Pro/E NGINEER在纸浆模塑模具设计中的应用

随着纸浆模塑行业的不断兴起以及纸模的广泛应用,纸模的缓冲性能成为人们的关注的重点。众所周知、纸浆模塑产品的缓冲性能是通过其结构来实现,而模具又是纸模结构设计中的关键环节。因此模具的开发设计越来越被人们所重视。本文以纸模的模具设计为主要目标,借助于Pro/E平台对纸模及其模具进行设计,为纸浆模塑模具的设计提出了一种新的设计方式。     

基于Pro/E的绷缝机机头的参数化造型设计

对绷缝机的传统设计方法与Pro/Engineer参数化造型设计方法进行了分析比较,并进行具体应用。实际设计过程表明参数化造型设计能够高效率、高精度地提高设计质量,从而缩短设计周期,提高企业应变能力。     

基于UDF和Pro/Toolkit的轴类零件快速设计

在特征定义和分类的基础上以轴类零件为例,研究在Pro/E系统下运用UDF和二次开发工具Pro/Toolkit实现快速设计的一般方法,并利用动态链接库(DLL)实现了使用VC 6.0的MFC类库对应用程序的用户界面开发。     

基于Pro／E生物质粉碎机虚拟设计与研究

文章基于国内生产的饲料粉碎机的原型,构思了生物质粉碎机的模型,在三维CAD设计软件Pro／E环境下进行三维实体建模。对生物质粉碎机的虚拟样机的设计与研究进行了有创新和建设性的尝试,为利用虚拟样机技术研究农业机械提供了更多有益的参考。     

基于Pro/E的切纸机推纸部件运动仿真与分析

推纸部件是切纸机的重要性能部件。推纸部件的结构和运动性能直接关系着裁切的准确性、稳定性及整机工作效率。文章通过Pro/E三维仿真软件对推纸部件进行设计,并运用Pro/E的运动/动力学分析模块Mechanism对其进行运动仿真分析,运用有限元分析模块Mechanica进行结构分析。根据分析结果,评测证明所研究机型的推纸部件满足对纸张推动灵活平稳、到位准确的基本要求。文章对切纸机推纸部件的结构改进和优化研究提供了理论指导。图7表1参9     

The intestinal microbiota and its modulation for Salmonella control in chickens

Salmonella control has been one of the major tasks in poultry production to ensure poultry food safety. Effective control is difficult due to the numerous potential sources of Salmonella infection and product contamination in integrated poultry enterprises. In addition, the lack of clinical symptoms of infection in poultry further increases the challenge of achieving proper control. The chicken intestinal microbiota plays an important role in the host health and its modulation has achieved considerable success in the past to reduce Salmonella contamination at the farm level. The use of pro/prebiotics has been the major approach in modulating the microbiota. There is increased consumer pressure demanding the reduction of antibiotics in feed and elimination of Salmonella from poultry and their products. Modulation of the chicken intestinal microbiota continues to offer an attractive option for natural control and sustainable chicken production. In this article, the role of intestinal microbiota in chicken health and the progress in microbiota modulation for Salmonella control have been reviewed. Major technologies for modulating intestinal microbiota, such as the use of probiotics, prebiotics, or phytobiotics (essential oils) and phage therapy that have either received much attention in research and application or demonstrated promise in the development of novel techniques for Salmonella control, are discussed. The potential and drawbacks of each of these are also critically reviewed.     

Pro/E参数化技术在食品机械通用零部件设计中的应用

参数化技术是三维设计的关键技术,也是数字化设计的核心技术.在食品机械的三维设计中,通用零部件多,采用参数化技术,将大大提高食品机械的设计效率.本文基于Pro/E软件,对食品机械通用零件齿轮的参数化设计过程进行了研究.     

206铝质全开易拉盖模具三维设计

介绍了易开盖的发展趋势与生产技术现状,分析了易拉盖成形工艺,采用Pro/E建立了模具实体模型。206铝质全开易拉盖辅助刻线的设计,解决了开启困难的问题,整个设计符合当前模具国产化的市场需求。     

DWX型液压支柱的偏载强度有限元分析

本文用Pro/MECHANICA有限元分析软件,建立了柱塞悬浮式液压支柱的有限元模型。通过静态结构分析,得到支柱在偏心载荷作用下的变形和应力情况。对活柱和油缸的强度分析,验证了柱塞悬浮式液压支柱能够承受异常载荷的性能。