SU977119A1 - Die for trimming hollow thin-wall parts - Google Patents

Description

(54) STAMP FOR O5PF, ;; KiI of Hollow Thin-walled

one

The invention relates to the processing of metals by pressure, in particular to dies for trimming hollow thin-walled parts.

Known Stamp for trimming hollow thin-walled parts containing a punch mounted on the bottom plate, two sliders with wedge bevels, carrying dies mounted on the top plate drive wedges that are installed with the ability to interact with sliders 1.

A disadvantage of the known stamp is the low quality of the parts cut off on it.

The purpose of the invention is to improve the quality of pruning.

Decree1 | The goal is achieved by the fact that in the stamp for trimming hollow thin-walled parts containing a punch mounted on the bottom plate, two sliders with wedge bevels, carrying matrices and drive wedges mounted on the top plate, installed with the possibility of interaction with sliders, drive wedges are made different for dl1, and the matrices are installed with the possibility of alternate horizontal reciprocating movement, with at least one-1; TALEY

On the matrix has a stroke by an amount greater than half the size of the part in the direction of movement of the matrix.

FIG. 1 shows a stamp for trimming hollow thin-walled parts, general view;

5 in FIG. 2 - the same plan view; in fig. 3 shows section A-A in FIG. one.

The stamp for trimming hollow thin-walled parts contains the bottom plate 1, the upper plane of which is the base. Punch 2 is rigidly attached to the plate. Sliders 4 and 5 with matrices 6 and 7 rigidly suspended from them are guided in slides 3 on slides 3 and slider 4 have two wedge bevels and slider 5 has one wedge bevel. At the ends of the plate, strips 8 are fixed J5, which serve as stops to the springs 9, which by means of screws 10 return the sliders 4 and 5 to the initial position. On the top plate 1, drive wedges 12 and 13 of different lengths and a spring-loaded clamp 14 are installed. Wedge 12

20 and 13 transmit the force of the press on the sliders 4 and 5 and provide the reciprocating movement of the matrices 6 and 7.

If only a part is cut on the stamp, then the matrix has a straight cutting edge 15. If the stamp does not simultaneously cut and cut holes in the side surface of the part, then the matrix has a straight cutting edge 15 and a curved cutting edge 16 whose contour is equidistant the contour of the corresponding cutting edges of the punch.

The device works as follows.

The trimmed part 17 is mounted on the punch 2. With the press slide down, the clamp 14 presses the part. Uklin 12 interacts with the slider 4 and moves the matrix 6 to the right. In the further course of the press slide, the wedge 13 interacts with the slide 5, moving the matrix 7 to the left. At the same time, the wedge 12 moves the matrix b to the maximum value to the right and cuts the parts by an amount exceeding half the size of the part. Continuing the downward movement of the press slider through the wedge 12 under the action of the springs 10 moves the matrix 6 to the left. At the same time, the wedge 13 moves the matrix 7 to the left to the maximum value and finally cuts the parts. The press slide moves up, the parts are released from the pressing and removed from the punch. The stamp is ready for the next cycle.

The use of the proposed chip allows improving the quality of trimming hollow 5 thin-walled parts.

Claims (1)

Invention Formula A punch for trimming hollow thin-walled parts containing a punch mounted on the bottom plate, two sliders with wedge bevels, carrying matrices and drive wedges mounted on the top plate, mounted with the ability to interact with sliders, characterized in that In order to increase the quality of trimming, drive wedges are made of different lengths, and the dies are installed with the possibility of alternate horizontal reciprocating movement, and at least one of the dies has a stroke on greater than half the size of the part in the direction of movement of the die Sources of information taken into account in the examination 1. USSR author's certificate No. 533458, cl. B 23 D 32/00, 1975 (prototype). Ij gy / -f -h T T irni n fc to + -t