| Hot simmer elbow is an important part of long-distance oil and gas pipeline route. With therapid development of China’s energy demand, the long-range transport of oil and gas pipelineconstruction has made considerable progress. In recent years, with the construction of the SecondWest-East Gas Pipeline and other national energy strategy channel, large-caliber, high-grade steelhas become the trend of the development of the pipeline construction, increased with pipe graderaise and diameter and position automatically large-scale application of welding equipment in thepipeline construction process, the quality of the groove of the pipeline proposed higherrequirements, because the the groove forming quality is not high, often resulting in the nozzlegroup and produce the wrong side of the welding process and undissolved defects. The hotbending bends groove forming processing quality has become the elbow to the overall qualityand on-site construction of a critical assessment indicators.The large diameter hot simmer elbow beveling machine developed project background,analysis and presentation of the first large diameter hot simmer elbow beveling machinetechnology status at home and abroad. For the problems of the fixed cutting mechanism, a newfloating-cutting mechanism, in theory by theoretical analysis of floating cutting system can beachieved.Analysis by the dynamic theory as well as the principle of metal cutting the floating elbowbeveling method, the floating cutting system model, the application of the system model of thelarge caliber of hot simmer elbow beveling machine floating cutting system dynamicsanalysiscomprehensive utilization dynamics analysis, structural design of floating mechanicalcutting system provides the design basis and the optimization program, the use ofcomputer-aided design software-Inventor2008beveling machine floating-cutting structure designand analysis.Finally, through the experimental verification of the floating-cutting structure, bevel cuttingtests to verify the theoretical correctness of the floating cutting mechanism design is reasonable,smooth groove machining of large diameter heat bending bends.This article is a combination of scientific research, and the use of theoretical and practicalexperience to analyze and study the problem directly combined with the production practice,provides a theoretical basis for further optimization of the product. This article through the use ofmodelling, dynamic analysis and field test on the floating pipe Beveling machine cutting systemswere analysed to determine the best solution, proposed a new method for machining. |
