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俄罗斯产NC800柔性制造单元,采用日本FANUC-0MC数控系统,X、Y、Z三轴联动,交流伺服主轴。链式刀库可安装100把刀具,一个装卸台,一个旋转台站上有6个交换台板,一个B回转工作台(分度转台,每3度等分)。刀库、旋转台站、B台伺服电机的旋转采用PLC控制,融合了计算机技术、电气、机械、液压、气动系统,机械结构复杂,维修难度比较大。为了便于维修,对该机床的电机、电器元件数量作了统计,具体数目如下:a.交流进给伺服电机:6台;b.交流主轴伺服电机:1台;c.普通交流电机:11台;d.机械式限位开关:16只;e.感应式接近开关:46只;f.直流继电器(DC 24… 相似文献
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(续三) 3.14 NC800在回参考点时出现红色报警:520 OVERTEAVEL: Y 故障现象:Y轴在正方向上撞上Y轴 y硬件行程限位开关 分析及处理过程:如图3所示,经查是回参考点的减速碰块位置向上发生移动,致使限位开关撞上了硬件限位碰块. 相似文献
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The oxidation of a commercial high nickel alloy, Incoloy 800 (32Ni-21Cr-46Fe) has been studied in a slowly-flowing environment of air containing 500 vpm HCl (g) and 13,000 vpm H2O (g) at a working temperature of 800°C for times up to 250 h. Severe spalling of the oxide corrosion products were observed upon cooling and this behaviour was compared to that observed after oxidation in HCl-free moist air. The effect of temperature cycling between the working temperature and ambient was also studied. Gravimetric, metallographic, electron probe micro-analysis and X-ray diffraction results are presented along with observations of morphological detail revealed using scanning electron microscopy. The results indicate that apart from having a serious effect on oxide adhesion, the presence of a halogen-rich region at the alloy-oxide interface significantly affects the transport of metal ions, principally chromium, iron and titanium to the oxidising surface. 相似文献
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Fractures of group II (according to the classification given in Part 1) are described in detail. The deviations of the structure of a fracture from the groups of fiber and crystalline fractures are explained by the chemical micro- and macroinhomogeneity of the metal. The characteristics of fractures, the causes of their formation, the methods for fighting and eliminating them, and the interrelation with the mechanical properties of the steel are described. Every kind of fracture is illustrated. 相似文献
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(续二)3报警提示结合现象进行检修例1:一台配套FANUC 7M系统的加工中心开机后,CRT显示ALM05、ALM07报警。引起05、07号报警的常见原因有:数控系统的机床参数丢失或伺服驱动系统存在故障。检查机床伺服驱动系统,发现X轴速度控制单元上的TGLS报警灯亮,即:X轴存在测速发电机断线报 相似文献
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基于MRPⅡ和MES的车间成本管理系统 总被引:4,自引:0,他引:4
在市场经济条件下,在开放的、全球经济一体化的信息时代,企业综合运用成本、质量、服务、速度等因素在市场中进行全方位的竞争,而成本又在企业竞争力中占据至关重要的地位。如何适应市场的要求,建立以成本为中心的管理体制,对于有效进行价格竞争,提高企业的竞争力和经济效益都有重大的现实意义。本文以车间成本管理为研究课题,重点论述了离散性企业在制造资源计划(MRPⅡ)和制造执行系统(MES)环境下的车间成本管理方法。 相似文献