NF ISO 230-4
Test code for machine-tools - Part 4 : circular tests for numerically controlled machine tools
ISO 230-4:2005 specifies methods of testing and evaluating the bi-directional circular deviation, the mean bi-directional radial deviation, the circular deviation and the radial deviation of circular paths that are produced by the simultaneous movements of two linear axes. Its objective is to provide a method for the measurement of the contouring performance of a numerically controlled machine tool.
ISO 230-4:2005 specifies methods of testing and evaluating the bi-directional circular deviation, the mean bi-directional radial deviation, the circular deviation and the radial deviation of circular paths that are produced by the simultaneous movements of two linear axes. Its objective is to provide a method for the measurement of the contouring performance of a numerically controlled machine tool.
This document provides methods for the determination of the contouring performance of numerically controlled machine tools. This document specifies methods of testing and evaluating the bi-directional circular error, the mean bi-directional radial error, the circular error and the radial error of circular paths that are produced by the simultaneous movements of two linear axes. This document also specifies methods of testing the deviations of the circular or constant radius trajectories generated by any combination of simultaneously controlled (coordinated) linear and rotary axes. The basic principle of these tests is to coordinate the multiple axes of motion (combination of rotary and linear axes) to keep the relative position between the tool and the workpiece constant. This document describes differences between circular errors and radial errors (Annex A), influences of typical machine errors on circular paths executed with two linear axes (Annex B), precautions for test set-ups for circular tests with rotary axes (Annex C), an example of adjustment of diameter and contouring speed for circular tests (Annex D), and circular tests using feedback signal (Annex E).
- Avant-proposiv
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1 Domaine d'application1
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2 Références normatives1
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3 Termes et définitions1
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4 Conditions d'essai4
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4.1 Environnement d'essai4
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4.2 Machine à soumettre à l'essai4
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4.3 Mise en température de la machine4
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4.4 Paramètres d'essai5
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4.5 Étalonnage de l'instrument de mesure5
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4.6 Incertitude de mesure5
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5 Mode opératoire d'essai6
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6 Présentation des résultats6
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7 Points soumis à accord entre le fournisseur/constructeur et l'utilisateur6
- Annexe A (informative) Différences entre les écarts de circularité G et G(b) et les écarts radiaux F et D9
- Annexe B (informative) Influence des écarts typiques de la machine sur les trajectoires circulaires10
- Annexe C (informative) Réglage du diamètre et de l'avance en contournage15
- Annexe D (informative) Essais de circularité utilisant le signal de reprise de position16
- Bibliographie17
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