| abstract |
Automatic welding device, comprises: (a) a holder rotating round an axis and carrying the workpiece; (b) a rotary holder for a welding burner; (c) a movable mounting for at least one of (a) and (b) so that their relative positions may be adjusted in three dimensions; (d) control devices for rotating and controlling the positions of (a,b). Unit (b) can pref. move in three mutually-perpendicular directions and rotate on a vertical axis while holder (a) rotates on a horizontal axis. The control circuits pref. include punched tape; reader, writer and playback; shift-register, digital-analogue converter; servo-amplifier, code- and decode matrices. Used for welding along a complex path and using point-to-point numerical control techniques. |