SU867490A1

SU867490A1 - Method of producing symmetrical-axis parts

Info

Publication number: SU867490A1
Application number: SU782669158A
Authority: SU
Inventors: Константин Николаевич Богоявленский; Игорь Андреевич Васянович; Николай Михайлович Елкин; Владимир Викторович Лапин; Сергей Михайлович Мочалов
Original assignee: Ленинградский Ордена Ленина Политехнический Институт Им. М.И.Калинина
Priority date: 1978-10-02
Filing date: 1978-10-02
Publication date: 1981-09-30

Description

1one

Изобретение относитс к обработке металлов давлением, в частности к производству осесимметричных деталей раскаткой,The invention relates to the processing of metals by pressure, in particular the production of axisymmetric parts by rolling,

Известен способ получени осесимметричных кольцевых деталей холодной торцовой раскаткой, согласно которому производитс раскатка осесимметричнйй детали от исходной заготовки, например , прутка или трубы, установленной во вращающейс кольцевой матрице, жестко зафиксированной в осевом направлении , вращающимс валком, подаваемом в направлении оси заготовки, с отделением готовой детали в конце процесса раскатки l Однако данный способ не позвол ет достигать высоких степеней деформации из-за возникновени в начальной стадии процесса раскатки значительных раст гивающих тангенциальных напр жений , что ограничивает его техналогические возможности.A known method for producing axially symmetric ring parts with cold face rolling, according to which axially symmetric parts are rolled out from the original billet, for example, a rod or pipe installed in a rotating ring matrix rigidly fixed in the axial direction, rotating by a roller fed in the direction of the billet, separating the finished details at the end of the rolling process. However, this method does not allow to achieve high degrees of deformation due to the occurrence in the initial stage of the process bedroll substantial tangential tensile stress, which limits its capabilities tehnalogicheskie.

Цель изобретени - обе-спечение возможности получени детешей со сложным профилем поперечного сечени путем увеличени степени деформации.The purpose of the invention is to enable children with a complex cross-sectional profile to be obtained by increasing the degree of deformation.

Поставленна цель достигаетс за, счет того, что к заготовке в зоне раскатки прикладывают радиальное усилие.The goal is achieved due to the fact that a radial force is applied to the workpiece in the rolling zone.

При этом передачу радиального усили осуществл ют посредством, по крайней мере, одного ролика, который по мере раскатки заготовки перемещают в радиальном направлении со скооостью, соответствующей скорости роста радиуса детали, а в осевом направлении со скоростью, соответствующей скорости осевой подачи валка.In this case, the transfer of the radial force is carried out by means of at least one roller, which as the rolling of the workpiece is moved in the radial direction with a speed corresponding to the growth rate of the radius of the part, and in the axial direction with a speed corresponding to the speed of the axial feed of the roll.

10ten

На фиг. 1-4 представлена технологическа схема осуществлени способа изготовлени осесимметричных деталей.FIG. 1-4 are a flow chart of an embodiment of a method for manufacturing axisymmetric parts.

Способ осуществл етс следующим The method is as follows.

15 образом.15 way.

заготовку 1 (фиг. 1) помещают в полость матрицы 2 и фиксируют в осевом положении при помощи опоры 3,, затем подвод т деформирующий валок 4 и the workpiece 1 (Fig. 1) is placed in the cavity of the matrix 2 and fixed in the axial position by means of the support 3, then the deforming roller 4 is fed and

20 ролик 5, имеющие возможность вращени , включают вращение матрицы 2 с заготовкой 1 и подачей валка 4 деформируют заготовку Кфиг. 2) . Одновременно в зоне деформации на заготов25 ку 1 воздействуют в радиальном направлении роликом 5, который по мере раскатки отвод т в радиальном напрсшлении со скоростью увеличени диаметра заххэтовки в направлении оси 20, the roller 5 having the possibility of rotation includes the rotation of the die 2 with the workpiece 1 and the feeding of the roll 4 deform the workpiece Kfig. 2). At the same time, in the deformation zone, the blank 25 is applied in the radial direction by the roller 5, which, as it is rolled, is retracted in the radial direction with a speed of increase in the diameter of the hatching in the direction of the axis

Claims

30, at the speed of movement of the deforming roller 4. In the final stage of rolling, when the outer diameter of the deformed part of the workpiece 1 becomes equal to the final diameter of the finished part b, the movement of the roller 5 in the radial and axial directions and the further deformation and separation of the finished part 6 are disabled are through the roll 4 (Fig. 3). The fixing of the part in the final stage of rolling is carried out by a roller 5 and two supporting rollers 7 (Fig. 4). Example. In this method, at a pilot plant, which is a modernized thread rolling machine DG-8 with a force of 34.5 tf, a part of a gas turbine engine of an angular profile from material 1X18H9T was obtained. Initial preparation - prut with a diameter of 22 mm. The unrolled part has the following dimensions: outer diameter 42.5 mm, inner diameter (smallest) 22 mm, inner diameter (largest) 38 mm, height 10 mm. The greatest force of rolling is 15 tf, the feed speed of the roll is 0.1 mm per revolution of the workpiece, the rotation speed of the workpiece is 60 rpm, the greatest force on the cross roller is 5 tf. The proposed method of manufacturing axisymmetric parts can be implemented for the production of washers and cups of steam turbine engines, bearing rings, frameworks and bases of potentiometers. In particular, in the manufacture of parts of potentiometers, the introduction of a new method makes it possible to increase labor productivity by 15%, to increase the utilization rate of the metal by 2 times. At the same time, the annual economic effect will amount to 28 thousand rubles, including} saving basic materials 15.2 thousand rubles, saving 12.8 thousand rubles of labor, the payback period for additional capital investments is 0.2 years, the number of workers released 8 people. Claim 1. A method of manufacturing axisymmetric parts in which the original billet is installed in a rotating annular matrix is fixed axially and rolled out with a rotating roller fed in the direction of the axis of the billet, characterized in that in order to make parts with a complex cross-sectional profile possible by increasing the degree of deformation, a radial force is applied to the workpiece in the rolling zone.

2. Method POP.1, characterized in that the transfer of the radial force is carried out by means of at least one roller, which, as the workpiece is rolled, is moved in the radial direction with a speed corresponding to the growth rate of the part radius, and in the axial direction with a speed the corresponding speed of the axial feed of the roll. Sources of information taken into account during the examination 1. USSR Author's Certificate In accordance with application No. 2501538 / 25-27, cl. B 21 H 1/02, 1977.