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黄岩模具产业萌芽于20世纪 50年代中期。1986年,原机械工业部副部长杨铿来黄考察时,誉称黄岩为“模具之乡”。黄岩的模具现已发展成为基础扎实,优势明显的支柱产业。 相似文献
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贾云鹏 《机械工人(热加工)》1989,(3):43-45
在模具加工中,对于数量少的、急用的及高温淬火的模具,我厂采用箱式高温电阻炉淬火,而加热防氧化脱碳问题是箱式电阻炉淬火的关键。经过多次试验,我们选用了“浙江黄岩城关特种涂料厂”生产的高温抗氧化涂料“1309”。但该涂料的干燥周期较长,生产中很不方便,因此使用工艺急待改进。本文就工艺改进后,涂料的防氧化脱碳效果,以及对工件淬透性,淬火回火后工件硬度均匀性的影响等问题进行了探讨。 相似文献
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目前,作为一个独立的行业,模具工业已经取得了快速的发展,在湖北黄冈、浙江黄岩、江苏昆山一带已形成了产业集群。这是一个融设计、锻造、机加工、材料及热处理于一体的技术密集型行业。 相似文献
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探讨激光熔覆金属粉末快速原型技术直接制造铸造用金属模具的问题。文章介绍了这种技术的特点:快速直接制造金属原型,其制件的结构、形状和功能特性都能符合最终用途,可大大缩短产品的开发周期。通过分析砂型金属模具、金属型、压铸型、石蜡模母模和消失模母模等铸造模具的结构特征和在制造上的要求,说明了激光熔覆金属粉末快速原型技术适用于这些铸造模具的制造;指出了在应用中需要进一步轻量化、低耗化,并分别提出了可行的对策。随着各种相关技术的发展及其综台、集成度的提高,激光熔覆金属粉末制造铸造模具的轻量化、低耗化将逐步实现,其应用将更广泛。 相似文献
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研制了能够实现X、Y、Z三轴直线运动和绕X、Z两轴转动的空间五自由度电化学超精密研磨机床。利用该机床,可以对电化学超精密研磨技术进行工艺研究,实现模具型腕的光整加工。 相似文献
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概述了计算机辅助设计(简称CAD)在塑料模具行业中的应用情况,简述了计算机辅助注塑模具设计的内容和基本要求,并提出了塑料模具CAD在我国的应用对策。 相似文献
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模具的数字化设计与制造 总被引:1,自引:0,他引:1
在中国国家自然科学基金重点项目《特大件成形制造技术基础研究》资助下,探讨数字化技术对成形制造相关技术的影响,讨论模具数字化设计与制造的概念、内涵和特点,提出模具数字化设计与制造的主要支撑技术——模具数字化设计、加工和分析技术,对支撑技术的现状、研究重点以及今后发展方向进行评述。 在模具数字化建模技术中,基于特征的建模技术是新一代建模技术。特征技术表达的模具信息完备且含有丰富的语义信息,特征是模具形状和属性的信息集合,能够方便地描述形状,为加工、分析、制造、装配甚至使用提供必要且充分的信息,是完整描述模具信息的方法,已成为在模具设计、分析、制造、装配等应用之间传递信息的纽带。 模具设计是一个典型的弱理论领域,具有很强的经验依赖性,因此保存和重用已有经验和知识具有特殊的重要性。这促使人们将知识工程应用于模具设计领域。知识工程研究的重点在于基于知识的模具建模,工程知识的融合和繁衍技术, 工程知识的表示和推理技术。 相似文献
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Chil-Chyuan Kuo Ming-Ren Li 《The International Journal of Advanced Manufacturing Technology》2017,90(1-4):21-25
Cost and time are two major concerns that are needed to manufacture new sheet metal forming dies in the industry. A cost-effective approach for rapid production of sheet metal forming dies with excellent wear resistance and mechanical properties was developed using additive manufacturing and rapid tooling technologies. This paper deals with the effect of zirconia (ZrO2) addition on the mechanical properties of sheet metal forming dies. Sheet metal forming experiments confirmed that the sheet metal forming dies fabricated by epoxy resin filled with 30 wt% ZrO2 particles have the low corner wear. The sheet metal dies can be fabricated within 2 days to meet the requirements of reducing the development time in the research and development stage for a new product. 相似文献
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Electroless nickel–phosphorus (Ni–P) plating used in a range of hot embossing metal molds/dies and injection metal molds/dies must be manufactured to nano-precision roughness for proper operation of the molds/dies. We therefore developed a novel polishing technique for mirror surface finishing of this kind of magnetic material using a magnetic compound fluid (MCF) slurry. The effects of the magnetic and gravitational forces acting on the carbonyl iron particles (CIPs) and abrasive particles (APs) within the MCF slurry were studied first, and the behaviors of the CIPs and APs in the presence of an external magnetic field were predicted. Then, experiments were performed to confirm the predictions by investigating the distribution of the CIPs and APs on the working surface of the MCF slurry. Finally, four MCF slurries containing CIPs and APs with different diameters were employed to finish the Ni–P-plated STAVAX steel specimen at different working gaps. The results revealed that for the magnetic workpiece, the resultant vertical force attracted CIPs towards the work surface, whereas APs were pushed away from the work surface. However, the CIPs and APs showed opposite behaviors with the non-magnetic workpiece. The percentage of APs distributed on the working surface increased and the distribution became more even as either the diameter of the CIPs or the working gap increased, whereas that of CIPs had the opposite tendency. The MCF slurry containing bigger CIPs and smaller APs should be employed and the working gap should be set at a smaller value in order to perform mirror surface finishing of a magnetic Ni–P-plated surface. Under the experimental conditions in this work, the Ni–P-plated surface quality improved significantly, and a mirror surface roughness (Ra) of 4 nm was successfully achieved without leaving scratches or particle adhesion when using an MCF slurry containing CIPs 7 μm in diameter and APs 1 μm in diameter, showing that MCF slurries containing commercial CIPs are applicable to the nano-precision finishing of magnetic materials. 相似文献
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锥齿轮锻件原切边模结构不尽合理,模块刃口加工方法落后,模具寿命低、切边质量差.提出新型切边模结构和刃口齿形设计计算公式,论述模具制造工艺、模块翻新和模具系列化方案.新型模具克服了原模具的缺点,显著提高了锻件切边质量和模具寿命,降低了模具成本. 相似文献