Rotary tool
AssigneeGuehring KG
InventorsPeter Haenle, Thomas Bischoff
Life of this patent
Estimating the term…
Abstract
The invention relates to a rotary tool (1; 101; 201) for cutting large inside diameters at the outer circumference (2) of which at least one cutting edge (4) is arranged, comprising a support structure (10; 110; 210) which indirectly or directly supports the at least one cutting edge (4), and comprising a chucking portion (24) for coupling to a tool holder, wherein the support structure (10; 110; 210) widens in an umbrella-type manner starting from a coupling portion (11) adjacent to the chucking portion (24) and is radially stiffened by a stiffening structure (12).
Claims24
A rotary tool for cutting large inside diameters at the outer circumference of which at least one cutting edge is arranged, comprising a support structure which indirectly or directly supports the at least one cutting edge, and comprising a chucking portion for coupling to a tool holder, wherein the support structure widens in an umbrella-type manner or jaw-type manner starting from a coupling portion adjacent to the chucking portion and is radially stiffened by a stiffening structure, wherein the stiffening structure is arranged radially inside the support structure that widens in an umbrella-type manner or jaw-type manner and wherein the stiffening structure is arranged axially offset to the coupling portion, wherein a material of the support structure comprises a fiber-reinforced plastic composite including a matrix system comprising embedded fibers and the fiber-reinforced plastic composite has a thermal expansion coefficient of less than 5 ppm/K in at least one direction transversely to an axis of rotation of the rotary tool.
A rotary tool for cutting large inside diameters at the outer circumference of which at least one cutting edge is arranged, comprising a support structure which indirectly or directly supports the at least one cutting edge, and comprising a chucking portion for coupling to a tool holder, wherein the support structure widens in an umbrella-type manner or jaw-type manner starting from a coupling portion adjacent to the chucking portion and is radially stiffened by a stiffening structure, wherein in an axial direction the support structure is divided at least into a first and a second cutting step each of which supports at least one cutting edge, with a cutting circle diameter of the first cutting step being different from that of the second cutting step.
Dependencies are inferred from the claim text.