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矿用自卸车车架结构复杂、焊缝多,通过解析计算和经验公式无法实现车架焊接变形的预测,难以确定车架的机加工余量。根据现有焊接工艺,借助Weld planner软件对车架焊接变形进行快速预测。结果表明:车架焊接的整体变形,主要表现为龙门组件与左、右纵梁内凹;中部抗扭管和左右纵梁外侧轴向外凸;仿真结果与实际测量结果误差控制在20%左右,满足工程应用要求,证明了模拟结果的准确性。该方法在矿用自卸车车架的成功应用,为
The structure of mine dump truck frame is complex and there are many welds. It is difficult to predict the welding deformation of the frame through analytical calculation and empirical formula, and it is difficult to determine the machining allowance of the frame. According to the existing welding process, Weld planner software for rapid prediction of welding frame deformation. The results show that the overall deformation of the frame welding is mainly manifested as: the gantry assembly is concave with the left and right longitudinal beams; the central torsion tube and the axially outward of the left and right longitudinal beams are axially convex; the error between the simulation result and the actual measurement result is controlled at about 20% , Meet the engineering application requirements, and prove the accuracy of simulation results. This method has been successfully applied to mine dump truck frame