共查询到20条相似文献,搜索用时 578 毫秒
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针对手工绘制的同心和偏心大小头零件展开图误差大、实用性差的问题,为了提高设计效率和设计水平,利用Pro/E的钣金模块创建特征模型和参数化技术对模型进行参数化,应用Pro/TOOLKIT函数和Visual C 编写二次开发程序和设计UI接口,实现了同心和偏心大小头零件的展开图设计,提高了生产质量和效率. 相似文献
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研究了在Pro/E环境下钣金件的展开和排样。通过对Pro/E的二次开发,实现了钣金件的参数化展开和自动排样。Pro/E在钣金工艺中的应用缩短了生产周期,提高了生产质量。 相似文献
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利用ProToolkit工具对Pro/E二次开发的"钣金设计检查"功能,分别提取了实体模型与图样注释的钣金厚度和折弯半径数值,进而分析判断这些设计参数是否符合实际生产标准。"钣金设计检查"既能降低钣金设计的错误率,又可提高工程师的工作效率。 相似文献
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在使用Pro/E钣金设计软件进行钣金设计与展开的过程中,按照选取Y值和计算公式来计算展开长度,对同一钣金件只能用同一个Y值来计算。但在实际钣金成形中,由于使用不同类型的成形设备,而不同设备成形折弯处的拉深量不尽相同,使得钣金成形后的实际拉深量与Pro/E计算拉深量数值不一致,造成钣金件成形后累积误差大。针对以上情况,对Pro/E展开长度计算公式进行了重新设计,使软件系统可以对同一部件按成形情况分别计算展开长度。 相似文献
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钣金件制作在烟机产品中占很大比重,而且钣金件类型多样,结构复杂,制作过程中一般采用卷制或压弯成形等方法。目前,Pro/E钣金设计和展开软件在我厂得到广泛应用,利用产品设计图通过钣金展开软件生成展开图,可以大大缩短设计一展开一编程的时问,提高生产效率。 相似文献
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基于Pro/E环境下钣金件展开的计算方法 总被引:2,自引:0,他引:2
肖玲 《机械工人(冷加工)》2007,(10):80-81
2006年第2期在贵刊刊登的《基于Pro/E的钣金展开法的应用实践》一文中,作者(李凤武)进行了传统折弯钣金件展开方法与P钣金开展法的比较,阐述了用Pro/E钣金模块进行展开计算的步骤,但是没有详述。 相似文献
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分析了弹簧片原有工艺方案的不足,提出了解决问题的新工艺方案,介绍了零件特点,并设计了新的模具结构。该模具操作方便,安全可靠,生产的产品符合图样要求。给出了应用Pro/E软件自动计算钣金零件展开尺寸的技术。 相似文献
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离心泵叶轮CAD系统开发 总被引:1,自引:0,他引:1
建立W indows环境下的离心泵叶轮三维CAD系统,该系统运用V isual C ,选择Pro/E为支撑软件,根据离心泵水力设计原则,完成了从离心泵基本设计参数的输入、计算到叶轮轴面图生成这一整套的参数化CAD过程,并生成Pro/E接口文件,然后在Pro/E中实现叶轮空间扭曲叶片的三维实体造型设计,摒弃了传统生成叶轮二维木模图的方法。 相似文献
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Song Qingyu Guo Baofeng Li Jian 《The International Journal of Advanced Manufacturing Technology》2013,69(9-12):2819-2831
An efficient drawing mode for heavy servo press was proposed with four sections which are defined on the whole slide motion stroke. Four key control points, which represent the requirements of drawing process, were employed to realize the eccentric drawing motion profile planning. To reduce the power requirement of the servo motor, a flexible acceleration and deceleration control algorithm was proposed, and the eccentric motion profile of the servo press was constructed based on the algorithm. Then, the optimization model of the drawing eccentric motion profile was established to maximize the production rate, taking into account all boundary conditions including the maximum velocity and acceleration of slide, the space and time limit of feeder, the torque and thermal limit of servo motor. This optimization model was solved by the combination of the penalty function and the complex method, which need the least time. The program of the drawing motion profile optimization was developed and applied on a 2,500 t servo press. Finally, the experimental validation of the body side panel drawing was carried out. The results show that the proposed efficient drawing mode and the optimization method could obtain the optimal motion profile and the maximum production rate. This research provides the theoretical foundation and optimization method for the drawing motion profile optimization design for heavy servo press. 相似文献
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在分析了万吨桨起吊孔和油孔的加工特点后,给出了使用小万向钻和特殊钻头以及间歇进给和退出的办法进行万吨桨油孔的深孔加工;使用小万向钻和专用工装采用先钻后镗,分层切削,逐渐去除余量,扩大孔径直到设计尺寸.经过实际生产的检验,所设计的方案取得良好的效果,可以满足万吨桨加工需要. 相似文献
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黏度是水基拉延油的一个重要物理参数,不同冲压钢的生产需要不同的黏度来配合,因此需要建立模型来控制黏度。水基拉延油是含牛顿流体和非牛顿流体的混合体系,为建立一种可用于预测混合体系黏度的模型,制备不同配比的水基拉延油样品并测试其在不同温度下的黏度,并采用Bingham模型、Cragoe模型、Arrhenius模型和Kendall-Monroe模型、ASTM双参数模型对水基拉延油的黏度进行预测。结果表明,采用ASTM双参数模型来预测水基拉延油的黏度较为准确。为提高ASTM双参数模型的预测精度,考虑水基拉延油组分配比的影响,对ASTM模型进行修正,修正后的模型更适用于含牛顿流体和非牛顿流体混合体系的黏度预测。 相似文献
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汽车覆盖件模具凸型面拉延方法 总被引:1,自引:0,他引:1
针对汽车覆盖件这种具有复杂曲面特征的零件,在传统的全型面拉延成形方法基础上提出一种新的凸型面拉延成形方法。该方法根据拉延成形过程中凸、凹模工作型面上只有凸型面接触板料的特点,通过成形仿真获得全型面拉延的成形极限图(Forming limit diagram, FLD)和凸、凹模与板料的接触区域分布。然后将板料相对凸、凹模工作型面上的起皱区域及双面接触区域所对应的单元剔除,将单面接触区域中面积较小且形态狭长的单面接触区域合并转化为双面接触区域,同时将未转化的单面接触区域外周节点拟合成曲线后导入到CAD中对凸、凹模工作型面进行分割获得所需的凸型面。算例表明该方法在保证拉延成形质量的前提下可以有效地减小凸、凹模工作型面的面积,降低拉延模具的生产成本。 相似文献
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以龙门吊起重机为设计目标,采用数据库管理软件Access和模块化技术对龙门吊进行建模及程序的模块划分,用VB 6.0对SolidWorks 2010软件进行二次开发,提出参数化设计建模的改进方法。将三维模型直接生成工程图进行自动调整,以符合企业生产的标准和要求。参数化技术提高了龙门吊起重机的设计质量,缩短了产品研发周期,提高了企业的设计效率。 相似文献
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Tanit Tangsri Somchai Norasethasopon Kazunari Yoshida 《The International Journal of Advanced Manufacturing Technology》2014,70(9-12):1923-1930
This paper is concerned with the development of ultra-small inner spiral ribbed copper tubes with high-quality heat transfer. Since the demand for the ultra-small tubes in electrical appliances is currently high and will be greater in the future, the technology employed must enable the production of inner spiral ribbed fine tubes with various features, such as small size, high quality, high functionality, and low processing cost so as to meet the increasing demand. The conventional production method is suitable for large tubes with high drawability but is unsuitable for fabrication of long ultra-small tubes because of the difficulty to manufacture both an ultra-small spiral ribbed mandrel and a floating plug. This research paper has proposed four drawing methods as follows: tube sinking, water, oil, and wax as mandrels and presented the comparison of seven parameters, i.e., drawing stress ratio, wall thickness ratio, ribbed base width ratio, ribbed tip width ratio, ribbed height ratio, ribbed pitch ratio, and ribbed spiral angle ratio. It was found that tube sinking was unfit for making the ultra-small inner spiral ribbed copper tubes due to the resulting high ratio of wall thickness. The results of all the parameters were similar in the cases of oil and wax. Despite less impressive outcomes, water was easily removed from the inner spiral ribbed copper tube compared to oil and wax. Thus, the tube drawing using water as mandrel was most suitable for the production of the inner spiral ribbed copper tube. 相似文献