SU804048A1

SU804048A1 - Tool for pressing articles with lubricant

Info

Publication number: SU804048A1
Application number: SU782699545A
Authority: SU
Inventors: Юрий Федорович Шевакин; Александр Михайлович Рытиков; Николай Иванович Касаткин; Вячеслав Георгиевич Белов; Виктор Петрович Дерябин; Александр Вячеславович Кошурин; Александр Михайлович Никифоров; Владимир Яковлевич Цесарский; Рафаил Павлович Изаков; Евгений Павлович Ядыкин
Original assignee: Ленинградское Производственное Объеди-Нение По Обработке Цветных Металлов"Красный Выборжец"
Priority date: 1978-12-22
Filing date: 1978-12-22
Publication date: 1981-02-15

Description

1one

Изобретение относитс к обработке, металлов -давлением, а именно к изготовлению прессованных изделий.The invention relates to the processing of metals by pressure, namely the manufacture of extruded products.

Известен инструмент дл прессовани из- делий со смазкой, содержащий цилиндрический контейнер с конусной выточкой со стороны выхода и сопр гающийс с ним по конической поверхности выточки матрицедержатель с матрицей, имеющей калибрующее отверстие. При прессовании с обильной смазкой важную роль играет герметизаци сочленени контейнера и матрицы, исключающа удаление смазки с контактных поверхностей металл-инструмент при прессовании (I.A known tool for compressing articles with lubricant, comprising a cylindrical container with a conical groove on the outlet side and a matrix holder with a calibrating orifice that mates with a conical surface of the groove. When pressing with a rich lubricant, the sealing of the junction between the container and the die plays an important role, eliminating the removal of grease from the metal-tool contact surfaces during pressing (I.

Однакб известный инструмент имеет недостатки , заключающиес в низкой стойкости инструмента, так как одноконусна проточка матрицедержател будет быстро выходить из стро при перекосе матрицедержател ; из-за отсутстви плавного перехода от стенок контейнера к матрице, происходит разрущение смазочного сло и ухудщение качества поверхности прессованных изделий; сопр жение частей инструмента находитс в зоне высоких температур и давлении .However, a well-known tool has the disadvantages of low tool life, since the single-conical groove of the matrix holder will quickly fail when the matrix holder is tilted; due to the absence of a smooth transition from the walls of the container to the matrix, the destruction of the lubricant layer and the deterioration of the surface quality of the pressed products; The interface between the parts of the instrument is in the high temperature and pressure zone.

Цель изобретени - повышение стойкости инструмента и качества прессизделий .The purpose of the invention is to increase tool life and quality of press products.

Поставленна цель достигаетс тем, что в контейнере между конусной выточкой и его рабочим участком выполнен переходный плоскнй участок с диаметором, составл ющим 1,25-1,28 от диаметра полости контейнера , и матрицедержатель сопр жен с контейнером с образованием кольцевой полости шириной, составл ющей 0,015-0,02The goal is achieved by the fact that in the container between the conical undercut and its working section there is a transition plane section with a diameter of 1.25-1.28 of the diameter of the container cavity, and the matrix holder is conjugated with the container with the formation of an annular cavity of the width 0.015-0.02

от диаметра полости контейнера, при этом диаметр заходного торца матрицедержател составл ет 1,29-1,32 от диаметра полости контойнера, а в матрице выполнена за.ходна цилиндрическа полость, соответствующа по диаметру полости контейнера,the diameter of the cavity of the container, wherein the diameter of the lead-in end of the matrix holder is 1.29-1.32 from the diameter of the cavity of the container, and in the matrix there is an inlet cylindrical cavity corresponding to the diameter of the cavity of the container,

и плавно сужающа с к калибрующему отверстию матрицы полость дл обжима заготовки .and a cavity, which gradually tapers to the calibrating hole of the matrix, for crimping the workpiece.

На фиг. 1 продстАвлен инструмент, продольный разрез, перед прессованием; наFIG. 1 The tool is extended, longitudinal section, before pressing; on

Claims

FIG. 2 - the same in the pressing process. The device comprises a container 1, a matrix organizer 2 with a working end 3, and a matrix 4 located in the matrix holder 2 along a direct or oratic cone. Splinton 5. A conical undercut 6 is made on the end surface of the container I on the side of matrix holder 2. The angle of inclination of this cone of the undercut is equal to the angle of inclination of the generator of the starting cone of matrix holder

2. The diameter of the smaller base of the conical undercut 6 of the container 1 is made equal to 1.25-1.28 of the diameter of the container cavity. The diameter of the end face 3 of the holder 2 is 1.29-1.32 of the diameter of the container cavity. The matrix 4, located in the matrix holder 2, has a lead-in part 7 with a diameter equal to the diameter of the cavity of the container 1, and a crimping part 8 with a smooth transition to the matrix that calibrates in regards to core 9. The coupling of the matrix holder 2 to the matrix 4 is carried out on conical surfaces, while between the end surfaces of the matrix holder with a matrix and the recess 6 of the container 1 in the mating state there is an annular gap 10 with a width of 5 (0.015 +, 02) Dk, where D - the diameter of the cavity of the container. The presence of a lead-in area in the matrix funnel provides ideal conditions for cutting the metal of the ingot, sealing the interface between the matrix holder and the container over the annular gap, and increasing the strength of the mating elements, since they are removed from the crimping zone having elevated temperatures and pressures. The pressing is carried out as follows. The die holder 2, together with the die 4, is inserted into the throat of the press and closes the opening of the container 1. This position of the die holder secures a locking device from the axial movements (not shown). The container and the matrix are abundantly lubricated. Moving the pin 5 into the container 1, the ingot 11 heated to the pressing temperature is fed. Pressure is applied to the pin 5, and pressing starts. In the initial stage of pressing, the pressed metal flows into the annular gap ..10 and with yes; the ingot is cut and remains there until the end of pressing, thereby sealing the container 1 and the matrix holder 2 together with the matrix 4. Shouting the pressing (if the process is separating the pressure switch) The die holder 2 with the die 4 is extended from the neck of the press and operations are performed to separate the pressure switch. The extrusion of hollow profiles and pipes is carried out in a similar way, only the operations of pressing out and inserting the ingot with a needle are entered. Example. On the proposed tool, the press without pressing the rod is made of L63 brass rods with a diameter of 40 mm. The pressing is carried out on a 1500 ts horizontal hydraulic press from a 9,180 mm container. The tool includes a matrix with a double-radius channel profile (sigmoid) with a cylindrical groove 8 mm wide at the channel beginning, a matrix holder with a single cone with a bevel angle of 10 ° and a cone portion of 70 mm, a container with a corresponding matrix holder with a conical boring 75 mm long, and a press-shank concave profile which is attached to the pin. The resulting rods have good surface quality. In total, 100 compacts were carried out, while the tool life increased 1.5-2 times. The application of the proposed tool increases the performance of the press by about 25-30 / 0 and gives an economic effect of about 50 thousand rubles. in year. The invention The tool for pressing products with lubricant, containing a cylindrical container with a conical groove on the output side and a Matrix holder with a die having a calibrating orifice that mates with it along the conical surface of the groove, in order to improve tool resistance and quality of press parts, In the container between the conical undercut and its working section there is a transition flat section with a diameter of 1.25-1.28 of the diameter of the container cavity, and the matrix holder is conjugated the container with the formation of an annular cavity with a width of 0.015-0.02 of the diameter of the cavity of the container, the diameter of the rear end of the matrix holder being 1.29-1.32 of the diameter of the cavity of the container, and the lead cylindrical cavity corresponding to the diameter the cavity of the container, and a cavity for crimping the workpiece smoothly tapering to the matrix calibration hole. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 339329, cl. B 21 C 23/08, 08.10.70.

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