GB1290740A - - Google Patents

Abstract

1290740 Welding by fusion V M ELAGIN V V PISARENKO and V V ANDREEV 23 April 1970 19585/70 Heading B3R A welding work-holder comprises a table 1 rotatably supported by a spindle 2 in a mounting 3 which can pivot about a transverse axis to enable the table to be tilted as desired, drive means for causing the mounting 3 to rotate, drive means for causing the table 1 to rotate, and a clamping device for clamping workpieces 12, 13 against the table 1, the clamping device including a part 22 movable towards or away from table 1 and having a thrust element 15 for bearing on one workpiece, the thrust element being rotatable about the table rotational axis. The mounting 3 is supported by lateral trunnions 4 on bearings 5. A worm-wheel sector 8 on one trunnion 4 engages a worm (9) (Fig. 1, not shown), driven from an electric motor (10). An electric motor (11) drives the table 1 through a gear train. The drives from both motors embody reduction gearing. Extending from the trunnion ends are rods 23 parallel to the table rotational axis. The part 22, in the form of a cross-beam, is movable along the rods and can be clamped in any desired position therealong. Clamps (29, 30) (Fig. 3, not shown), in the form of split screw-clamps are provided for this purpose. Cross-beam 22 includes a pneumatic piston- and-cylinder arrangement 21, 25, the piston of which mounts a housing 19 for a rotary shaft 16 coaxial with the table rotational axis. Thrust element 15 is secured to the shaft. The workpieces are secured between the thrust element 15 and a member 14 secured to the table, A welding torch can be mounted on a rod 23 adjacent the intended joint area.