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介绍SolidWorks软件二次开发的方法与关键技术,给出金属导管三维参数化建模的思路与方法,利用Visual C++6.0中ATL的方式对SolidWorks2008进行二次开发,实现金属导管三维参数化建模过程,结果表明利用SolidWorks二次开发进行三维参数化建模的优越性。 相似文献
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基于MDT的齿轮三维参数化建模技术研究 总被引:3,自引:0,他引:3
目前,参数化建模技术已经成为三维CAD产品设计的主流,MDT作为目前运行于微机上的优秀三维机械CAD软件之一,是功能强大的参数化特征建模工具。本文以标准直齿圆柱齿轮的参数化建模为例,论述了采用MDT的二次开发技术及其本身的三维建模技术建立这类具有精确的曲线轮廓的零部件的三维实体模型,也为其它类似的零部件的三维建模提供了一种切实可行方法。 相似文献
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SolidWorks中换热器管板三维参数化设计 总被引:1,自引:0,他引:1
在研究了管壳式换热器管板三维建模方法和自动布管原理的基础上,使用Visual Basic 和Microsoft Access对SolidWorks进行二次开发,采用系统参数化建模和程序参数化建模相结合的方法对管板进行三维参数化建模.同时,利用修改工程图参考的方法实现了工程图的自动绘制.软件具有良好的适应性、人机交互性及扩充性,提高了设计效率和质量. 相似文献
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《中国新技术新产品》2016,(14)
本文针对Creo二次开发的参数化设计原理进行了研究,论述了利用三维模型与程序控制相结合的开展Creo参数化设计的方法。详细介绍了侧墙零件的参数化设计方法包括:侧墙的建模实施参数化定义、参数关系添加、快速生成工程图、数据后台配置并利用VC++编程软件开发人机界面。最后利用Oracle数据库对侧墙零件模型进行管理。 相似文献
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《中国新技术新产品》2015,(20)
本文针对涡轮通用零部件花键、圆弧端齿和涡轮轴,先经过初步设计将限制条件和尺寸驱动参数连接起来;再通过对UG二次开发完成的参数化建模实现了对零件及特征模型的快速建模和快速修改,验证了参数化设计方法的便捷性,同时在单个零部件参数化建模开发完成之后将其整理成了一整个的典型零部件建模系统,减少其在设计过程中的重复劳动,节省设计时间。 相似文献
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利用 PRO/E 参数化建模的特点,介绍了在 PRO/E 中通过二次开发快速建模的方法;以齿轮建模为例,采用参数化方法建立齿轮模型,开发了齿轮快速建模的模块,并以此模块建立了某行星式变速箱模型。 相似文献
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针对汽轮发电机定子端部绕组结构的复杂性提出了用圆锥面展开图实现空间三维形状的线棒建模方法.通过分析绕组的结构及设计成型和组装原理,建立了线棒参数化建模及装配的数学模型,并给出了三维建模的关键步骤,在此基础上结合二次开发技术、计算机编程技术以及数据库技术设计开发了基于UG/NX平台的汽轮发电机定子端部绕组参数化自动建模系统.以某百万千瓦级汽轮发电机定子端部绕组为例,验证了该建模方法及参数化自动建模系统的有效性和可行性. 相似文献
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《材料与设计》2015
In the present work, for the first time, an analytical approach based on upper-bound theorem is proposed to analyze the simple shear extrusion process. In this regard new die parameter named maximum inclination angle is introduced. By this model, the power dissipated on all frictional and velocity discontinuity surfaces is determined and the total power is optimized for two types of die, fixed and movable inlet channel die. To check the validation of the upper-bound model, the process is simulated by the commercial finite element code, Deform-3D. To compare the theoretical results with experiments, a fixed inlet channel die and two dies with movable inlet channel are used to determine the processing force for different cross sections. The developed model predicts that the relative extrusion pressure increases with increasing the constant friction factor; also, for a given value of the constant friction factor and the maximum distortion angle, there is an optimized maximum inclination angle which minimizes the power. Comparing the fixed inlet channel die with the movable inlet channel one, it is seen that the optimized maximum inclination angle is higher in the FIC die. 相似文献
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基于Mg-3Zn-1Zr合金本构方程运用Defrom-3D软件对多种Mg-3Zn-1Zr合金细径管材的挤压模具参数的配合进行了有限元模拟分析。结果表明:挤压模入口圆角半径一定时,挤压模模角越大,挤压杆的载荷越小,挤压模圆锥段发生紊流现象越严重,挤压死区越大。挤压模入口圆角处的磨损最为严重,当挤压模模角为120°,挤压模入口圆角半径为2 mm时,模具磨损最小,挤压载荷和模具应力也较小。工作带长度超过4 mm时,随着工作带长度的增加,模具磨损深度显著增大,管材与模具易产生黏结,进而产生缺陷和变形不均匀。采用模拟优化的模具挤压出的Mg-3Zn-1Zr合金细径管材表面质量良好、尺寸精度高,说明基于Deform-3D有限元分析能够为实际模具设计与镁合金型材的生产提供可靠参考。 相似文献
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Study on Numerical Simulation of Mold Filling and HeatTransfer in Die Casting Process 总被引:5,自引:0,他引:5
1. IntroductionDie casting is a very complicated process which involves the high speed flow of molten metal filling into3-dimensional complex geometry. The molten metalflow pattern and the temperature distribution of thedie casting and the dies, have a critical influence onthe quality of the cast products, the production rateand the die life.The application of CAE (computer aided engineering) analysis in die design gradually becomes possibleand popular. The main idea is to analyze or predict… 相似文献
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针对阀体传统制造工艺效率低、锻件性能差、成本高等问题,本文提出采用先进的多向模锻工艺进行阀体制造,并以一种不等径四通阀体为典型对象,结合Deform-3D数值分析进行工艺研究.首先,根据不等径四通阀体的结构特征,确定了分模面,并依此设计了两种锻件图;其次,根据锻件图设计了 3种不同的多向模锻结构,并分别确定了模具的加载... 相似文献
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A. F. M. Arif S. S. Akhtar A. K. Sheikh 《Journal of Failure Analysis and Prevention》2009,9(3):253-261
The current paper presents results about the effect of Al-6063 billet quality on the service life of AISI-H13 hot extrusion
dies based on microstructural and statistical investigation. In the first half of the paper, secondary (remelt) billet cast
in-house at local extrusion plant is compared with two sources of primary (smelter) billet by applying different material
characterization techniques including optical microscopy, hardness measurement, x-ray diffraction (XRD) analysis, and energy-dispersive
spectroscopy (EDS). The second half of the paper evaluates the performance of primary and secondary billet types based on
statistical analysis of data collected on 53 hollow-profile dies from a local commercial extrusion setup. It was observed
that the secondary billet has a comparatively coarse grain structure, nonhomogeneous distribution of secondary phases, and
high hardness that can be associated with poor casting and homogenization practice. Statistical analysis covers overall analysis
of collected data followed by detailed study of percentagewise use of billet quality in terms of die profile complexity/extrusion
ratio. Analysis has shown that dies extruding a high percentage of secondary billets are more susceptible to early die failure
on overall basis. For more complex dies with high extrusion ratio, average die life further reduces with increased percentage
of secondary billet usage. Regression models are also proposed for prediction of die life in terms of secondary billet usage
and extrusion ratio. Considering results of present microstructural and statistical analysis, some suggestions during in-house
billet preparation of secondary billets have been formulated to prevent early die failure. 相似文献