SU1319969A1 - Arrangement for bending edges - Google Patents

Abstract

The invention relates to the processing of metals by pressure and can be used in bending the edges of large sheet blanks. The purpose of the invention is the expansion of technological capabilities. The device consists of a housing feed rollers 1 and 2, bending rollers 15 and 16 mounted on beams mounted on the housing can be rotated. Adjusting the device by moving the rollers 15 and 16 along the beams and turning the beams themselves makes it possible to hem the edges in a required curvature of 3 points. item f-ly, 6 ill. (L with so with so: o So 8 B 5 18

Description

The invention relates to the processing of metal galls with pressure and can be used when bending the edges of large-sized sheet blanks.

The purpose of the invention is to understand the technical / juigical capabilities.

FIG. 1 shows a device for hemming, mounted on a sheet in the original in front of a flexible side, side view; in fig. 2 - device at the moment of bending; on phi 3 - section A -.- in FIG. I: on fng. 4 is a section BB in FIG. 2; in fig. 5 - the device at the time of bending and rolling of the two lower self-aligning rollers; in fig. 6 is a schematic representation of the device m for bending the edges in the shape and shape of the sheet bending process.

The bead for hemming includes two Noday-1x po; 1ika 1 and 2, rigidly seated on shafts 3 and 4, mounted on bearings in housing 5 and connected by means of a gear with a motor 6 wrench. From above and below to the body, 5 axles 7 and 8 1 harnirio are attached to the top 9 II bottom K) lever beams, on the left ends of which are mounted and fixed in the determined position by screws 11 and 12, supports 13 and 14, where they are fixed with the possibility of free axial bearing bending rollers 15 and 16.

To the right ends of the beams 9 and 10 of the axis 17 and 18, the drive 19 of the hierarchy of the beams 19, hinged, is made, for example, in the form of a pneumatic cylinder.

The feed rollers I and 2 are lined with a layer of elastic polymer 20 and 21 to eliminate the damage to the surface of the workpiece 1 for longer contact with it.

To eliminate the inversion of the self-propelled machine under the force of the bending resistance forces occurring on the rollers 15 and 16, or from the ezdzhain of the feed rollers 1 and 2, two lateral directions are mounted on the wearer 22 on the Cornus 5. The roller Nr 23 and 24.

To improve the accuracy of bending on the lower beam 10, two interchangeable self-guides can be used in support 25, two interchangeable self-loaders (|) or 1, their po 266 and 27.

The device for nodgibki edges installed on the sheet and works as follows.

Sheet 22 is placed on the table 28. If the sheet is small, then it is fixed to the table. The part of the sheet e that needs to be pushed is irradiated with this relative to the edge of the table 28. A self-propelled machine for nodgibka edges is installed on the extended edge of the sheet. In this case, the roller 15 mounted on the upper arm beam 9 touches the workpiece on the extreme line of the subframe, and the edge of the sheet rests against the direction of the rollers 23 and 24. The profiling roll IK 16 (or the rollers 26 and 27) feeds

to the workpiece 22 to the touch, io without bending of the workpiece, by means of the drive 19 non-moderated chain. Danpo position of the flexible rollers of the machine characterizes “well. seam io. dwelling.

The position of the rollers 15 and 16 on the beams 9 and 10 is adjusted by moving them together with the supports 13 and 14 along the beams by defining the supports with screws 11 and 12 and placing them along the beams in the dovetail connection, thus providing the necessary rollers relative to the sheet.

After fixing the “bullet position of the rollers 15 and 16 relative to the blank 22, the actuator 19 moves the waves 15 and 16 to the calculated (or empirical) values} with respect to the“ zero potential, bending of the irn this is a blank. Then the engine 6 is turned on, the po; 1iki 1 and 2 start the waddle, the device is moved along the edge of the workpiece, bending it between the rollers 15, 16 and 1, 2 by the determined amount depending on the setting of the rollers 15, 16 and 1.2 each relative to the friend and physicomechanical parameters of the bent workpiece.

This is due to the peculiarities of the flexible and loosely mounted device on the sheet. The device body 5 moves and unfolds in the tension bending process of the workpiece in the rollers when the nose is set:, - stem 1 of the actuator 19 of the tuning 1; 1Y parameter of the rollers before starting the roll. In this position, the device further moves along the edge of the workpiece, and the device is moved down from the workpiece due to the elastic irili of the elastic coating of the feed rollers 1, 2 to the workpiece, as well as through the application of the aptieric elements on the housing 5 - rollers 23 and 24. rollers 15 and 16 will be reinforced with resistance forces such that the consoles of the beams 9 and 10 are turned to Coriou 5, then at the next moment due to the forwarding of the device, uniration of the workpiece to the roller 23 and driving to the edge of the workpiece of the rollers 1 and 2 reverse turn kids body 5 and, accordingly, koneoley beams 9 and 10 with po. 1 and 15 and 16 to the position, the Korvia billet rests on the edge of the second roller 24 and the skew will be cut. Scratching can occur only when bending rigid sheets on a large curvature. Under production conditions, such a case is practically impossible, since rigid sheets are bent on small curvatures.

The weight of the device. For iodibki .IHCTOB up to 3-4 mm of duraluminium alloys will be in the order of 8-10 kg. and the dead weight of the device B means only the elastic deflection of the workpiece beyond the bending zone during the rolling process.

In the case of bending rollers, it is possible to actively regulate the curvature by means of the actuator 19. If you install the iridescent control 19 with the help of program control and sensors of the active counter. W curvature, the process of hemming of the edges can be fully automated, while achieving maximum productivity.

The simplicity of the design makes it possible to quickly fabricate the proposed device using standardized and standard elements — gears and gears, engine 6, drive 14, and if the worm gear is not used from engine 6 on rollers 1 and 2, then to install a small-sized pneumomotor of rotation as an engine, significantly reducing the weight of the structure.

In this way, the present invention will find wide application in various areas of bending production, especially in aircraft manufacturing, due to non-compact dimensions, simplicity of design, mobility, versatility, and automation. In addition, it enhances labor productivity, while not reducing the quality of the processed surface and provides an opportunity to accurately hem the edges.

Claims (4)

1. A device for bending the edges of sheets of blanks consisting of a body, a piece of rollers for bending and feeding a structure along the edge of the workpiece, a roller attachment unit to the body, and a rotation mechanism po. iHKOB, characterized in that, with a view 0 five 0 rasiiren11 technological capabilities. the axes of the feed rollers are rigidly fixed in the housing and are connected with their drive, and the bending rollers are freely mounted on the axes located in the plane passing through the plane of the axes of the feed po, first one of the bending rollers of the SMP1CH along the pox relative to the other, and each: 1st of the bending rollers, in turn, is displaced relative to the feed rollers, and this makes the attachment point of the bending po, 1 to the bodies, made in the form of beams that are hinged on the body so that they can be rotated, holders for the axes of the rollers each n opposite ends of the respective beams independently movable along the beams and the adjusting mechanism peremei1.epi beams. 2. The device according to p. I, from... that it is provided with guide elements for interacting with the edge of the sheet, made in the form of two rollers located on both sides relative to the plane passing through the pox of the rollers. 3. The device according to claim 1. I distinguish that the working surface of the rollers is lined with a layer of elastic polymer. 4. Device for and. 1, characterized in that the oci of the bending roller, located on the side of the feed rollers, is mounted in a Sharinrio holder with the possibility of self-installation, and the bending roller is filled with two parts, each of which 1x is mounted on an axis from its opposite sides relative to niapnnpa. 5V A-A Bb 22 (Pi / e. FIG. five 22 28 Vui-s