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中国重汽集团是中国重型汽车工业的摇篮。在开发的重型卡车和特种工程车辆中,橡胶配件用量较大,例如板簧支架,主要安装在座椅下方,起到缓冲减震的作用。以往此类产品的研发和注塑成型主要依靠经验,或者通过不断试模改进产品品质。急需一款CAE软件,可以在研发阶段进行成型仿真,查看产品的硫化过程以及判断成型可能存在的缺陷,避免产品在使用过程中由于某种成型问题影响产品的使用寿命。
根据客户目前面临的问题,通过Autodesk Moldflow反应成型的仿真模块,可以帮助客户对产品进行成型仿真,通过以下结果判定产品品质缺陷:
1. 橡胶在型腔内的流动模式,主要关注熔接线和困气位置,这两个问题会影响产品强度;
2. 产品固化过程结果,可以查看橡胶制品在冷却过程中各个位置的固化时间,判断在设定周期内,橡胶制品是否存在硫化反应不充分的位置或者过熟的区域,这两种区域都会影响产品强度和使用寿命;
3. 可以分析模具和设备的加热系统设计是否合理,由于模具温度分布主要影响橡胶硫化程度,可以通过产品瞬态温度变化和平均温度变化,查看产品各处温度是否均匀,从而判断橡胶硫化是否合理。
通过Autodesk Moldflow反应成型的仿真模块,可以帮助客户:
1. 反应成型模型选择原则以及模型处理方法;
2. 反应分析工艺参数设置;
3. 反应分析结果设置与判读;
4. 反应分析结果与实际验证对比方法;
5. 线上、线下的技术支持。
培训视频以及技术支持PPT文件,内容包括:
1. 反应成型对模型和网格类型的要求;
2. 选择合适的分析类型;
3. 查看熔接线位置和困气位置,确定产品熔合时是否有包胶困气现象,该缺陷会影响熔合位置的机械强度;
4. 通过冷却(FEM)分析模块,模拟模具温度变化,通过查看模具温度(开始后瞬态)查看在注塑周期内,模具变化情况,可以判断橡胶硫化过程是否在合理温度内。
通过该项目,为我司在橡胶反应成型方面积累了宝贵经验,可以向包含有橡胶制品设计与生产的企业推广该解决方案,在为客户解决橡胶制品成型缺陷的同时,推广软件。类似如汽车橡胶密封圈生产企业、医用硅胶制品生产企业、橡胶或者硅胶日用品生产制造企业,均是该解决方案的目标客户。
通过使用Autodesk Moldflow中的反应成型中的冷却(FEM)+充填+保压分析模块,对橡胶制品的成型过程进行模拟仿真,并且通过熔接线、困气结果作为影响产品强度和寿命的判定结果,同时通过查看产品温度(瞬态)判断橡胶在硫化过程中的温度变化,为前期对产品疲劳开裂的评估提供数据支持。并且随着分析结果与实际产品进行对比,制定了判定标准,不断提高评估的准确性。为产品结构优化、模具方案优化提供了有效的数据支持。
Project summary
Duration & delivery
Autodesk solutions
Services provided
Customer industry
甘肃四儿沟门金矿采选尾工程
客户因参赛需求,今年增购了 Autodesk Product Design & Manufacturing Collection 与 Architecture, Engineering & Construction Collection 软件集,客户属于综合性公司,本次项目包含了地下矿体与巷道、地表选厂、排土场、尾矿库四个部分内容,在这是个内容里面的设备模型、设备动画、设备图纸全部采用 Autodesk Inventor、 Autodesk AutoCAD 等软件做出。客户面临的挑战是: 1、时间紧,客户决定参赛到参赛报名截止日不到两个月; 2、客户基础薄弱,客户这边没有任何三维建模的基础,需要现场培训、学习、运用。 3、此项目是建筑业与制造业相互融合类属性,经验较少; 4、客户参与项目的成员非全部脱产; 5、客户提供的设备图纸及尺寸不完整……
基于PowerMill和二次开发帮助客户提升编程效率和加工品质
客户是一家专业生产精密注塑模具及塑料制品的高新技术企业,是厦门地区最有影响力的模具生产企业之一。该企业目前面临着编程人员编程效率提升有限,遇到一些复杂模具如深腔模具,编程难度大,安全系数低,编程效率低等问题,所以如何利用现有的人员、设备、资源提升编程效率和加工质量是目前公司主要的问题。
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