SU408689A1 - FOUNDATION - Google Patents

Description

The device relates to the field of metal forming, in particular, to equipment for bending sheet blanks.

The ycTpoiiCTBo for bending is known, containing a frame on which a composite bending-molding matrix is placed, having an insert with a shaped working top, punch and alignment, and a drive that performs alternate non-displacement of the tool.

However, on such a device, closed box-shaped parts of Tina with non-planar walls cannot be prepared.

To achieve this goal, the proposed device is equipped with a side nunson, which bends a pre-curved part around the mandrel, and the matrix is fixed on the frame and equipped with working inserts forming the lateral surface of the part.

FIG. 1 schematic shows the proposed device for bending, general view; in fig. 2 is a sectional view IO L-A in FIG. one; FIG. 3 - stages of manufacturing parts.

The equipment for bending consists of a bed /, an inclined-mounted sheet 2, a housing 3, on which are mounted the left-hand cameras 4-6. On slot 7 of the left camera 4, Zakreilen Elaika 8, connected to the speaker holder by 5 columns, cannot be replaced in nanrun Yunkhkh

bushings pressed into the housing 3 (not shown in the drawing).

Nuaneon W rolls in the holder 9 with a nut 11. On the threaded end of the Iouunson there is a cylinder 12 with a lid 13 that holds the piston 14 with the upper ejector 15, which is lifted to the upper position by means of the spring 16.

The nanolite 2 is attached to a matrix 17 with inserts 18-20, a retainer 21 and a guide 22, as well as a plate 23, to which is attached a camera 5, which is used to move in the guide 22 of the lateral side 24, 24 connected to the shaft 25 (Fig. 2 ).

Nenendundural punch 24 is placed on a flexible bevel 26, eo-diepenpa with brush 27 of the chamber 6. The plate 2 is attached to the bottom through cylinder 28 of cylinder 28, in which piston 30 with lower ejector 31 is placed, lowered under the action of spring 32.

The device works as follows. A blank, for example, for a coroic liner, is installed in the clamp fixture 21. Then, from the pneumatic chamber 4, through the rod 7, the plug 10, which produces the molding 33 of the piece 33, is set in motion (Figs. 3, 4). At the beginning of the reversing stroke of the punch 10, the air is pushed into the cylinder 12 and does not displace the piston 14 and the upper ejector 15, which removes the part from the punch 10, fixing it in the cavity of the matrix 17. Then the ejector is removed from the working zone, and introduced into the matrix using pneumatic chambers 5 and 5, the mandrel 26 and the side punch 24, completing the bending of the part (Fig. 5, 6). After removing the mandrel 26 and the side punch 24 from the working area, the piston 30 moves the lower ejector 31, removing the finished part from the die.

Subject invention

A device for bending, comprising a bed on which a prefabricated bending mold matrix is located, having an insert with a shaped working surface, a punch and a mandrel, and a drive that performs alternate movement of the tool, characterized in that in order to manufacture closed box-type parts with non-planar walls, it is equipped with a side punch, bending the pre-curved part around the mandrel, and the matrix is fixed on the frame and equipped with working inserts forming the side surface of the part whether.

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