塑制离合器泵体的结构设计及焊接参数的确定

Structural Design of a Plastic Clutch Pump Body and Determinationof Its Welding Parameters

为通过“以塑代钢”实现汽车轻量化,面向由上、下泵体经摩擦焊接而成的离合器泵体,经过与上、下泵体为锥面-柱面焊接式结构型式的对比分析,确定采用上、下泵体为端面-端面焊接式的结构型式,并通过材料的性能测试与摩擦面温度试验,建立了上、下泵体焊接参数的耦合模型,依此确定主轴转速、熔接压力和旋转圈数等焊接参数。静力学分析表明,离合器泵体(含焊缝)强度满足设计要求;依焊接参数耦合模型确定焊接参数的10组测试件的试验结果表明,离合器泵体(含焊缝)的承受压力可达到14 MPa设计要求,验证了所设计的塑制离合器泵体结构型式和焊接参数确定方法的正确性和可行性。

To reduce the weight of automobiles by replacing steel with plastics,the structural type of face-to-face welding was applied to the clutch pump body formed by friction welding of the upper and lower pump after a comparative analysis of welding strength between cone to a cylindrical surface welding method and face to face welding method,and a coupling model of the welding parameters of the upper and lower pump body was established based on material performance test and the experiment of the friction surface temperature,whose parameters such as spindle speed,welding pressure and number of rotating rings were determined accordingly.Static analysis shows that the strength of clutch pump body(including weld)meets the design requirements,and the experimental results of 10 groups of test specimens,whose welding parameters were determined according to the coupling model of welding parameters,show that the bearing pressure of clutch pump body(including weld)reaches the required 14 MPa,which verifies that the structural type of the plastic clutch pump body designed and its welding parameters determination are correct and feasible.