金属加工（热加工）Issue(4)：65-69,76,6.
可调式管法兰焊接变位机结构设计及有限元分析
Structural design and finite element analysis of an adjustable pipe flange welding positioner
摘要
Abstract
A structural design scheme of an adjustable pipe-flange welding positioner is proposed to address the problems of poor dimensional adaptability and low clamping efficiency of traditional welding positioners in pipe-flange welding.Through modular design,a mobile base,a rail system and a pneumatic self-centering chuck are integrated to realize flexible adjustment of the spacing between the driving end and the driven end,so as to meet the welding requirements of pipes with different lengths.Combined with adjustable roller supports and a pneumatic clamping mechanism,the automation level of the equipment is improved.Structural modeling is carried out using Creo Parametric,and static and thermodynamic simulation analyses are performed based on Creo Simulate to verify the reliability of the structural design.The results show that under two typical working conditions,the maximum structural stresses are 73.05MPa and 104.1MPa,respectively,both lower than the yield strength of 45 steel,with safety factors exceeding 2.5.The maximum displacements are 0.375mm and 0.19186mm,respectively,meeting the welding positioning accuracy requirement(＜0.5 mm).In the simulated welding process,the maximum temperature of the workpiece is 576.672℃,and that of the fixture is 41.7189℃,indicating that the welding heat has little effect on the performance of the fixture.Through modularization and automation,the design effectively improves welding efficiency and reduces fixture requirements and maintenance costs,exhibiting good engineering application prospects in petrochemical,nuclear power and other fields.关键词
焊接变位机/多尺寸适应/管法兰/有限元分析Key words
welding positioner/multi-size adaptation/pipe flange/finite element analysis引用本文复制引用
王耀,贺子杰,刘鑫宇,邱国珍,丁如祺,刘新华..可调式管法兰焊接变位机结构设计及有限元分析[J].金属加工（热加工）,2026,(4):65-69,76,6.基金项目
国家自然科学基金项目(U24A20116). （U24A20116）
