SU1696180A1 - Die for cutting rolled steel - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular, can be applied to the blanking production of machine-building enterprises, and can be used when cutting rolled products into dimensional blanks. The purpose of the invention is to improve the quality of the products and increase the durability of the stamp. After the bar is fed into the die, the slider 12 lowers and acts on the lever 13. The lever 13 through the groove 16 through the axis 14 acts on the levers of the clamping mechanisms. The lever 7 with the movable knife 8 is pressed against the top of the rolled metal. Simultaneously with. By this, the lever 13, by means of the axis 15, rotates the lever 10 around the axis and presses the clamp 11 against its lower part. 4 il.

Description

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The invention relates to the processing of metals by pressure, in particular, to the blank production of engineering enterprises, and can be used when cutting rolled products into dimensional workpieces.

The purpose of the invention is to improve the quality of the products and increase the durability of the stamp.

FIG. 1 shows a stamp for cutting steel, top view; in fig. 2 is a section A-A in FIG. 1; in fig. 3 - the same, the original position; in fig. 4 shows a section BB in FIG. one.

A stamp for cutting a rolled stock includes a housing 1 with a fixed knife 2. In the housing 1 an axis 3 is fixed, on which a lever 4 is rotatably mounted with a clamp 5 fixed in it. The stamp also includes a clamping mechanism for the cut off portion of rolled 6, made in the form of 1 lever 7 with movable | m knife 8, connected by means of axis 9 with lever 10 with clamp 11 of rolled steel.

In case 1, a lever 13 is interlocked with the slide 12 of the press, forming together with the lever 4 a mechanism for clamping the main part of the car. One end of the lever 13 via the axis 14 is pivotally connected to the free end of the lever 4 as well as to the lever 7, and the other end of the lever 13 is pivotally connected by means of the axis 15 to the lever 10. The lever 13 has the freedom to move in the horizontal direction due to the presence profile groove 16.

The die is driven by the slide 12 of the press interacting with the lever 13. The lever system is returned to its initial position by a lift 17 and a spring-loaded buffer 18.

The rental B is fed into the space between the fixed 2 and movable 8 knives and clamps 5 and 11, fixed in the levers 4 and 10 retracted to the rest position. After that, the lift 17 is turned off and the press slide 12 is turned on. During the downward movement of the press slide 12, it acts on the lever 13, which, through the groove 16, interacts with the levers 4 and 7 through the axis 16 and the lever 4, together with the clamp 5, rotates around the axis 3 counterclockwise, pressing the main part of the rental 6 to the fixed knife 2, and the lever 7 with the movable knife 8 is pressed against the upper cut-off part of the rolling stock 6. At the same time, the lever 13 through the axis 15, turning the lever 10 around the axis 9, presses the clamp

11 to the bottom of the cut-off part of the rental 6, Thus occurs the clamping of the main and cut-off parts of the rental 6.

With the rotation of the levers 13 and 10 center

the axis 15 not only descends, but also moves in the horizontal direction, since the center of rotation of the lever 7 coincides with the center of the axis 14; consequently, when it is lowered, the center of the axis 15 is removed and the distance

between the centers of the axes 14 and 15 is increased. To compensate for said elongation, the groove 16 in the horizontal direction has a size larger than that in the vertical direction. With further

As the slide 12 moves downward, the levers 13, 7 and 10 with the axles 9 and 15 rotate around the axis 14. With this clamping force of the main and cut parts of the rental 6, increases until the workpiece begins to separate from the rental 6. The cut of the workpiece occurs,

As the slide 12 travels upward, the moving system of levers is returned to its original position in reverse order.

when the lift 17 is turned on: first, the end of the lever 13 is lifted, as a result of which the levers 10 and 7, turning counterclockwise, release the cut piece and it is removed from the die under its own weight through a window in the housing 1. Then, under the action of the buffer 18, the end of the lever 4 rises, rotating around the axis 3, and thus frees the rental 6 for its supply again.

The stamp work cycle is complete, and it is ready to repeat the cycle.

Claims (1)

Claims for cutting a rolled steel containing a body mounted therein a fixed knife, a clamping mechanism for the main part of the rolled stock with a clamp, a clamping mechanism of the cut part of the rental made in the form of a pivotally mounted on the case by means of an axis of the lever with a movable knife and associated with it by means of an axis of the clamped lever, characterized in that , in order to improve the quality of the products and increase durability the stamp, the clamping mechanism of the main part of the rolling is made in the form of two levers, on one of which the said clamp is mounted, and which is pivotally connected at one end through an axis to the body on the fixed knife side, and the other end with a second lever, made drive and with a profile groove at the end on the side of the first lever, pivotally connected by an axis installed in the indicated slot and in the first lever with a clamp, with a supporting movable knife lever of the clamp mechanism the cut part of the rolled joint pivotally connected at the other end po 7 / j Aa 12  tv: FIG. i axle means with bearing clamping lever of the mechanism for clamping the cut-off part of the car. / 15W Phage.1 15 x 5-5 12 Fal. four