Mtu Aero Engines Gmbh

Mtu Motoren-Und Turbinen-Union M&uuml;nchen Gmbh

Arndt Glaesser

Stefan Heinrich

Goetz Lebkuechner

Georg Muschal

Reimund Haimerl

Rupert Stelzer

Peter Metzinger

A method for the milling machining of components is disclosed. The method produces recesses with one or more lateral walls, in particular for the production of integrally bladed rotors for gas turbines, the recesses forming flow channels and the lateral walls forming blade surfaces of an integrally bladed rotor. The component to be machined by milling is clamped in a locating device for the milling machining. To adjust the vibrational properties of the component to be machined by milling, areas of the component are embedded in and/or filled with a machinable plastic.

Method of damping vibrations during a machining operation

In a method for cutting freeform surfaces, a workpiece is cut by a cutting tool such that a desired freeform surface may be achieved, the cutting tool for cutting purposes being moved along at least one defined cutting path relative to the workpiece. A cutting tool is used, the tool head of which has a greater radius than a tool shank of the cutting tool.

Method for cutting freeform surfaces, cutting tool and use of the cutting tool

A process and apparatus for the manufacture of adapted, fluidic surfaces on a gas turbine blade is disclosed. In an embodiment, the process includes: (a) generating a nominal milling program for the manufacture of fluidic surfaces in the region of one flow inlet edge and/or one flow outlet edge for an ideal gas turbine blade; (b) measuring the area of an actual gas turbine blade in the region of one flow inlet edge and/or one flow outlet edge thereof; (c) generating a milling program adapted to the actual gas turbine blade, where measured values determined in step (b) are used to adapt the nominal milling program generated in step (a) to the milling program for the actual gas turbine blade; and (d) manufacturing of the fluidic surfaces on the actual gas turbine blades by milling with the use of the milling program generated in step (c).

Method and apparatus for the manufacture of a surface on a gas turbine blade

In a milling method for producing a structural component from a raw material by chip-cutting, a milling tool is moved along at least one defined tool path for the milling. In addition to the at least one tool path, at least one collision contour is also defined. The position or orientation of the milling tool relative to the collision contour(s) is monitored. The position or orientation of the milling tool is changed and/or an error message is generated if at least one of the collision contours is damaged, i.e. intersected, by the milling tool.

Milling method for the production of components

A method and a device for cutting freeform surfaces is disclosed. In 5-axis cutting, a workpiece is milled by a tool, i.e., a milling cutter, in such a way that a desired freeform surface is obtained. The tool is moved for cutting along at least one tool path, i.e., cutting path, defined on the basis of interpolation points in relation to the workpiece. According to this invention, a tool vector in the form of leading angles and setting angles is defined for each interpolation point on the tool path. For each interpolation point a normal vector is determined from the leading angles and the setting angles and also from a drive vector determined for each interpolation point. The normal vector in each interpolation point on the tool path is used for a 3D-radius correction for equalizing/compensating for deviations in dimensions of the milling cutter.

Method and device for cutting freeform surfaces by milling

A workpiece is milled by a tool of a milling machine to form a desired freeform surface. For this purpose, the tool is moved relative to the workpiece along at least one tool path defined via support points. The support points of the or each tool path are defined either in workpiece coordinates or in machine coordinates. For each tool path, at least one spline is produced in connection with the support points. The or each spline is output to a control arrangement of the milling machine, which controls the motion of the tool along the or each tool path on the basis of the or each corresponding spline.

Method and device for milling freeform surfaces

In a method and a device for cutting freeform surfaces, a workpiece is cut by a tool or a cutter to produce a desired freeform surface. For the purpose of cutting, the tool is moved along at least one defined tool path or cutting path relative to the workpiece. In addition to the, or each tool path, at least one guide curve is defined for a tool vector of the tool, the tool vector being oriented as a function of the, or each guide curveduring the cutting.

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.

Milling method used for producing structural components

A method for producing matched surfaces on rotor units with integral blades comprising a hub and at least one blade ring, by removing by machine after integral joining with component overmeasure in the area of the joining zone, whereby at least one actual surface is acquired by measuring method, and a surface matching it, is produced. Acquisition by measuring method and production take place on a process machine in one clamping of the rotor unit. The desired surface of each processing area is provided in the form of stored data. Starting from at least one measured actual surface, a matched surface is produced beyond the joining zone, with the surface everywhere adjoining the actual surface and/or a so-called repair surface of which there is at least one, without any kinks or steps at a specifiable minimum curvature. As far as is possible, the surface itself corresponds to a mathematically continuous spatial surface comprising a locally and/or direction-dependent variably-specifiable minimum curvature, whereby approximation to the desired profile takes precedence over approximation to the desired position.

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Dachau, Germany

Arndt Glaesser