Research on automatic measuring instrument for deep hole

Abstract

Automatic deephole admeasuring apparatus is an automatic synthetical multiparameter instrument which makes use of the automatic crawl capability of pipeline robot to drive the measuring device moving forward and adopts optical measuring method to measure deephole inside diameter, interior surface roughness concentration and straightness accuracy. This apparatus has distinguishability of 1 μm with measuring precision less than 5 μm, range of roughness between 1.6 and 2.0, measuring error between 1/8 to 1/4 grade; straightness accuracy measuring precision of deephole as long as 10 meters is less than 100 μm.