工艺与检测Technology andTest
航天大尺寸薄壁圆盘的加工变形控制研究
白鹰金伟英顾丹
（上海航天设备制造总厂，上海200245）
摘要：针对航天大尺寸铝合金薄壁圆盘在加工过程中的翘曲变形问题，提出采用综合“应力释放槽”、“三
次振动去应力等工艺方法，解决了大面积薄壁零件的加工难题，确保了产品设计要求。实际生产状态验证了该工艺措施的有效性，可应用于其他同类结构大面积薄壁零件的加工。
关键词：航天零件：薄壁；机械加工；残余应力；加工变形；振动时效
中图分类号：TH16
文献标识码：B
Study on machine-induced distortion control in machining aerospace large scale thin disk
BAI Ying, JIN Weiying, GU Dan
(Shanghai Aerospace Equipments Manufacturer, Shanghai 200245, CHN)
Abstract: Focusing on large scale and thin disk machining in aerospace industry, a combination of methods
" residual stress release slotting" and “vibration aided aging" is proposed to solve the distortion problem in the machining process, The method is validated by the satisfaction of design requirement in product machining, from which the proposed method can be proven to extend to other aerospace components with similar structure.
Keywords: aerospace component; thinwall; machining; residual stress; machineinduced distortion; vibration
aided aging
航天飞行器的仪器圆盘是用于安装科研仪器设备的重要零件，具有尺寸大、壁厚薄、刚度低等特点。零件为铝合金薄壁板结构，筋板最薄处厚度仅为
(3）在相同切削参数的条件下，预拉伸应力可以增加工件表面残余压应力，在材料弹性范围内施加预拉伸应力越大，获得残余压应力的趋势越明显。
(4)导的预应力切削率硬40Cr表面残余应力预测公式经实验测试证明是可行的。
参考文献
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·122· 万方数据
2.5mm。在加工过程中，随着从锻件毛坏到零件整体加工余量的不断去除，该零件易于在毛坏残余应力和机加工应力的作用下产生薄板弯曲变形，零件壁厚以
10171030
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第一作者：贸爱东，男，1968年生，在职博士研究生，副教投，主要从事绿色制造技术及CAD/CAM 研究。
（编辑
刘文元）
（收稿日期：2014-0416）
文章编号：140837
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