Big Size Hot Ring Laser Measurement Technology Research

Large ring a blank under high temperature rolling forming, for control ring ablank shape, size, need to be one of the ring online measurement, being measuredthe temperature and high environment, it is difficult to use the traditional contactmeasurement method for the measurement, the laser non-contact measurementmethod; This task is to study a large ring laser non-contact measurementtechnology, high temperature condition measurement is the key factor.The maincontents are as follows:1. This paper Reviews with non-contact measurement method contact, to theadvantage of non-contact measurement explained, that the laser displacementmethod of the research situation and development trend.2. This paper reviews the laser displacement sensor composition and workingprinciple, and analyses the laser thickness principle and caliper principle.3. To ring a online measurement device design, including rotary tables andsensor position adjustment institutions.4. Analyzes the main factors affecting the measurement precision, the paperanalyses the ring rolling temperature and temperature on the environment itself theinfluence of measurement, and finally puts forward the main measures to improvemeasurement accuracy.5. Finally on measuring data processing, by the least square method tocalculate the least square round radius and roundness error; Measure the thicknessof the value of one week, the data processing concluded that the average thicknessvalue, maximum thickness and minimum thickness.