摘要
以提高造型精度、减小凝聚单元体的尺寸为目的 ,分析了喷射过程的影响因素。论述了喷头的工作原理 ,并对喷头的设计进行了量化研究。针对液体在颗粒空隙中渗透的非稳态过程进行了数学分析与建模 ,研究了射流的结构和速度分布 ,给出了射流飞行的最优距离。对喷射过程中的滞后现象进行了详细分析 ,解决了喷头启闭控制与扫描运动的匹配问题 ,提高了平面内扫描喷射的几何准确性。
In order to improve the building precision and decrease the size of agglomeration unit body, the factors affecting on jetting process are analyzed. The working principle of nozzle is discussed and the design of nozzle is studied quantitatively.Non-stationary process of liquid infiltration in the space between particles is mathematically analyzed and modeled. The structure and speed distribution of effluxion is studied, thus an optimal distance of effluxion flying is given. The lag in jetting process is analyzed in detail,thus the matching relationship between the start and the stop of nozzle and scanning movement is solved. The geometric accuracy of jetting process is improved.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2002年第23期2001-2004,共4页
China Mechanical Engineering
基金
国家 8 63高技术研究发展计划资助项目 (863-5 11- 92 0- 0 0 9)
