摘要：设计一种用于立式钻床,方便对孔系(三及三倍等分孔系)定位及钻削加工,且能根据孔系分布的圆周尺寸调整钻削位置的三轴钻工艺装备。在确定该工艺装备适用的机床参数的基础上,通过对比分析确定了其总体方案,对传动系统进行设计并校核了主要零件,同时利用SolidWorks软件辅助设计了工艺装备的箱体结构、连接结构及圆周钻孔零件,建立模型并进行模拟装配,验证了设计结构的合理性。设计结果表明,这种三轴钻工艺装备可在原立式钻床的基础上快速安装、调整和加工圆周孔系,可节约时间成本、降低工人劳动强度,提升钻削加工效率。

摘要：Expanding the optical absorption range of photocatalysts is still a key endeavor in graphitic carbon nitride(g-C_(3)N_(4))***,we report on a novel thiophene group extending the optical property,which is assigned to n-π^(*)electronic transitions involving the two lone pairs on sulfur(TLPS).The as-prepared samples,denoted as CN-ThAx(where x indicates the amount of ThA added,mg),showed an additional absorption above 500 nm as compared to pristine g-C_(3)N_(4).Further,the thiophene group enhanced charge carrier separation to suppress e‒/h+pair *** experimental results suggest that the thiophene group can obstruct the polymerization of melem to generate a large plane,thus exposing the lone electron pairs on the *** photocatalytic activity was evaluated in the decomposition of bisphenol A and H2 *** with g-C_(3)N_(4),the optimized CN-ThA_(30) sample led to a 6.6-and 2-fold enhancement of the degradation and H2 generation rates,*** CN-ThA_(30) sample allowed for synchronous H2 production and BPA decomposition.