| 机床横梁重力变位的自演进补偿 | |
| 张伯鹏 ; 张年松 ; ZHANG Bopeng ; ZHANG Niansong | |
| 2010-06-08 ; 2010-06-08 | |
| 关键词 | 机床精度 重力变位 自演进补偿 遗传算法 machine tool accuracy deformation self-evolutionary compensation genetic algorithm TG502 |
| 其他题名 | Self-evolutionary compensation of machine tool crossbeam deformation induced by gravity |
| 中文摘要 | 为解决大型机床由于重力变位产生几何误差的问题,提出了利用制造信息差和自演进补偿技术改善制造装备精度的途径。得出了大型数控龙门铣床横梁重力变位的自演进补偿方法。在辅助梁上设置3个出力可控的液压千斤顶,利用遗传算法来实现自演进机制。仿真结果显示,龙门铣床横梁变位为-9μm,和大型机床现行工业标准中平面度为45μm相比对,只占20%;转角在±6μrad以内。横梁变形和工业比对说明了这种补偿方法的有效性。; Crossbeam deformation induced by the gravitational force is one of the main sources of geometrical errors in large machine tools.A self-evolutionary compensation approach was developed to reduce the crossbeam deformation induced by the gravitational force on a large numerically controlled gantry milling machine.Three hydraulic actuators were distributed on an auxiliary beam for the compensation with the genetic algorithm used for the self-evolutionary mechanism.The general flexibility of the crossbeam was reduced to-9 μm and a general obliquity inside of(±6 μrad. This flexibility is only 20 percent of the current industrial standard so this compensation method can be used to greatly improve machining accuracy.; 国家“九七三”基础研究基金项目(2003CB716204); 国家自然科学基金资助项目(50375081) |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/49108]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 张伯鹏,张年松,ZHANG Bopeng,等. 机床横梁重力变位的自演进补偿[J],2010, 2010. |
| APA | 张伯鹏,张年松,ZHANG Bopeng,&ZHANG Niansong.(2010).机床横梁重力变位的自演进补偿.. |
| MLA | 张伯鹏,et al."机床横梁重力变位的自演进补偿".(2010). |
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