Messverfahren und -Vorrichtung

Details

Veröffentlichungs-Nr.

EP4790358

Anmeldetag

6. Februar 2025

Veröffentlichung

12. August 2026

Rechtsraum

EP

IPC

G01B5/008, G01B5/28, G01B21/04

Abstract

A method is described of using a directional scanning probe (40, 100,170) that comprises a stylus (12, 42, 68, 102) extending from a probe body (10, 44) and measuring transducers (42) for producing stylus deflection data (a,b,c,) describing the magnitude and direction of stylus deflection. The method comprises using a coordinate positioning apparatus (1) to move the directional scanning probe (40, 100,170) towards an object (6, 60, 71, 126) along an inspection path that is nominally normal to a surface of the object (6, 60, 71, 126), the motion along the inspection path causing the stylus (12, 42, 68, 102) to make contact with the surface of the object (6, 60, 71, 126) and thereafter deflect in a first stylus deflection direction (70, 80, 110) relative to the probe body (10, 44). Stylus deflection data (a,b,c) are collected at a plurality of different collection positions along the inspection path, the plurality of different collection positions having a known separation from each other. The collected stylus deflection data and the known separation of the collection positions are used to calculate a scaling factor for converting stylus deflection data describing a stylus deflection along the first stylus deflection direction (70, 80, 110) into a scaled stylus deflection value. A workpiece (126) may then be measured using the calculated scaling factor. A corresponding apparatus is also described.

Anmelder

Firma

Renishaw plc

Land

🇬🇧 Großbritannien

Fachgebiete