铝合金电弧熔积成形机器人增材制造系统

Robotic wire-arc additive manufacturing for aluminum components

基于KUKA机器人搭建铝合金CMT增材制造系统,在Robotmaster离线编程软件中建立虚拟机器人工作场景,对成形零件进行分层、轨迹规划、模拟仿真及程序生成,使用CMT冷金属过渡焊接工艺进行铝合金零件增材制造试验,利用二次回归通用旋转组合方法设计试验,对熔敷工艺参数(送丝速度、喷嘴高度、焊接速度)与熔敷层宽度、高度的成形规律进行研究,建立熔敷层尺寸的预测模型。通过铝合金零件成形试验对模型精度进行验证,发现该模型预测效果好,成形铝合金零件精度高。

CMT shaped metal deposition system for aluminum components was built based on KUKA robot,and the virtual robot working scenario was created in the Robotmaster offline programming software for the layering,trajectory planning,simulation and program generation of formed components.The CMT cold metal transfer welding technology was used to conduct additive manufacturing experiment of aluminum components.The experiments were designed by using quadratic general rotary unitized design method and the shaping discipline between cladding process parameters(wire feeding rate,nozzle height and welding speed) and cladding layer width and height was studied,and build the size prediction model for the cladding layer.Through the forming experiment of aluminum alloy components,it is found that the model has good prediction effects,and the formed aluminum alloy components have high precision accuracy.