SU975147A1

SU975147A1 - Expansion drawing die

Info

Publication number: SU975147A1
Application number: SU802907180A
Authority: SU
Inventors: Александр Анатольевич Афанасьев; Виктор Поликарпович Красильников; Юрий Леонидович Зубарев
Original assignee: Горьковский Автомобильный Завод Производственное Объединение "Газ"
Priority date: 1980-04-04
Filing date: 1980-04-04
Publication date: 1982-11-23

Description

(54) ШТАМП ДЛЯ ВЫТЯЖКИ С РАСТЯЖЕНИЕМ(54) STAMP FOR EXTRACT WITH STRETCHING

Изобретение относитс к обработке металлов давлением.и, в частности к технологической оснастке дл листовой штамповки.The invention relates to the processing of metals by pressure. And, in particular, to a tooling for sheet metal forming.

Наиболее близким к изобретению по технической сущности и достигаемому результату вл етс штамп дл выт жки с раст жением, содержащий пуансон , матрицу с вертикальными выступами в периферийной части и две пары подвижных в направлении от оси штам-. па и пойпружиненных к выступам матрицы прижимов, верхние из котоЕ«х имеют клинковую опорную поверхность 1 .Closest to the invention to the technical essence and the achieved result is a stretch stamp with a stretch containing a punch, a matrix with vertical protrusions in the peripheral part and two pairs moving in the direction from the axis of the slit. Pa and clamped to the protrusions of the matrix clips, the top of which "x have a blade bearing surface 1.

Однако в известном штампе выт жка и раст жение заготовкой происход т, одновременно, поэтому зажатые прнжи-. мами участки заготовки в процессе выт жки не участвуют, что ведет к повышенному расходу материала.However, in the well-known stamp, stretching and stretching by the billet occur at the same time, therefore, the clamped strings are. The parts of the workpiece are not involved in the drawing process, which leads to an increased consumption of material.

Цель изобретени - экономи металла за счет использовани в процессе выт жки зажимаемых в процессе раст жени участков заготовки.The purpose of the invention is to save metal by using parts of the billet that are clamped during the stretching process.

Поставленна цель достигаетс тем, что в штампе дл выт жки с раст же- нием, содержащем пуансон, матрицу с вертикальными выступгми в периферийной части и две пары подвижных в направлении от оси штампа и подпружкненных к выступам матрицы прижимов, по меньшей мере один из которых имеет клиновую опорную поверхность, штамп снабжен двум парами зубчатых пластин, установленных в каждой паре в контакте между собой и с возмож .| ностью относительного перемещени вдоль боковой поверхности зубьев, при этом нижние пластины жестко св заны The goal is achieved by the fact that in a stretch stamp with a stretch containing a punch, a matrix with vertical protrusions in the peripheral part and two pairs moving in the direction from the axis of the stamp and the clamps, which are spring loaded to the protrusions of the matrix, wedge bearing surface, the stamp is equipped with two pairs of toothed plates installed in each pair in contact with each other and with the possibility. | relative displacement along the lateral surface of the teeth, while the lower plates are rigidly connected

10 с нижними прижимами, а верхние пласI тины имеют горизонтальные выступы,10 with the lower clamps, and the upper plates of the Tina have horizontal projections,

расположенные с возможностью взаимо; действи с вертикальными выступами матрицы, при этом верхние прижимы located with the possibility of inter; action with the vertical protrusions of the matrix, while the upper clamps

15 целесообразно выполн ть с рифтом треугольного сечени на рабочей поверхности , а нижние - с соответствующей выемкой.15 it is advisable to perform with a rift of a triangular cross section on the working surface, and the lower ones with a corresponding notch.

На фиг. 1 представленштамп (сле20 ва - в исходном положении, справа после окончани процесса выт жки), осевое сечение; на ,фиг. 2 - узел прижима , в; увеличенном масштабе.FIG. 1 shows the stamp (the left 20 is in the initial position, to the right after the end of the stretching process), the axial section; in FIG. 2 - clamping unit, c; on a larger scale.

Штамп содержит пуансон 1, плиту The stamp contains a punch 1 plate

Claims

25 2, the matrix 3 with the lower clamps 4 carrying the guide columns 5. On the lower clamps the lower gear plates 6 and the guide bars 7 are fixed. On the plate 2, there are upper clamps 8 with the guide sleeves 9. The clamps 4 and 8 are spring-loaded the direction of its movement by the springs 10. On the lower gear plates 6, the upper teeth of the Sheet are arranged for displacement along the lateral surface of the teeth. The plates 11 have horizontal protrusions that interact when the clamps move with the vertical protrusions 12 of the matrix. On the upper clamps 8 there are clamping rifts 13 of triangular cross-section, and on the lower clamps made corresponding recesses. Itamp works as follows. The blank (sheet) is placed between the guide bars 7. During the course of the outer press slide, the lower clamps 4 and the upper 8 are closed, and the columns 5, which fall into the sleeves 9, form a single unit. With the further movement of the outer slider down, the blocks along the bevels in the matrix 3 and the plate 2 move from the pin, producing a preliminary stretching of the workpiece. When maximum stretching is achieved, the horizontal protrusions of the toothed plates 11 abut against the protrusions 12 of the matrix 3 and open the work clamp assemblies. When the outer slide of the press is stopped, the inner slide moves downward and the die 1 attached to it presses the workpiece. At this moment, the clamping rifts 13 have fastening ribs. The coil spring packs 10 return the clamps 4 and 8 to their original position during the return stroke of the outer slide. The effectiveness of the proposed staff lies in the additional economy of the metal, due to the use of metal, which is applied to the work clamp and preliminary stretching of the sheet. The invention allows the use of double action presses, which usually stand first in the lines. The quality of the parts being stamped increases and their rigidity increases. As a result of the increase in stiffness, it is possible to reduce the thickness of the workpiece. Claim 1. Stretch die with stretch containing a punch, a matrix with vertical protrusions in the peripheral part and two pairs of clamps moving in the direction from the punch axis and spring loaded to the protrusions of the matrix, at least one of which has a wedge bearing surface with the rise to the axis of the stamp, which is different from the fact that, in order to save metal due to the use in the stretching process of the hardened parts in the stretching process in the workpiece, it is equipped with two: parametallic plates installed with each pair in the back kTe together with the possibility of relative movement along the side surface of the teeth, wherein the lower plate is rigidly associated with the lower clamps, and the upper plates have horizontal projections disposed to cooperate with vertical protrusions matrix.

2. A stamp according to claim 1, characterized in that the upper clamps are made with a rift of a triangular cross section on the working surface, and the lower clamps with a corresponding recess. Information sources,; taken into account during the examination 1. USSR Copyright Certificate No. 741997, cl. B 21 O 24/04, 08.22.81 (prototype).