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International Journal of Machine Tool Design and Research最新文献

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Structural Analysis and Improvement of Grinding Carriage in High Speed Camshaft Grinder 高速凸轮轴磨床磨削架结构分析及改进
International Journal of Machine Tool Design and Research
Pub Date : 2020-07-26 DOI: 10.13952/J.CNKI.JOFMDR.2008.01.004
崔中, 文桂林
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引用次数: 0
Research on the Coupling Expansion Mechanism of Balloon-Expandable Coronary Stent 球囊-可膨胀冠状动脉支架耦合膨胀机理研究
International Journal of Machine Tool Design and Research
Pub Date : 2012-01-01 DOI: 10.1007/978-3-642-29390-0_93
Haiquan Feng, F. Guo, Xudong Jiang, Qingsong Han
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引用次数: 0
Simulation Analysis on Backward Spinning of Extra thin-walled Shielding Can with High Ratio of Diameter/Thickness 高径厚比超薄壁屏蔽筒反旋压的仿真分析
International Journal of Machine Tool Design and Research
Pub Date : 2011-08-01 DOI: 10.1063/1.3623691
Xin-he Li, Xiahui He, X. Yang
A new FEM simplified elastoplastic mechanical model is constructed for the backward spinning process of the extra thin-walled shielding can with high ratio of diameter/thickness. The feed mode of the roller adopts the pulsing schedule, which is closer to the actual working condition. Additionally, this new FEM simplified model is significant saving in computing time. In this paper, the metal plastic flow field and the distributions of stress and strain of the deformation zone are studied by the large-scale FEM analysis software MSC.Marc. The causes of the defects of the workpieces are interpreted and the dividing point of the flowing direction of the metal is obtained, accordingly. And the theoretical guidance for the actual processing of the extra thin-walled shield can with high ratio of diameter/thickness is provided. The C-276 shielding can with 0.42㎜ thickness and 561.5㎜ diameter is successfully trial-produced. It proves that above mentioned analysis is reasonable.
针对高径厚比超薄壁屏蔽筒的反向旋压过程，建立了新的有限元简化弹塑性力学模型。轧辊进给方式采用脉动式进料方式，更接近实际工况。此外，这种新的有限元简化模型大大节省了计算时间。本文利用大型有限元分析软件MSC.Marc对金属塑性流场及变形区的应力应变分布进行了研究。分析了工件缺陷产生的原因，并据此确定了金属流动方向的分割点。为高径厚比特薄壁盾构罐的实际加工提供了理论指导。C-276屏蔽层厚度0.42㎜，直径561.5㎜，已成功试制。证明上述分析是合理的。
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引用次数: 0
Construction and design of self adjusting hydrodynamic bearings for precision machine tool spindles 精密机床主轴自调式动液轴承的构造与设计
International Journal of Machine Tool Design and Research
Pub Date : 1986-01-01 DOI: 10.1016/0020-7357(86)90218-0
T.S.R. Murthy

The paper deals with a class of bearings called self adjusting hydrodynamic bearings. The construction of these bearing is such that the bearing clearance adjusts itself depending upon the speed. This feature improves the performance of the bearing. These bearings have preloading facility also. The constructional features and working mechanism of these bearings are presented along with brief design procedures.

本文研究了一类自调节流体动力轴承。这些轴承的结构是这样的轴承间隙调整自己取决于速度。这一特点提高了轴承的性能。这些轴承也有预紧装置。介绍了这些轴承的结构特点和工作机理，并简要介绍了其设计方法。
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引用次数: 5
4562721 Machine for folding sheet metal blanks 4562721折叠板料机
International Journal of Machine Tool Design and Research
Pub Date : 1986-01-01 DOI: 10.1016/0020-7357(86)90105-8
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引用次数: 0
4561163 Fitting doctor blades 4561163安装医生刀片
International Journal of Machine Tool Design and Research
Pub Date : 1986-01-01 DOI: 10.1016/0020-7357(86)90086-7
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引用次数: 0
4561168 Method of making shadow isolated metal DMOS FET device 4561168隔影金属DMOS FET器件的制造方法
International Journal of Machine Tool Design and Research
Pub Date : 1986-01-01 DOI: 10.1016/0020-7357(86)90087-9
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引用次数: 0
Self-adjusting gib for machine tools and the like 适用于机床等的自调节夹具
International Journal of Machine Tool Design and Research
Pub Date : 1986-01-01 DOI: 10.1016/0020-7357(86)90207-6
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引用次数: 0
8600248 Electric circuit for electroerosion machining 8600248电蚀加工用电路
International Journal of Machine Tool Design and Research
Pub Date : 1986-01-01 DOI: 10.1016/0020-7357(86)90108-3
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引用次数: 0
Deformation characteristics and fracture mechanisms during the cold forging of metal powder preforms 金属粉末预制件冷锻变形特性及断裂机理
International Journal of Machine Tool Design and Research
Pub Date : 1986-01-01 DOI: 10.1016/0020-7357(86)90029-6
A.K. Jha , S. Kumar

The paper reports on an investigation into the various aspects of cold forging of iron powder preforms which have been compacted and sintered from atomised iron powder. The influence of particle size, compacting pressure, sintering temperature and forging parameters on relative density of the preform was investigated. Experiments were conducted and measurements were made on the development of barrelling and strain variations at the free surface. Cracks were also observed at the free surface of the perform. The deformation characteristics and fracture mechanism is discussed critically to illustrate the interaction of various parameters involved and the results are presented graphically.

本文研究了由雾化铁粉压实烧结而成的铁粉预坯冷锻的各个方面。研究了颗粒尺寸、压实压力、烧结温度和锻造参数对预制体相对密度的影响。对筒体的发展和自由表面的应变变化进行了实验和测量。在自由表面也观察到裂纹。对变形特征和断裂机制进行了详细的讨论，以说明所涉及的各种参数的相互作用，并以图形形式给出了结果。
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引用次数: 23
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