Measurement method and pipe wall misalignment adjustment algorithm of the pipe butting machine

摘要: Abstract This paper presents a runout measurement method and novel finite grouping to predict optimize the rotational angle translational displacement of butting pipes minimize pipe wall misalignment (PWM). study develops PWM excluding positions welding seams. In this method, data are divided into groups criteria created identify seams eliminate effect Finally, optimized PWM. A machine is designed implement method. The benchmarked by standard smooth system errors. Three experiments have been performed with welded diameter 406 mm. comparison shows that computation results agree experimental very well. maximum PWMs in three less than 1.87 mm, which satisfies requirements, is, 2.0 mm. Then, uncertainties discussed.