冲压模具自动设计系统的研究

论述了在三维实体和参数化CAD技术的基础上,应用Pro/ENGINEER软件的族表驱动和参数驱动功能实现冲压模具设计自动化的原理及方法。     

斯太尔汽车座椅护套模具的研制

斯太尔座椅护套是外形尺寸大，结构复杂橡胶件，通过对该件分析，确定最佳分型面和制造工艺，减化模具结构，减轻重量，使胶料在合模时流动合理，阻力最小，合模缝处易粘合，结合本厂实际，在没有大型注射机的情况下，因地制宜，采取了模芯加热，配方优化等措施，解决了大型橡胶制品因受热不匀产生的过硫，脱模撕裂，缺胶，气孔等缺陷，制品符合斯太尔技术要求，并通过国产化鉴定。     

提升效率迫在眉睫提高质量尤为关切中国汽车车身模具行业的现状观察

2011年总体市场环境明显好于预期.2011年是中国进入WTO十周年,是"十二五"规划开局之年.据不完全统计, "十二五"期间,国内排名前30名的车企总的产能规划已经突破年产4000万辆,几乎所有排名靠前的车企"十二五"规划的关键词均是"扩能",这意味着需要大量的新车型来支撑其产销量,即需要开发大量整车模具.     

汽车车身冲压技术的现状及发展趋势

本文从汽车车身冲压厂的设置，管理到设备，工艺等与冲压件质量直接关联的几个方面分析了国内外汽车车身板件冲压技术的现状及发展趋势。     

模具材料及其发展概况

本文全面的综述了金属成形和塑料成型模具常用的新型材料并对模具材料的发展及推广提出了建议。     

Punching Shear Behavior of RC Slab-Column Connections with Nonrectangular Columns

This paper present an experimental study on the RC slab-colunm connections with nonrectangular colunms, namely cross-shaped column, T-shaped column and L-shaped column. The punching shear deformation and strength characteristics of slab-column connections with nonrectangular columns under punching shear load are investigated. Nine specimens with the three kinds of nonrectangular columns and two reference specimens with square columns are tested. The tested ultimate loads, deformations, and failur emodes of specimens are presented and discussed. Test results reveal that the punching shear strength and ductility of the connections with nonrectangular columns are higher than those of the corresponding connections with square columns, and also prove that the application of nonrectangular columns to flat-plate structure was feasible. Based on the test results, one method of calculating punching shear strength of connections with nonrectangular columns is proposed, which conforms with the current design practice of China. The test results on the punching shear strength are compared with the predictions of the formulas proposed by codes of several different countrie; and the predictions given by ACI code and China code are found to be conservative as the reinforcement ratio is increased.     

玻璃升降器扇形齿板精冲工艺

介绍了CA141型汽车玻璃升降器扇形齿板精冲原理、模具的设计及结构,认为精冲扇形齿板可提高其使用性能和寿命,并可降低生产成本。     

压铸生产中国外技术的消化吸收

本文对压铸工艺流程，压铸模设计要点以及引进模具的使用与维护进行了较全面的阐述。