Research On Optimum Structural Design And Laser Welding Process Of Typical Components Of Clutch

In view of the safety problems of the riveted typical components(combined components of drive plate and driven plate)of clutch during work,according to the design requirements of the new components proposed by the company,laser welding technology is adopted instead of the traditional riveting technology.The research on optimum structural designing,laser welding process optimization,product trial production and performance testing of typical components of clutch were carried out.The research results provide the theoretical basis and technical support for the production platform technical transforming and product upgrading of typical components of clutch.The finite element analysis of the new structure of typical components of clutch was carried out by using ANSYS Workbench software.The analysis results show that the maximum stress of the new structure occurs in the drive plate under heavy load,the value is 247 MPa.The maximum stress of the riveted typical components occurs in the rivet under heavy load,the value is 524 MPa.The first natural frequency of the new structure is 205.09 Hz,and the first natural frequency of the riveted typical components is 129.01 Hz.Response surface methodology was used to carry out multi factor optimal combination test.Taking the maximum tensile strength of the weld as the optimization goal,the optimal laser welding process parameters were obtained: laser power 3.2 kW,welding speed 2 m/min,and defocus 2 mm.Using SYSWELD and Visual-Environment welding simulation software,the finite element numerical simulation of the laser welding process of typical components of clutch was carried out using the optimized laser welding process parameters.The preheating temperature of 300 degrees Celsius before welding is simulated.The residual stress of typical components of clutch is reduced to 497 MPa,and the welding distortion is reduced to 0.93 mm.Compared with the sample without preheating before welding,the residual stress was reduced by 13.7%,and the welding distortion was reduced by 30.1%.The optimal laser welding process parameters and the method of 300 degrees Celsius preheating was used to trial-manufacture typical components of clutch.Bench test results show that: In all test items,all technical indicators of the new typical components of clutch can meet the test standards.The new typical components of clutch meet the requirements of the company.