前门外拉手支架注射模结构设计与制造

通过对前门外拉手支架的形体分析得知,支架上存在着■5 mm×23°和■7.2 mm×3°的2个斜向型孔要素,还存在着13.8 mm×23°斜向型槽要素。2个斜向型孔中心线距离仅为22.6 mm,因此两抽芯机构尺寸需要设计得非常紧凑。为了避让2个斜向型孔抽芯发生的运动干涉,注射模的13.8 mm×23°斜向型槽与■5 mm×23°斜向型孔抽芯机构采用了斜导柱滑块抽芯机构,斜导柱与斜滑块等宽。■7.2 mm×3°斜向型孔则采用了油缸长距离抽芯机构,并且与斜导柱滑块抽芯机构保持一定距离,能够保证两者可以同时或各自进行抽芯运动而不会产生运动干涉。经过生产实践证明,该注射模能顺利且高质量、高效率进行前门外拉手支架的成型加工。

Reply to “Comment on ‘A numerical investigation of the acoustic mode waves in a deviated borehole penetrating a transversely isotropic formation' ”

We appreciate the comment from Horne,Miller and Wang on the paper‘A numerical investigation of the acoustic mode waves in a deviated borehole penetrating a transversely isotropic formation’by Liu et al.（2015）[1],for the opportunity to consider and clarify the group and phase velocity issue in sonic logging with a deviated borehole penetrating a VTI formation.We re-read the paper by Liu et al.[1]and did some numerical tests and analyses.