紧凑型高精度高可靠性多路激光合束与扩束结构的设计在工程应用中具有非常大的价值。在此背景下创造性地提出一种对基准平台进行分体式铸造，将短、中、长三波段多个激光器安装于长宽高分别为 1 280 mm、990 mm、 815 mm的舱内小空间及具备空间位置调整的紧凑型结构设计方案。对某型激光合扩束主体结构进行了设计，同时对部分重要部件进行了有限元静力学分析。在该平台中各路激光器沿激光出射方向的角度调整量均大于 ±30′，平台总质量为 600 kg。该过渡基准平台系统在承载转台负载的前提下，其受力最大应变量为 0.005 mm。这表明该结构完全能够满足这种激光器的小空间合扩束及调整要求，该方法可以推广到其他光路合束结构设计中。

The structure design of the high precision and high dependability multi-beam lasers combining beam and extending beam is very important in the engineer appliance. Under this background, the fission foundry benchmark flat was advanced. The brief, middle and long wave band lasers were set in a little box whose length, width and height were 1 280 mm、990 mm、815 mm. And this box can be adjusted on space position. The main body structure of laser combining beam and extending beam were designed. At the same time, some important parts were analyzed by using the finite buck statics software. The adjusting mete of the angle on the laser outgoing direction in the flat is bigger than ±30′, and the flatchief mass is about 600 kg. Under the precondition that the transition benchmark flat system bearing the weight of the flat load, its maximum deformation strain meeting an emergency is 0.005 mm. It can be indicated that this structure can satisfy this kind laser combining beam and extending beam and adjusting request in small space. This method can be extended to other light way about combining beam and extending beam structure design.