SU1189539A1 - Die for stepped bending of sheet bars with holes - Google Patents

Description

The invention relates to machining, ke metals of pressure, in particular, to the tooling for cold sheet forming.

The purpose of the invention is to raise 5

quality products.

Fig, 1 shows a stamp for step bending sheet blanks with holes, general view, starting position; in fig. 2 is a section A-A Yu in FIG. one; in fig. 3 - stamp at the end of the operating cycle, longitudinal section ..

The stamp contains the top plate 1, the bearing punch 2, pressed by the spring 3, the clamp 4 with a through end 15 groove 5 depth corresponding to the thickness of the workpiece 6, and a copier 7. On the bottom plate 8 a composite matrix is installed in the form of a fixed part 9 20 of 10, the shape of the angle of the product, in which one side is horizontal and facing the side of the clamp 4 ,. and the other, inclined, is made in response to the shape of the movable part 11, the transition zone between the shelves in height, installed with the possibility of reciprocating movement in the vertical plane due to the press of the pusher and punch 2 connecting it with the buffer (not deputy). , and equipped with a latch 12 with a diameter of the cylindrical part of the hole in the workpiece 6, On the fixed part of the matrix 9 built-in block 13 ₃₅

flush with the horizontal section of the working surface 10, pressed by the spring 14 to the copier 7 and provided with a clamp 15. The axes of the latches 12 and 15 are parallel to each other. On the ₄₀ fixed part 9 of the matrix made the stop 16 for pads 13.

The stamp works as follows.

In the initial position, the plate 1 with the booster 2, the clamp 4 and the copier 7 occupies the uppermost position.

At this moment, the block 13 is pressed in the longitudinal direction by the spring 14 to the extreme right position up to the stop 16.

Sheet billet 6 with holes installed on the clamps 12 and 15, centering and fixing its position. The workpiece 6 in its initial position rests on the end surface of the longitudinal part of the matrix, the horizontal section of the working surface 10 of the fixed part of the matrix and the end surface of the pad 13. ·

The stamp works as follows.

When lowering the plate 1, the clamp 4 is installed above the workpiece 6, the copier 7 interacts with the pad 13, and the punch 2 presses the end of the workpiece to the movable part 11 of the matrix. Upon further lowering of the plate, the punch bends the workpiece according to the shape of the working surface 10, while the copier moves the block 13 with the lock 15, providing a calculated reduction in the center-to-center distance at each moment of deformation. When this clamp 4 ensures the fit of the workpiece to the surface 10 until the end of the flexible. „'·

Moving pads 13 with latch 15, adjustable copier 7, provides for the receipt of products and with a given center-to-center distance.

1189539

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Claims (2)

STAMP FOR STEPPED FLEXIBLE SHEET PLUGS WITH HOLES, containing a punch and a clamp mounted on the top plate, mounted on the bottom plate, a composite matrix, made of a stationary part, and a part moving in the direction of the axis of the stamp, as well as latches with parallel axes, one of which is installed on the movable part of the matrix, characterized in that, in order to improve the quality of the products, it is equipped with a block that is mounted on the fixed part of the matrix and is mounted on the upper plate Those copier interacting with the block, the clamp is made with a through groove on the working end to accommodate the workpiece, and another clamp is installed on the block. 00 with SL with with I 1189539 2