UA14190U - Device for manufacture of articles by rolling - Google Patents

Abstract

Device for manufacture of articles by rolling contains a housing and an annular tool rigidly fixed on it. Housing is mounted with possibility of rotation in the bearing unit and is executed with a cavity, inside which an additional annular tool is mounted with possibility of eccentric shift with respect to the technological axis for a value, equal to the product of the distance between the point of intersection of technological axis with rotational axes of annular tool and additional annular tool by the tangent of the angle of setting of the device. Additional tool is equipped with a former executed in the cross section in the form of right-angled trapezium with cylindrical calibration surface and spherical apex.

Description

Description of the invention

The useful model relates to the field of engineering, namely to the processing of metals by pressure and can find application 2 in the manufacture of hollow products from tubular blanks, for example, drill rods, which are connected to a drill press by means of profiled end sections.

A known device for processing tubular parts |1), which contains a rotatable matrix installed in the body and fixed on a vertical spindle with the possibility of rotation and reciprocating movement relative to the frame body, on the end of which a profile ring groove is made, the same as on 70 working surface of the matrix.

A well-known device for crimping a tubular workpiece |), containing pressure elements of preliminary and final processing mounted on a foot and installed with the possibility of free rotation, as well as axial and radial movements.

The closest analog to the claimed device, selected as a prototype, is a device for 12 manufacturing products by rolling |Z|, which contains an eccentric mechanism placed in the body and a rocking ring, in which the tool holder is mounted, while the pins of the tool holder and the eccentric of the mechanism are connected by means of a connecting rod. Common essential features of the known and claimed device are the presence of a housing, a ring tool, and the tool performs a circular cone movement relative to the processed workpiece. 20 During the operation of the known device, reduction of long sections of tubular blanks, including their end sections, is ensured. However, the design of the device does not allow profiling the outer surface of the workpiece, for example, making a longitudinal groove, at the same time as reduction.

The useful model is based on the task of expanding the technological capabilities of the device by ensuring the simultaneous reduction of the outer diameter of the tubular workpiece and the formation of a longitudinal groove 25 on its surface. in

The task is solved by the fact that the device for manufacturing products by rolling contains a housing and a ring tool placed in it, rigidly fixed on the housing, installed with the possibility of rotation in the bearing unit and made with a cavity, inside which an additional ring tool is installed with the possibility of eccentric displacement relative to the technological axis by an amount equal to the product by 30 of the distance between the points of intersection of the technological axis with the axes of rotation of the ring tool and the additional Ge"! ring tool on the tangent of the angle of installation of the device, and equipped with a shaper, made in cross-section in the form of a rectangular trapezoid with a cylindrical calibration surface, and a spherical top, the wedge section of which is made with an angle at the top equal to twice the value of the above-mentioned "I angle.

З The proposed design makes it possible to obtain shortened sections with longitudinal grooves on the outer surface of the end sections of the tubular blanks.

The essence of the proposed useful model is explained by the drawings, which show:

Fig. 1 - a general view of the device for manufacturing products by rolling in section; "

Fig. 2-4 - former (position 5, Fig. 1); From 50 Fig. 5, 6 - additional ring tool (position 3, Fig. 1); c Fig. 7 - sequence of operation of the device. Initial position;

From" Fig. 8 - sequence of operation of the device. The device with the workpiece inserted in the middle is turned 902 from the original position;

Fig. 9 - sequence of operation of the device. The device with the workpiece inserted in the middle is returned to 1802 from - 15 of the initial position;

Fig. 10 - sequence of operation of the device. The device with the workpiece inserted in the middle is returned by 2702 from its original position; - Fig. 11 - photo of products manufactured at the laboratory installation - end sections of drill rods; 50 Fig. 12 is a photo of an experimental device for manufacturing products by rolling, with the help of which (Ce) the products in Fig. 11 were obtained. o The device for manufacturing products by rolling consists of a body 1, with a ring tool 2 rigidly fixed on it and an additional ring tool C, installed with the possibility of eccentric displacement relative to the technological axis in the cavity 4 formed by the body 1 and ring tool 2. The additional ring tool C is equipped molder 5, made in cross-section in the form of a rectangular trapezoid with a spherical top 6 and a wedge section with an angle at the top formed by the sides 7, equal to twice the angle between the technological axis 8 and the axis of rotation 9 of the body 1 of the device. At the same time, the designations bearing assembly 10, the axis of the additional tool 11, the western conical part of the additional ring tool 12, and the workpiece 13 are introduced. The former 5 can be made as one unit with the additional ring tool 3. The body 1 of the device for manufacturing products by rolling is installed with the possibility of free rotation in the bearing unit 10.

The device works like this.

In the initial position, the additional ring tool C is in the cavity 4 of the housing 1 in the extreme and lower position (Fig. 7). The rotational movement "n" from the electric motor (not indicated in the figures) is transmitted to the workpiece 13, which is clamped, for example, in the cam chuck of a lathe or specialized machine tool.

The device for manufacturing products by rolling provides translational movement "M" in the direction of the workpiece 13. The workpiece 13 enters into plastic contact with the ring tool 2, which also has a rotational movement around the axis 9 together with the housing 1, which is installed in the bearing unit 10. In ring tool 2

The workpiece is reduced to the specified diameter. The tool 2 and the workpiece 13 interact by rolling the working surface of the tool 2 on the machined surface of the workpiece, which allows for small values of contact friction to increase the degree of compression for the transition. The axis of rotation 9 of the ring tool 2 intersects with the technological axis 8 of rotation of the workpiece 13 at point "A" (Fig. 1).

During further translational movement of the device, the workpiece 13 comes into contact with the input conical 7/0 part of the additional ring tool 3, which in the initial position is located in the cavity of the housing 1 in such a way that its axis of rotation 11 is below the axis of rotation 9 of the housing 1. The workpiece, having entered in contact with the western conical part 12 of the additional ring tool 3, raises it in the cavity of the body 1 to the uppermost position. At the same time, the workpiece 13 comes into contact with the forming surface of the additional ring tool C along the entire length of the circumference of its cross-section, that is, along /5 Perimeter.

In this position, the additional ring tool C adopts a working position, in which the axis of rotation 8 of the workpiece 13, the axis of rotation 11 of the additional ring tool C and the axis of rotation "t-r" (Fig. 2) of the former 5 intersect at one point, "B". With further translational movement of the device in the direction of the workpiece, a longitudinal groove is formed on the outer surface of the workpiece with simultaneous calibration of the diameter being processed.

The process of forming a longitudinal groove is carried out in the following way. The workpiece 13 enters the additional ring tool 3, raises it from the starting position to the working position. The former 5 is pressed into the workpiece to a given depth and width using the rocking motion of the wedge section, which it obtains in relation to the processed workpiece due to the fact that the axis of rotation of the additional ring tool is located at an angle c, Fig. 1) to the technological axis. Pressing the wedge section b of the former 5 into the outer surface of the workpiece allows you to form a groove to a given depth. Longitudinal movement of the device ensures the formation of a Z groove of a given length.

The groove is formed both in the middle and across the width. An additional ring tool C (Fig. 5) rotates together with the workpiece. But the axes of rotation of the workpiece 8 and the additional ring tool are located at an angle Ha») zo a. Therefore, the movement of the tool relative to the workpiece being processed has the form of a circular cone with the apex at the point of intersection "B" of the technological axis of rotation 8 of the workpiece 13 and the axis 11 of the additional ring tool 3. At the same time, the former 5 performs oscillating movements relative to the axis of the groove in two mutually perpendicular planes "-

The oscillating movements of the wedge section of the former at an angle со, to both sides of the initial position relative to the "t-d" and "a-a" axes (Fig. 2, 4) form a longitudinal groove on the workpieces both in the middle and across the width, which is explained by the features technology." -

Rotational angular movement of the former 5 to the right - to the left relative to the axis of symmetry of the groove "a-a" at an angle o (Fig. 8,

Fig. 10), allows the former 5 to move the walls of the groove to a given width "v" (Fig. 4) with the side working surfaces 7. The angle of the wedge section of the former, as can be seen from Fig. 4 (view B), is geometrically equal to twice the angle o, between the technological axis and the axis of rotation of the device.

The width of the groove is calibrated by the cylindrical part of the former 5, the radius of which is numerically equal to half the width of the groove "in". The depth of the groove is calibrated by the spherical surface 8 of the former 5. In addition, the workpiece is calibrated on the outer diameter when it passes through the inner cavity of the additional ring tool 3.

Thus, the formation of the workpiece is carried out due to the counter-translational movement of the device and the rotational movement of the workpiece, while the ring tool 2 and the additional ring tool 3, equipped with a former 5, are located at an angle o to the axis of rotation 8 of the workpiece 13. Accuracy of the geometric dimensions of the groove provided by the possibility of an eccentric shift of the additional ring tool C in the cavity of the body 1 of the device. The amount of eccentricity can be determined from - Fig.1. Consider a right-angled triangle ABC with an angle at the top equal to c. From the triangle ВР-АВхидо, where AB is the distance between the points of intersection of the technological axis and the axes of rotation of the ring tool 2 and the additional tool 3, and о is the angle at which the above-mentioned axes intersect. m Progressive movement of the device is performed until a longitudinal groove of a given length is obtained on the outer surface of the workpiece.

Thus, the presence and combination of the above features ensures the expansion of the technological capabilities of the device 22 due to the simultaneous reduction of the outer diameter of the tubular workpiece and the formation of a longitudinal groove on its surface.

Sources of information 1 A.s. Mo1258567, MKY В21ДЗ37/12, dated 09/23/86. published in Bull. Moz5. 2 A.s. Mo841728, MKY В21Д41/00, dated 06/30/81. published in Bull. Mo24. 60 Z A.s. Mo596335, MKY В21Д37/12, dated 03.05.78. published in Bull. Mob.

Claims (1)

The formula of the invention 65 A device for manufacturing products by rolling, containing a housing and a ring tool placed in it, which is characterized by the fact that the ring tool is rigidly fixed on the housing, installed with the possibility of rotation in the bearing assembly and made with a cavity, inside which an additional ring tool is installed with the possibility of eccentric displacement relative to the technological axis by an amount equal to the product distance between the points of intersection of the technological axis with the axes of rotation of the ring tool and the additional ring tool at the tangent of the angle of installation of the device, and equipped with a molder made in cross-section in the form of a rectangular trapezoid with a cylindrical calibration surface and a spherical top, the wedge section of which is made with an angle at the top equal to twice the value of the above angle. that 2 "c) (o) "- " e - and? - sh» - se) (42) 60 b5