SU704697A1 - Apparatus for bending sheet blanks - Google Patents

Description

(54) DEVICE FOR FLEXIBILITY OF SHEET BLINDS

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The invention relates to the processing of metals by pressure, in particular, to devices for cold bending workpieces,.,. . ; . -:, ..

A device for bending sheet blanks is known, which comprises a bending mandrel mounted on the frame and associated prizi and nOBOgiut tools 1. -: .. ;;,.;

The bending of the edges of the Liita along the inside of it allows the pin to simultaneously increase the power consumption of the device. . Closest to the invention. The technical solution is yetJointo for bending sheet workpieces / containing a table for placing the equipment and bending tools, each in the form of an axis installed inclined to the plane of the table and placed on a Hieft composite roller 2.

However, on such a device, the workpiece is fixed by lateral stops, which does not guarantee a uniform bead height.

The purpose of the invention is to increase the reliability of fixation of the workpiece in the bending process.

This is achieved by the fact that the construction of the drive is equipped with a reverse-drive actuators for a “perfect and perfect” tool, each made

SHLINDRA-, connected with it through a rod with a traverse and two parallel, set-in t, fixed with One ends on the traverse and others on the said axis, as well as a clamp installed on the figures with the possibility of a limited displacement.

FIG. 1 and 2 presents two types of the proposed device; in fig. 3 and 4 section A-A in FIG. 2 at the initial position of the tool and at the starting position, respectively.

The device comprises a table 1 for; the placement of a billet; clamp 2, welded from the profile material, and

Claims (2)

0 bending tool in the form of axles 3 installed on both sides of the table, tilted to its plane Axis 3 with composite rollers 4 placed on them 4. The roller rinks on stages 5, which are fixed to the top by means of cross-arms 6 connected with rods 7, 8 pneumatic cylinders pivotally mounted on the bed 9. Pneumatic cylinders are connected by the pneumatic electrothematics system 10 On the clamp 2, the bushes are fixed 11 mounted on the rods 5 and resting in the initial position on the ledges 12 tons of grams 5 The parallel clamp 2 on the table is provided by the guide ry 13. The angle of inclination of the axes 3 may not exceed 15 because of the risk of jamming of the roller parts. The device works as follows. Sheet billets are placed on table 1 and include pneumatic cylinders 9, the rods.7 of which P1 move the yoke b and the rods 5 connected with them, and the clamp 2 and the bending tool. The clamp 2 is lowered onto the workpiece and, with its own weight, presses it against the stem 1. After that, the bending tool rolls along the edge of the sheet, gradually bends it. During the reverse movement of the rods 7, the bending tool, and after it, the clamping, are lifted, freeing the part. The proposed economic effect of 1.7 thousand rubles in g one. Device for bending sheet blanks containing a table for placing workpieces and bending tools, each in the form of an axis fixed inclined to the plane of the table with a composite roller placed on it, characterized in that billet in the process of bending, it is equipped with actuators of reciprocating movement of the bending tools, each made in the form of a power cylinder, connected to it through the crosshead and two parallel mounted t Fixed at one end to a cross beam ,, other at said axis, and a clip mounted on the connecting rods of the actuators with the possibility of limited movement. Source and information taken into account during the examination 1. USSR author's certificate 360997, cl. In 21 D 5/00, 1971. 2. Authors certificate USSR 532431, cl. B 21 D 5/02, 25.08..75 (prototype).