Development of a Laser-Guided Deep-Hole Evaluating Probe: For 100 to 600 mm Diameter Hole

Abstract

A probe is designed and fabricated that can measure the diameter, roundness, cylindricity and straightness of deep holes with 100 to 600 mm diameter. To improve detection accuracy, CCD cameras are used to detect the probe position and inclination instead of the position-sensitive detectors used in earlier probes. Measurements are made by precisely feeding a workpiece over the probe using a servomotor. The measurements show that the probe can measure the diameter, roundness, cylindricity and straightness of a deep hole with one scan, with good correlation with measurement made by alternative reliable measuring devices.