| 摘要 |
PURPOSE: To quicken manufacture by adjusting the length, making an opening of a predetermined shape through the side wall, shaping the side wall to have a given surface structure, coupling two pieces into a subassembly and then joining the subassembly into a spacer assembling jig. CONSTITUTION: A specific lot of seamless pipe 60 made of a metallic material having small neutron absorbing cross-section are arranged side by side at a cutting station 62 where a ferrule of accurate length is cut off from the pipe 60 and inspected. A ferrule 32 having required length is then transferred to an opening cutting station 70 thence to an inner surface polishing station 74. After leaving the station 74, the ferrule 32 is provided with four protrusions on the side wall thereof at a forming station 78. After passing through a projection height inspecting station 82, the ferrule is stored in a basket 86 and then passed through a cleaning station 88. Subsequently, the ferrule is subjected to quality insurance test at station 90 and each basket receiving a ferrule is transferred to an assembling station 96. |
