摘要
航天小批量生产中劣弧圆柱面上向心圆周孔的生产加工存在准备时间长,孔位精度不易保证,检测结果随机误差大的问题。以角盒产品为例,分析了零件的结构特点和加工难点,介绍了劣弧圆柱面镗孔的装夹定位方法和镗孔刀位点的坐标计算方法,最后提出角盒产品劣弧圆柱面上孔位精度的检验方法。采用误差分析原理对检测数据分析,孔位测量数据符合3σ准则,使用该工艺方法加工的孔位精度能满足零件设计指标要求。
In the small batch aerospace production processing of centripetal circular holes on the inferior arc cylinder,there are many processing problems,such as long preparation time,difficult to guarantee the accuracy of hole position,and large random error of test results.Taking the angle box product as an example,the structural characteristics and machining difficulties of the parts are analyzed.The fixing and positioning method of the boring with the inferior arc cylindrical surface and the coordinate calculation method of the boring tool positiont are introduced.Finally,the inspection method of the hole position accuracy on the inferior arc cylinder surface of the angle box product is proposed.The principle of error analysis is used to analyze the test data.The measured data of hole position meets the criterion of 3σ.The accuracy of hole position processed by this technology can meet the requirements of design index.
作者
马建斌
张刚
戴广永
Ma Jianbin;Zhang Gang;Dai Guangyong(Tianjin Institute of Aerospace Mechanical and Electrical Equipment,Tianjin 300458)
出处
《航天制造技术》
2020年第3期29-32,共4页
Aerospace Manufacturing Technology
关键词
劣弧
圆柱面
向心圆周孔
inferior arc
cylindrical surface
centripetal circular hole
