摘要
针对薄壁零件刚性差,制造过程中容易产生装夹变形的工艺难题,采用有限元分析方法,对加工过程中的薄壁件装夹方案进行了优选.将工件视为弹性体,装夹/支撑作为刚体,运用有限元分析软件,分别对装夹位置、装夹顺序以及加载方式三个因素在装夹过程中对框类薄壁零件产生变形的影响进行了模拟.结果表明,夹具或支撑间距较大,先在刚性较差的表面上进行装夹,每个夹紧力均在一步内施加的方案是最佳装夹方案.
Thin-walled workpiece with insufficient rigid property is deformable during the machining process. Fixture is an important consideration in the operation. To reveal the effect of locating points, clamping sequence and clamping force on the distortion of thin-walled frame part, finite element models were established to simulate the clamping operation. It shows that the optimal clamping scheme is that the clamps (or supports) are far from each other, clamping forces are firstly applied on the surface with low rigid and every clamping force is applied in one step.
出处
《浙江大学学报（工学版）》
EI
CAS
CSCD
北大核心
2004年第1期17-21,共5页
Journal of Zhejiang University：Engineering Science
基金
国防型号工程资助项目(00-1810-0785)
国家自然科学基金资助项目(50175102).
关键词
铣削加工
薄壁零件
加载方式
装夹方案
有限元模拟
方案优选
Computer simulation
Finite element method
Fixtures (tooling)
Milling (machining)
Optimization
