产品三维造型设计方案的探讨

探讨如何优化产品三维造型设计的方案及其在汽车车门拉手的三维造型设计实例中的应用。     

基于RapidForm逆向工程软件的汽车外拉手产品设计和数控加工

以汽车外拉手为例,使用三维扫仪对汽车外拉手进行数据的采集,将获取的点云数据保存并处理成面片文件,通过RapidForm软件根据面片文件进行数字模型的重建,并根据机械原理和机械设计知识进行产品创新设计,将重建后的数字模型导出并导入到UG NX10.0内进行数控编程,根据需要使用合适的机床进行数控加工。     

基于Moldflow的塑料拉手注射模具设计

介绍了一种塑料拉手注射模具的设计和工作过程,应用Moldflow软件分析了不同的浇口位置、气穴位置及熔接痕分布、翘曲变形量等的影响,Moldflow分析结果说明了在塑料模具优化设计中具有很好的可靠性。     

东风DF3-EPS全功能控制器的功能探讨

介绍了东风DF3-EPS汽车全功能控制器设计理念、设计目的、设计要求和对控制器、电机、传感器的匹配要求。     

《汽车设计》多媒体课件的制作

本文论述了《汽车设计》多媒体课件的制作要求,介绍了《汽车设计》的多媒体课件的制作工具和方法。     

基于RE和Pro／E的注射模具设计

介绍了反求工程技术及实物模型的数字化技术。针对注射模设计中实物模型的数字化困难的问题,利用RE和Pro／E相结合,以抽屉拉手为原型进行了反求工程的实际应用研究。     

某汽车渡船动力装置设计选型

汽车渡船是岛屿与陆地间汽车渡运系统的主要工具。其动力装置设计不仅要满足规范要求,还要考虑汽渡对机动性及快速性的要求。文章介绍了莆田石南汽车渡船的设计选型,阐述了动力装置设计中机电设备选型,全回转对转桨推进装置及轴系布置的特点、性能,以及跳板系统及机舱布置设计要点。     

浅谈汽车滚装船汽车滚装处所通风系统

介绍汽车滚装船汽车滚装处所通风系统,主要结合了船舶建造的法规、规范要求及以往设计上的经验,从风道设计、风量计算/噪音/压降的计算及控制方面上进行阐述,为滚装船的汽车滚装处所的通风提供设计思路。     

汽车电喇叭的布置设计经验及常见问题分析

通过汽车喇叭的基本概念及分类、汽车电喇叭的布置设计、汽车电喇叭支架设计、在具体车型上的应用、汽车电喇叭常见质量问题这几个方面的内容,介绍汽车电喇叭的布置设计要求、常见问题及解决方案。     

关于汽车保险杠开发设计的研究

结合长城、哈弗品牌汽车保险杠多年设计开发经验,主要对汽车保险杠的系统构成、在开发过程中应注意的法规及非法规性要求、保险杠的卡接结构匹配设计原理、结合行人保护要求优化保险杠前脸造型等几个方面做了概要介绍。     

汽车顶棚设计

简要说明了汽车顶棚的结构及制造工艺,阐述顶棚与周边件的配合设计、顶棚自身的性能设计,并介绍汽车顶棚的发展方向。     

A study on the reduction of uncertainty in the measurement of power tool vibration

To increase accurateness and reliability of the evaluation of power tool vibration transmitted to an operator, it is necessary to measure the grip and feed forces during the measurement of hand-transmitted vibration. In the study a system was invented to measure the vibration and the grip and/or feed force, which consists of a measurement handle and a PC with a data acquisition system and the corresponding software. Strain gages and an accelerometer were mounted on the handle surface for the simultaneous measurement of the forces and the vibration. The program in the system makes it possible to monitor the grip and feed force during the tool operation so that the operator keeps the applying forces within the pre-determined range. Investigating the vibration total values, frequency-weighted root-mean-square accelerations at the handle, obtained in repetition for each power tool with control of the grip and feed force showed more consistency than those measured without force control. By using the system the experimenter can reduce uncertainty in measurement of hand-held power tool vibration.     

汽车发动机的装配夹具设计

通过参考有关发动机装配夹具的结构,在了解了发动机及变速器（主要为自动变速器）的基本结构、原理的情况下,对汽车发动机装配夹具进行了结构设计并校核了其强度。此夹具适用于不同车型的各种型号发动机,通过摇柄可使发动机旋转任意角度并锁紧。具有结构简单、操作方便、成本低等特点。     

基于GPS-25KP的便携式车载导航仪的设计

介绍了Garmin公司的GPS-25LP接收模块及其在车载导航仪设计中的应用;提出了应用该接收模块、采用MCU AT89C51做主控芯片进行便携式GPS车载导航仪的设计方法,包括其硬件部分和软件部分的设计;给出了采用串口查询方式、用C51语言编写的GPS信号接收处理程序。该导航仪在试验中取得了很好的效果,能快速、较准确的显示导航信息。     

Pressure sensor matrix for indirect measurement of grip and push forces exerted on a handle

To date, a large part of workers is exposed to vibrations (23% in Europe) which can negatively impact on their health. This work discusses the importance of measuring grip and push forces in the context of hand-arm vibration tests, bearing in mind the state-of-art of current standards. It proposes a method for indirect measurement of coupling forces using a matrix of polymeric pressure capacitive sensors and discusses the model used for defining these quantities. The matrix of pressure sensors is wrapped around the tool handle and the acting forces, exchanged with the handle, are derived from the pressure values measured by the matrix. Calibration is presented and the effect of curvature is discussed. The work continues with the experimental validation of the model proposed for push force measurements carried out through lifting tests using known masses with a cylindrical handle. An experimental correction coefficient is defined in correlation to the type of grip. The method for measuring the push force, thus corrected, is assessed by means of push force tests on an instrumented handle. Finally the experimental data are analysed in order to assess the uncertainty of the proposed method for measuring the push force, highlighting the contribution of the different sources of uncertainty. The proposed measurement method allows to measure the push and the grip force (known influencing quantities for the measurement of the hand-arm vibration) during tool test and without modifying the handles.     

Cooling channel design of hot stamping tools for uniform high-strength components in hot stamping process

Although high strengths up to 1,500 MPa can be obtained by means of hot stamping, the strength and uniformity of components cannot be guaranteed during mass production if the cooling channel is not properly designed. In this paper, we propose a method for designing the cooling channel by means of the energy balance principle and arrangement methods such as the triangular method, tool split, and the connection rule for 2D sections to improve the strength and uniformity of hot stamped components. Two separate approaches for designing the cooling channel are suggested. One is to reduce facility and maintenance costs, and the other is to reduce the cooling cycle time, which critically affects productivity. These approaches were applied to hot stamping tools for manufacturing a roof side that is used as part of the structure of an automobile. Cooling performance and cooling uniformity of the designed cooling channel were verified with finite element simulation. Finally, hot stamping tools for manufacturing a roof side were designed to reduce cooling cycle time and were then manufactured to verify the proposed design methods. A roof side was manufactured by means of the hot stamping tools with the designed cooling channel, and the strength and the uniformity of the component were evaluated by means of a tensile test, observation of the microstructure, and measurement of the micro-Vickers hardness.     

具有尾气净化功能的车顶绿化系统

为了降低汽车尾气对环境的危害,在冬天有效利用尾气中的热量,提出了一种在车顶上利用尾气中余热、二氧化碳以及水分供植物生长的车顶绿化系统。该系统以AT89S52单片机为控制核心,并就其软件和硬件电路进行了详细阐述。     

基于模糊综合评判的汽车制动性能评价

汽车制动性能是汽车的主要性能之一,良好的制动性能是交通安全的重要保障。文中以实车试验数据为基础,从行车制动踏板力及行程、驻车操纵力及行程多个因素,以平地手柄操纵力为出发点对汽车制动手柄性能进行模糊综合评价,并以实例验证了该方法的可行性。     

Assembly Process Design for Managing Manufacturing Complexities Because of Product Varieties

This paper comprehensively studies assembly process design (APD) to handle variety and presents a new approach to strategically manage manufacturing complexities because of product varieties. It links the chronological steps of APD to a general approach with a view to reduce both short and long term wastes. It synthesizes two strategic approaches, product and process-based, while exploiting the APD of an entire product family. A new evaluation method for measuring the complexities of an assembly system at different stages of design has been introduced by applying information entropy. The developed evaluation methodology explains the available techniques related to design, interprets them from a design for variety point of view, and leads to techniques to manage complexities in manufacturing. The suggested methodology has been applied to examples from automobile part manufacturers and has been found to be effective in understanding the complexities in manufacturing and leading to some strategies to manage variety.     

浅谈太阳能天窗技术在汽车上的应用

太阳能作为清洁无污染的可再生能源,已经在各行各业上得到了广泛的应用.可以预见的是,汽车太阳能天窗将随着科技的不断进步而将自身功能越发完善和提升.介绍了太阳能天窗应用于汽车上的功能和优势,分析了其结构和工作原理,进一步阐述太阳能天窗未来应用趋势.