SU1586824A1 - Die - Google Patents

Abstract

The invention relates to the processing of metals by pressure and can be used in various fields of machine building and instrumentation. The purpose of the invention is to improve the quality and accuracy of manufacturing parts. For this purpose, the detail 17 is precisely fixed by the safety device (L) 2 at the working position of the stamp. The part 17 remains pressed by the puller 12 to the matrix 14 until L 2 completely extends from the hole of the part 17. For this, L 2 has an emphasis L, and its flange D is made in a stepped, larger step towards the non-working end of L 2. When the upper plate 1 moves down L 2 rests against the abutment L in the puller 12 after it presses the part 17 against the matrix 14. During the course of the upper plate 1 upwards, an additional emphasis 5 fixes the safety device for the large flange step D relative to the upper plate 1. L 2 moves out of the hole of the part 17. Then the stop 5 is pressed by a wedge 19 fixed on the bottom plate 11 and o frees up L 2, which is advanced by the working part M from the puller 12. 2 Cp f-ly, 5 ill.

Description

The invention relates to the processing of metals by pressure and can be used in various fields of thorn and instrument making.

The purpose of the invention is to increase fairness and accuracy in the manufacture of details

FIG. 1 shows a stamp in the open position, general view, prod (sew cut; in FIG. 2 —A-A cut in FIG. I; in the fig — same, stamp in closed position; in FIG. 4, the stamp at break; on figoZ - stamp, top view

The stamp contains the upper plate I, the safety device 2, the spring-loaded spring J and pressed by the screw plug 4, the additional stop 5, the gasket b, the punch holder 7, the spring 1 8, the guide bars 9, the stopper 0 the lower plate MS puller 2, the punch 13, the matrix 14, the punch 15, the screws 16 by means of which the puller 12 is under-. Vishno placed relative to the top plate 15 part 17, the leaf spring 18 and the wedge 19 in

The upper plate for the convenience of manufacture is made up of a composite and includes its own plate, gasket 6 and punch holder 7, the tandem flange D of the catcher 2 makes the working stroke G of the body 2 independent of the material's crushing material. 17 and for thin-sheet materials, for which stamping is the most effective, the working stroke G of catcher 2 is determined by the difference in height between the lower step C of flange D and the stop 5 °. Therefore, stroke G (figv2 and 4) is equal to the same value. appreciate performing th (Ziantsa thickness D stop 5 can be determined from the structural and prochnostn1 1x reasons, regardless of the thickness obrabatyvaemog material that povshgaet reliability shtampao

Placing the stop 5 above the gasket 6 (in the groove on it) allows you to use the stamp as a multi-punch with frequent placement of a punch. Thanks to this placement, access to the safety device 2 from the wedge 19 is provided by the stop 5 for any pacno.no- tion and number of 1: 1 sec. is own

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but the bottom plate 11, rigidly bonded to the matrix 14

The stamp works as follows.

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Detail 17 is placed on the matrix 14 between the guide bars 9 (FIG. 4). At the same time, the front end of the part 17 is advanced so that it does not reach the catcher 2, the Stamp makes a working stroke, the punch 13 punches the main hole in the part 17, and the punch 15 - the technological hole for the catcher 2, In the open position of the stamp part 17 is advanced one the pitch between the guide strips 9, and the supply of the part 17 is limited due to the fact that it rests against the edge of the main hole punched by the punch 13 into the stopper 10 (figooO) When the upper plate 1 moves downwards. The bore hole of the part 17, and then, being pushed into it by the working part M, finally fixes the part 17 o. Then the puller 12 presses the bar 17 to the matrix 14. The springs 8 are compressed, and the catcher 2 moves relative to the puller 12 down and rests against the surface L to the puller. 12o The stepped flange D of the catcher 2 begins to shift upward relative to the stop 5, which continues to move downward along with the top of the die. The punches of the punch 13 and 15 at this time interact with the part 17, performing a punching operation on it. In this case, the lateral surface B of the flange D of the catcher 2 is extended above the abutment 5, which rests against the lateral surface C of the flange D of the catcher 2 5 (figurine ),

During the course of the upper plate 1 upwards, the safety device 2 under the action of the spring 3 rests against the lower surface E of the flange D against the stop 5 and moves together with the upper plate 1, (The puller 12 removes part 17 first from the punches 13 and 14 and then from the catcher 2o - Detail 17 all this time remains pressed by the puller 12 to the matrix 14. Upon further movement of the upper plate 1 upward, the puller 12 moves together with the upper part of the die and stops pressing the part 17 that remains lying on the matrix 4 (

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Part M of the Z catcher is completely placed in the puller 12 (). The wedge 19 begins to interact with the surface H with a bevel K of the support 5, moves it, compressing the spring 18. The safety device 2 stops the interaction with the support 5 and under the action of the spring 3 rests the surface F of the flange D into the gasket 6 of the upper plate Go, the Working part M of the catcher 2, as a result, is again extended from the puller 12 (FIG. 2). The stamp is ready for the next cycle.

This example shows the execution of a punch punch for the manufacture of parts from a sheet, strip material. It is also possible to use a stamp to make parts from a piece blank. Only the method of prefixing the blank is changed. For a piece blank, for example, a stencil (- 4) can be used, if we take part 9 as a stencil. The shape of the working parts of the punches and die matrices can be performed on the workpiece 17 not only by dividing, but also forming operations, as well as their combination

The use of the invention allows to improve the quality and accuracy of the parts obtained in the stamp, since the part remains sandwiched between the puller 12 and the die 14 before the final withdrawal of the punches and the catcher 2 from the part 17, and the removal of the part 17 from the catcher 2 occurs throughout the contour of the hole in the part 17. Thanks to this, the shape of the hole and the surface of the part 17 around it are not distorted. This allows the dimensions of the piece 17 to be precisely made due to fixation by the safety device 2, which fixes the part 17 from displacement in any direction in the plane of the matrix 17. When receiving parts from a tape or strip, densely retracting the catch 2 into the tenological opening of the strip allows to precisely fix it to the working position. x stamp, removing 2 parts in the clamped state from the catcher, allows to eliminate possible distortions of the shape of the hole and the surface of the strip around it. This increases the accuracy of the feed pitch, and no, and manufacturing precision parts.

Thus, since the proposed stamp has no shape distortion from

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in detail 17 and bending of the part 17 itself, the accuracy of the part produced is determined only by the precision of the manufacture and installation of the catcher 2 in the 5 die. Due to the removal of the part from the catcher 2 over the entire contour of the hole and therefore preserving its shape and exact dimensions, the punch has an additional useful property — fixation of the workpiece can be carried out not only by straightforward manufacturing holes, but also by holes provided for in the part 17 itself, which leads to material savings for the manufacture of the part, a reduction in the size of the stamp due to the rejection of additional punches and therefore a reduction in the cost of its manufacture. It is possible to use a piece, having technological holes of the workpiece and after the bulk forming, for example, when trimming the scrap on the part after the bulk forming

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Claims (1)

Invention Formula I. The stamp containing the lower fixed plate, the carrier matrix and. guiding the gas, the upper movable plate carrying the punch holder with punches, the gasket, the catcher in the form and the rod on its non-working end in contact with the spring installed in the upper plate, the puller with holes for the passage of punches and catcher, spring-loaded relative to the upper plate, distinguishing so that, in order to improve the quality and accuracy of parts manufacturing, the stamp is provided with an emphasis extended in the upper part of the stamp with the ability to interact with the catcher's flange, the drive of this emphasis, and the end catcher and The catcher's bottom is made two-stage each, with the spring installed in the upper plate in contact with the flange stage having a larger transverse size, and the stem of the larger cross section has a size larger than the cross section of the hole in the puller 2о Stamp of Po 1, about 1 t and u and y and with the fact that the emphasis placed in the upper part of the stamp is made in the form of a plank with a through-groove groove for the flange of the catcher, which is mounted with the possibility of movement in the direction perpendicular to the direction of the movement of the catcher, and is tucked in this direction 68248 3c Stamp on ppo1 and 2, about tl, which is due to the fact that the drive for moving the stop is made in the form of a copier mounted on the lower plate of the stamp, with the possibility of interacting with the butt end of the hole, Aa W K  L / 7