SU829261A1

SU829261A1 - Die for bending works having holes on bend flanges

Info

Publication number: SU829261A1
Application number: SU792800459A
Authority: SU
Inventors: Леонид Лаврентьевич Прохоров
Original assignee: Предприятие П/Я А-1319
Priority date: 1979-07-23
Filing date: 1979-07-23
Publication date: 1981-05-15

Description

Изобретение относится к обработке металлов давлением и может быть использовано в гибочных штампах, в штампах последовательного действия, а также в штампах, устанавливаемых на револьверном столе пресса.The invention relates to the processing of metals by pressure and can be used in bending dies, in dies of sequential action, as well as in dies mounted on a revolving table of the press.

Известны гибочные штампы с фиксацией заготовки по наружному контуру. И].Known bending dies with the fixation of the workpiece on the outer contour. AND].

Однако такая фиксация заготовки не всегда.целесообразна по техническим причинам (удобство установки, точность фиксации и т.д.).However, such fixation of the workpiece is not always advisable for technical reasons (ease of installation, accuracy of fixation, etc.).

Известны также гибочные штампы с фиксацией заготовки на ловителях. Штампы такого типа для гибки заготовок с отверстиями на отгибаемых полках содержат пуансон, закрепленный в верхней части штампа,'и смонтированные в нижней части матрицу и выталкиватель с установленными· на нем ловителями. Ловители закреплены в поворотных полуматрицах, шарнирно связанных с выталкивателем. Такие штампы обеспечивают точную фиксацию заготовки по отверстиям в процессе гибки [2].Bending dies with fixing the workpiece to catchers are also known. Stamps of this type for bending workpieces with openings on foldable shelves contain a punch fixed in the upper part of the stamp, and a die and an ejector mounted on the lower part with mounted catchers. Catchers are fixed in rotary semi-matrices pivotally connected to the ejector. Such dies provide accurate fixation of the workpiece through the holes during bending [2].

Одйгако они имеют сложную конструкцию. 30Odygako they have a complex structure. thirty

Цель изобретения - упрощение конструкции штампа.The purpose of the invention is to simplify the design of the stamp.

Поставленная цель достигается тем, что матрица выполнена жесткой с направляющими отверстиями под ловители, ловители жестко закреплены на выталкивателе, а пуансон выполнен с выступами, расположенными в плоскости, перпендикулярной плоскости гибки, и взаимодействующими с рабочим торцом' выталкивателя, причем высота выступов равна высоте рабочей части ловителей с учетом толщины заготовки.The goal is achieved in that the matrix is rigid with guide holes for the catchers, the catchers are rigidly mounted on the ejector, and the punch is made with protrusions located in a plane perpendicular to the bending plane, and interacting with the working end of the ejector, and the height of the protrusions is equal to the height of the working part catchers taking into account the thickness of the workpiece.

На фиг. 1 схематически изображен 15 предлагаемый штамп; на фиг. 2 - разрез А-А на фиг. 1,In FIG. 1 schematically shows the 15 proposed stamp; in FIG. 2 is a section AA in FIG. 1,

Штамп содержит смонтированные в его нижней части гибочную матрицу 1 и выталкиватель 2 с закрепленными 20 на нем ловителями 3. Ловители 3 расположены в направляющих отверстиях матрицы 1. Выталкиватель 2 снабжен пружиной 4. В верхней части штампа установлены пуансон 5 и съемник 6.The stamp contains a bending matrix 1 mounted in its lower part and an ejector 2 with catchers 20 fixed on it 3. The catchers 3 are located in the guide holes of the matrix 1. The ejector 2 is equipped with a spring 4. A punch 5 and a puller 6 are installed in the upper part of the stamp.

Пуансон 5 выполнен с выступами 7, расположенными в плоскости, перпендикулярной плоскости гибки и взаимодействующими с рабочим торцом 8 выталкивателя 2. Высота h выступов 7 пуансона 5 равна сумме высоты а ра4 бочей части ловителей 3 и толщины t заготовки 9.The punch 5 is made with protrusions 7 located in a plane perpendicular to the bending plane and interacting with the working end 8 of the ejector 2. The height h of the protrusions 7 of the punch 5 is the sum of the height a4 of the working part of the catchers 3 and the thickness t of the workpiece 9.

Штамп работает следующим образом.The stamp works as follows.

Заготовка 9 при помощи приспособления (не показано) или вручную подается в зону штампа с установкой на ловителях 3. При ходе пуансона 5 в нижнее положение выступы 7 пуансона 5 нажимают на выталкиватель 2 и опускают его ,'а вместе с ним ловители 3.The workpiece 9 with the help of a device (not shown) or manually is fed into the stamp zone with installation on the catchers 3. When the punch 5 is in the lower position, the protrusions 7 of the punch 5 press the ejector 2 and lower it, 'and with it the catchers 3.

При опускании выталкивателя 2 с ₍ ловителями 3 на величину h происходит, снятие заготовки с ловителей 3 и одновременное прижатие ее к матрице 1 пуансоном 5. При дальнейшем ходе пуансона 5 вниз осуществляется свободная гибка заготовки 9.When lowering the ejector 2 with ₍ catchers 3 by the value of h, the workpiece is removed from the catchers 3 and at the same time it is pressed against the matrix 1 by the punch 5. With the further punch 5 moving downward, the billet 9 is freely bent.

При подъеме пуансона 5 в верхнее положение согнутая деталь выталкивается из матрицы 1 выталкивателем 2, а с пуансона 5 снимается при помощи съёмника 6 и удаляется из зоны штампа 20 «труей сжатого воздуха.When the punch 5 is raised to its upper position, the bent part is pushed out of the matrix 1 by the pusher 2, and from the punch 5 it is removed with the help of a puller 6 and removed from the stamp zone 20 by a compressed air pipe.

Claims

The invention relates to the processing of metals by pressure and can be used in bending dies, in successive dies, as well as in stumps mounted on a revolver table. Known bending dies with fixing the workpiece on the outer contour. 1. However, such fixation of the workpiece is not always. It is advisable for technical reasons (ease of installation, fixing accuracy, etc.). Bending stamps with fixing of the workpiece on catchers are also known. Stamps of this type for bending workpieces with openings on the bent-off fields contain a punch fixed: at the top of the punch, and the die mounted at the bottom and the ejector with catchers mounted on it. The catchers are fixed in swiveling semi-matrix pivotally connected with an extractor. Such shtilpy provide accurate fixation, blanks along the holes in the process of bending {2j.; However, they have a clear construction. The purpose of the invention is to simplify the stamp design. The goal is achieved by the fact that the matrix is made rigid with guide holes for catchers, catchers are rigidly fixed on the ejector, and the punch is made with protrusions located in a plane perpendicular to the plane of bending and interacting with the working end of the ejector, and the height of the projections is equal to the height working part of catchers taking into account the thickness of the workpiece. FIG. 1 shows schematically the proposed stamp; in fig. 2 shows section A-A in FIG. 1, the stamp comprises a bending die 1 and an ejector 2 mounted on its lower part with catchers 3. The catchers 3 are located in the guide holes of the die 1. The ejector 2 is fitted with a spring 4. In the upper part of the die there is a punch 5 and a puller b . The punch 5 is made with protrusions 7 located in a plane perpendicular to the plane flexible and interacting with the working end 8 of the ejector 2. The height h of the projections 7 of the punch 5 is equal to the sum of the height of the working part of catchers 3 and the thickness t of the workpiece 9. The stamp works as follows. The workpiece 9 using a tool (not shown) or manually fed into the stamp area with installation on catchers 3. When the punch 5 is in the lower position. The protrusions 7 of the punch | ia 5 press the ejector 2 and lower it / and the catchers 3 When the ejector 2 is lowered with catchers 3 by the value of h, the workpiece is removed from the catchers 3 and simultaneously pressed against the matrix i by the punch 5. With the further movement of the punch 5 downwards, the flexible bending of the workpiece 9 is lowered. When the punch 5 is raised to the upper position, it is bent the part is pushed out 1 matrix of ejector 2 and 5 is removed from the punch by a removable ka used and is removed from zone stamp compressed air. Claims of the Invention Stamp for bending workpieces with holes on fold-over shelves, containing a punch fixed in the upper part of the punch and mounted in the lower part of the die and ejector with catchers installed on it, characterized in that, in order to simplify the design, the die is made rigid with guiding holes for catchers, catchers are rigidly fixed on the ejector, and the punch is made with protrusions located in a plane perpendicular to the plane of bending and interacting with the working end face ivatel, wherein the height of the projections is equal to the height of the working part catchers given workpiece thickness. Sources of information taken into account in the examination. 1. Meshcherin V.P. Sheet stamping. Atlas of schemes. M., 1975, p. 93, fig. 218.

2. Smirnov - Al. G.A., Weintraub D.A. Cold stamping in instrument making. MgL., 1963, p. 327-328, FIG. 1806 (prototype).

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