Development of a Laser-Guided Deep-Hole Measurement System

Improvement of the system for a small sized hole

Abstract

he present study aims to measure small-size holes with diameters of 17- 24 mm and depth of 1,000 mm. The system consists of a laser interferometer to detect hole accuracy, a probe connected to a measurement bar and an optical apparatus to detect probe attitude (position and inclination). The probe is supported by skids. The probe position at the skids is continuously detected by the optical apparatus and compensated from the data acquired by the laser interferometer. In this study, the system was improved, and performance test was carried out. Experimental results show that deep hole with a diameter of 17.5 mm and length 425 mm can be measured using the system. Measurement accuracy is 0.01 mm