Milling method used for producing structural components
AssigneeMTU Aero Engines AG
InventorArndt Glaesser
Life of this patent
Estimating the term…
Abstract
A milling method is for producing milled structural components of materials that are difficult to machine by chip-cutting. A milling tool with a tool radius is rotationally driven about an axis of the milling tool to ensure a central rotation thereof, whereby a reference point of the milling tool preferably lying on the axis is moved on several curved paths, whereby the paths preferably comprise different curvatures, and whereby the milling tool is moved on the paths with a radial miller feed relative to the material. The curvature at each path point of each path is determined in such a manner that an optimized or maximized circumferential contact of the milling tool is ensured for each path point.
Claims13
Milling method for the production of a structural component from a material, while producing a depression with at least one sidewall, whereby a milling tool having a tool radius is rotationally driven about an axis of the milling tool to carry out a central rotation thereof, whereby a reference point of the milling tool lying on an axis of the milling tool is moved on several curved paths, whereby the paths respectively comprise different curvatures, and whereby the milling tool is moved with a radial miller feed relative to the material on the paths, characterized in that, after reaching a maximum permissible circumferential contact of the milling tool with the material, the curvature at each path point of each path is determined dependent on the tool radius of the milling tool, the depression to be milled, and a milling contour of an immediately previously followed one of the paths, in such a manner so that at each path point the circumferential contact of the milling tool with the material is optimized to the maximum permissible circumferential contact.
A method of milling a material to produce a milled structural component, said method comprising the steps:
- a) rotating a milling tool about a tool axis of the milling tool;
- and
- b) while the milling tool is rotating, advancing the milling tool successively along plural successive milling paths in the material so as to mill a depression into the material by cutting chips from the material with the milling tool;
- wherein:
- each one of the successive milling paths respectively has a respective beginning portion, a respective curved main milling portion, and a respective exit portion in succession,
- the respective curved main milling portions of the successive milling paths respectively have different curvatures relative to one another,
- in the beginning portion of each respective one of the milling paths, the milling tool is advanced into the material beginning from a zero value of a circumferential contact between the milling tool and the material, up to a maximum value of the circumferential contact,
- in the main milling portion of each respective one of the milling paths, the respective curvature thereof is determined so that the milling tool is advanced along the respective main milling portion while maintaining the maximum value of the circumferential contact between the milling tool and the material, and
- in the exit portion of each respective one of the milling paths, the milling tool is withdrawn from the material while reducing the circumferential contact between the milling tool and the material from the maximum value to the zero value.
Dependencies are inferred from the claim text.