least half of a wall thickness of the longitudinal section.
A chuck for clamping a tool by shrink fit, comprising:
- a chuck member having a longitudinal section, the longitudinal section including a central receptacle having a clamping surface configured to receive and hold a shank of the tool to be clamped;
- wherein the longitudinal section includes a plurality of segments arranged at distances from one another in a circumferential direction and separated from each other by clearances in between, the segments extending essentially axially parallel, an inner peripheral area of the segments forming the clamping surface;
- and
- wherein a cross-section of the segments has a shape of radially-aligned rectangular parallelepipeds.
A chuck for clamping a tool by shrink fit, comprising:
- a chuck member having a longitudinal section, the longitudinal section including a central receptacle having a clamping surface configured to receive and hold a shank of the tool to be clamped;
- wherein the longitudinal section includes a plurality of segments arranged at distances from one another in a circumferential direction and separated from each other by clearances in between, the segments extending essentially axially parallel, an inner peripheral area of the segments forming the clamping surface;
- wherein the clearances are formed by radial slits;
- and
- wherein the radial slits enlarge in a radial direction from an inside to an outside.
A chuck for clamping a tool by shrink fit, comprising:
- a chuck member having a longitudinal section, the longitudinal section including a central receptacle having a clamping surface configured to receive and hold a shank of the tool to be clamped, the longitudinal section including a plurality of segments arranged at distances from one another in a circumferential direction and separated from each other by clearances in between, the segments extending essentially axially parallel, an inner peripheral area of the segments forming the clamping surface;
- and
- a sleeve part surrounding the segments on an outside in a radial direction;
- wherein the segments are part of an insert inserted into the sleeve part of the chuck member;
- and
- wherein the insert is formed from a different material than the sleeve part.
A chuck for clamping a tool by shrink fit, comprising:
- a chuck member having a longitudinal section, the longitudinal section including a central receptacle having a clamping surface configured to receive and hold a shank of the tool to be clamped, the longitudinal section including a plurality of segments arranged at distances from one another in a circumferential direction and separated from each other by clearances in between, the segments extending essentially axially parallel, an inner peripheral area of the segments forming the clamping surface;
- and
- a sleeve part surrounding the segments on an outside in a radial direction;
- wherein the segments are part of an insert inserted into the sleeve part of the chuck member;
- and
- wherein the insert is formed from a material having a low thermal conductivity.
A chuck for clamping a tool by shrink fit, comprising:
- a chuck member having a longitudinal section, the longitudinal section including a central receptacle having a clamping surface configured to receive and hold a shank of the tool to be clamped, the longitudinal section including a plurality of segments arranged at distances from one another in a circumferential direction and separated from each other by clearances in between, the segments extending essentially axially parallel, an inner peripheral area of the segments forming the clamping surface;
- and
- a sleeve part surrounding the segments on an outside in a radial direction;
- wherein the segments are part of an insert inserted into the sleeve part of the chuck member;
- and
- wherein the insert is formed from a material having a low coefficient of thermal expansion.
Dependencies are inferred from the claim text.