SU893324A1

SU893324A1 - Die for drawing

Info

Publication number: SU893324A1
Application number: SU792832837A
Authority: SU
Inventors: Станислав Иванович Макаров; Альберт Львович Переплетчиков; Владимир Лукич Овчаров
Original assignee: Специальное Конструкторско-Технологическое Бюро Аналитического Приборостроения
Priority date: 1979-10-29
Filing date: 1979-10-29
Publication date: 1981-12-30

Description

1one

Изобретение относитс к обработке металлов давлением.The invention relates to the processing of metals by pressure.

Известен штамп дл выт жки, содержащий закрепленный в верхней плите пуансон, установленные на нижней плите матрицу и вертикально-подвижный прижим, а также механизм перемещени прижима l.A stretch stamp is known that contains a die fixed in the upper plate, a die mounted on the lower plate and a vertically movable clamp, as well as a mechanism for moving the clamp l.

Недостатками известного штампа вл ютс сложность регулировки зазора между матрицей и прижимом, что не позвол ет учесть отклонени по толщине заготовки, заложенные в ГОСТах на листовой прокат, использование значительной части хода пресса на зажим заготовки.The disadvantages of the known stamp are the difficulty of adjusting the gap between the die and the clamp, which does not allow to take into account the deviations in the thickness of the workpiece laid in the State Standards for sheet metal, the use of a significant part of the press stroke for the work clamp.

Цель изобретени - обеспечение регулировки усили прижима на отдельных участках заготовки.The purpose of the invention is to provide adjustment of the clamping force in certain areas of the workpiece.

Поставленна цель достигаетс тем, что в штампе дл выт жки, содержащем закрепленный в верхней плите пуансон , установленные на нижней плите матрицу и вертикально подвижный приЖИМ , механизм перемещени прижима -выполнен в виде закрепленных на верхней плите клиньев и установленных на нижней плите и подпружиненных относительно прижима кронштейнов, несущих шарнирно св занные с ними двуплечие рычаги, одни концы которых установлены в контакте с клинь ми, а другие посредством регулировочных винтов св заны с прижимом.The goal is achieved by the fact that in a stretch stamp containing a punch fixed in the upper plate, a die mounted on the bottom plate and a vertically movable PRESS, the pressure transfer mechanism is made in the form of wedges fixed on the top plate and mounted on the bottom plate and spring-loaded relative to the clamp brackets, hinged two-arm levers with one arm, one ends of which are mounted in contact with the wedges, and the other by means of adjusting screws are connected to the clamp.

10ten

. На фиг. 1 показан штамп в рабочем состо нии (сечение А-А на фиг. k); на фиг. 2 - конструкци прижима (сечение В-В на фиг. ); на фиг. 3 15 штамп в исходном положении (сечение А-А иа фиг. i); на фиг. k - нижн часть штампа в плане (сечение Б-Б на фиг. 1).. FIG. 1 shows a stamp in working condition (section A-A in FIG. K); in fig. 2 shows the design of the clamp (section BB in FIG.); in fig. 3 15 stamp in the initial position (section A-A and figa. I); in fig. k is the lower part of the stamp in the plan (section BB in Fig. 1).

Штамп состоит из верхней плиты 1, The stamp consists of the top plate 1,

Claims

20 of the bottom plate 2, the punch 3. fixed in the top plate 1, the matrix k attached to the bottom plate 2, the ejector 5 installed in the hole of the bottom plate 2 and the matrix 4, the intermediate plate 6 connected to the bottom plate 2, screws 7 through the spring 8, a pressing movement mechanism consisting of wedges 9 double-arm levers 10 rotating around axes 11 mounted on crown mattes 12 and having adjustment screws 13 and lock nuts 1. Megdu springs 15 are mounted on brackets 12 and intermediate plate 6 are movably connected with bottom plate 2 columns 16. Brackets 17 are fixedly connected to the bottom plate 2. Axles 18 on which axles 19 rotate. On spring 19, latches 19 act on springs 20. Presser 22 is connected to intermediate plate 6 with screws 21 and elastic strip 23 is installed between intermediate plate 6 and clamp 22 . With the top plate 1 are connected the rods 2 with the rollers 25. Shtam works as follows. When the upper part of the punch moves downwards, the 9 presses on the two shoulders the levers 10, which, being spring-loaded with springs 15, do not have the ability to rotate around the axes 11 and the brackets 12 together with the intermediate plate 6 fall down, overcoming the resistance of the spring 8 against the stop into the lower plate

2. In this case, the latches 17 connect the bottom plate 2 to the brackets 12. At this moment, the wedge 9 moves the levers 10 apart, which, rotating on the axles 11, act on the adjusting screws 13. intermediate plate 6, and pressure 22. presses the workpiece to the matrix 4. With further downward movement, the vertical sections of the wedges 9 interact with the double-arm levers 10, which stop rotating on the axes 11 At this point, puffHcoH 3 comes into operation and the workpiece is pulled out with constant clamping force. At the 44 moment of the end of the stretch, the rollers 25 of the rods 24 move the latches 19, releasing the brackets 12. As they move upwards, the squeeze system returns to its original position. The gap between the die 4 and the clamp 22 in the initial position is selected depending on the height of the elongated part. The adjustment of the clamping force at certain areas of contact with the workpiece is carried out by adjusting screws 13 and fixed by lock nuts 14. The use of an extrusion punch of the proposed design will allow to obtain quality parts on simple-action crank presses, to reduce the time taken to prepare the production of products. DETAILED DESCRIPTION A drawing punch comprising a punch fixed in the upper plate, a matrix mounted on the bottom plate and a vertically displaced pressing as well as a pressing movement mechanism, characterized in that in order to adjust the pressing force in certain parts of the workpiece, the pressing movement mechanism is made in the form of wedges fixed on the upper plate and mounted on the lower plate and spring-loaded with respect to the clamp brackets carrying two-arm levers with hinged link, one ends of which are W.contacts are wedged, while others are fitted with an adjusting screw that connects them to the clamp. Sources of information taken into account in the examination 1. USSR Author's Certificate No. 199811, cl. B 21 D 24 / 04,28.07.66 (prototype). lit, 1 fi-1.1 13 P W (rig