Rotary tool
AssigneeGuehring KG
InventorPeter Haenle
Life of this patent
Estimating the term…
Abstract
The invention relates to a rotary tool (1; 101; 201; 301; 401) for cutting large inside diameters at the outer circumference (2) of which at least one cutting edge (4; 104; 204) is arranged, comprising a support structure (10; 110; 210; 310; 410) which includes a supporting area (14; 114; 214) which indirectly or directly supports the cutting edge (4; 104; 204), and comprising a chucking portion (24; 124; 224; 324; 424) for coupling to a tool holder, wherein the support structure (10; 110; 210; 310; 410) is designed in light-weight construction and the area (14; 114; 214) of the support structure (10; 110; 210; 310; 410) indirectly or directly supporting the cutting edge (4; 104; 204) is limited regarding thermal expansion by a corset structure (12; 112; 212; 312; 412).
Claims26
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 includes a supporting area which indirectly or directly supports the cutting edge, and comprising a chucking portion for coupling to a tool holder, wherein the support structure is designed in light-weight construction and the area of the support structure indirectly or directly supporting the cutting edge is limited with respect to thermal expansion by a corset structure, wherein the corset structure has a thermal expansion coefficient of less than 10E-6 1/K within the temperature range from 0 to 100° C., wherein the corset structure is arranged radially inside the support structure and is connected to the support structure, and wherein the corset structure predetermines a thermal expansion of the area of the support structure supporting the cutting edge.
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 includes a supporting area which indirectly or directly supports the cutting edge, and comprising a chucking portion for coupling to a tool holder, wherein the support structure is designed in light-weight construction and the area of the support structure indirectly or directly supporting the cutting edge is limited with respect to thermal expansion by a corset structure, wherein the corset structure includes Invar as material, wherein the area supporting the cutting edge is connected to a base of the support structure via a radially elastic connecting portion and the base of the support structure is cup-shaped and the radially elastic connecting portion of the support structure includes an inner circumferential groove and/or an outer circumferential groove.
Dependencies are inferred from the claim text.