文档介绍：挤压模具的数字化设计与数字化制造
张志豪*通讯作者:张志豪,副教授,010-62332253,ntzzh2279@
,谢建新
(北京科技大学新材料技术研究院,北京 100083)
摘要: 本文介绍了基于数字仿真技术的挤压模具数字化设计、结构优化、产品质量预测的实现方法,以及挤压模具数字化制造的加工工艺。挤压模具数字化设计的目的是提供模具的几何、拓扑信息和挤压成形的工艺信息,其核心技术是数字化建模与数字化仿真。数字化仿真技术在挤压过程金属流动行为分析、模具结构优化、型材成形质量预测等方面已取得了良好的应用效果。采用基于仿真技术的虚拟试模方法,是实现挤压模具的“零试模”有效途径,也是形成新设计思路和设计方法的重要技术手段。C加工、热处理和表面处理系统是挤压模具数字化制造的主要特征。实现CAD、CAM和CAE的有效结合,提高复杂多孔空心型材挤压模具的制造技术水平,是我国挤压模具数字化制造的重要发展方向。
关键词: 挤压模具;C加工;数值模拟
中图分类号: 文献标识码: A 文章编号:
Digital Design and Manufacture of Extrusion Die
Zhang Zhi-hao
, Xie Jian-xin
(Institute for Advanced Materials and Technology,University of Science and Technology Beijing,Beijing 100083,PR China)
Abstract: The article introduced the die digital design, optimization and production quality forecast of extrusion, and the processes of die digital manufacture. The authors pointed out that, the aims of the digital design of extrusion die were providing geometry and topology information of the die, as well as the process information of extrusion practice. The core technologies of the digital design were digital modeling and digital simulation. Digital simulation was applied in analyzing metal flowing behaviors, die optimization, and production quality forecast of extrusion. Using virtual extrusion based on digital simulation was an effective way to achieve “without die test” of extrusion die, and also was an important platform for developing new design ideas and methods. The feature of digital manufacture of extrusion die was the wide application C processing, heat treatment and surface treatment. Improving the manufacture level of extrusion dies plicate and multi-orifice structure bining CAD, CAM and CAE effectively, was the key development direction of the extrusion die digital manufacture industry at the current stage of our country.
Key words: Extrusion die; Digital design; CNC process; Numerical simulation
1 前言
模具设计制造是挤压生产的核心技术,对于铝合金型材挤压,模具成本可占挤压成本的30%~40%,对于某些钛合金、钢铁材料挤压,模具成本可达生产成本的50%[1]。
传统的铝合金型材挤压模具设计主要依据工