Method and apparatus for machining a blank from all directions in a machine tool or milling machine
AssigneeALSTOM Technology Ltd
InventorsFranz Killer, Josef Scherer
Life of this patent
Estimating the term…
Abstract
The corresponding machine tool or milling machine for carrying out the method described has a milling spindle which is displaceable in three spatial directions and with which the workpiece can be machined in a machining region, the machine tool or milling machine having at least one mounting slide, with which the workpiece, for the first machining step, can be mounted in gripping adapters. Furthermore, the machine tool or milling machine has at least one rocker, with which the partly machined workpiece can be mounted by means of at least one special gripping adapter in the first, finally machined region of the workpiece for the second machining step.
Claims39
A method of milling a blank from all directions using at least one machine tool, the method comprising:
- a first machining step in which the blank is held by at least one gripping adapter and a first region is given a final partial shape by the machine tool, with the final partial shape corresponding to an intended use;
- and
- a second machining step in which the partly machined blank is held in the first region by at least one special gripping adapter, and a remaining region is given a final overall shape by the machine tool corresponding to the intended use;
- wherein the first machining step leaves unmachined projecting portions on the final partial shape at a tip part and a root part.
A machine tool for milling a blank from all directions using a method comprising a first machining step in which the blank is held by at least one gripping adapter and a first region is given a final partial shape by the machine tool, with the final partial shape corresponding to an intended use, and a second machining step in which the partly machined blank is held in the first region by at least one special gripping adapter, and a remaining region is given a final overall shape by the machine tool corresponding to the intended use, the machine tool comprising:
- a milling spindle that is displaceable in three spatial directions and with which the blank can be machined in a machining region;
- at least one mounting slide comprising gripping adapters with which the blank can be mounted for the first machining step;
- at least one rocker comprising at least one special gripping adapter with which the partly machined blank can be mounted in the first region for the second machining step.
A method of milling a blank from all directions using at least one machine tool, the method comprising:
- a first machining step in which the blank is held by at least one gripping adapter and a first region is given a final partial shape by the machine tool, with the final partial shape corresponding to an intended use;
- and
- a second machining step in which the partly machined blank is held in the first region by at least one special gripping adapter, and a remaining region is given a final overall shape by the machine tool corresponding to the intended use;
- wherein the final overall shape is selected from the group consisting of a turbine blade, a guide blade, and a moving blade;
- and
- wherein the final partial shape comprises a tip of the blade, an airfoil region of the blade and a root of the blade.
A method of milling a blank from all directions using at least one machine tool, the method comprising:
- a first machining step in which the blank is held by at least one gripping adapter and a first region is given a final partial shape by the machine tool, with the final partial shape corresponding to an intended use;
- and
- a second machining step in which the partly machined blank is held in the first region by at least one special gripping adapter, and a remaining region is given a final overall shape by the machine tool corresponding to the intended use;
- wherein in the first machining step the blank is held in two gripping adapters that grip the blank at a tip and a root thereof, and the first region is processed in an exposed portion between the two gripping adapters.
A method of milling a blank from all directions using at least one machine tool, the method comprising:
- a first machining step in which the blank is held by at least one gripping adapter and a first region is given a final partial shape by the machine tool, with the final partial shape corresponding to an intended use;
- and
- a second machining step in which the partly machined blank is held in the first region by at least one special gripping adapter, and a remaining region is given a final overall shape by the machine tool corresponding to the intended use;
- wherein after the first machining step with a milling spindle, the partly machined blank is automatically gripped by the at least one special gripping adapter in the first region, the at least one gripping adapter is released and moved out of a working region of the milling spindle, and the partly machined blank, while being mounted in the special gripping adapter, is given the final overall shape with the same milling spindle;
- and
- wherein the at least one special gripping adapter is fastened to at least one rocker that is rotatable about a second axis and that in turn is arranged on a rocker slide unit displaceable along a third axis and mounted so as to be rotatable about the third axis, with the rocker also being displaceable perpendicularly to the third axis.
Dependencies are inferred from the claim text.