RU2704342C1 - Device for double u-shaped flanging on workpieces of round shape - Google Patents

Abstract

FIELD: technological processes.

SUBSTANCE: invention relates to metal forming and can be used for double U-shaped flanging on round workpieces. Proposed device comprises casing, face plate, clamp and expanding head composed of cylinder with collar, lower part of which is made in the form of truncated cone, radial movement drive includes carriage with rollers, which can be moved in longitudinal grooves of casing. Besides, there is an axle with a support roller installed on the body.

EFFECT: enlarging technological capabilities of device due to possibility of double U-shaped flanging.

1 cl, 7 dwg

Description

The invention relates to the processing of metals by pressure and can be used to perform double U-shaped flanging on blanks of round shape in the piece or small-scale production of round road signs at enterprises, and can also be used in other industries.

A device is known for shaping cylindrical flanges such as a cover [RU 2253530, IPC B21D 19/12 (2000), published June 10, 2005] comprising a forming mandrel and a rotating rotating roller mounted on a turning and rotary machine. The disadvantages of the known device are the need for additional fastening of the part, the complexity of its alignment, and the inability to perform a double U-shaped flanging on blanks of round shape.

The closest technical solution to the claimed invention selected as a prototype is a beading machine [Description of the invention to the USSR copyright certificate No. 837477, IPC B21D 19/12, published 06/15/1981]. The known device (machine) comprises a faceplate mounted on the base, a clip mounted on the drive shaft and a rolling head with a radial movement drive. The disadvantages of the known device are the ability to perform a double U-shaped flanging on blanks of a round shape, due to the impossibility of removing the blank from the clip. The design of the machine is difficult to manufacture and use.

The main task, to which the claimed invention is directed, is to enable removal of the workpiece with a double U-shaped flanging, simplifying the design of the device.

The technical result consists in the ability to perform double U-shaped flanging on round billets, the ability to freely remove the workpiece after forming the edges, use this device on any radial drilling machine.

The technical result is provided by a device for performing a double U-shaped flanging on round billets, including a faceplate mounted on the base, a clamp and a roll head with a radial movement drive, according to a useful model, the roll head is made in the form of a cylinder with a shoulder, and the lower part is made a truncated cone is mounted on a vertical shaft, the radial displacement drive includes a carriage with rollers moving in longitudinal grooves made in the housing, and a vertical shaft getting a vertical threaded portion of the carriage, wherein the housing is further installed with a support roller axis, the roller surface of the support and the chuck are set so that they are located in one plane.

The plate and clamp are pressed by the tool cone, which allows it to be installed in the spindle of a vertical drilling machine.

The design of the device is illustrated by drawings, where in FIG. 1 - shows a General view of the device, FIG. 2-6 are the steps of flanging the blank of a round shape, in FIG. 7 - a General view of the device without blanks.

The device consists of the following structural elements.

The device includes a housing 1 (Fig. 1), in which a radial movement drive with a carriage 2 is mounted, moving on rollers 3 in a longitudinal groove 4 made in the housing 1. The device is equipped with a vertical drive including a shaft 5 mounted in the vertical threaded part of the carriage 2, on the upper the end of which is equipped with a flywheel 6 for moving the rolling head 7 in a vertical position. The rolling head 7 with a collar 8, with free rotation, is mounted on the lower end of the shaft 5, while the lower part of the rolling head 7 is made in the form of a truncated cone. In the longitudinal direction, the carriage 2 is moved by means of a radial displacement drive including a shaft 9, a flywheel 10. Additionally, an axis 11 is rigidly fixed to the housing 1, on the upper part of which a freely rotating support roller 13 is mounted on the bearing 12. For fastening the workpiece 14 (Fig. 2- 6) a faceplate 15 is used, to which the workpiece is fixed by means of a clamp 16. The faceplate 15 is located on the base 17 (Fig. 1) with a bearing 18. The base 17 is installed separately from the housing 1 on a vertical-drilling bed 19 machine. The rotational moment to the faceplate with the workpiece is transmitted through the tool cone 20, inserted into the spindle of the drilling machine (not shown). The cone 20 also carries out the pressing of the workpiece through the clamp 15 and its fixation on the faceplate 15.

The implementation of the lower part of the rolling head with a shoulder, and in the form of a truncated cone allows you to evenly start the flanging, pressing the workpiece to the support roller, to carry out vertical and horizontal flanging of the workpiece edge. The ability to move the rolling head simultaneously in the vertical and horizontal directions allows the U-shaped flanging of the workpiece during one operation without removing the workpiece, without reconfiguring the device, and design features, such as the support roller on the case and faceplates separately, on the drill stand , allows you to freely remove the workpiece after forming a U-shaped edge, without dismantling the nodes and parts of the device.

The inventive device operates as follows:

Before starting work, a cone 20 is installed in the spindle of a vertical drilling machine, after which a base 17 is mounted on the bed of this machine coaxially to the cone 20, which is fixed to the bed with clamping bolts. Next, the housing 1 is assembled on the machine bed, so that the axes of the rolling head 7, the support roller 13 and the face plate 15 are on the same axis. The fixation of the housing 1 is carried out by clamping bolts to the frame 19 of the drilling machine. By rotating the flywheel 6, the rolling head 7 is moved to its highest position, and at the same time it is retracted from the roller 13 by means of the flywheel 10. A round workpiece 14, for example, of galvanized steel, is mounted on the faceplate 15. Using the standard feed of the drilling machine through the cone 20 with the clamp 16 is fed to the faceplate 15, while the workpiece 14 is positioned so that the edges of the workpiece extend beyond the clamp 16 to an equal distance around the circumference. By feeding the drilling machine, clamp 16 finally presses the workpiece to the faceplate 15. After the preparatory work described, the drilling machine is turned on, through the cone 20, the workpiece 14 begins to rotate. The flywheel 10, the roll head 7 is fed to the edge of the clamp 16 (Fig. 2) and then, by smoothly feeding the flywheel 6, the roll head 7 rolls the edge of the workpiece 14 vertically downward, providing the workpiece with the first bend (Fig. 3). After the passage of the roll-out head 7 to the lowest position (Fig. 4) by feeding the flywheel 10, the collars 8, the roll-out head 7 is started under the roller 13, providing a second bending of the workpiece (Fig. 5). After bending operations, the rolling head 7 is retracted from the roller 13 to the leftmost position (Fig. 6). At the end of the operation, the drilling machine turns off. The clamp 16 is removed from the faceplate 15 by feeding the machine, the finished round billet with a double U-shaped flanging is lifted from the faceplate 15, shifted from the roller 13, and then finally removed from the device.

The invention is versatile, can be used on various types of vertical drilling machines, can be easily installed on them, does not require additional adjustment, which is a significant advantage in the conditions of small-scale or piece production of blanks with double U-shaped flanging at repair facilities.

Claims (2)

1. A device for performing a double U-shaped flanging on round billets containing a faceplate mounted on the base, a clamp and a rolling head with a radial movement drive, characterized in that it contains a housing and an axis mounted on it with a support roller, the rolling head is made in in the form of a cylinder with a shoulder, the lower part is made in the form of a truncated cone and mounted on a vertical shaft, the radial movement drive is made in the form of being able to move in the longitudinal grooves of the carriage body, comprising rollers and a vertical threaded portion, wherein a vertical shaft with a rolling head is installed in said vertical threaded portion of the carriage. 2. The device according to claim 1, characterized in that the surfaces of the support roller and the face plate are located in the same plane.

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