Patent ID: 6295707
Filing Date: 2001-10-02
Classification: B23K,Y10T

Abstract:
A portable boring and welding machine comprising:a support structure adapted for operatively supporting an associated shaft for rotation and reciprocal axial movement relative to said support structure, said associated shaft holding one of an associated cutting tool and an associated torch;a drive system for simultaneously rotating and axially reciprocating said associated shaft relative to said support structure, said drive system limited to two separate independent drive motors including: (i) a first, direct-current electrical drive motor connected to said support structure and adapted for operative coupling to said associated shaft to rotate said associated shaft relative to said support structure; and, (ii) a second electric motor connected to said support structure and adapted for operative coupling to said associated shaft to axially reciprocate said associated shaft while said first drive motor rotates said associated shaft; anda joint used for axial movement of the associated shaft, said joint comprising a pair of jaws adapted for placement about an outer sleeve of the associated shaft, said jaws supported by a first bushing mounted on a tubular bar, the exterior of said bar being threaded and engaging with a second bushing, said second bushing having a threaded interior and supported by said support structure, said second bushing kinematically connected to the second electric motor whereby rotation of the bushing corresponds with axial translation of the threaded bar and the first bushing.