为满足激光快速制造的要求,设计了三维同轴送粉工作头.采用由单片机组成的控制系统控制二个步进电机以实现送粉头能绕Φ轴旋转和Ψ轴旋转,加上原有数控系统的运动配合使送粉工作头具有三维空间工作能力,它克服了普通送粉头工作空间的限制,同时还具有粉末流束焦点可调功能.此工作头用于激光快速制造能制造出轴瓦类等零件.用于激光涂敷可以完成形状较复杂零件的表面修复, 如导套零件等.利用研制的三维送粉头对导套零件和不锈钢板进行了大面积激光再制造的初步试验研究,取得了良好的效果.

In order to satisfy the requirement of Laser Rapid Manufacturing, a new 3D coaxial feeding head was designed. We control two stepping motors fixed on the 3D feeding head with the system which is made up of microprocessor units. The feeding powder head can rotate around axial Φ and axial Ψ.With the help of Siemens NC system, which can overcome the limitations of feeding head's working space, we can make axle sleeve and so on. It can be used to repair irregular shape products in laser cladding, such as metallic sheath.Using 3D coaxial feeding head, large area laser refabrication was carried out in metallic sheath and stainless steel plates