Heat Treat ment of Die and Mould Oriented Concurrent Design

Many disadvantages exist in the traditional die design method which belongs to serial pattern. It is well known that heat treatment is highly important to the dies. A new idea of concurrent design for heat treatment process of die and mould was developed in order to overcome the existent shortcomings of heat treatment process. Heat treatment CAD/CAE was integrated with concurrent circumstance and the relevant model was built. These investigations can remarkably improve efficiency, reduce cost and ensure quality of R and D for products.

An Integration Framework for Digital Progressive Die Design and Manufacturing

This paper reports an effort to develop an intelligent integration framework for digital progressive die design and manufacturing. Both data-and process-centric integration functions are provided by the framework as if a special ight-weight PDM/PLM (Product Data Management/Product Lifecycle Management) and WM (Workflow Management) system is embedded in the integrated engineering environment. A flexible integration approach based on the CAD (Computer-Aided Design) framework tenet is employed to rapidly build up the system while the intrinsic characteristics of the process are comprehensively taken into account. Introduction of this integration framework would greatly improve the dynamic performance of the overall progressive die design and manufacturing process.

Mould filling ability and microstructure of aluminum alloy under electromagnetic die casting

In order to solve the mould filling problem of large thin walled aluminum alloy castings effectively, a new casting technology called electromagnetic die casting has been developed. Emphasis has laid on studying the mould filling ability and microstructure under the mentioned method. The results show that the mould filling ability of A357 is increasing continually with the increasing of the input voltage, that is, the magnetic induction intensity. The pressure head of the molten metal increases from the lowest one at the input of the mould to the highest one at the end of the mould while in a conventional mould the pressure head depends invariably on the sprue height. Under electromagnetic die casting, the grains of A357 alloy are refined, and the pattern of eutectic silicon of alloy changes from rough plate to smooth strip.

HSM strategy study for hardened die and mold steels manufacturing based on the mechanical and thermal load reduction strategy

The paper discussed cutter-work engagement situation hidden behind the mechanical and thermal load effect on cutting edges during high speed hard machining process. The engagement situation was investigated in great detail using experimental and geometrical analytic measures. Experiments were conducted using A1TiN-coated micro-grain carbide end mill cutters to cut hardened die steel. On the basis, a general high speed hard machining strategy, which aimed at eliminating excessive engagement situation during high-speed machining （HSM） hard machining, was proposed. The strategy includes the procedures to identify prone-to-overload areas where excessive engagement situation occurs and then to create a reliable tool path, which has the effect of cutting load reduction to remove the prone-to-overload areas.

Application of transparent casting moulds prepared by additive manufacturing technology in hydraulic simulation

Hydraulic simulation is one of the critical methods to research the filling mechanism of molten metal in the casting process.However,it only performs on test pieces with relatively simple structures due to the limitation of the preparation method.In this study,the method of photocuring additive manufacturing was used to prepare the complex casting mould from transparent photosensitive resin.The pouring test was carried out under different centrifugal conditions,and the filling process of the gating system,support bars and other positions in the vertical direction was recorded and analyzed.The experimental results show that the internal liquid level and the filling process of the test piece prepared by this method can be observed clearly.The angle between the liquid surface and the horizontal plane in the test piece gradually increases as the centrifugal rotational speed increases,which means the filling process is carried out from outside to inside at high rotational speed.The velocity of the fluid entering the runner increases with the increase of rotational speed,but the filling speeds is less affected by the centrifugal speed at other positions.The liquid flow is continuous and stable during the forward filling process,without splashing or interruption of liquid droplets.

DIE&MOULD CHINA2002精品荟萃

我国模具制造业的快速发展使得我国模具市场成为国内外著名模具制造商和模具加工设备制造商眼中的一块肥肉 ,也促使了中国国际模具技术和设备展览会规模一届比一届大 ,水平一届比一届高。今年 5月 10～ 14日在上海新国际博览中心举办的第 9届中国国际模具技术和设备展览会在参展单位、展出规模、展商和展品档次等各个方面都是历届模展中最大和最高的一次。文章根据记者在DIE&MOULDCHINA 2 0 0 2上的所见所闻 ,从众多的展品中挑选出一些水平高、代表性强的加工机床及相关设备加以介绍 。

Agile Manufacturing of Complex Moulds For Punch Devices

This paper focuses on agile manufacturing of complex moulds for punch devices and a decision analysis for the key link of agile manufacturing resources integration—the virtual company in a multivariate criterion universe of discourse. On the basis of presenting an agile manufacturing model of complex moulds for punch devices, we give a fuzzy decision method of two level judgment space of synthetic decision and several key problems which the production of complex moulds for punch devices must face under the architecture hierarchy of agile manufacturing. We give a fuzzy decision method of two level judgment space of synthetic decision and several key problems which the production of complex parts must face under the architecture hierarchy of agile manufacturing.

Optimizing Factory Performance for Unit Cost in Semiconductor Manufacturing

The integrated circuit (IC) manufacturing process is capital intensive and complex. The production process of unit product (or die, as it is commonly referred to) takes several weeks. Semiconductor factories (fabs) continuously attempt to improve their productivity, as measured in output and cycle time (or mean flow time). The conflicting objective of producing maximum units at minimal production cycle time and at the highest quality, as measured by die yield, is discussed in this paper. The inter-related effects are characterized, and a model is proposed to address this multi-objective function. We then show that, with this model, die cost can be optimized for any given operating conditions of a fab. A numerical example is provided to illustrate the practicality of the model and the proposed optimization method.

Flip Chip Die-to-Wafer Bonding Review:Gaps to High Volume Manufacturing

Flip chip die-to-wafer bonding faces challenges for industry adoption due to a variety of technical gaps or process integration factors that are not fully developed to high volume manufacturing(HVM)maturity.In this paper,flip-chip and wire bonding are compared,then flip-chip bonding techniques are compared to examine advantages for scaling and speed.Specific recent 3-year trends in flip-chip die-to-wafer bonding are reviewed to address the key gaps and challenges to HVM adoption.Finally,some thoughts on the care needed by the packaging technology for successful HVM introduction are reviewed.

基于“互联网+教育”的模具设计与制造专业课程教学改革的探索

针对模具设计与制造专业课程理论逻辑性强、过于抽象的教学难点,以互联网为基础,利用网络教学平台,通过线上、线下混合的教学方法及教学反思,不断推动“互联网+教育”在模具设计与制造专业课程中的应用,促进专业课程教学改革,以提高学生学习的自主性,激发学生学习的热情,提高教学质量。

基于专利视角的广西模具产业现状分析与发展建议

以专利分析方法为基础,研究广西模具技术发展和专利布局情况,从专利申请趋势、专利区域布局、主要申请人、技术构成、法律状态等方面开展分析,通过信息采集、数据处理、数据可视化等方法分析广西模具产业发展现状、技术热点研究趋势及各地市模具产业的技术特点和优势,最后结合专利分析总结针对广西模具产业发展提出合理建议。

基于专利视角下分析国内模具产业发展现状与分布情况

结合国家关于模具产业方面的鼓励政策和模具产业领域的专利申请趋势,对国内模具产业技术及地域分布进行分析,通过信息采集、数据处理、数据可视化等方法,分析模具产业发展态势、技术热点研发趋势、产业高端人才情况,并重点分析了模具产业领域专利申请数量排名靠前的5位申请人,为模具产业发展提供知识产权支撑。

模具设计与制造专业班会内容与PTS人生技能课程相融合的研究

模具设计与制造专业学生的班会内容与专业拓展课《PTS人生技能》的内容相融合,先分析模具设计与制造专业的培养目标,阐述拓展课的8个模块,并以“理解和管理情绪模块”为例进行了主题班会的实施过程的介绍。班会内容与PTS人生技能课的融合是一种有益的尝试,班会中应用了课程的“演、思、说、用”4个环节。以学生为中心的理念,经验学习圈理论。让学生在班会中学习和应用人生技能,提升了个人综合素质,为学生的全面发展提供有力支持。

采用增减材复合制造技术的模具修复工艺研究

激光金属沉积增减材复合制造技术是实现模具等高附加值部件修复与再制造的理想候选工艺之一。为了提高模具修复的效率和精度,本文将增减材复合制造技术应用于模具修复领域,并且对修复工艺进行研究。首先根据具体使用工况和材料性能要求,确定了最佳模具修复参数,随后讨论了该模具修复工艺的应用条件和应用范围。实验结果表明:利用本文提出工艺方案进行模具修复时可以实现修复区域无拼接痕迹,并且修复区域硬度提升7.4 HRC,能够有效提升模具的使用性能。

基于虚拟仿真技术的模具智能制造实验教学探索

针对传统的模具课程实验教学模式已无法适应日益发展的教学需求、生均实验设备台套数少以及部分实验危险性高复杂程度高等问题,依托江苏省模具智能制造工程技术中心构建了虚拟模具智能制造实验平台。该虚拟仿真实验平台采用B/S架构设计,支持网页远程操作,可进行多种形式的虚拟仿真实验,平台不仅融入了现代模具企业实际案例,还开发了从设计到装配的全流程高仿真虚拟实验项目。在此基础上,积极探索产学合作模式,围绕应用型工程人才的能力素质要求培养学生。结合近几年的教学实践和调查问卷可以看出,虚拟仿真实验平台充分提高了学生对专业知识的积极性和实验体验并得到学生们的高度认可。

精密模具行业职教本科高层次技术技能人才培养研究与实践

随着精密模具行业智能制造转型升级,岗位技能需求呈现精深性、复合性和创新性的要求,能够服务于生产一线并将技术方案转化为实际生产力的职教本科人才成为行业急需人才。在精密模具高层次技术技能人才培养过程中,通过职教集团和产业学院深化产教融合,人才共育;构建“四位一体”的人才培养模式,培养学生的专业能力、方法能力和社会能力;基于职业导向建设工程实践课程体系,提升学生的专业知识综合应用能力与创新能力;组建“结构优化、校企互聘”的专业教学团队,为高层次人才培养提供师资保障。

模具制造技术的发展与创新

模具制造技术是现代制造业的重要组成部分,其发展和创新直接影响着制造业的生产效率和产品质量。分析了模具制造技术的发展与创新,以期为相关领域的研究者和实践者提供参考。

基于专利视觉的3D打印技术在模具制造领域的应用研究

以incoPat构建3D打印技术及其在模具制造领域应用的检索分析数据库,采用定量、定性分析法,从申请趋势、区域布局、主要申请人、技术发展趋势、核心专利等多角度对专利数据进行分析。全球3D打印技术处于快速增长期,其在模具制造领域的应用越来越广,中国在专利数量上位居全球前列,紧跟全球技术发展热点,基于专利视觉开展3D打印技术在模具制造领域应用的分析,为中国模具制造3D打印技术发展提供技术参考。

数控加工技术在模具制造中的应用

随着当前科技的演进,数控加工技术的出现,为机械模具的制造领域带来显著变化。通过数控技术的精细化操作,产品的质量和加工精度得到提升,同时也提高生产效率。探讨了数控加工技术在模具制造中的广泛应用及其显著优势。数控车削、电火花加工和数控铣加工等技术为模具生产提供了高精度、高效率的解决方案。这些技术的应用不仅优化了模具加工的表面质量,还通过严格控制误差和调整生产流程,确保了模具制造的精确度和效率。