压盖落料冲孔成形模设计

介绍了在尺寸公差及形位公差要求较高的落料冲孔成形件的模具设计过程中，不降低劳动效率的情况下，如何使模具简化、降低模具成本，并使冲压件满足其设计要求。     

夹扣的弯曲成形连续模

此文介绍一种在合理大间隙冲裁和延时回程的条件下,使落料件回位嵌入条料中,从而实现连续弯曲成形的一种工艺方法。     

弯头拉延模的设计

弯头是某产品上的关键零件之一,用冲模成形为最佳方案。此文分析弯头的拉延工艺性,介绍弯头拉延模的结构特点,并提出在设计、制造、使用弯头拉延模时应重视的几个问题。对成批生产同类零件的单位具有较高的参考价值。     

热水器面罩成形模设计

分析了热水器面罩成形模的设计方案.通过成形时极限变形、成形力以及压边力的计算.在3150kN双动油压机上试出合格产品.     

微型电机端盖整形模设计

根据端盖的特殊要求,设计了一副整形模,一次性地达到了制件的尺寸精度和各部形位精度.模具结构简单,实践证明可行.     

精密模锻件的设计要点

讨论了精密模锻件的分类密集形状的锻件、盘形锻件和长杆形锻件 ,以及精密模锻件的设计要点精密模锻件的机械加工余量、尺寸精度和表面粗糙度、分模面的选择、模锻斜度、圆角半径、肋的设计和腹板厚度的设计     

拉深模抗磨减摩性设计

本文分析了影响拉深模抗磨减摩性能的主要因素,提出应从模具材料成形板材、模具结构、润滑剂等方面来改善拉深模的抗磨减摩性能。     

厚壁管双向扩口镦粗成形工艺及模具

文中介绍了一种用于厚壁管双向扩口镦粗成形的工艺及模具。它由两道工序完成 ,即先将管坯两端同时扩口 ,再将两端台阶同时镦粗成形。模具结构采用了带外锥的分瓣式凹模及带内锥的浮动凹模套 ,解决了工件上、下两台阶同时扩口或镦粗成形及卸料问题 ,并提高了零件的尺寸精度和同轴度     

使用聚胺脂的锁片成形模设计

介绍了一种使用聚胺脂结构的锁片成形模.对该模具的结构作了详细分析.并介绍了其成形过程及特点.     

阶梯件拉伸挤压复合模设计

通过分析零件的工艺特点 ,设计了拉伸挤压复合模 ,不仅可提高零件质量 ,而且可提高生产效率。     

表面形貌和润滑条件对轿车用国产冷轧薄板的成形性影响

在大量实验的基础上就轿车用国产冷轧薄板的表面粗糙度、表面微观形貌及表面润滑条件等因素对钢板成形性的影响作了详细的探讨，并认为润滑有利于金属薄板在冲压成形过程中的流动，可使整个零件的应变分布趋于均匀，从而提高零件的冲压成形能力，降低冲压件的废品率。     

上浮式高速冲模设计

介绍了一种上浮式高速冲裁模的设计方法 ,适用于薄板冲裁 ,其在卸料方式、定位方法上有一定的特点     

Warm forming die design,part I: Experimental validation of a novel thermal finite element modeling code

Finite element analysis (FEA) has become an invaluable tool in the design of sheet metal stamping dies and processes. FEA has gained widespread acceptance as the best method of optimizing dies for conventional stamping processes. More recently, FEA has been shown to be an effective method of designing tooling for sheet forming processes. In this work, an FEA based approach is applied to the warm stamping (warm forming) process. This work introduces a new thermal finite element analysis software called PASSAGE®/Forming (PASSAGE) that enables the up-front design of the thermal management of warm forming dies. This thermal finite element analysis software is designed to specifically handle the forming and optimization scenarios related to the heating of a stamping die while minimizing user interface time. In this work, PASSAGE has been applied to a simple block of steel embedded with cartridge heaters to validate the prediction capability of this software under two different heating conditions. The results show that PASSAGE is capable of predicting the actual steady-state temperature distribution within the block with an acceptable level of accuracy while yielding notable information to the user with respect to specifying power requirements. A finite element software package like PASSAGE is a valuable tool that will aid greatly in the implementation of warm forming as a manufacturing process beyond the scope of the laboratory and into production.     

陶瓷-钢反挤压组合凹模的优化设计

叙述了进行陶瓷-钢反挤压组合凹模优化设计的方法,编制了相应的优化设计程序,分析了优化设计的结果,在此基础上提出了陶瓷-钢组合凹模设计的若干准则.     

爪形保持架的工艺及弯爪模设计

以2712Kz爪型保持架为例,分析零件的成形过程,对其工艺及弯爪模的设计作了详细介绍.     

Warm forming die design,Part II: Parting surface temperature response characterization of a novel thermal finite element modeling code

The majority of the research activities in the area of warm forming are concentrated on demonstrating or simulating the improved formability associated with forming lightweight materials such as aluminum alloys at elevated temperatures. However, the ability to design the proper thermal management system within the forming tool is a critical aspect to delivering this technology as a viable, stable production alternative to traditional stamping. This work begins to address the thermal stability issues of this process by examining the impact of process cycle time on the parting surface temperature response. Cycle times of 10, 15, 30, and 300 s were evaluated using a reciprocating surface and a self-heated experimental block of 1020 steel fitted with resistance cartridge heaters. The presented results indicate that cycle time does not significantly impact the steady-state temperature response at the parting surface for a well-insulated die that has proper thermal management. Parting surface experimental results were compared to values obtained numerically and through the use of the novel thermal finite element analysis software PASSAGE/Forming^®.     

一种超声速气体冲击射流噪声的屏蔽抑制方法

根据对冲击射流离散频率噪声产生的反馈机理的认识，提出了一种能够有效地破坏反馈环的形成，从而抑制冲击射流离散频率噪声的喷嘴屏蔽方法。这种方法是通过阻隔反馈声波使其不能到达喷嘴唇口、同时屏蔽物不与射流接触来实现降噪的目的，实验结果表明，对于合适的屏蔽罩参数，正常降噪效果达5dB以上。分析表明这种降噪方法对射流冲击平板的推力和除尘除水效率的提高有帮助。     

椭圆形拉深件的内涨式切边模

介绍了椭圆形拉深件由内向外进行切边的工艺过程和模具结构.并着重分析了模具工作过程以及在模具设计与制造过程中的特点.     

A new direction for the development of the paper industry

-In order to reduce the increasingly serious environmental impact caused by wastewater from the paper industry, the municipality of Jinan plans to adopt a specialized production technology. The new technology will centralize pulp production and decentralize paper production. It is predicted that the new technology will greatly reduce the environmental effects of the paper industry. Perhaps it is a new direction for the development of the paper industry in China.     

Modeling and validation of deformation process for incremental sheet forming

Incremental Sheet Forming (ISF) is an emerging sheet metal prototyping technology where a part is formed as one or more stylus tools are moving in a pre-determined path and deforming the sheet metal locally while the sheet blank is clamped along its periphery. A deformation analysis of incremental forming process is presented in this paper. The analysis includes the development of an analytical model for strain distributions based on part geometry and tool paths, numerical simulations of the forming process with LS-DYNA, and experimental validation of strain predictions using Digital Image Correlation (DIC) techniques. Three kinds of parts include hyperbolic cone, skew cone and elliptical cone are constructed and used as examples for the study. Analytical, numerical and experimental results are compared, and excellent correlations are found. It is demonstrated that the analytical model developed in this paper is reliable and efficient in the prediction of strain distributions for incremental forming process.