RU1796312C - Three-roller machine for bending shaped blanks - Google Patents

Abstract

SUMMARY OF THE INVENTION: A three-roll machine for bending profiled billets comprises push and support profile rollers mounted on shafts. At least 2 on a bearing of one shaft are mounted a plate on which the mandrel is fixed. The mandrel contains two rollers. mating in caliber with the corresponding profile roller. The mandrel rollers are mounted by bearings on parallel axes, which are rigidly fixed to the plate. Each roller interacts with one of the shelves of the profiled workpiece. The axes of the mandrel rollers are located on different sides with respect to the plane passing through the axis of the shaft on which they are mounted, and the distance between the projections of the axes of these rollers on the specified plane is less than the radius of each roller. 4 ill.

Description

The alleged invention relates to the processing of metals by pressure, in particular, to constructions of bending three-roller machines.

The purpose of the invention is the expansion of technological capabilities and improving the quality of manufactured parts.

In FIG. 1 shows the proposed machine, General view; in FIG. 2 - node I in FIG. 1; in FIG. 3, section AA in FIG. 2; in FIG. 4 section BB, in figure 2.

The three-roller machine for bending profile blanks comprises a frame 1 with side rolls 2 and an upper shaft 3 installed in it. Support profile rollers 4 are fixed at the ends of the side shafts 2, and a press profile roller 5 for bending profile rolling, for example, a channel, is fixed at the end of the upper shaft 3 6. On the upper shaft 3, a plate 8 is mounted on the bearing 7, in which the axles 9 are fixed at the ends

of which profile rollers 10 are mounted on bearings 11. Moreover, the profile rollers are mounted in such a way that each roller 10 is in contact with only one half of the channel 6, and the distance between the axes 9 of the rollers 10 is less than the radius of each roller 10. To ensure bending close the size-channels in the plate 8 there are a number of holes in which the corresponding channel size of the channel of the axis 9 is installed, and then fixed. Three-roller machine for bending profile workpieces operates as follows. Before the task of the blank (channel), the side shafts 2 are installed with the required clearance with respect to the upper fat 3. After the side shafts are installed in the desired position, the channel 6. is inserted between them so that the ends of the side shelves of the channel are oriented relative to the grooves of the profile rollers 4., 5. and profile rollers

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10 contacted with the corresponding internal shelves of the channel 6. After that, the main drive of the machine (not shown) is turned on and the process of bending-rolling the channel b between the profile rollers 4., 5., is carried out, and the internal shelves of the channel are in constant contact with profile rollers 10 which prevent the deformation of the shelves, each roller of the respective shelf.

After the channel bending process is completed, the side shafts 2 are lowered, the workpiece is released and the finished shell is removed. Then the cycle repeats.

The alleged invention in comparison with the prototype has the following advantages: reduces the complexity of manufacturing by reducing parts such as levers, disc distance elements, wedge half rings, axles, mandrels, etc .; the number of bearings is reduced, the quality of the products obtained is improved.

Claims (1)

The claims A three-roller machine for bending profiled blanks containing push and support profile rollers is installed 5 0 5 0 on the shafts, a plate mounted on the bearing of at least one shaft, a mandrel comprising a roller mated in caliber with a corresponding profile roller mounted on an axis rigidly mounted in the plate by means of a bearing with the possibility of interaction with one of the shelves of the profile workpiece, moreover, in order to expand technological capabilities and improve the quality of manufactured parts, it is additionally equipped with an axis rigidly mounted on the plate parallel to the existing axis, a roller mated in caliber with the corresponding profile roller, bearing, by means of which the additional roller is mounted on the additional axis with the possibility of interaction with another shelf of the profile workpiece, while the axis of the mandrel rollers are located on different sides relative to the plane passing through the axis of the shaft on which they are mounted, and the distance between the projections of the axes of the mandrel rollers on this plane is less than the radius of each roller. foz.f: