SU1609528A1

SU1609528A1 - Method of producing roll-formed sections

Info

Publication number: SU1609528A1
Application number: SU894637887A
Authority: SU
Inventors: Марк Ефимович Докторов; Сергей Владимирович Мирошниченко; Евгений Николаевич Горбач; Сергей Алексеевич Батурин
Original assignee: Украинский научно-исследовательский институт металлов
Priority date: 1989-01-17
Filing date: 1989-01-17
Publication date: 1990-11-30

Abstract

Изобретение относитс к обработке металлов давлением и предназначено дл изготовлени неравнополочных гнутых профилей в валках профилегибочного стана. Целью изобретени вл етс повышение качества неравнополочных гнутых профилей с выпуклой двухэлементной стенкой путем уменьшени их продольного скручивани и повышени точности геометрических размеров. Первоначально производ т подгибку полок 1 и 2 с перегибом на угол 3-5° вначале меньшей полки профил , а затем одновременно с подгибкой элемента стенки, прилегающего к меньшей полке, производ т перегиб большей полки на упом нутый угол с последующей отгибкой полок при подгибке элементов стенки. Подгибку элементов стенки друг относительно друга продолжают до угла, на 3-5° превышающего конечный, отгиба затем элементы стенки до конечного угла с расположением при этом полок в вертикальном положении. При подгибке элементов стенки на угол 3-5°, превышающий конечный, профиль располагают в калибре таким образом, что его кромки удалены от своего конечного положени в сторону от оси формовки на равные рассто ни по горизонтали. 1 з.п. ф-лы, 1 ил., 2 табл.The invention relates to the processing of metals by pressure and is intended for the manufacture of unequal-curved curved profiles in rolls of a roll-forming mill. The aim of the invention is to improve the quality of unequal bent profiles with a convex two-element wall by reducing their longitudinal twisting and increasing the accuracy of the geometric dimensions. Initially, bendings of the shelves 1 and 2 are carried out with bending at an angle of 3-5 ° at the beginning of the smaller profile shelf, and then simultaneously with the bending of the wall element adjacent to the smaller shelf, the greater shelf is bent at the aforementioned angle followed by bending the shelves walls. The bending of the wall elements relative to each other continues to an angle of 3-5 ° higher than the final, then the limb is then wall elements to the final angle with the location of the shelves in a vertical position. When the wall elements are folded at an angle of 3-5 ° above the final profile, they are placed in the gauge so that its edges are removed from their final position away from the forming axis to equal horizontal distances. 1 hp f-ly, 1 ill., 2 tab.

Description

Таблица 1Table 1

Таблица 2table 2

Claims

Claim

1. A method of manufacturing bent profiles with vertical shelves and a convex two-element wall by sequentially bending the formed elements and bending the shelves by an angle of 3-5 ° relative to adjacent wall elements, followed by folding them when bending the wall elements, characterized in that, in order to improve the quality of unequal profiles by reducing their longitudinal twisting and increasing the accuracy of geometric dimensions, initially bend the smaller profile section to the mentioned angle, and then simultaneously with the bend to th wall member adjacent to the lower shelf, produce more inflection shelves and hem the wall elements relative to one another is continued until the angle in

3-5 ° above the final one, then bending back then the wall elements to the final angle with the arrangement of the shelves in a vertical position.

2. The method according to p. 1, characterized in that when bending the wall elements relative to each other to an angle 3-5 ° higher than the final one, the profile is positioned in the caliber so that its edges are equal from the final position towards the molding axis by equal distance in the horizontal direction.

Table 1

Couple- Angle meter I II III IV. V VI VII VIII IX X a 0 16 38 38 38 38 38 34 34 34 β 0 6 16 33 46 59 71 68 68 68 at 0 0 0 fifteen 22 32 40 fifty . 59 56 Θ 0 0 0 0 0 0 0 fifteen 24 22 Δα - 4 4 4 4 4 - - Δβ - - - - - - 3 - - - Δγ - - - - - - - - 3 - Δθ - - - - - - - - 2 -

table 2

The value of the angle of inflection of the elements of shelves and wall elements, degrees. Shelf spring angle Spring angle of wall elements Note 1 3 ° 3 ° 30 ' Geometrical sizes pro 2 2 ° 2 ° 30 ' filets match the given 3 0 ° 50 ' .1 ° 4 0 ° 30 ' 0 ° 50 ' 5 0 ° 25 ' 0 ° 45 ' 6 0 ° 20 ' 0 ° 30 ' For bending elements prof 7 0 ° 20 ' 0 ° 30 ' lei need additional 8 0 ° 20 ' 0 ° 30 ' transitions, during bending, wrinkling of edges and scoring on the metal surface is observed.