To provide a self-traveling beveling device which uniformly bevels even an elliptic pipe, and dispenses with centering work, by allowing the whole beveling machine to rotate around a pipe by frictional force of a plurality of rollers, with the plurality of rollers and a guide roller in an outer diameter in the pipe.
The self-traveling beveling device 10 is arranged so that a housing 20, a gear box 30, the plurality of rollers 21 and 22 and the guide roller 24 mutually sandwich the pipe P. Since these rollers 21 and 22 and the guide roller 24 are wholly placed with a specific angle, the self-traveling beveling device 10 rotates without dropping from the pipe P by the frictional force. The self-traveling beveling device 10 rotates in the pipe by the guide roller 24, and has the function of automatically rotating a bevel gear 26 by using rotation of the roller 21, so that beveling is uniformly and easily performed.
COPYRIGHT: (C)2008,JPO&INPIT
TOZAWA TETSUYA
MORI KENICHI