中国机械工程
中國機械工程
중국궤계공정
China Mechanical Engineering
2015年
21期
2895-2900
,共6页
加工误差%补偿%薄壁件%程序集成%软件接口
加工誤差%補償%薄壁件%程序集成%軟件接口
가공오차%보상%박벽건%정서집성%연건접구
machining error%compensation%thin??walled workpiece%program integration%softG ware interface
针对薄壁件数控加工过程中产生的力致变形误差，提出了一种将变形误差预测与误差补偿进行集成的方法。在提出高效的误差计算迭代算法基础上，采用 APDL 的方式开发了集迭代计算、刀具走刀、材料去除于一体的误差动态仿真程序，实现全过程加工误差的自动计算。借助 UG 二次开发工具UG/Open 开发的应用程序实现了 UG 和 ANSYS 之间的数据通信，根据预测变形误差自动修正 CAD模型，继而利用 UG CAM 生成考虑误差补偿因素的加工代码。研究了涉及误差离线预测及补偿的集成方法的多个关键技术。算例表明：误差预测值逼近实验值，精度可靠；集成软件能够自动生成误差补偿的加工代码，实现了误差离线预测和补偿全过程的 CAD/CAE/CAM 集成，集成程度高。
針對薄壁件數控加工過程中產生的力緻變形誤差，提齣瞭一種將變形誤差預測與誤差補償進行集成的方法。在提齣高效的誤差計算迭代算法基礎上，採用 APDL 的方式開髮瞭集迭代計算、刀具走刀、材料去除于一體的誤差動態倣真程序，實現全過程加工誤差的自動計算。藉助 UG 二次開髮工具UG/Open 開髮的應用程序實現瞭 UG 和 ANSYS 之間的數據通信，根據預測變形誤差自動脩正 CAD模型，繼而利用 UG CAM 生成攷慮誤差補償因素的加工代碼。研究瞭涉及誤差離線預測及補償的集成方法的多箇關鍵技術。算例錶明：誤差預測值逼近實驗值，精度可靠；集成軟件能夠自動生成誤差補償的加工代碼，實現瞭誤差離線預測和補償全過程的 CAD/CAE/CAM 集成，集成程度高。
침대박벽건수공가공과정중산생적력치변형오차，제출료일충장변형오차예측여오차보상진행집성적방법。재제출고효적오차계산질대산법기출상，채용 APDL 적방식개발료집질대계산、도구주도、재료거제우일체적오차동태방진정서，실현전과정가공오차적자동계산。차조 UG 이차개발공구UG/Open 개발적응용정서실현료 UG 화 ANSYS 지간적수거통신，근거예측변형오차자동수정 CAD모형，계이이용 UG CAM 생성고필오차보상인소적가공대마。연구료섭급오차리선예측급보상적집성방법적다개관건기술。산례표명：오차예측치핍근실험치，정도가고；집성연건능구자동생성오차보상적가공대마，실현료오차리선예측화보상전과정적 CAD/CAE/CAM 집성，집성정도고。
A integration method for error prediction and compensation was established to deal with force??induced errors in NC machining of thin??wall parts.An effective mathematical iterative algorithm of errors was built.The dynamic emulation programs of deformation errors integrating with the error iterative algorithm,cutter moving and material removing were designed by using ANSYS parametric design language.Machining errors through the whole machining process might be calculated automatiG cally.Using UG/Open API (secondary development tool in UG),the data communication interfaces between ANSYS and UG were designed.The CAD model was modified automatically according to the deformation errors.Then the NC codes including error compensation were created by UG CAM.Some key techniques for integration of out??line error prediction and compensation were also studied.It is proved in a three??dimensional milling example that the errors predicted by the APDL program are very close to the experimental results and the integrated softwares can generate automatically the NC codes including error compensation.CAD/CAE/CAM integration including out??line error prediction and ompensation is effectively realized.
