共查询到20条相似文献,搜索用时 109 毫秒
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聚晶金刚石加工技术进展 总被引:2,自引:0,他引:2
介绍了国内外正在研究和已经应用的聚晶金刚石的主要加工方法,即磨削加工、研磨加工、电火花加工、激光加工、化学加工、超声加工和复合加工,并对这些加工方法的特点、机理及影响因素、适用范围进行了分析。 相似文献
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一种超精加工方法—滚压加工 总被引:1,自引:0,他引:1
张卫民 《组合机床与自动化加工技术》1991,(6):16-20
本文综述了滚压加工原理、滚压加工用的工具、加工条件、加工参数及其相互关系等。 相似文献
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电火花摇动加工微细阵列轴和孔的试验研究 总被引:1,自引:0,他引:1
针对微细阵列轴和孔的电火花加工,提出了利用数控电火花加工机床摇动功能的摇动加工微细阵列轴和孔的方法.此法是基于电火花反拷贝加工的原理,先用丝电极在薄平板(中间电极)上按要加工的阵列轴和孔间距或数倍间距加工阵列小孔(直径0.1 mm以上),然后用加工的薄平板(中间电极)作电极,电火花摇动加工微细阵列轴(电极),最后用此微细阵列电极加工阵列孔.进行了电火花摇动加工微细阵列电极试验,得到了单电极直径为50 μm、长径比为16的3×3阵列电极,并用此电极在70 μm厚的不锈钢板上加工出单孔直径为70 μm的3×3微细阵列孔.试验结果表明,电火花摇动加工方法可实现微细阵列轴和孔的加工. 相似文献
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介绍了两种大直径工件分度圆周孔非常规的机械加工技术,并经实际操作检验证明了其操作方便,加工精度高,加工品质可以媲美大型镗床,解决了大直径工件分度圆周孔需借助大型镗床进行加工的难题。 相似文献
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对PPD汽缸体顶面油孔加工提出了切实可行、合理的工艺加工方案;根据加工方案确定了工艺装备的设计和专用机床的总体方案;介绍了汽缸体顶面油孔的加工方案和夹具设计。经计算,采用立式与卧式相结合的配置形式的专用机床加工油孔具有加工效率高、加工质量好等优点。 相似文献
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Development of new-concept desk top size machine tool 总被引:6,自引:0,他引:6
A desktop multiprocess machinery has been designed that has two concepts: miniaturizing of machine tool and multiprocessing with a same machine tool. The prototype of desktop multiprocess machinery is developed in this study. This is tabletop size machine tool that has five changeable machining heads. Outline of main body and machining head are presented.In order to know the basic accuracy of desktop multiprocess machinery, experimental evaluation is carried out. Machining head setting error, stiffness of multiprocess machinery and straightness of X, Y, Z stage is measured. To study the basic performance of desktop multiprocess machinery, a complex machining experiment is carried out with the developed machine tool. The complex machining consists of three steps: electrode machining by milling, hole shaping by EDM, and hole finishing by ECM. These steps are performed in sequence on the same machine tool. The complex machining is successfully carried out. In order to evaluate the desktop multiprocess machinery from environmental point of view, machining energy, volume of machining liquid, and installation space of desktop multiprocess machinery are measured. The measured values are compared with estimated values with conventional machine tools. The machining energy, the volume of machining liquid, and the installation space of desktop multiprocess machinery are smaller than those of conventional machine tool. 相似文献
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In this paper, the application of micro electrochemical machining (ECM) for the micromachining of internal features is investigated. By controlling pulse conditions and machining time, micro features are machined on the side wall of a micro hole. These methods can easily machine a micro hole with larger internal diameters than the entrance diameter, which is very difficult to do by the conventional processes. A micro disk-shaped electrode with an insulating layer on its surface is also introduced to machine microgrooves inside the hole. This method is similar to the turning lathe process. The purpose of this study was to confirm the various possibilities of making complex internal structures in a micro hole by micro ECM. 相似文献
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针对加工六缸曲轴主轴颈孔、连杆颈直油孔的需要而设计的卧式双面多工位数控钻削组机。其夹具带有柔性化设计,防漏结构也较为巧妙。 相似文献
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在机械加工中,常会遇到与机床主轴不垂直的空间大斜孔系的铣削加工。在三轴联动的数控镗铣床上,采用万向角度铣头改变机床主轴方向,使孔轴线与铣刀轴线一致,运用空间几何建立各加工变量之间的数学模型,实现空间斜孔铣削加工数控程序参数化。结果表明:只需一次装卡工件,赋予相应变量值,就可完成孔系的加工。该方法的加工精度高,省工省力,可推广到类似空间斜面、倾斜槽的加工。 相似文献
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Min-yang Yang Jin-ho Park 《International Journal of Machine Tools and Manufacture》1998,38(8):965-979
Generally, in machining precision machine elements such as ballscrews, machining errors could occur for various reasons. In this research, the influence of improper setting errors in ballscrew machining, such as misalignment between centers, runout of spindle, and unsuitable contact conditions between the center and the center hole, was analyzed. From the analysis, among the setting errors, the misalignment between centers was found to be an important one. An automatic adjustable center for 2D arbitrary positioning was designed and manufactured to eliminate the alignment error in machining workpieces supported by two centers. This adjustment system could be practically applied to reduce machining errors. 相似文献
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