共查询到19条相似文献,搜索用时 62 毫秒
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对硬质合金刀具进行磁控溅射离子镀TiN 处理,并将其与未镀层硬质合金刀具试样在相同的条件下进行滑动摩擦实验,比较其摩擦磨损性能并分析了磨损机制.结果表明,磁控溅射离子镀TiN涂层能使刀具获得高硬度层,有效降低刀具表面的摩擦因数,明显提高硬质合金刀具的耐磨性能. 相似文献
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提高刀具耐用度的磁处理技术研究 总被引:5,自引:0,他引:5
刀具磁处理工艺是一种提高刀具耐用度的有效工艺方法。作者通过对磁处理技术的研究,研制开发出一种便携式刀具磁处理装置。这里详细介绍了该装置的系统组成和工作原理,并通过对工厂试用效果的分析研究,探讨了磁处理工艺对提高刀具耐用度的机理。 相似文献
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阐述利用计算机校核剃齿刀通用性的方法,具有快速、准确、方便等特点,同时还能为刀具刃磨提供基本参数,在 工程实践中具有重要的实用价值。 相似文献
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The objective of the present work is to investigate and discuss some features of the surface damage and material removal process during particle-wall collision of the solid particles and hardmetal and cermet targets. The restitution parameters of TiC-base cermets, WC–Co hardmetals and glass of different composition and properties have been investigated. In order to clarify the details of the impact of glass spheres and corundum particles of irregular shape on a solid half-space, the process of interaction of solid particle with target was studied using a Laser Doppler Anemometer (LDA) measuring technique. Targets were impacted with particles over the range of impact velocities (7–50 m s−1) at impact angle 67°. The experimentally observed variations of the coefficient of velocity restitution as a function of the test material properties, impact velocity and hardness ratio (Hm/Ha) are adequately explained on the basis of a theoretical model. Systematic studies of the influence of the impact variables on the collision process have been carried out. 相似文献
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介绍基于工程数据库可转位式盘状成形铣刀的CAD系统 ,并以加工转子螺旋槽为例 ,阐述可转位式盘状成形铣刀的设计原理、结构特点和加工仿真方法 相似文献
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Tetiana O. Pryhorovska 《Machining Science and Technology》2017,21(1):37-66
The article focuses on the problem of polycrystalline diamond cutter (PDC) cutters' overlapping influence on rock reaction force. This study proposed a static force balance model, based on the model of Wojtanowicz and Kuru (1993). The innovation of this model is considering two types of friction forces, acting on the contact frontal surface and the lateral surface of a PDC cutter, respectively. Additionally, the proposed model assumes a rock reaction force direction not orthogonal to the contact surface of a cutter but parallel to the crack propagation direction and similar to the rock heterogeneity direction.Numerical study was provided for a new and a worn PDC cutter to define a rock reaction force depending on options of adjacent cutters' placement (cutters' shape, cutter sizes, bake rake angle, side rake angle, etc.). Two main tendencies were observed: increasing of lateral plot of a cutter decreases rock reaction force, and deviation between directions of cutting force and crack propagation is an extremely significant factor and affects rock reaction force magnitude. 相似文献
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铣削加工表面粗糙度的形成与铣刀和工件振动、主轴偏心、刀具磨损、刀具变形等物理和几何因素有关。多年来中外学者针对各种影响因素建立了“相对单一”的数学模型。这些数学模型只考虑了一种或两种影响因素,还没有建立起描述物理和几何变化过程的综合数学模型,为此对这些相关因素进行了深入研究,建立了基于球头立铣刀的铣削加工表面粗糙度仿真的整体数学模型。从而为虚拟数控加工仿真提供技术支撑。 相似文献