RU2008147636A

RU2008147636A - METHOD OF COLD COMBINED DETAILS OF PARTS

Info

Publication number: RU2008147636A
Application number: RU2008147636/02A
Authority: RU
Inventors: Иван Антонович Кисиленко (RU); Иван Антонович Кисиленко; Виктор Михайлович Попов (RU); Виктор Михайлович Попов
Original assignee: Закрытое Акционерное Общество "Полад" (Ru); Закрытое Акционерное Общество "Полад"
Priority date: 2008-12-02
Filing date: 2008-12-02
Publication date: 2010-06-10
Also published as: RU2409444C2

Abstract

1. Способ холодной комбинированной вырубки, включающий вырубку с обжимкой детали в штампе, имеющем матрицу с закругленными режущими кромками, отличающийся тем, что в самом начале, на поверхности матрицы, вырубку детали ведут, например от 0,5 до 1, с зазора традиционной вырубки плюс зазор для чистовой вырубки для данной толщины и марки материала, затем полость матрицы плавно уменьшается по радиусу по мере закругления или завала кромок, до зазора чистовой вырубки, таким образом вырубаемая деталь на входе в матрицу вдавливается в уменьшающуюся по радиусу полость матрицы, в результате чего создается в очаге деформации схема неравномерного всестороннего сжатия для каждой конкретной толщины и марки материала, обеспечивающее качественный срез, при этом размеры завала или радиуса закругления режущей кромки определяют по таблицам для различных толщин и марок материала, представленных в учебниках и справочниках по холодной листовой штамповке. ! 2. Способ холодной комбинированной вырубки по п.1, отличающийся тем, что следующий сразу за радиусом закругления кромки пуансон пригоняют к матрице с минимальным зазором 0,001 или 0,002 мм независимо от толщины материала вырубаемой детали. ! 3. Способ холодной комбинированной вырубки по пп.1 и 2, отличающийся тем, что при вырубке и пробивке, в полость пуансон матрицы, отхода из детали, штамповку ведут пуансоном с закругленными режущими кромками в полость пуансон-матрицы с режущими кромками, при чем радиус закругления режущей кромки пуансона выбирают по способу изложенному в п.1. 1. A method of cold combined cutting, including cutting with crimping the part in a stamp having a matrix with rounded cutting edges, characterized in that at the very beginning, on the surface of the matrix, the parts are cut, for example, from 0.5 to 1, from the gap of traditional cutting plus a clearance for finishing cutting for a given thickness and grade of material, then the cavity of the matrix smoothly decreases along the radius as it rounds or obstructs the edges to the clearance of final cutting, so the cut part at the entrance to the matrix is pressed into a decreasing about the radius of the cavity of the matrix, as a result of which a non-uniform all-round compression scheme is created in the deformation zone for each specific thickness and grade of material, providing a high-quality cut, while the dimensions of the obstruction or radius of curvature of the cutting edge are determined from the tables for the various thicknesses and grades of material presented in the textbooks and cold stamping guides. ! 2. The cold combined felling method according to claim 1, characterized in that the punch is fitted immediately to the die following the radius of curvature of the edge to the die with a minimum clearance of 0.001 or 0.002 mm, regardless of the thickness of the material to be cut. ! 3. The method of cold combined cutting according to claims 1 and 2, characterized in that during cutting and punching, into the cavity is the die punch, leaving the part, stamping is carried out by a punch with rounded cutting edges into the cavity of the die die with cutting edges, the radius the rounding of the cutting edge of the punch is selected according to the method described in claim 1.

Claims

1. A method of cold combined cutting, including cutting with crimping the part in a stamp having a matrix with rounded cutting edges, characterized in that at the very beginning, on the surface of the matrix, the parts are cut, for example, from 0.5 to 1, from the gap of traditional cutting plus a clearance for finishing cutting for a given thickness and grade of material, then the cavity of the matrix smoothly decreases along the radius as it rounds or obstructs the edges to the clearance of final cutting, so the cut part at the entrance to the matrix is pressed into a decreasing about the radius of the cavity of the matrix, as a result of which a non-uniform all-round compression scheme is created in the deformation zone for each specific thickness and grade of material, providing a high-quality cut, while the dimensions of the obstruction or radius of curvature of the cutting edge are determined from the tables for the various thicknesses and grades of material presented in the textbooks and cold stamping guides.

2. The cold combined felling method according to claim 1, characterized in that the punch is fitted immediately to the die following the radius of curvature of the edge to the die with a minimum clearance of 0.001 or 0.002 mm, regardless of the thickness of the material to be cut.

3. The method of cold combined cutting according to claims 1 and 2, characterized in that during cutting and punching, into the cavity is the die punch, leaving the part, stamping is carried out by a punch with rounded cutting edges into the cavity of the die die with cutting edges, the radius the rounding of the cutting edge of the punch is selected according to the method described in claim 1.