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I-DEAS环境下的三维零件库创建方法 总被引:3,自引:1,他引:3
介绍了在I-DEAS环境建立三维零件库的方法和步骤。提出了利用三维零件样板、设计参数、三维模型参数化和族表技术实现零件尺寸的系列化以及三维零件库的创建。强调在设计草图时建立约束的重要性及建立约束的方式,分析了非独立参数和设计参数的关系及建立非独立参数关系式的方式,并通过实例说明了具体用法及调用方式。通过零件库的建立提高设计效率,减少设计工作量。由于该方法实现简单,不涉及编程,对企业建立自己的产品零件库具有一定的指导意义。 相似文献
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本文主要介绍了在Inventor软件环境下,建立三维参数化零件库的实现方法.以通用零件圆柱齿轮库的建立为实例,阐述了利用Inventor的零件族功能,实现零件库的建立的过程和方法,通过合理的参数设置及它们之间关系,就可以较好的解决系列化零件的设计问题. 相似文献
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提出了建立参数化三维实体零件库 ,分析了其在机械设计中的重要意义 ,设计了零件库的基本结构 ,并在库中添加了较常见的弹簧零件 ,从而极大地提高了设计效率和绘图速度。 相似文献
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提出了建立参数化三维实体零件库,分析了其在机械设计中的重要意义,设计了零件库的基本结构,并在库中添加了较常见的弹簧零件,从而极大地提高了设计效率和绘图速度。 相似文献
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分析了传统化工设备设计课程教学中存在的不足,并针对本课程结合三维CAD技术优势提出了改进教学模式的建议,对指导课堂教学有重要意义. 相似文献
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阐述将石油石化装备做成玩具的设计思路。从工业设计角度探讨把石油化工装备做成玩具应注意的关键设计因素,并以游梁式抽油机的玩具化设计为例,给出了游梁式抽油机玩具的设计方案。 相似文献
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Arguments are presented for a consideration of the DEM of pressed parts on a basis of equipment and tooling used to produce
the parts rather than consider a categorisation based on ‘type’ by industry. It is also suggested that a combination of both
generative and variant techniques of process planning, in conjunction with a good classification system and data base, should
be used by the designer to develop, store and retrieve the type of information used in cost-optimising the design of pressed
parts. This paper outlines the elements of cost involved in the production of pressed parts and presents details of a computer-aided
process planning system which will assist the designer to quickly obtain the information necessary to optimise the designs.
Typical computer program inputs and outputs are presented together with rules that have emerged in pressing design to reduce
the number of tooling stages required and therefore the component manufacturing cost. 相似文献
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对重型板式输送机的关键部件结构及设计进行分析,利用APDL语言建立了台板的参数化模型并进行优化,比原设计节省材料45%;运用ANSYS的拓扑优化功能对链条进行形状及刚度优化,节省材料超过30%。整体运动部件重量的下降,降低了驱动装置的负荷,直接改善了设备的运行条件,延长了设备的运行寿命。 相似文献
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核电用相关设备、结构物都要求具有一定的抗变形能力,且要求机电设备及仪器在设计基准地震下能够安全稳定运行。建立了核电站水泵(离心式上充泵)的机组模型,采用有限元软件ANSYS对其进行力学分析,遵照标准RCC-M 2007和ASME相关规定进行评定,分析水泵自重、设计温度、设计压力、水压试验、地震和接管载荷,对泵体关键部位进行校核分析和评定,重点分析易损坏部件轴的动力特性、振动特性及疲劳强度,结果表明,该上充泵的设计满足要求。研究对核电用设备特别是泵组设备的抗震分析具有一定的工程意义。 相似文献
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SUMMARY Rapid scanning [1, 2] in ESR spectroscopy is one of the methods by which one can obtain significant information relating to rapid chemical reactions occurring in several milliseconds. One of the advantages of this rapid scanning method is the ability to investigate phenomena occurring rapidly and singly, such as a decay of electrons trapped in a solid matrix. This note reports on the coupling of an electronic computer (JEOL JEC-5) with the rapid scan unit in order to record ESR spectra with high signal-to-noise ratio in several milli-seconds, and also on the successful application of this technique to the study of chemical reactions. This use of the computer is neither as a computer of average transients (CAT) [3, 5] nor as a sampling method for the detection and display of rapidly changing spectra [6, 7]. The apparatus used in this experiment consists of an ESR spectrometer, a Helmholtz coil, a power amplifier, a sawtooth wave generator, a trigger pulse generator, and an electronic computer. A block diagram of the equipment is shown in Fig. 1. Although details of the rapid scan method and the units other than the computer were described in a previous paper [2], several parts have been improved as follows. The dimensions of the Helmholtz coil were changed to 10.2 cm outer diameter and 6.5 cm inner diameter, and the unit was made of 10 turns of 0.7-mm copper wire. By feeding the sawtooth current to the coil after amplification by a solid-state SEPP OTL power amplifier a more linear field sweep was obtained than previously.? The trigger pulse, the repetition rate of which ranges from 200 msec to 10 sec, initiates simultaneously both the sawtooth wave generator and the computer. The purpose of using the computer is to store the ESR spectra observed by the rapid scan method during a rapid chemical reaction and to display these spectra on the chart of a conventional recorder after complete termination of the reaction. About 100 μsec are required for analog-to-digital conversion in the computer used. Sixteen ESR spectra, each of which was ob served for 20 msec, were stored in the computer during a chemical reaction. For this operation a program was compiled so as to store 192 sampling points for each spectrum; the number of these sampling points was sufficient to get a precise and smooth curve for each spectrum displayed. The application of the technique was demonstrated for an experiment on the decay reaction of the electrons trapped in 2-methyltetrahydrofuran, MTHF. 相似文献
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丁醛转化器是重要化工原料丁辛醇生产装置的核心设备,长期以来一直依赖于进口。介绍了某化学公司大型丁醛转化器的工艺原理、基本参数和设计工况,指出了丁醛转化器的结构特点。从丁醛转化器的温度场分析、挠性管板结构、大直径薄壁换热管的技术要求、管与管板连接接头的设计、锻环-管板-筒体的焊接结构、壳程支撑结构等方面阐明了丁醛转化器结构设计的关键技术;从管板的反变形技术、管孔加工、管与管板连接接头的质量控制、管束支撑格栅的精度控制、锻环焊接的无损检测等方面阐述了丁醛转化器制造的关键技术。由合肥通用机械研究院自主设计、中国一重制造的丁醛转化器已有9台,并在丁辛醇装置上成功应用,表明我国已掌握了该类设备国产化的成套技术。 相似文献
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一种自动化上料系统。其储料箱能将待用的零件自动排放整齐,运输保管方便,并能在系统内自动定位。滑托架的托条插入到储料箱零件的底部,能自动循环上料。此种系统,可广泛应用于自动化生产和装配设备的自动化供料。 相似文献