运载火箭贮箱壁板机铣装夹技术研究  

Research on Milling and Clamping Technology of Carrier Rocket Tank Wall

作　　者：孙斌[1] 陈莎莎[1] 石正波 沈宏华[1] 崔国平[1] SUN Bin;CHEN Shasha;SHI Zhengbo;SHEN Honghua;CUI Guoping(Shanghai Spaceflight Precision Machinery Institute, Shanghai 201600, China)

机构地区：[1]上海航天精密机械研究所

出　　处：《机械》2019年第5期76-80,共5页Machinery

摘　　要：为进一步提供运载能力,对新一代运载火箭提出了减重要求,其贮箱壁板加工工艺方法由机械铣切替代化学铣切。围绕某型号运载火箭的研制需求开展了贮箱壁板机铣装夹技术研究。通过对壁板的结构特点及加工工艺性分析,确定了"先弯后铣"的工艺方法。通过开展工艺试验,定位了引起产品超差的主要因素,分析了超差原因,制定了解决措施,引出了真空吸附装夹技术研究的需求,阐述了真空吸附装置的设计方案。结合真空吸附原理,进行了机铣过程切削力理论计算,确定了真空吸附系统的吸附力、吸附面积,优化了密封结构设计,实现了柔性装夹。最终通过合格产品的试制,验证了真空吸附装夹装置的有效性。In order to further provide the carrying capacity, the new generation launch vehicle has put forward the requirement of reducing the weight. The processing technology of the tank wall is replaced by machine milling.Based on the development requirement of a certain type of launch vehicle, this paper studies the milling and clamping technology of the tank panel. Through the structural characteristics and processing technology of the panel, the process of "bending before milling" is determined. Through the process test, the main factors causing the product overshoot are located, the causes of the overshoot are analyzed, the solutions are formulated, the requirements of the vacuum adsorption clamping technology research are drawn up, and the design scheme of the vacuum adsorption device is analyzed. Combining with the vacuum adsorption principle, the theoretical calculation of cutting force in milling process is carried out, the adsorption force and area of vacuum adsorption system are determined, the sealing structure design is optimized, and the flexible clamping is realized. Finally, through the trial production of qualified products, the effectiveness of the vacuum adsorption clamping device is verified.

关 键 词：运载火箭 贮箱 壁板 真空吸附 机铣 装夹 

分 类 号：V475.1[航空宇航科学与技术—飞行器设计]