Abstract:
A device for deburring the inside of a longitudinally seam-welded pipe includes a retention arm secured outside the pipe in the area of the pipe that is not yet closed and having an end zone which is located behind the welding spot. Arranged on the retention arm is a frame part which is tiltable in longitudinal direction of the pipe about a tilt axis and provided with a scraping tool. The tilt axis of the frame part is hereby located, as viewed in advancing direction, behind the scraping point at the end of the frame part. An adjustment mechanism is provided on the forward end of the frame part for adjusting the tilt angle.
Abstract:
A pipeline and tubular structure renovation apparatus facilitates rapid and economical removal of protrusions into the interior of pipelines and other tubular structures, particularly gas pipelines having excess weld or devices such as nipples, etc. The apparatus consists of a generally cylindrical carriage mounted on wheels or skids which substantially center the apparatus within a pipeline; a clamping device to clamp the carriage in position; and a centrifugal tool head which may perform grinding, cleaning, polishing and other operations. Grinding may be accomplished in both radial and plunge cutting modes. The apparatus is robust and of simple and economical construction. Weld removal speed is considerably faster than that achieved by conventional precision grinding tools.
Abstract:
A pipeline and tubular structure renovation apparatus facilitates rapid and economical removal of protrusions into the interior of pipelines and other tubular structures, particularly gas pipelines having excess weld or devices such as nipples, etc. The apparatus consists of a generally cylindrical carriage mounted on wheels or skids which substantially center the apparatus within a pipeline; a clamping device to clamp the carriage in position; and a centrifugal tool head which may perform grinding, cleaning, polishing and other operations. Grinding may be accomplished in both radial and plunge cutting modes. The apparatus is robust and of simple and economical construction Weld removal speed is considerably faster than that achieved by conventional precision grinding tools.
Abstract:
A scarfing tool for scarfing the inside of a tube-like member in which an elongated body is adapted for attachment to the end of an impeder rod. The body includes a cutting tool and a pair of spaced apart rollers aligned with the cutting tool. A thrust roller is pivotably mounted to the side of the body opposite from the cutting tool and rollers to force the cutting tool against the inner area of the tube member to be scarfed. A pair of first and second hydraulic means having associated pistons which are connected to a common source of hydraulic fluid. The first hydraulic piston is operably connected to said thrust roller for actuating said roller into extended contact with the inner tube member and the second piston is operably connected to a bias means to work against said means as the thrust roller is extended by the first hydraulic piston.
Abstract:
According to the present invention the radial feed mechanism comprises a hydraulic cylinder on the rod of which is rigidly fixed a holder connected with the housing of the radial feed mechanism by springs which ensure the cutting force of the cutting tool. At one end the springs bear against the housing of the radial feed mechanism while at the other end they bear against the holder rotated by a drive mounted on the tool head body and the shaft of said drive is rigidly connected with the housing of the radial feed mechanism. The housing of the radial feed mechanism carries a slide valve whose rod interacts with the profiled surface of a master form rigidly fixed on the tool head body. The holder is provided with rollers for tracing the internal surface of the welded pipe. The advantage of the device according to the present invention resides in that it ensures removal of flesh regardless of its temperature. Besides, the device allows the flash to be removed uniformly around the perimeter of the joint even in case the welded pipes are out-of-round. Further, the device allows to maintain practically constant cutting force during the flash-removing process.
Abstract:
This abstract describes a bead removal tool for removing the inner bead formed in joining plastic pipe. The tool comprises an axial cylindrical hub carrying a plurality of curved blades adapted to fit adjacent the inner surface of the pipe. The blades are rounded or tapered on their front ends and are sharpened to have a sharp cutting edge along the outer surface of the blades in contact with the wall. Each of the blades fits in contiguous fashion around the wall with each of the other blades. All blades are mounted by spring means from the hub, so that they are constantly pressed outwardly in contact with the inner surface of the pipe. Means are provided to move the hub forward, so that when a bead is reached it will be sheared off by the sharp edges of the plurality of blades.
Abstract:
An adjustable scarfing apparatus comprising an elongated body member supporting a cutting tool within a welded tube. In accordance with one embodiment, a plurality of slides are dispersed radially about the body and at least one of the slides is made continuously adjustable inwardly or outwardly from the body. In accordance with another embodiment, a cutting tool having a circular cutting edge which may be indexed is employed with the plane of the cutting edge. The plane of the cutting edge is inclined at an angle of from about 30* to about 60* to the longitudinal axis of the tube. Alternatively, the apparatus may include both of these embodiments.
Abstract:
Tool includes a frame having a substantially U-shape opening adjacent one edge for receiving the wall of a welded pipe having an inside burr therealong. The tool is adapted to be suspended in vertical position from an overhead support for movement toward and away from the interior of the end of a pipe and includes a reciprocating tool carriage mounted in its U-shape opening. The carriage is attached to and powered by a pressure fluid cylinder, mounted on the frame, for movement along a way in the U-shape opening. A cutter projects from the tool carriage and is adapted to remove the burr when the tool carriage is moved from a position adjacent the open end of the U-shape opening to a position inwardly of the open end of the opening. A pair of fluid cylinder actuated shoes is provided on the frame for engaging the outer contour of the pipe so as to clamp it between the pair of shoes and another pair of shoes which depend from the tool carriage and engage the inner contour of the pipe astride the burr. Thus the pipe is firmly held when the cutting tool is moved to cut away the end portion of the inside burr.
Abstract:
THE PRESENT INVENTION RELATES TO A TOOL OF THE TYPE USED WITH AN ARBOR FOR TRIMMING THE INSIDE BEAD FROM WELDED TUBING WHEREIN THE TOOL IS OF A HOLLOW TRUNCATED CONICAL SHAPE AND HAS A ROUNDED SURFACE EXTENDING FROM A CUTTING EDGE ON THE EXTERIOR BASE OF THE CONE TO THE HOLLOW INTERIOR THEREOF IN ORDER THAT SERVED WELD MAY BE GUIDED THROUGH THE HOLLOW INTERIOR OF THE TOOL.