Measuring machine or machine tool having redundant translatory axes for continuous motion on complex paths

Abstract

The invention relates to a measuring machine or machine tool, or a method for operating such machines, having redundant translatory axes for a substantially continuous motion on arbitrarily complex paths, the longer partial axes each allowing a relatively low-acceleration partial motion over a relatively large measuring or machining space, and the shorter partial axes each performing substantially only the partial motions of an overall motion having a substantially net constant measuring or machining velocity, requiring acceleration beyond a maximum determined or set for each longer partial axis, characterized in that the acceleration of each shorter partial axis determines the potential acceleration during the overall motion having said substantially constant measuring or machining velocity on an arbitrarily complex path, wherein the range of motion of the shorter partial axes as a distance must substantially suffice in order to perform at least one complete change in sign of the velocity of motion at said aspired constant velocity having said maximum acceleration of the longer partial axis, and the maximum velocity of motion of the shorter partial axis must be at least nearly double that of the aspired constant velocity.

Description

technical field [0001] In the development of measuring machines and machine tools, redundant, translationally acting axes are increasingly used, i.e. axes which are constructed one above the other or interact with each other and can move relative to each other in parallel in space, wherein On a base shaft with relatively long play or one or more additional shafts with relatively short play are arranged relative thereto. Background technique [0002] Such axes, which can be moved superimposed redundantly in the same direction, offer the possibility of combining large movement gaps of the base axis with short-range and therefore This is combined with the higher acceleration capability of the lightly constructed additional axle. [0003] An example of such a design is patent EP 594699B1 (Ehlerding). In said patent it is proposed to use parallel-oriented, superimposed axis arrangements in order to be able to achieve high accelerations of the light, short-stroke axes in the ent...

AI Technical Summary

Problems solved by technology

Even the "most severe case" stated therein (paragraph [33], Fig. 4) requires at most the expected machining speed for the additional axis, but this is not specified

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