SU84913A1 - Copy bending machine for sheet material and, in particular, for parts of the aircraft skin - Google Patents

Description

The copying and bending machine relates to equipment designed to bend blanks made from sheet material, in particular, aircraft trim parts.

Rolling bending machines for sheet material and, in particular, for parts of aircraft trimming, equipped with three forming rolls, one of which can continuously change its position during operation using a copying device and pneumatic actuators, are known.

However, the known machines are complex in their construction, in addition, they cannot be bend parts of the skin of modern aircraft with small radii of bends.

The proposed machine does not have these disadvantages. This is achieved by using two-sided drive for rolls of small diameters and large lengths when rolling elements of a common with small bending radii. In order to achieve a convenient removal of finished products from a bending roll with a small bending radius, it is movable in the vertical direction of the yoke, carrying the bending roll, made in its upper position rotatable relative to an axis parallel to the axis of the roll.

The linear guides for the vertical movement of the yoke in their upper part are curved at an appropriate angle.

The beds of the support rolls are mounted one above the other with their mounting surfaces.

Scenes are used to control the two-way traverse.

FIG. 1 shows a general view of a copy-bending rolling machine; in fig. 2 is a cross-section of the machine rolls.

The main part of the flock that forms the sheet is the rolls, of which the lower / support rolls. They do not move vertically, but can be moved apart in parallel or at an angle to each other on special beds. The third roll 2 in the process can

.N984913

Continuously change its position using the device. The machine allows roll changes. When long distance gauges are required, cladding with a small bending radius, rolls of small diameters and large lengths are installed and a two-way drive is used, accessible from the electric motors through a gearbox, gear system, enclosed in nodes V, VI and Vfl (Fig. 1) and shaft, located inside the flock, for aligning the drive at both ends. The curvature of the moldable; the joint is changed by lowering or upper roll 2, and the taper by changing the lower rolls by non-parallel mounting.

The deflection of the sheet is dried by the upper roller, pressed by the pneumatic guide shown in the node V /// {fig. one). The piston unit Vllf and the lever 4 of the unit IV press the upper yoke (unit ///) with the roller 2 mounted on it to the sheet being bent. To rotate the traverse in its upper position, its guides for the vertixylg lop) HepeMenieiiiiH have a bend at the appropriate angle. Pneumatic drives of the upper roll are available in steel on each side at the nodes / and //. The lever 4, which presses the upper roll against the sheet, is connected at the other end with a copy roller in the node IX, which, by rolling around the iio shab: oiu, provides the required deflection to the sheet. Copier templates are attached to the toothed racks on each side of the machine, and the rails are joined by the gears and move in coordination with them. When working without a template, the movement of the upper crosshead and the sheet bending wheel is restricted by a screwdriver of the adjuster knot enclosed in node X, driven by an electric motor and holding a copy roller. To automatically disable the copiers from the crossbar when it is idle vertically, the coupling of the levers 4 to the copra is accomplished through the wings 5.

For the convenience of removing the finished molded sheet e of the bending roll 2 with a small bend radius of the yoke, which can move the turntable and carrying the bending roll, can also rotate around an axis parallel to the roll. Bottom support rolls / mounted on the bed of the IRI through the bed. To increase the rigidity of the beds, they mount their mounting surfaces one on another, and for the rolls of the lower bed, when the rolls are moved apart, the upper bed is provided with windows.

PREFACE I and 3 ABOUT

Claims (5)

1. A copy-rolling-bending rolling machine for sheet material and, in particular, for parts of aircraft trimming, equipped with three forming rolls, one of which can continuously change its position during operation of the roller and pneumatic actuators, which differ By the fact that, in order to ensure the possibility of using rolls of small diameters and large lengths when rolling these skimming items with small bending radii, the rolls are equipped with a two-way drive wheel. 2. The form of copying and blasting machine according to Mr. 1, characterized in that, in order to achieve a convenient removal of finished products from a bending roll with a small bending radius, movable in vertical direction of the traverse, carrying the bending roll, is made in its upper position rotatable from an axis that is parallel to the axis of the roll. 3. The form of the copying-bending machine according to claim 2, characterized in that, in order to turn the crosspiece in its upper In position, the rectilinear guides for vertical movement of the traverse in their upper part are made curved at an appropriate angle. 4. The form of implementation of the copying and nesting machine according to paragraphs. 1, 2 and 3, characterized in that, with the aim of increasing the rigidity of the beds of the backup rolls, they are arranged one upon another with their mounting surfaces, the upper bed being provided with windows for the passage of the roller supports of the lower bed. 5. The form of copying and bending machine on PP. 1, 2, 3 and 4, characterized in that, in order to automatically disconnect the copiers from the traverse at all vertical idle runs, the scenes are used to interface the copiers with the levers controlling the movements of the traverses.  3 -№ 84913