摘要
为提高异形航天紧固件的加工精度和加工效率,将原紧固件生产工艺进行集中优化,研发多工位组合加工专用机床。通过对零件尺寸、表面粗糙度及形位公差的分析,完成满足加工要求的床身单元与送料分度等设计。该机床通过一次装夹,实现同时加工4个紧固件,完成扩孔、铰孔、倒下锥角和攻螺纹4个基本工序。采用专用复合刀具加工,满足紧固件的尺寸及精度要求。该机床已经完成批量样件试制,经检测达到紧固件的图纸精度要求,加工时间满足生产节拍要求。为航天领域同类型异形紧固件实现全自动化加工提供了有效的解决方案。
In order to improve the machining precision and efficiency of special-shaped aerospace fasteners,centralizing and optimizing the original fastener production process,the compound multi-station special machine tool is designed.By analyzing the requirements of dimensional tolerance,surface roughness and shape and position tolerance of parts,the mechanical structural design of the machining unit and rotary plate dividing feeding were completed to satisfy the process requests.Through a single clamping,four fasteners can be processed by the machine tool at one time,reaming,reaming,chamfering angle,tapping four basic processes included.Adopting custom special composite cutting tool,the size requirements and precision requirements of the parts are satisfied.The trial production of batch samples has been complete.It meets the drawing requirements of the parts after processing verification.The processing time meets the company’s requirements of production rhythm.It provides an effective solution for the full automatic processing of similar special-shaped fasteners in the aerospace field.
作者
李阔
王宪龙
赵常振
施贤明
缑永鹏
谢长超
高建设
LI Kuo;WANG Xianlong;ZHAO Changzhen;SHI Xianming;HOU Yongpeng;XIE Changchao;GAO Jianshe(School of Mechanical and Power Engineering,Zhengzhou University,Zhengzhou 450001,CHN;Henan Aerospace Precision Maching Co.,Ltd.,Xinyang 464000,CHN)
出处
《制造技术与机床》
北大核心
2023年第7期83-88,共6页
Manufacturing Technology & Machine Tool
关键词
航天紧固件
专用组合机床
工序集中
专用复合刀具
aerospace fasteners
special modular machine
process centralization
special compound tool
