Tool holder with built-in cavities
AssigneeFranz Haimer Maschinenbau KG
InventorFranz Haimer
Life of this patent
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Abstract
A tool holder having a main body for coupling the tool holder to the spindle of a machine tool and having a damping surface connected thereto for clamping a tool, characterized in that the tool holder has at least one portion shaped in one piece by primary shaping, which in its interior has one or more cavities that form an enclave in the portion shaped by primary shaping.
Claims38
A tool holder comprising:
- a main body, for coupling the tool holder to a spindle of a machine tool;
- a clamping surface connected to the main body for clamping a tool;
- and
- at least one portion of the tool holder is shaped in one piece by primary shaping, which in its interior has one or more cavities that form an enclave in the portion shaped by primary shaping.
A tool holder for chucking a tool shaft by frictional engagement, comprising:
- a main body for coupling the tool holder to a spindle of a machine tool;
- a clamping surface joined to the main body, or a tube part joined to the main body, for fixation of a tool shaft by frictional engagement;
- and
- at least one portion of the tool holder is shaped in one piece by primary shaping, in which an outer connecting channel extends into an interior of the portion and there widens, thrilling at least one cavity.
A method for producing a tool holder having a main body for coupling the tool holder to a spindle of a machine tool and having a clamping surface joined to the main body for fixation and for shrinking in of a tool shaft, the method comprising;
- producing a first portion, comprising the main body, as a rotary part from a solid or from a pre-forged or precast blank, of tool steel;
- and
- constructing a second portion, comprising the clamping surface, which is embodied as a tube part, of individual metal layers that are generated successively on one another, until the clamping surface has a predetermined shape.
A tool holder comprising:
- a main body for coupling the tool holder to a spindle of a machine tool;
- and
- a tube part joined to the main body for thermal or hydraulic chucking of a tool shaft, wherein an outer circumference of the tube part has an induction portion, which comprises a metal that is electrically and magnetically conductive, and a portion located inside the induction portion of the tube part comprises a metal which has a higher coefficient of thermal expansion than the metal comprising the induction portion, and the induction portion and the portion of the tube part located inside the induction portion are both an integral, one-piece component of a circumferential wall of the tube part.
Dependencies are inferred from the claim text.