TWO-STAND UNIT OF THREE-ROLLER STANDS Russian patent published in 2000 - IPC

FIELD: plastic metal working, namely apparatuses for drawing. SUBSTANCE: two-stand unit of three-roller stand includes base with struts. Roller holders with non-driven rollers, mechanisms for individual and groupwise radial adjustment of rollers are secured to struts and inclined one relative to another by mutual angle 120 degrees. Articulation joint assembly of roller holder may move in direction normal relative to strut of stand by means of threaded sleeve. Roller holder is mounted with possibility of additional motion along axis of said articulation joint. Mechanism for radial groupwise adjustment of rollers is in the form of guide screw and nut engaging with screw. Housing with three jointly secured metallic shackles is mounted on nut by running fit. Each shackle is jointly connected with roller holder. Roller bearing assembly is mounted on sleeve in two-stand unit of three-roller stand. Struts of stand are mutually joined by means of four braces. Lower braces are secured to base of two-stand unit. EFFECT: reduced size and mass of two-stand unit of three-roller stands, enhanced accuracy of rolled sections due to axial adjustment of rollers and taking up of axial plays in roller assembly. 3 cl, 7 dwg