摘要
航天产品复杂零部件的精密加工与检测是数字化制造领域的研究热点。为提高复杂零部件的检测精度及检测效率,提出基于模型特征的计算机辅助接触式在机测量策略。开发了基于STEP(产品模型数据交互规范)零件模型检测特征识别与提取系统。为了提高测量精度研究了测球半径补偿方法,分析了基于特征的测点选择及测量宏程序编制。利用opencascade几何造型内核在Qt平台上开发了原型系统,通过对发动机缸盖定位圆柱孔的在机检测试验验证了所建立系统的有效性。
Precision machining and inspection of complex components of aerospace products have been the focuses of digital manufacturing. A feature based computer aided contact on machine measurement system was proposed in order to improve machining and inspection accuracy of complex components. A STEPbased model feature recognition and extraction system was proposed. In order to improve inspection accuracy,the method to make compensation of the probe radius has been studied,meanwhile feature based choose of measurement points and measurement macro programs have been analyzed. Based on opencascade geometric modeling kernel and Qt,a prototype system was developed,and the validity of the proposed on-machine measurement system was demonstrated with the inspection of alignment cylindrical bore of a cylinder head.
作者
李翔
吴莉
陈晓波
习俊通
LI Xiang WU li CHEN Xiao-bo XI Jun-tong(School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, Chin)
出处
《组合机床与自动化加工技术》
北大核心
2016年第10期58-61,66,共5页
Modular Machine Tool & Automatic Manufacturing Technique
基金
"高档数控机床与基础制造装备"国家重大科技专项资助项目(2014ZX04015021)
关键词
在机测量
特征识别与提取
半径补偿
测量宏程序
on-machine measurement
feature recognition and extraction
compensation of radius
measurement macro programs
