| 摘要 |
FIELD: machine engineering, namely apparatuses for mechanically working tubes by pressure, possibly winding water supply-, gas supply tubes and other tubes to coil with predetermined parameters. SUBSTANCE: apparatus includes upper roll and two lower rolls of three-roll bending mill; said are provided with cylindrical rollers rigidly secured to their end surfaces, namely with upper and two lower double grooved pass cylindrical rollers. Each lower cylindrical roller has dividing flange. Metallic tube is placed between upper cylindrical roller and two lower double grooved pass cylindrical rollers. EFFECT: possibility for winding metallic tubes to coil with predetermined parameters without deformation of their cross section. 2 dwg |
