共查询到20条相似文献,搜索用时 46 毫秒
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磁研磨装置设计中的磁力线分析 总被引:2,自引:0,他引:2
磁研磨是利用磁力的作用进行表面抛光处理的新方法.磁力线的分布情况,严重影响着加工效率.为此,在设计磁研磨装置时,利用计算机软件模拟工作条件,掌握磁力线的方向及强弱变化,及时调整设计结构,可以最大限度地利用磁力,提高工作效率.从磁研磨的加工原理出发,分析了影响加工效率的诸因素,提出一些解决办法. 相似文献
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石英晶体精密研磨技术的研究 总被引:2,自引:0,他引:2
通过实验,着重讨论了石英晶体的研磨机理及研磨速度,研磨压力和磨粒粒径对试件表面质量和研磨效率的影响,并确定了合理的精密研磨参数选用范围,实验采用修正环型环磨机,加工出表面粗糙度Ramax0.7μm的石英晶体表面,为实现石英晶体的超精密抛光准备了必要的条件。 相似文献
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平面磁研磨法的研究:非磁性金属材料的研磨特性和加工机理的考察 总被引:1,自引:0,他引:1
利用磁研磨法加工非磁性金属平板的表面时,在通常的磁性磨料中混入大粒径磁性粒子(铁粒子),可以显著提高加工效率。由不锈钢毛病产板的研磨实验中以看到:混入的铁粒子的粒径及其混合比例对加工效率影响很大。在研磨加工中,研磨压力存在最佳值。 相似文献
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通过PTC的研磨实验 ,研究了研磨时间、研磨速度、磨料种类和粒度以及研磨盘材料等工艺参数对PTC研磨效果的影响 ,并分析其研磨机理。研究结果表明 ,研磨质量主要受磨粒粒度的影响 ;为了提高研磨效率 ,同时保证表面质量 ,减少游离磨料对工件脆性断裂破坏 ,可采用固着磨料弹性研磨磨具进行研磨 相似文献
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文中论述了轴承球研磨的原理及成球机理;并对现有的各种研磨方式的研磨原理、研磨精度、研磨效率等进行了较为全面的比较.最后提出了一种新的研磨装置,并对其进行了简单的介绍. 相似文献
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D. T. Safarov A. G. Kondrashov A. I. Faskhutdinov B. F. Zairov 《Russian Engineering Research》2017,37(11):1014-1016
New designs of cover plates and grinding plates for a universal grinding machine are developed. These designs greatly expand the functional capabilities of the machine. The plates are durable and their operating costs are low. 相似文献
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无心磨床的砂轮轴经过几年的运转,由于轴径部位的磨损过限,造成不能正常工作。通过磨削去除轴径的疲劳层,再进行表面涂镀修复,最终达到修复砂轮主轴的目的。 相似文献
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光学玻璃的激光微结构化砂轮精密磨削 总被引:1,自引:0,他引:1
为了降低大磨粒金刚石砂轮磨削光学玻璃时的亚表层损伤,利用纳秒脉冲激光对金刚石砂轮进行了表面微结构化加工,并采用该砂轮研究了光学玻璃的精密磨削加工。首先,计算了金刚石磨粒在纳秒脉冲激光辐射下的烧蚀阈值和激光束腰半径;然后,分析了纳秒脉冲激光在金刚石磨粒上加工的微结构形貌以及微结构化过程中的热损伤;最后,采用微结构化大磨粒金刚石砂轮进行光学玻璃的磨削实验,并分析了亚表层的损伤情况。实验结果表明:金刚石磨粒在纳秒脉冲激光辐射下的烧蚀阈值为0.89J/cm,激光束腰半径为17.16μm。在粒度为150μm的大磨粒电镀金刚石砂轮上可以实现结构尺寸为20μm的微结构表面加工。与传统金刚石砂轮相比,微结构化砂轮磨削后的光学玻璃亚表层损伤深度降低了40%,达到了降低光学玻璃磨削亚表层损伤的目的。 相似文献
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A number of ferritic stainless steels with high corrosion resistance have recently been developed, but these steels are known to be difficult to grind in coated abrasive-belt grinding operations. In order to formulate or select an optimum oil-based grinding fluid with which such stainless steels can be successfully ground, an optimum base oil was first experimentally selected, and then additives were evaluated for their effect in improving abrasive-belt grinding performance. A paraffinic mineral oil having a certain viscosity was found to be suitable for the base oil. Chemical grinding oil additives were found markedly effective in improving the abrasive-belt grinding performance for both 19Cr-2Mo ferritic stainless steel and SUS 304 austenitic steel, with those containing sulphur or chlorine being superior to those containing phosphorus, fatty acid or alcohol. Among all the additives tested, chemically active oils, such as sulphurized mineral oil, exhibited the best performance. Effects of chlorinated paraffins on the grinding performance could be perceived but were not so great as those of sulphur-series additives. The addition of TCP (tricresyl phosphate) to the grinding oil containing sulphur reduced metal removal in the case of 18Cr-2Mo ferritic stainless steel (SUS 444). In the case of SUS 430 ferritic stainless steel, however, TCP increased metal removal for a comparatively low sulphur concentration, but, above an optimum concentration of 0.4 wt% S, metal removal was reduced by TCP addition. A comparison of sulphur-series additives added to a sulphurized paraffinic mineral oil showed that nonyl polysulphide was superior to any other additives for improving the grinding performance in 19Cr-2Mo steel (SUS 444) and SUS 430. Excess addition of sulphurized fatty oil to a grinding fluid lowered the cutting ability of abrasive grains. 相似文献