SU747569A1 - Sheet bending machine - Google Patents

Description

(54) SHEET MACHINE

I

The invention relates to the processing of metals by flooding, namely, to the OLY machines are flexible sheet metal.

The machine can be used for bending cylindrical and conical open-end shells in the production of welded pipes, boilers, and shipbuilding, as well as in the aviation industry, in bending cylindrical and conical single-curvature skins for airbus airplanes.

The structure of the sheet bending machine is known, comprising a frame with stands, a movable yoke, upper and lower work rolls mounted rotatably, support rollers for them l.

The machine is equipped with a mechanism for adjusting the position of the upper and lower support rollers. Adjustment of the positions of the support rollers is necessary to compensate for the deformation of the rolls when bending parts with a straight line generator, as well as for

2

obtaining parts with generatrix of different curvature by creating a certain deflection of the rolls.

The upper roller is attached to the movable yoke. The mechanism for adjusting the position of the support rollers contains a shaft, on the threaded part of which there are wedge mechanisms with operatic rollers. When the shaft rotates, the wedges move progressively and move the support rollers, the roll deflection changes.

A disadvantage of the known construction is that the distance between the support rollers depends on the installation of the wedge mechanisms between them. This does not allow the support rollers to be placed at a minimum distance from each other, and therefore it is not possible to obtain the necessary smooth deflection of the roll, the required accuracy of the product.

The disadvantage is also technological difficulties associated with the manufacture and fit and fit of a large number of

wedge and threaded pairs according to the pattern, characteristic of the base deflection boom and the traverse crossbar under various loads with the need to ensure contact of the support rollers with the surface of the work roll.

It is also not a balance that OLA manufacturing of parts with different curvatures on the heel board is necessary before the manufacture of the required hinges. readjust the wedge mechanisms according to the required curvature size. Practically, manual accuracy is adjusted to the required accuracy.

The purpose of the present invention55 is to simplify the design and improve the accuracy of bending,

To this end, the mechanism for adjusting the position of the upper roll is made in the vice of a plate elastically deformable during bending, hinged at its ends to a movable traverse, which is provided with sliders interacting with the plate installed in it with the possibility of vertical movement under the action of a rotating shaft, and the rotating shaft is installed in The movable traverse is eccentric relative to the axis of rotation. FIG. 1 shows a sheet bending machine, general view; in fig. 2 - section

A-A in FIG. I; in fig. 3 is a section of Es-E in FIG. 2

The machine for bending the sheets contains a base 1 with supports 2, where in the guides there is installed a movable cross-member 3 connected to the rods 4 hydraulic cylinders 5 mounted in the supports 2.

C. The movable cross bar 3 with its ends is hingedly attached to an elastic band in the bending process of the plate 6. The middle part of the plate 6 is hung to the mobile cross bar 3 on screws 7 and nuts 8. Belleville springs 9 are mounted between the nuts 8 and the movable cross bar 3, the plate rests on popzushki 10 , interacting with eccentric necks of shaft 11, which are installed in movable yoke 3. Gears 12. meshing with rails 13 of hydraulic drive 14 are mounted on shafts 11. Top support rollers 15, are attached to plate b. and the upper work roll 16.

On the base 1, the lower support rollers 18 and work rolls 19 are mounted on the plate 17 movable in the horizon plate.

The ends of the work rolls are equipped with articulated devices with a 20, drive

roll rotation. In racks 2, stops 21 of the movement limits of the mobile traverse are installed.

The process of radar flexible lots works as follows.

When the cylinder, for example, a cylindrical part with a constant curvature over the cross section of the upper roll 16 and rolls. 19 are installed parallel to each other at the required distance,

The screws and the stops 2.1 respectively fix the lower position (5th of the work roll with 5 gyrocylinsram 5 rolls 16 raise to the upper position. The edge of the sheet is set on the work rolls 1.9. By means of the traverse, 3 cross-curtains 5 bend the flex; ..: position set. , Chapter 2. Sensors (not shown in the figures) measure deviations from parallelism between the upper and lower rolls. The command from the sensor is transmitted to the corresponding hydraulic drive 14, the rail 13 moves, the rail 12 is rotated, the shaft 11 is moved by the neck of the shaft 11 j; Ku 1O, which abuts the BS plate; Plate 6 bends at the locations indicated by the sensors. This curvature is transmitted by the support rollers K4 work roll 1c. After installing the roll with a given accuracy, the rotation drive of the 20 work rolls turns on, and L1 :: st bends squeezing between rolls ..

After bending the sheet over the entire width, the upper roller 16 is raised hydraulically and the product is removed.

It is also possible to bend parts of a conical shape on the machine; with this, the lower rolls are installed THEN. An angle to each other, or the upper roller, is mounted with screw stops obliquely.

Claims (1)

Invention Formula Plate bending machine, containing the base, the upper poozhuzhu gravers ;. upper and lower rolls. set: Locked with a hair; y: o turn the rotary wheel and connected with the support rollers to the mechanism for adjusting the position of the upper shaft. ka, containing a rotary shaft, about tl and h and y and with that. that, in order to simplify the construction and improve the accuracy of bending, the mechanism for adjusting the position of the upper roll is made in the vice elastically deformable D bending process of the plate, the hinge attached at its ends to the movable traverse, which 574 is equipped with the rotary shaft pop-up assembly installed in it the sliders interacting with the plate, and the rotary shaft is set eccentrically relative to the axis of rotation in the front crossbar. 69 Sources of information taken into account in the examination 1, Collection NIIMASH Forge-and-press Mechanical Engineering, Series C – III Roll Bending Machines, Moscow, 1972, p. 35, FIG. 27 (prototype). - Rig A