SU899200A1 - Corrugated article production method - Google Patents

Description

(54) METHOD OF MANUFACTURING CORRUGATED

one

The invention relates to the processing of metals by pressure, and in particular to methods of making corrugated articles from sheet material and, in particular, can be used in forming the corrugated zone of the magnetic circuit of electrical machines.

A known method of corrugating sheet material, according to which the workpiece is subjected to preliminary corrugation of alternately flexible each side of the corrugation, fixing the corrugated part of the sheet and subsequent calibration, and with the aim of increasing the height of the corrugations and simultaneously reducing the radii of radii in their tops, one single corrugation is bend outside of the stamping tools one.

However, this method does not provide multi-corrugated products with a mutual fit of the specified number of corrugations over their entire height.

A known method of manufacturing corrugated products by applying a compressive force along the workpiece, providing the PRODUCTS

the loss of stability of the workpiece and the upset of the corrugations 2.

This method allows to obtain corrugated sheet products with a mutual fit of two internal surfaces of one corrugation along its entire height, however, it does not provide the necessary accuracy of the corrugations both in height and in pitch; obtaining corrugations with a ratio of height to pitch up to ten and more; flexible multi-corrugated

Q products with mutual adherence of the side surfaces of a given number of corrugations along their entire height.

The purpose of the invention is to obtain multi-corrugated corrugations with a tight fit of their side surfaces over their entire height and an increase in accuracy.

The goal is achieved by pre-shaping the latter in a row of corrugations into a trapezium with a small base width equal to

2 (j to the distance between the rows, and the approach of the corrugations is carried out by the order with the formation of right angles at the tops of the corrugations.

Claims (2)

FIG. 1-11 show the sequence of operations for manufacturing multi-corrugated corrugations; in fig. 12 - corrugated product obtained by this method. FIG. 1 shows the initial position of the sheet stock 1 and the shaping tools 2-7 before starting the process. The area of the workpiece 1 for presetting the number of corrugations is preformed by a system of bending punches 2 and 3 (Fig. 2). Then, the system of bending punches 2 and 3 moves in the direction of the final molding zone and the calibration of the corrugations, carrying the workpiece 1 with itself (Fig. 3). At the end of the stroke, the system of bending punches 2 and 3 releases the pre-deformed section of the workpiece 1, and the clamp 4 presses the workpiece to the moving system 5 (Fig. 4), which moves the workpiece by the size of one step of the multi-corrugation (Fig. 5). At the same time, the bending punch system returns to its original position. Next, the punch 6 presses the edge of the preformed section of the workpiece 1 against the fixed stop 7, and the system of bending punch 2 and 3 pre-forms the section of the workpiece to obtain a subsequent row of corrugations, while the clamp 4 releases the workpiece, allowing it to move to the deformation zone (Fig . 6). Thus, the first preformed workpiece section is clamped with a system of bending punches 2 and 3 on the one hand and a punch 6 and a fixed stop 7 on the other. By moving the system of bending punches 2 and 3 in the direction of squeezing the pre-g y sh, j 1H /./ H w (irwxi phage / molded portion of the workpiece 1, the first forming and calibration of the first row is performed with the specified number of corrugations, and the moving system 5 returns The initial position (Fig. 7). The repeated interaction of the shaping tools and the workpiece (Fig. 8, 9, 10, I) provides the shaping of multi-corrugated products., Invention Form A method for manufacturing corrugated products from sheet metal Material including preforming and converging of corrugations by applying compressive force along the workpiece, characterized in that, in order to obtain multiway corrugations with a tight fit of their side surfaces over the entire height and increased accuracy, with the preliminary formation of the latter in a series of corrugations the shape of a trapezoid with a small base width equal to the distance between the rows of corrugations, and the corrugations approach each other in a straight line with the formation of right angles at the corrugations. Sources of information taken into account during the examination 1. USSR author's certificate number 415066, cl. B 21 D 13/00, 04/27/71. 2. USSR author's certificate number 425698, cl. B 21 D 13/10, 03.24.72. (prototype). WV - rv4 / vi FIG. five FIG. 6 five 7 - vvvgi 16 FIG. 8 t 3 Black / white Fig.Z FIG. / ( ir i and Ф4 / г. // J-j