| 摘要 |
1,196,316. Planing; rotary tool head; welding by pressure; making wire; rolling. TEXAS INSTRUMENTS Inc. 31 Aug., 1967 [4 Jan., 1967], No. 39913/67. Headings B3A, B3L, B3M, B3R and B3T. Apparatus for drawing a wire 13 through a lubricated die 9, removing a contaminated surface of the wire and then cladding it with strip material 57, e.g. cladding copper strips on aluminium wire, by rolls 63 which squeeze and solid-phase bond the wire and strip together, comprises a rotating hollow cutter 15, 27 and a fixed shaving die 49 for removing the said surface of the wire. The rotating cutter is formed by a pulley 19 driven sleeve 15 mounted on bearings 17, 25 and including cutters 27 radially adjustable by differential threading of screws 45, and the shaving die 49 includes a carbide or tool steel liner 51. The rotating cutter is adjustable axially so that the cutter and die 49 are closely adjacent, e.g. a .002 in gap between the relative cutting planes, so that a cutting action and chip breaking occur. The radial adjustment of the cutters 27 are set so that either (a) the cutters 27 just graze the surface of the wire and all material is removed by the die 49, the cutters 27 breaking up the chips therefrom, or (b) the cutters 27 remove all the material and the die 49 just grazes the finished size of the wire and breaks up the chips formed by the cutters 27, or (c) both the cutters 27 and the die 49 remove material in successive stages. The strips 57 are fed to the rolls 63 via retorts 59 and passageways 60 and are held on to the grooved edge of the rolls 63 by spring loaded pads 61. The space in the retorts 59, passageways 60 and nip area 62 is supplied with a reducing gas, e.g. hydrogen, or an inert gas, e.g. argon, the cutting edge of the die 49 acting as a seal and seals 65 being arranged on the end faces of the rolls 63. The rolls squeeze and reduce the size of the clad wire and a rib 58 may be formed which is subsequently removed. |
