摘要
为了解决某火箭弹研制过程中薄壁、大尺寸圆弧的精密加工难题,以弹头本体为实例,针对制造过程存在的瓶颈、困难问题,从加工过程的变形控制、组合装夹方案工装设计及切削参数优化、改进刀具和降低设备使用成本等方面着手,对锥形薄壁大圆弧面的精密制造工艺技术进行了深入研究。研究结果表明,通过计算机辅助技术绘制粗车坐标图在普通车床进行粗车去大量,可以替代数控车床,降低设备使用成本,通过合理制订工艺路线结合工装设计可以有效控制装夹变形和加工变形,通过刀具改进和工艺参数优化,解决了高硬度难加工材料加工过程中刀具磨损快的问题,最终实现了锥形薄壁大圆弧面的精密加工,取得了良好的效果。该研究成果在类似结构零件的大圆弧面精密加工中得到了广泛应用和推广。
In order to solve the problems and difficulties of thin-walled big arc during the precision manufacturing of an artillery rocket,we aimed at the bottleneck and difficulties in manufacturing process including deformation control in the machining process,design of a combined clamping device,optimization of cutting parameters,tools improvement,and equipment operating cost reduction,deeply researched precision manufacturing technology of cone-shaped and thin-walled arc surfaces.The research results showed that digital controlled lathes would no longer be necessary as computer aided technology generating coordinate graphs for rough turning was used on conventional lathes to reduce costs.The clamping deformation and machining deformation problems were effectively controlled by the formulation of process route and tooling design,and the tool wear problem encountered in the machining process of hard and difficult materials was solved by the tool improvement and parameters optimization.Ultimately it was achieved that the successful and effective precision machining of big cone-shaped and thin-walled arc surfaces.The research results have already been widely applied and promoted for the precision machining of big arc surfaces of components with similar structures.
作者
张东生
赵飞超
ZHANG Dongsheng;ZHAO Feichao(Northwest Institute of Mechanical&Electrical Engineering,Xianyang 712099,China)
出处
《新技术新工艺》
2023年第12期13-17,共5页
New Technology & New Process
关键词
薄壁
锥形腔体
大圆弧面
装夹
变形
刀具
thin wall
cone-shaped cavity
big arc surface
clamping
deformation
tooling
