| 摘要 |
1275285 Lathes; mandrels POLYTYPE AG 23 May 1969 [24 May 1968] 26408/69 Headings B3B and B3T In an automatic lathe for machining tubular members means for supporting a plurality of the tubular members 2 comprises a plurality of rotary arbors 1, each of which is located concentrically with clearance with a respective ring member 10 carried by an indexable turret plate 5, the arbor having a plurality of angularly spaced circumferential slots 3 in which are located rollers 4 which extend parallel to the axis of the arbor. In use, the tubular members are located over their respective arbors and are each clamped thereon by the wedging action of the rollers, due to rotation of the arbor, which act on the inner periphery of the member. The ring member prevents deformation of the members during clamping. Each arbor has an axial bore 13 and an outlet 15 for the passage of compressed air which ejects the finished member from the arbor. |
