Bevelling apparatus for pipe re-facing machine

摘要

In an improvement to a pipe re-facing machine having a rotatable flange plate and a coaxially-mounted collar rotatable with and longitudinally movable relative to the flange plate, a support bracket projects from the flange plate, and a support block is retainingly mounted to and movable relative to the support bracket in an angled radial direction. The support block is adapted to receive a tool holder carrying a cutting element. An actuating mechanism is engageable with the support block such that longitudinal movement of the collar will move the support block relative to the support bracket. The actuating mechanism can thus move the cutting element in an angled direction relative to the axis of a tubular workpiece, thereby enabling machining of a bevelled edge on an annular shoulder of a tubular workpiece non-rotatably mounted to the re-facing machine by longitudinally moving the collar while rotating the flange plate.

主权项

1. A bevelling apparatus, for use in association with a pipe-refacing machine of the type having:
(a) a tubular shaft rotatable about a rotational axis; (b) a flange plate mounted to one end of the tubular shaft and rotatable therewith, said flange plate having an outer face perpendicular to the rotational axis and having an opening through which the rotational axis passes; (c) a stationary and non-rotatable adapter disposed at least partially within the tubular shaft proximal to the opening in the flange plate, for receiving a threaded end of a tubular workpiece such that the longitudinal axis of the workpiece is coincident with the rotational axis; and (d) a tubular collar coaxially disposed around the tubular shaft so as to be rotatable therewith and movable relative thereto in a direction parallel to the rotational axis;wherein said bevelling apparatus comprises:
(e) a support bracket mountable to the flange plate of a re-facing machine so as to project from the outer face of said flange plate; (f) a support block adapted to receive a tool holder, said support block being retainingly mounted to the support bracket so as to be movable relative to the support bracket in an angled radial direction forming an acute angle relative to a radially-outermost portion of the flange plate, with said acute angle corresponding to the bevel angle of a bevelled edge to be machined or re-faced on an annular shoulder of a tubular workpiece mounted to the adapter of the re-facing machine; and (g) actuating means for effecting angled radial movement of the support block relative to the support bracket.