Device for removing internal circular flash

Details Device for removing internal circular flash Device for removing internal circular flash

B - Operations, Transporting

23

D

29/1, 138/70

B23D 1/24 (2006.01)

Patent

CA 1069286

ABSTRACT OF THE DISCLOSURE The invention relates to a device for avoiding inter- nal circular flash during resistance butt-welding of pipes. The device includes a tool head with a body, which head carries a holder with a cutting tool. An appliance brings the tool head to the flash-removing zone, and the appliance is provided with a cantilevered rod whose free end is connected to the tool head. A radial feed mechanism of the holder is accommodated in a hous- ing of its own and includes a drive for rotating the mechanism. The radial feed mechanism of the holder is made in the form of a hydraulic cylinder whose rod carries a rigidly secured holder connected with the housing of the radial feed mechanism by springs which ensure the cutting force of the cutting tool and bear against the housing of the radial feed mechanism of the hol- der at one end while at the other end they bear against the hol- der rotated by a drive installed on the tool head body. The shaft of the drive is connected rigidly with the housing of the radial feed mechanism which carries a slide valve whose rod in- teracts with the profiled surface of a master form, and the hol- der is provided with rollers for tracing the internal surface of the welded pipes.

272800

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