SU956124A1

SU956124A1 - Method of hydromechanic extrusion of hollow products

Info

Publication number: SU956124A1
Application number: SU813241194A
Authority: SU
Inventors: Анатолий Иванович Гулак; Виталий Григорьевич Шимановский; Юрий Терентьевич Сайко; Валерий Васильевич Носов
Original assignee: Предприятие П/Я А-7087
Priority date: 1981-02-02
Filing date: 1981-02-02
Publication date: 1982-09-07

Description

Изобретение относится к области обработки металлов давлением; а том· нее к способам гидропрессования полых изделий.The invention relates to the field of metal forming; and volume to methods of hydropressing hollow products.

Известный способ гидромеханического прессования полых изделий включает выпрессовывание жидкостью высокого давления составной заготовки и последующее удаление из изделия сердечника [1].A known method of hydromechanical pressing of hollow products includes extruding a high-pressure liquid composite billet and subsequent removal from the product core [1].

Недостатками этого способа является большой расход металла (сердечник идет в отход) и большая трудоемкость извлечения сердечника из изделия. ..The disadvantages of this method are the large consumption of metal (the core goes into waste) and the high complexity of extracting the core from the product. ..

Известен также способ гидромеханического прессования полых изделий , при котором осуществляют скрепление переднего торца заготовки со стержнем волочильного.устройства,последующее выпрессовывание ее давлением сжатой жидкости через очко матрицы с одновременным приложением усилий волочения и извлечения стержня из готового изделия [2].There is also known a method of hydromechanical pressing of hollow products, in which the front end of the workpiece is fastened with the rod of the drawing device, then it is pressed out by pressure of the compressed fluid through the die of the matrix with the simultaneous application of drawing and extraction of the rod from the finished product [2].

Недостатками такого способа являются повышенная стоимость заготовки из-за необходимости выполнения ⁵ места крепления стержня, невысокая производительность процесса из-за затрат времени на скрепление и открепление стержня и ограниченная ₁₀ номенклатура изделий.The disadvantages of this method are the increased cost of the workpiece due to the need to perform ⁵ places of attachment of the rod, the low productivity of the process due to the time spent on fastening and unfastening the rod and a limited ₁₀ range of products.

Цель изобретения - уменьшение стоимости изделия, повышение производительности и расширение номенклатуры изготавливаемых изделий, is Для этого по способу гидромеханического прессования полых изделий путем скрепления переднего торца заготовки со стержнем волочильного устройства, последующего выпрессовы²⁰ вания ее давлением сжатой жидкости че рез очко матрицы с одновременным приложением усилия волочения и извлечения стержня из готового изделия,The purpose of the invention - reduction of product cost, productivity improvement and expansion of the range of manufactured products, is for this according to the method of the hydromechanical pressing hollow articles by bonding the front end of the blank from rod-drawing device further vypressovy ²⁰ Bani its pressure compressed fluid Th cut point of the matrix with the simultaneous application of force drawing and removing the rod from the finished product,

956121956121

..скрепление стержня волочильного уст- . ройства с заготовкой осуществляют обжатием металла заготовки на стержне волочильного устройства путем вы. давливания переднего конца заготов- 5 ки давлением сжатой жидкости, а извлечение стержня из изделия производят путем приложения осевого усилия...bond rod drawing. Devices with the workpiece are carried out by compressing the metal of the workpiece on the rod of the drawing device by you. pressing the front end of the workpiece 5 with the pressure of a compressed liquid, and removing the rod from the product is carried out by applying axial force.

На фиг. 1 показана операция введения стержня волочильного устройст- 10 ва в очко матрицы, установленной в контейнере; на фиг. 2 - операция радиального обжатия переднего конца заготовки жидкостью высокого давления; на фиг. 3 - операция, гидро- 15 механического прессования с приложением усилия волочения через стержень после взаимного сцепления Ътержня с заготовкой; на фиг. 4 - операция извлечения стержня из изделия путем 20 выдергивания.In FIG. 1 shows the operation of introducing the rod of the drawing device 10 into the point of the matrix installed in the container; in FIG. 2 - operation of radial compression of the front end of the workpiece with high pressure liquid; in FIG. 3 - operation, hydro-mechanical pressing 15 with the application of the pulling force through the rod after mutual engagement of the rod with the workpiece; in FIG. 4 - the operation of removing the rod from the product by 20 pulling.

Способ осуществляют следующим образом.The method is as follows.

В начальной стадии (см. фиг. 1) полую заготовку 1 устанавливают в 25 контейнер 2. К задней части заготовки примыкает оправка 3 с головкой 4, герметизирующей . внутренне полость заготовки от рабочей среды 5 в контейнере,. Стержень 6 волочильного 30 устройства 7 находится в крайнем правом положении (показано штрих-пунктирной линией).In the initial stage (see Fig. 1), the hollow billet 1 is installed in the 25th container 2. A mandrel 3 with a sealing head 4 is adjacent to the back of the billet. internal cavity of the workpiece from the working medium 5 in the container. The rod 6 of the drawing 30 of the device 7 is in the extreme right position (shown by the dashed line).

Затем стержень 6 вводят в очко матрицы 8 с помощью волочильного устройства 7 и устанавливают его в-;пределах зоны очага деформации заготовки. После этого поднимают давление жидкости в контейнере и радиально деформируют заготовку гидропрессованием (см. фиг. 2) вплоть до обжатия стержня на длине h материалом, заготовки.Then, the rod 6 is introduced into the point of the matrix 8 using the drawing device 7 and set it in - within the zone of the zone of deformation of the workpiece. After that, the liquid pressure in the container is raised and the workpiece is radially deformed by hydropressing (see Fig. 2) until the rod is crimped over the material length h, the workpiece.

- После взаимного сцепления заготовки со стержнем гидромеханически прес-. суют заготовку (см. фиг. 3), для чего, не прекращая гидропрессования в . процессе обжатия стержня; прилагают к нему усилие волочения, передающееся на заготовку.- After mutual engagement of the workpiece with the rod hydromechanically pres-. poke the workpiece (see Fig. 3), for which, without stopping hydropressing c. rod compression process; apply to it a drag force transmitted to the workpiece.

Отпрессованный профиль перемеща- i ют (см. фиг. 4) до упора торца профиля в волочильное· устройство 7 й прилагают к стержню дополнительное усилие дД к усилию Q., в результате чего стержень 6 выдергивают из изделия.The extruded profile is moved i (see Fig. 4) until the end of the profile abuts against the drawing device 7th; apply an additional force dd to the force Q to the rod. As a result, the rod 6 is pulled out of the product.

Claims

This invention relates to the field of metal forming; and specifically to the methods of hydraulic molding of hollow articles. The known method of hydromechanical pressing of hollow articles includes pressing out the high-pressure liquid of the composite billet and then removing the core D. from the product. The disadvantages of this method are the high consumption of metal (the core goes to waste) and the greater laboriousness of extracting the core from the product. A method of hydromechanical pressing of hollow articles is also known, in which the front end of the workpiece is bonded to the drawing rod. Then it is extruded by pressing compressed fluid through a point while simultaneously drawing a rod from the finished product 2. The disadvantages of this The method is the increased cost of the workpiece due to the need to perform the place of attachment of the rod, the low productivity of the process due to the time spent on bonding and opening eplenie rods and limited product range. The purpose of the invention is to reduce the cost of the product, increase productivity and expand the range of manufactured products. To do this, by the method of hydro-mechanical pressing of hollow products by bonding the front end of the workpiece with the rod of the drawing device, then pressing it out with the pressure of a compressed fluid through the matrix point while simultaneously applying a force of drawing and removing the rod from the finished product, 395. attaching the rod of the drawing unit to the workpiece is carried out by pressing the metal of the workpiece onto the rod of the drawing unit by pressing the front end of the workpiece with pressure of compressed liquid, and removing the rod from the product is done by applying axial force. 1 shows the insertion operation of a rod of a drawing device 8 point matrix installed in a container; in fig. 2 shows the operation of radially crimping the front end of the preform with high pressure fluid; in fig. 3 shows the operation of hydromechanical pressing with the application of a drag force through the rod after interlocking the pin with the workpiece; in fig. - the operation of removing the rod from the product by pulling out. The method is carried out as follows. In the initial stage (see Fig. 1), the hollow billet 1 is installed in the container 2. A mandrel 3 adjoins the back of the billet with a head 4 sealing the inner cavity of the billet from the working medium 5 in the container. The rod 6 of the drawing device 7 is in the extreme right position (indicated by a dash-dotted line). Then, the rod 6 is inserted at the point of a maritime 8 using a dragging device 7 and is installed in-it: within the zone of the deformation zone of the workpiece. After that, the pressure of the liquid in the container is raised and the workpiece is radially deformed by hydraulic pressing (see FIG. 2) until the rod is pressed at the length h by the material, the workpiece. After interlinking the workpiece with the rod, the workpiece is hydromechanically pressed (see Fig. 3), for which, without interrupting the hydraulic pressing during the squeezing process, the stretch i applies to it a drag force transmitted to the workpiece. The extruded profile is moved i (see Fig. H) up to the stop of the profile end in the drawing device 7 and an additional force DD is applied to the rod by force Q., with the result that rod 6 is pulled out of the product. Claims Method of hydromechanical pressing of hollow articles by bonding the front end of the workpiece with the rod of the drawing device, then pressing it out with pressure of compressed fluid through the matrix point while simultaneously applying a drag and removing the rod from the finished product, characterized in that, in order to reduce the cost of the product, performance and expansion of the range of manufactured products, bonding the rod drawing device with the workpiece carry out Thieme metal preform wire-drawing device on the rod by extruding the front end of the preform a pressure of the compressed fluid and the extraction rod of the article is produced by applying a t the axial force. Sources of information taken into account in the examination 1. Ural VN and others. The deformation of metals by high pressure fluid. Moscow, Metallurgists, 1976, p. 359.

2. Zhitkov, V.V., et al. Formation by a high-pressure fluid of parts with an internal and external contoured profile. Communications Equipment, No. 10, Serie TPS, Moscow, 1978, p. 22-2 (prototype). U- / vvvv x vV4V ///// 7 //// UL - / y // Z ////////// Fug s w / l / z / zzzz / z.

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