摘要
黄河动床实体模型是用于研究黄河流域演变规律及治理开发中关键技术问题和各种治理方案的模型体系,模型的准确性与上述问题的研究精度密切相关。使用分块离散成型的原理,提出了使用数控设备进行模型的分块加工,然后拼装的加工方案,并进行了相关的实验。研究表明,模型误差主要包括单块切削误差和拼接误差两部分。本试验条件下单块切削误差为:0.028 mm;6块拼接误差≤4 mm,使用重复定位校核的方法可将累积误差控制在规定范围内。
The movable-bed molds for the Yellow River are used to study the evolution law of Yellow River basin. All kinds of treatment schemes are based on the research results. So the precision of the molds is very important to the correctness of those schemes. A NC machining process was put forward to making the movable-bed mold for the Yellow River. The process was based on the segmentation method, which the whole movable-bed mold was divided into several parts. Every partition of the mold was made by using NC programming machine. Then all partitions were assembled into the complete mold. A process test was taken. Through the research, it can be concluded that model error includes cutting error and assembling error. In the expriments, the cuttring error is 0. 028 InIn and the assembling error less than 4 mm which can be controlled by repeated location checking, The results show that it＇s a efficiency process for making the movable-bed molds for the Yellow River and the error is less than the request value.
出处
《机电工程》
CAS
2008年第7期8-10,共3页
Journal of Mechanical & Electrical Engineering
基金
国家水利部现代水利科技创新项目(Xds2004-03-03)
关键词
黄河动床
数控加工
数控模型
误差分析
movable-bed molds for the Yellow River
NC machining
NC machining mold
error analysis
