文档介绍：第卷第期航空学报
22 5 Vol. 22 No. 5
年月
2001 9 ACTA AE NAUTICA ET AST NAUTICA SINICA Sep. 2001
文章编号
: 1000-6893( 2001) 05-0424-05
薄壁零件数控加工工艺质量改进方法
郑联语汪叔淳
,
北京航空航天大学机械工程与自动化学院北京
( , 100083)
APPROACHES TO IMPROVE THE PROCESS OUALITY
OF THIN- ALLED ORKPIECE IN NC MACHINING
ENG Lian-yu, WANG Shu-chun
( School of mechanical Engineering and Automation, Beijing University
of Aeronautics and Astronautics, Beijing 100083, China)
摘要提出了通过数控加工前期的预防性仿真包括几何仿真与物理仿真分析与减小工件变形的数控工
: ( )
艺设计过程范式将工件视为弹性体模拟实际加工中的工艺约束建立工艺模型通过有限元分析检查变形
, , , ,
引起的微观误差并根据工艺成本代价依次采取进给量局部调整***路径修正改进装夹方案改进毛坯
G , ~ ~ ~
结构工艺性种策略减小或消除加工变形误差达到逐步改进工艺质量的目标以某薄壁口框验证了通过预
4 , , G
防性仿真改进工艺质量的有效性
G
关键词工艺质量数控加工薄壁零件变形仿真
: ; ; ; ;
中图分类号文献标识码
: V260 : A
Abstract: This paper proposes a procedure diagram for NC planning/programming to analyze and decrease de-
formation through preventive simulation, Which vieWs the Workpiece as an elastic body With deformation, es-
tablishes the mechanical and technological model involving the real process constraints( such as locating and
supporting) and loads( cutting, clamping and supporting forces) , and checks the micro-errors( deformation)
through the FEA ( Finite Element Analysis) of the Workpiece. In order to decrease deformation, this paper
presents four different improvement approaches or technigues. By conseguently utilizing all the