FIELD: mechanical engineering. SUBSTANCE: device has a support for a mandrel received in the chuck of a turner, the rear center being fixed, and working rollers. The rollers are mounted on the lateral support for permitting adjusting rotation about the vertical axis and reciprocation along the lateral support. The rollers can reciprocate in the direction of feeding with the use of the longitudinal support. The rollers are composed and consist of lip, strengthening, and output portions. The relationship between the height of the lip portion of the roller and the width of the gear wheel, the magnitude of the lip angle as well as the shape and height of the strengthening portion of the roller are defined by relationships presented in the invention description. EFFECT: enhanced efficiency. 2 cl, 3 dwg
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