SU1228950A1 - Apparatus for successive bending of rings from piece work - Google Patents

Description

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The invention relates to the processing of metals by pressure, in particular to tooling for cold forming.

The purpose of the invention is to increase productivity.

Figure 1 shows the device from the discharge ring, a General view; figure 2 - section aa in figure 1; on fig.Z - section bb in figure 1.

The device consists of a fixed two-part mandrel 1 having steps 2 with working surfaces circumscribed along the radius of bending, and with a support collar 3 for the workpiece D. In the slot of the mandrel between its parts a frame 5 is placed with the possibility of reciprocating movement with spring grippers 6. The frame has a longitudinal slit 7 for moving the blanks and a window 8 for unloading finished rings. Steps 2 are arranged in pairs with an equal step between the pairs and a decrease in the distance between the working surfaces in each subsequent pair to a predetermined size determined by the internal diameter of the rings to be made, with the last pair of steps 2 being made console. Above the steps 2, the punches 9 are symmetrically placed, fixed on the slider 10 in steps, at an equal distance from the steps 2.

The device works as follows.

. When the frame 5 is moved to the left, the blank 4 is also shifted to the left until

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an emphasis is placed on the flange 3, after which the spring b is gripping the workpiece and presses it against the upper flange. Then the frame with the workpiece is moved to the right by the step size, i.e. the workpiece is transferred from the loading position to the position of the first pair of stages 2, after which the slider 10 is lowered and the punches 9 carry out the first

10 bends the ends of the workpiece 4 and keeps it from moving in the slot 7 as the frame 5 moves to the left after the next workpiece. Then the slider 10 with the punches 9 rises to its original position,

5, the frame 5 moves to the right and the springs b move the workpiece from the first position to the second, and a new workpiece is placed in its place, and the cycle is repeated, with the second and

The 20 successive positions are sequentially bending the workpiece from the ends to the middle until the ring is obtained.

As a result of repeated movements of the research institutes of the frame 5 and the slider 10, the device is simultaneously loaded with blanks, consistently bending them from the ends to the middle at all working positions and resetting the bend of that ring into the window 8 of the frame 5.

As a result, there are blanks at all positions at all positions, which ensures that the nocjre ring of each stroke of the slide is obtained and

JJ consequence, improved performance.

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FIG 3

Editor A. Koeorie

Compiled by A. Guz Tehred I. Popovich

Order 2334/8 Draw 783 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Proofreader C, Lugov

Claims (1)

DEVICE FOR SEQUENTIAL BENDING OF PIECES OF PIECES TOVOK, containing bending elements and a mandrel made of two parts, characterized in that, in order to increase productivity, it is equipped with a frame with spring-loaded grips for workpieces placed between the parts of the mandrel, the bending elements are made in the form of two steps converging in the direction of the workpiece feed rows fixed at the same distance from one another punches located symmetrically to the feed direction, and the mandrel is made with steps similar to the steps of the rows of punches, while the number of Finger grabs corresponds to the number of steps in the rows of punches. SU ..,. 1228950 fig.!