Patent ID: 8938867
Filing Date: 2015-01-27
Classification: B23B,B23K,B23P,B23Q,F16H,Y10T

Abstract:
1. A portable boring-welding apparatus for boring and welding a workpiece, comprising: an external housing adapted to be removably secured to the workpiece in alignment with a bore thereof so as to enable a welding tool and a boring tool to access the bore, the external housing comprising a cylindrical channel for detachably receiving a welding shaft, to which the welding tool is attached, through the external housing; a feed motor secured inside the external housing, the feed motor being coupled to a feed shaft for rotating the feed shaft at a substantially low rotation speed suitable for welding the workpiece via the welding tool, the feed shaft having a longitudinal axis of rotation extending parallel to a longitudinal axis of the welding shaft and being operatively connected to the welding shaft for displacing the welding shaft axially along the longitudinal axis of the welding shaft through the circular housing opening upon rotation of the feed shaft about the longitudinal axis of rotation of the feed shaft; and a transmission device configured for transmitting rotational movement of the feed shaft to the welding shaft to rotate the welding shaft when the transmission device is actuated to a first position, and configured such that the transmission device does not transmit the rotational movement of the feed shaft to the welding shaft to rotate the welding shaft when the transmission device is actuated to a second position, and wherein the rotational movement of the feed shaft is configured to cause the axial displacement of the welding shaft along the longitudinal axis of the welding shaft when the transmission device is in the first position and when the transmission device is in the second position.