SU860929A1

SU860929A1 - Apparatus for expanding axially-symmetrical articles

Info

Publication number: SU860929A1
Application number: SU802864904A
Authority: SU
Inventors: Георгий Сергеевич Батков; Константин Николаевич Богоявленский; Александр Викторович Варенцов; Игорь Андреевич Васянович; Николай Михалович Елкин; Борис Александрович Малькевич; Сергей Николаевич Старцев
Original assignee: Ленинградский Ордена Ленина Политехнический Институт Им. Калинина; Организация П/Я Х-5263
Priority date: 1980-01-04
Filing date: 1980-01-04
Publication date: 1981-09-07

Description

Изобретение относитс к области обработки металлов давлением, а именно к изготовлению раскаткой изделий, имеющих форму тел вращени .The invention relates to the field of metal forming, in particular to the manufacture of rolling products having the form of rotation bodies.

Известно устройство дл раскатки изде- 5 ЛИЙ, в котором раскатной валок, подаваемый в направлении оси заготовки, наклонен к оси заготовки под углом от 150 до 180° 1.It is known a device for rolling a product - 5 LIH, in which the roller roll fed in the direction of the axis of the workpiece is inclined to the axis of the workpiece at an angle from 150 to 180 ° 1.

Устройство содержит смонтированные ш в корпусе станины неподвижную головку с вращающимс шпинделем, в котором размещена матрица дл установки заготовки, и подвижную в осевом направлении головку с холостым раскатным валком.15The device comprises a fixed head with a rotating spindle in which the matrix for setting the workpiece is mounted mounted in the frame housing, and a head movable in the axial direction with an idle roll of roller 15

Недостаток известного устройства заключаетс в том, что точность диаметральных размеров раскатываемых изделий ограничена недостаточной поперечной жесткостью инструмента, св занной с особен- 20 ностью конструкции устройства и оснастки.A disadvantage of the known device lies in the fact that the accuracy of the diametrical dimensions of the rolled products is limited by the insufficient transverse rigidity of the tool, which is associated with the particular design of the device and tooling.

Наиболее близким решением из известных вл етс устройство дл раскатки осесимметричных изделий, содержащее смонтированные в корпусе станины непо- 25 движную головку с приводным шпинделем, св занную с шпинделем матрицу дл установки заготовки, подвижную в осевом направлении головку с холостым раскатным валком, установленным своей осью под 30The closest solution known is a device for rolling axisymmetric products, comprising a fixed head mounted in the frame body with a drive spindle, a matrix for setting the workpiece connected to the spindle, a head movable in the axial direction with an idle roll of roll, installed with its axis under thirty

углом к оси шпиндел , и суппорт с опорным роликом 2.angle to the spindle axis, and the caliper with the support roller 2.

Недостатками указанного устройства вл ютс невысока надежность подшипниковых узлов опорного ролика, вызванна значительными поперечными усили ми, возникающими при раскатке осесимметричных изделий с буртами, значени которых могут превышать половину основного деформирующего усили , повышенный износ инструментов вследствие посто нного силового взаимодействи и возникающего на контактных поверхност х трени скольжени . Поперечные ролики не могут быть использованы дл полного оформлени раскатываемой поверхности бурта издели , а только частично дл получени радиусов и фасок.The disadvantages of this device are the low reliability of the bearing assemblies of the support roller caused by significant transverse forces arising from rolling axisymmetric products with shoulders, the values of which can exceed half of the main deforming force, increased wear of tools due to constant force interaction and arising on the contact surfaces of friction slip. The transverse rollers cannot be used to fully design the roll surface of the product, but only partially to obtain radii and chamfers.

Целью изобретени вл етс расширение технологических возможностей и повышение надежности устройства путем увеличени его осевой жесткости.The aim of the invention is to expand the technological capabilities and increase the reliability of the device by increasing its axial rigidity.

Claims

This goal is achieved in that a device for rolling axially symmetric products containing a stationary head mounted in the frame body with a driving spindle, a matrix connected to the spindle for mounting a billet, an axially movable head with an idle roll of roll, set by its axis at an angle to the spindle axis , and the caliper with the support roller, which has the ability to interact with the matrix, is equipped with two faceplates, the first of which is mounted on the spindle, and the second in the moving head is coaxial with the roll m roller, and two additional supports, respectively, located between the first faceplate and fixed head and the second faceplate and the movable head, the matrix is located in the first faceplate, and the idle roll roll in the second. In this case, the first faceplate is made with a ring gear. In addition, the support roller is made in the form of an annular holder, covering the matrix. The drawing schematically shows the proposed device. The device contains a stationary head 2 with a rotating spindle 3 mounted on the housing frame 1, a faceplate 4 mounted on it with a ring gear, supported on a rolling support 5 on which the matrix 6 is installed to accommodate the workpiece 7, the movable head 8 hours: -installed on it with the possibility of rotation by the idler pin 9, the angle between the axis of which and the axle of the fixed head is 150-180 °, the faceplate 10 fixed on it, resting on the rolling support 11 on which the roll roller 12 is attached, and the transverse support 13, mounted on the frame body. The female ring 14 is rotatably and reciprocally mounted from the power cylinder 15 in a direction perpendicular to the spindle axis of the fixed head. The ejector 16 is designed for removal of finished parts. The device works as follows. The workpiece 7 is installed in the cavity of the matrix 6, the rotational drive of the spindle 3 is turned on, and the rolling roller 12 is brought to the workpiece 7. At the same time, the nodalization of the transverse support 13 is turned on and the female holder 14 is brought into position corresponding to the dimensions of the outer diameter of the roll of the axisymmetric product being rolled. By further feeding of the roll 12, the workpiece 7 is rolled out, the outer dimensions of the product are designed with the help of the shroud 14. After the rolling process is finished, roll 12 is removed, then the caliper 13 is removed and the rollout part is pushed out by the ejector 16. In the proposed device, spindle and face the fixed and movable heads are made collapsible, while the faceplates 4 and 10 rest on additional supports 5 and 11, thus achieving the leveling of the elastic deformations of the spindles and tools in the rolling process. This increases the reliability of the device. The design of the faceplate, the spindle of the stationary head 4, allows its outer surface to be in the form of a ring gear, through which the planing plate is rotated from the drive, thereby unloading the guide spindles from the torque effect. This reduces the size of the device as a whole and increases its reliability. The presence in the transverse caliper of the enclosing casing 14 provides the possibility of shaping the entire surface of the collar of the necessary complex profile, for example, a gear, grooved one, i.e., it allows to expand the technological capabilities of the device. Claim 1. Device for rolling axisymmetric product containing stationary head mounted in housing body with drive pin, associated with spindle matrix for positioning the workpiece, axially movable head with idling roller, set by its axis at spindle angle, and support with a support roller capable of interacting with the die, characterized in that, in order to expand the technological capabilities and increase the reliability of the device by increasing its It is equipped with two plates, the nerve of which is mounted on the pinch, and the second in the movable head coaxially with the rolling roll, and two additional supports, respectively, located between the first plate and the fixed head, and the second face plate and the movable head, the matrix is placed in the first plate and idle roll roll in the second. 2. The device according to claim 1, characterized in that the first face plate is made with a ring gear. 3. The device according to claim 1, characterized in that the support roller is made in the form of an annular cage covering the matrix. Sources of information taken into account in the examination 1.Loktyunin Yu. A., Yakimansky B, B, Rolling teeth of the spiral-conical wheels. Sat "New metal forming processes, Ed. Academy of Sciences of the USSR, M., 1962, p. 49, p. one.

2. USSR author's certificate jYo 733820, cl. B 21 N 1/06, 14.01.78,