| 摘要 |
FIELD: mechanical engineering. ^ SUBSTANCE: threading die comprises changeable rack-type gears mounted inside the housing and locked by means of bushing with screws. The die is provided with plastically deformable rack-type gears arranged over the screw line. The threading profile of the detachable rack-type gears has acute angle. The detachable combs are mounted in front of the plastically deformable rack-type gears. ^ EFFECT: enhanced reliability. ^ 2 dwg |
