SU624684A1

SU624684A1 - Die set for straightening annular work

Info

Publication number: SU624684A1
Application number: SU772472468A
Authority: SU
Inventors: Николай Иванович Бурнаев; Григорий Ефимович Скороход; Анатолий Александрович Поляков; Владимир Григорьевич Кондратенко
Original assignee: Предприятие П/Я Р-6205
Priority date: 1977-04-11
Filing date: 1977-04-11
Publication date: 1978-09-25

Description

Изобретение относитс к обработке металлов давлением, а имешю к устройствам дл правки.The invention relates to the processing of metals by pressure, and to devices for dressing.

Известен штамп дл правки кольцевых заготовок раст жением, содержаи1ий подвижную верхнюю и неподвижную нижнюю плиты, а также смонтированный в верхней плите пуансон с коническим заходным участком 1.A known stamp for straightening ring blanks by stretching, containing a movable upper and fixed lower plates, as well as a punch mounted in the upper plate with a conical inlet region 1.

Целью изобретени вл етс расширение технологических возможностей штампа, путем обеспечени правки заготовок повышенной овалности .The aim of the invention is the expansion of the technological capabilities of the stamp, by ensuring the editing of the billet of increased ovalness.

Это достигаетс тем, что штамп снабжен расположенными на нижней плите подпружиненными секци ми, установленными с возможностью радиального перемещени , а также закрепленным на них и установленным с возможностью перемещени в плоскости, перпендикул рной плоскости перемещени секций, прижимом-сьемшжом , вьшолненным в виде секций, при этом жесткость пружин диаметрально противоположно расположенных секций одинакова, а жесткость одной пары больше жесткости другой .This is achieved in that the stamp is provided with spring-loaded sections located on the bottom plate, installed with the possibility of radial movement, as well as fixed on them and installed with the possibility of movement in the plane, perpendicular to the plane of movement of the sections, clamped in sections, with This stiffness of the springs diametrically opposed sections are the same, and the stiffness of one pair is greater than the stiffness of the other.

На фиг. 1 изображен штамп, общий вид; на фиг. 2 - то же, план.FIG. 1 shows a stamp, a general view; in fig. 2 - the same plan.

Штамп содержит нижнюю плиту 1, на которой установлены подвижные опорные секции 2-5. Кроме того, на нижней плите 1 закреплены направл ющие 6 дл опорных секций и плаки 7. Опорные секции 2 и 3 подпружинены в радиальном направлешш пружинами 8, а опорньЕ секции 4 и 5 подпру данены пружинами 9. Все опорные секции выполн ют роль опоры дл раст гиваемого кольца и взаимодействуют боковыми поверхност ми.The stamp contains the bottom plate 1, on which the movable support sections 2-5 are mounted. In addition, on the bottom plate 1, guides 6 for support sections and plates 7 are fixed. Support sections 2 and 3 are spring-loaded in the radial direction by springs 8, and support sections 4 and 5 are spring-loaded by springs 9. All support sections act as supports for races ring and interact with side surfaces.

Усилие пружии 8 больше усили пружии9 На каждой из опорных секций закреплены секции 10 прижима-съемника, подпружиненные в вертикальном направлении пружинами 11. На опорной секщш 5 закреплен упор 12 дл заготовки 13. К верхней плите 14 при помощи пуаисоиодержател 15 прикреплен пуансои 16.The force of the spring 8 is greater than the force of the spring 9 On each of the support sections, the clamp-remover sections 10 are secured, spring-loaded in the vertical direction by springs 11. A support 12 for the workpiece 13 is fixed on the support sec- tion 5 to the upper plate 14 by means of a holder 15.

Штамп работает следующим образом.The stamp works as follows.

Claims

The elliptical billet 13 is placed in the supporting sections 2-5 and fixed by the abutment 12. When the press ram moves downward, the plunger 16 stretches the elliptical ring 13 in its radial direction with its run-in conical part. At the same time, the punch 16 acts with a conical part on the pressing device sections 10 fixed to the supporting sections 2 and 3, lowering them down and spreading them to the sides, while the ribs 8 are compressed. At the same time, under the action of the springs 9, the secant sections 4 and 5 converge, interacting with side surfaces with diverging support sections 2 and 3. In the case of the press slide, the punch holder 15 abuts the pressing-down section 10, which compresses the springs II and undercut workpiece 13. When the press ram goes up, the expanded ring abuts against the pressing-puller section 10 and is removed from the die 16, and the springs 11 return the pressing-puller sections 10 to their original position. The supporting sections 2 and 3 under the action of the springs 8, the force of which is greater than the forces of the springs 9, move towards the center and dissolve the supporting sections 4 and 5, while the springs 9 and MJ. The finished part is then; 1L is removed from the die, for example, with compressed air, after which CSPL is repeated. During operation, the support sections 2-5 with the detachment clamp 10 fixed on them are moved together with the billet (the supporting sections 2 and 3 {go from the center, and the supporting sections go to the center). Due to this, the lower toren, the bsg of the workpiece, is supported during the whole process, and the upper end of the workpiece is under pressure, which ensures the quality of the stretching of low elliptical rings. The workpiece is stretched by a cylindrical punch that has a lead-in conical part, which allows stretching narrow elliptical workpieces. The proposed stamp is intended for the manufacture of metal rings from flat metal sheets. Claims of the Invention A stamp for straightening annular billets with a stretch containing a movable upper and fixed lower plates, as well as a punch mounted in the upper plate with a tapered lead-in area, which is also distinguished in order to expand technological capabilities by ensuring that the blanks are edited with a raised ovality, it is shabzhen located on the bottom plate spring-loaded sections installed with the possibility of radial movement, as well as fixed on them and installed with the possibility of movement in a plane perpendicular to the plane of movement of the sections, with a puller clamp made in the form of sections, the stiffness of the springs being diametrically opposite to the located sections being the same, and the stiffness of one pair being greater than the other. Sources of information taken into account in the examination: 1. USSR Copyright Certificate №499009 Cl. At 21 O 25/00, 1974.

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