文档介绍：,同时尾部的所有振动工作应停止。Centerlineconfirmedandapprovedbyownerandinspector,。,确认后方可塞镗排进行镗孔。Checkthesizeofsterntubecasting,ensurethesizeassameasthesizeofshaftarrangementdrawing,afterbeingconfirmed,taketheboringspindleintosterntube对镗排应进行严格的检查休整,确保镗孔所需各种工具到位。。(见图①)Fixspecialboringspindleslowlyintosterntubebytackleandhandgourdandsupportbyspecialbearingwherenecessary(Seefig.①).在镗排的两端近尾轴孔的两端面固定两根划针,(见图①所示)慢慢转动镗杆根据尾轴孔两端的检验圆进行校核镗杆,直至镗杆与尾管两端的检验圆同心,将镗孔上各调整轴承固定并将传动装置安装到位,这样可以开始进行尾轴孔的切削。Fixtwoneedleatboringspindlebothendsnearsterntubebothends(showedinfig.①),ordingtosterntubebothendscheckcircleuntilboringspindleisconcentricwithcheckcircleatsterntubebothends,fixadjustmentbearingonboringholeandinstallpowerunit,,见图②,镗孔须分粗镗、半精镗、精镗三阶级,每阶段加工后须要据检验圆校核镗杆位置有无移动,经检验无误或经调整后方可进行下阶段,具体各阶段的加工切削用量如下表。Accordingtodrawingrequirementseeingsterntubegeneraldrawing,seefig.②,boringmustbedividedintothreestagesofheavyboring、halffinallyboringandfinallyboring,mustcheckwhetherboringspindlepositionismovedascheckcircleafterroughmachining,finallyboringcanbecarryoutafterhavingcheckedrightoradjusted,ac