SU648307A1 - Die for piercing slit-like openings - Google Patents

Description

(54) STAMP FOR PUNCHING

PETROLEVAL HOLES

The invention relates to a process tooling for cold sheet forming and forging and can be used in machine-building.

A well-known punching die has a moving plate, a non-dry punch holder with plate-shaped punches, a frame, a guide puller, which is spring-loaded relative to the movable plate, and a fixed plate that carries a composite matrix with a connector cavity passing through the cutting edge of the punch, having a large length 1.

In the well-known stamp, the direction of the punches relative to the die is not accurate enough, which reduces the durability of the stamp and the quality of the products being processed, and, moreover, the change of punches is difficult in the well-known chip.

In the described glass, in order to increase the durability of the chip and the quality of the products being processed, the puller clamp is made with protrusions on the surfaces facing the matrix and to the punch holder, the punch holder is made alternating with protrusions, and in the latter are located the corresponding puller projections.

and the matrix is made with holes that guide the appropriate vystush of the puller and are bounded on one side with the surface lying in the plane of the matrix connector.

To simplify the non-realistic stamp, the punch holder is made up of at least two parts with a plane of the connector that coincides with the plane of the connector of the die.

The described stamp is depicted on the screen.

FIG. 1 - the general TYPE of the described stamp; in fig. 2 section BB; in fig. 3 - view along the arrow .Л; in fig. 4 - section BB; in fig. 5 - section G-Y.

Described Stamp For punching rectangular holes, the frame I is fixed to the top plate 2, a composite punch holder consisting of two parts 3 - 4, resting on a wedge 5 with an adjusting screw 6.

One part of the punch holder 4 is fixed on the axis 7, on which the spring 8 is worn.

Claims (2)

Between the parts of the punch holder 3 and 4 there is a punch 9, made in the form of a plate with protrusions and depressions, moreover. the length of the protrusion is equal to the length of the punched hole, and the length of the depression is equal to the pitch of the punched holes along the width of the punched metal. The punch 9 in the punch holder 3, 4 is fixed with screws 10, and the clamp-remover consisting of parts II - 12 is inserted into frame I and fastened with screws 13, one part. 11 clamp removers are spring-loaded springs 14. On the side of the clamp remover 11 -12, which is worn to the punch holder with alternating depressions 15 and protrusions 16, protrusions 17 are made, the input sh, i in the hollow 15. On the side of the clamp remover that is the matrix, protrusions 18 are made, directed in the holes 19 of the matrix, consisting of parts 20, 21 and having a gap equal to the length of all the punched holes at the same time and located transverse to the direction of the feed material. The matrix is inserted into the composite matrix holder, the parts of which 22, 23 are fastened with screws 24 and fixed on the plate 25. The punch holder is spring-loaded with springs 26 and oriented in the direction of the clamp-remover, which in turn is oriented with respect to the frame 1. The plane of the matrix connector passes through the cutting the edge 27 of the punch 9, having a greater length. The frame 1 is made with restrictive stops 28, placed in the grooves 29 of the clamp-remover 11 -12. The work of the proposed stamp for punching rectangular holes is carried out as follows. A blank in the form of, for example, stainless steel tape is fed to the plane of the die 20,21. During a press slide process, the plate 2 with the frame 1 fixed on it, with the stripper 11, 12 inserted into it and the punch holder 3, 4 with it is pushed down by the punch 9, while the protrusions 18 of the pressing puller L 1 -12 are all the time in the openings 19 of the die 20, 21, and the upper projections 17 are located in the depressions 15 of the punch holder 3, -4. The puller 11, 12 presses the workpiece to the plane of the die 20, 21, and the punch punches the holes. When the press ram moves upward, the pincer II, 12 removes a punched tape from the punch 9, and at the same time, the ram moves down, limited by grooves 29, which contact their surfaces with the lugs 28 of the frame 1 under the action of springs 26. Then the cycle repeats. For quick replacement of the punch 9, the screw 10 is unscrewed and part of the punch holder 4 is pivoted on the axis 7 by the action of the spring 8, freeing the punch 9 to replace it. Claim 1. Punching hole for slot-like holes containing a movable plate, a bearing holder with punches in the form of plates, a frame, a guide clamp, spring-loaded relative to the movable plate, and a fixed plate supporting a composite matrix with a plane of the connector passing through the cutting edge of the plug having a greater length, characterized in that, in order to increase the durability of the stem and the quality of the products being processed, the puller is made with protrusions on the surfaces facing the die and to the punch the holder, the punch holder is made with alternating protrusions and depressions, and in the latter the corresponding protrusions of the puller are arranged, and the matrix is made with holes guiding the respective protrusions of the puller and bounded on one side by the surface lying in the plane of the matrix connector. 2. Stamp under item 1 ,. characterized in that, in order to simplify the changeover, the punch holder is made of a composite of at least two parts with a plane of the connector coinciding with the plane of the connector of the die. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 404531, cl. B 21 D 28/14, 1971. nineteen Wrigle Type A 20 Y / y 5 bb fu2.4