SU1512695A1 - Arrangement for parallel even multiplicity in sheet pressworking of parts - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular, to devices for parallel even multiplicity of sheet metal stamping of parts. The aim of the invention is to reduce the metal consumption by reducing the dimensions, as well as improving the performance with low-waste stamping without inter-part jumpers and the quality of parts during sequential stamping. The device contains two groups of punches installed in one row: in one group punches 5 for cutting parts along a closed contour, in the other punches 6 for cutting parts along an open contour. The punches in the group are located at a distance of 2a, where a is the cutting step. The distance between the extreme punches of the groups is 3a. There is a side stepper knife 7 of a length a ^. N, where N - the number of parts cut in the p ddu. In the device for low-waste punching without inter-detail jumpers in adjacent rows, there are two punches 8 for cutting along the open contour of one piece and segments of the other, placed between them at a distance of 2a. The first punch 8 in the direction of supply of the workpiece is set at a distance of 2.5a from the outermost punch 6 of the group of the adjacent row. In the stamp for sequential punching, the punches 9 for punching are located in the feed direction of the workpiece at a distance a behind the dies 8, at a distance a ^. N before the punches 8 and at a distance a ^. N in front of punches 5 and 6. 2 Cp f-crystals, 2 ill.

Description

315126

The invention relates to the processing of metals by pressure, in particular to sheet metal stamping of parts, and can be used in various fields of machine building, instrument engineering and other industries.

The purpose of the invention is to reduce metal consumption by reducing the size of the device, as well as reducing productivity with low-waste punching without inter-detail jumpers and improving the quality of parts during sequential punching.

FIG. 1 schematically shows a device for parallel six-fold sheet stamping without interdetal jumpers of parts with two openings; in fig. 2 - the same, for four-time stamping of parts with one hole.

The device contains a matrix 1 with guiding strips 2 and 3 located on it. In the upper part of the device (not shown), an operating element is mounted consisting of punches 5 installed in one row parallel to the feed direction of the workpiece 4 to cut parts along a closed contour and punches 6 for cutting out parts along an open loop of jumpers obtained by cutting details along a closed loop by punches 5. The punches are arranged in two groups. In one group there are placed punches 5 for cutting parts along a closed contour, and in the other, punches 6 for cutting parts along an open contour. The number of punches in each group is the same. The punches in the groups are placed at an equal distance from each other 2a, where a is the cutting step. The distance between the extreme adjacent punches 5 and 6 of different groups is Za. The device has a side stepper blade 7, the length of which is 4 a for four times and 6 a for six times stamping. In adjacent rows, punches 8 are installed for cutting along the open contour of one component and segments of another, placed at a distance of 2a between them. The number of punches 8 is equal to the number of punches in the adjacent row group. The distance between the first in the feed direction of the workpiece punch B and the extreme punch 6 of the group of the adjacent row is 2.5a. Punches are also available.

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9 for punching, located in the direction of supply of the workpiece at a distance of a for and at a distance of 8 dies before the punches as well as at a distance of a. N before dies 5 and 6.

The device shown in figure 1, works as follows.

The blank 4 is fed until it stops. The protrusion 10 of the bar 2. At the first transition, the knife 7 cuts off the side edge of the blank 4. The punches 9 pierce six holes in each row. Ffa each subsequent transition knife 7 cuts off the side edge. After supplying the workpiece to step 6a on the second transition, the punches 9 pierce twelve holes, the punches 5 cut three parts along a closed contour, on the third and subsequent transitions, the punches 9 pierce twelve holes, the punches 5 cut three parts along a closed contour from the canvas of the workpiece and three parts of the open loop of the strands obtained after cutting parts from the canvas.

The device shown in figure 2, works as follows.

The blank 4 is fed into the protrusion of the strip 2. At the first transition, the knife 7 cuts off the side edge of the blank, the punches 9 pierce through a row in three rows of two holes. On each subsequent transition, the knife 7 cuts off the side edge. After supplying the workpiece to step 4a in the same rows at the second transition, the punches 9 pierce four holes, the punches 5 cut down two parts; on the third transition, the punches 9 pierce four holes, the punches 5 and 6 cut down two parts and the punches 9 pierce two holes in two adjacent rows; on the fourth transition, punches 9 pierce four holes in three rows, punches 5 and 6 cut down four parts, and in two adjacent rows punches 9 pierce three holes, puncheon 8 separates one part along an open contour and cuts off another detail In each row, four and four holes are punched in each row, two parts are cut in a closed and two parts in an open loop, and in two - two parts are separated in an open loop and two parts are cut off.

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Formula tf 3 in regards

Claims (3)

1. A device for parallel even multiplicity of sheet punching of parts containing a work item consisting of several installed in one row parallel to the feed direction of the blank of punches for dividing operations, as well as a means providing the possibility of supplying the workpiece to step a, where a is the cutting step, and n is the number of simultaneously detachable parts in a row, which is due to the fact that, in order to reduce the metal intensity by reducing the dimensions , punches for separating parts from the workpiece are arranged in a row by two groups with the same number of punches in each group, while the group includes punches of the same name at a distance equal to each other 2a, and the distance between the outermost rows located For the same group dies. 2. A pop device, 1, characterized in that, in order to increase productivity with low-waste stamping without interdetail jumpers, working element d 5 0 5 0 6 relatively punched in at least one adjacent row of punches for separation operations, the punches for separating parts from the workpiece made in the form of punches for separating along the open contour of one part and segments of another part placed between them at a distance of 2a, and in an amount equal to the number of punches in the group of an adjacent row, while the first in the feed direction of the workpiece is set to the distance of an odd number of cutting steps, divided in half, from the extreme punch of the adjacent group Of course, 3. The device according to PP. 1 and 2, in order to improve the quality of parts in sequential stamping, punches for separating a part of the workpiece in the form of punches for punching are located in the feed direction of the workpiece at a distance of separating along the open contour of one part and segments of another and at distance an in front of other punches for separating parts from the workpiece. ,, mouth 2a ha .2a