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金刚石车刀的设计与刃磨工艺的研究 总被引:2,自引:0,他引:2
金刚石刀具在精密及超精密加工中广泛应用,但对其研磨工艺及设计研究较少,工厂存在着研磨后的金刚石刀具刃口出现锯齿、刀面光洁度不高、刀具寿命短等问题,从而影响产品质量及金刚石刀具性能的发挥,所以工厂要求对上述问题加以解决。为此,我们对金刚石的研磨工艺及设计进行了系统的试验与研究,提出了提高研磨质量的措施与数据,也提出了金刚石刀具的设计原则和步骤,以及人工定向的方法、步骤等,以保证刀具的使用寿命。 相似文献
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在对金刚石刀具研磨过程中容易造成研磨压力波动的主要因素分析的基础上,就金刚石刀具研磨压力的自适应控制做了详细的研究,以期为今后金刚石刀具研磨相关工艺技术的研究奠定一定基础。 相似文献
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金刚石刀具研磨设备与研磨技术的研究 总被引:4,自引:0,他引:4
分析了超精密金刚石刀具的研磨要求,研究了金刚石刀具研磨设备与技术。试验表明,用该套技术研制的刀具,刃口平直、光滑、无缺陷,能满足超精密切削的要求。 相似文献
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分析了超精密金刚石刀具的研磨要求,研究了金刚石刀具研磨设备与技术。试验表明,用该套技术研制的刀具, 直,光滑,无缺陷,能满足超精密切削的要求。 相似文献
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髓着精密与超精密加工的不断发展,金刚石刀具的应用越来越广泛。但在金刚石刀具的刃磨质量上还存在着许多问题,表现在金刚石刀具的刀刃上有崩口和刀具光洁度不稳定。针对工厂的这些问题,我们对减少崩口和提高刀具光洁度做了深入系统的研究,通过研究,己经可以保证金刚石刀具有极其平直的刀刃和稳定在▽14c的光洁度。并从中总结出要磨好一把金刚石刀具,应具备下列条件:①精密的金刚石研磨机床;②正确的研磨工艺;③科学的选向。下面,结合试验结果来详细说明。 相似文献
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针对金刚石车刀在使用中存在的刃口出现锯齿、刀面光洁度不高和寿命短等问题,叙述了金刚石刀具的设计原则及步骤,人工定向的方法及步骤,以保证刀具的使用寿命。文中还对金刚石晶体结构特点,硬度变化规律、最佳研磨方向的选取、原料的选取和定向、影响研磨质量的因素等问题进行了分析与说明。 相似文献
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Truing and grinding forces and the wear mechanism of particle and rod diamond blade tools used to generate precise and intricate forms on rotating vitreous bond silicon carbide grinding wheels are presented. A Hall effect sensor was used to measure the change of grinding spindle power during truing and grinding. A signal processing procedure was developed to identify individual truing passes and to extract the average, peak-to-valley, and standard deviation of the variation of truing force for each pass. The truing force data and SEM micrographs of worn surfaces on blade tools reveal micro- and macro-fracturing of the diamond. The attritious and erosion wear of the diamond rod and particle, erosion of the metal bond, and pulling-out of the diamond particle are also identified. Grinding force data shows that, for the same truing parameters, a wheel trued by the rod diamond blade tool has higher grinding forces than one trued by a particle diamond blade tool. 相似文献
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The wear of stationary blade diamond tools used to generate a precise and intricate form on the vitreous bond grinding wheel is presented. Two types of blade tools made of rod and particle diamond were used. A method to measure the wear of the blade diamond tool in the μm-scale range using the size difference of two parts ground before and after truing was introduced. Two sets of experiments with four truing feeds and four tool traverse speeds across the grinding wheel were conducted on the rod and particle blade diamond tools, respectively. Experimental results showed the wear rate of blade diamond tools was improved at higher truing feeds and traverse speeds due to the brittle fracture of the abrasive and vitreous bond. 相似文献