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ISO 230-10-2011 pdf free download
ISO 230-10-2011 pdf free download.Test code for machine tools — Part 10:Determination of the measuring performance of probing systems of numerically controlled machine tools
Code d’essai des machines-a utils — Partie 10: Determination des performances de mesure des systèmes
de palpage des machines-outils a comma nde numérique.
Probes used on machining centres for the probing of worlpiece are typically connected to the machine tool spindle. For many probing applications, the centre of the stylus tip should be located on the spindle axis average line in order to allow for proper identification of the workpiece coordinate system with respect to the machine coordinate system. In other typical applications (for example: measurement of the distance between two nominally parallel machined surfaces, measurement of the diameter of a hole or a boss. etc.), where the alignment of the stylus tip to the spindle axis average line is not of primary concern, care should be taken to ensure that the spindle orientation with respect to the MCS does not change during subsequent probing in order to avoid the stylus tip offset becoming a significant component of probing error.
Prior to test execution, stylus tip on-centre adjustment shall be performed according to the manufacturer’slsuppliers instructions. The adjustment procedure shall be repeated whenever the stylus system connection to the probe is altered. This includes disassembling and re-assembling the same stylus tip as different assembling torques can possibly change the stylus tip centre position.
Probing system qualification shall be performed according to the manufacturer’sisupplier’s instructions and shall be repeated after stylus tip on-centre adjustment.
Suppliers’ technical literature sometimes refers to probing system qualification with the expression “probing system calibration: this expression is not appropriate and should be avoided.
Tests In this part of ISO 230 are presented assuming that the probing system Is aligned with the machine tool Z-axis of motion and that the stylus tip centre is aligned with the spindle axis average line, assumed to be nominally parallel to the Z-axis of motion. For applications using tilting or indexing heads, for any new orientation, probing system qualification shall be performed again. For such applications, use of ISO 10360-5 is recommended.
The user is free, where applicable, to choose the location in which to mount the reference artefact within the specified measuring volume. However, the reference artefact shall not be placed at a location used for the probing system qualification.
The reference artefact should always be mounted and clamped to ensure sufficient setup rigidity when submitted to the specific probing system switching force, yet avoiding deformation of the artefact. Machine tool probe switching force may vary from as little as 0,2 N for strain gauge switching probes to a few newtons for conventional switching probes. Switching force for the Z-axis direction is typically significantly higher than the X- and Y-axis direction switching force.
6.2 Probing repeatability
Typical workpiece probing systems for machining centres offer measuring capabilities designed to perform quick, simplified in-process measurements and measurement of the workpiece after machining, but whilst still on the machine.ISO 230-10-2011 pdf free download.
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