Due to the shortcomings of poor positioning accuracy,low degree of automation and unreliable clamping,the welding parts often have serious welding deformation.Therefore,in this paper,a high-precision automatic assembly welding fixture scheme is proposed and designed.Firstly,the crane cage framework of construction elevator is analyzed,the assembly and welding process scheme is determined,and the overall scheme of assembly and welding fixture is put forward,which adopts U-shaped layout and is divided into main channel steel frame surface fixture,cage bottom surface fixture,cage top surface fixture and cab surface fixture.Secondly,a special fixture is designed for the structural characteristics of different components of the cage framework,which is suitable for the positioning of components and parts of different types of cage frameworks and the assembly and welding of the whole cage.Finally,the strength of welders is checked by finite element method and theoretical calculation.The assembly welding fixture can reduce welding deformation,significantly improve the welding accuracy of the hanging cage framework,improve the production efficiency of the welding production line,and is of great significance to improve product quality,hanging cage operation stability and product competitiveness.
关键词
施工升降机/焊接工装/气动夹具/精度控制/设计
Key words
construction elevator/welding fixture/pneumatic fixture/precision control/design
维普
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