| 摘要 |
A method of producing grate structures includes forming of a workpiece from elements placed tightly parallel against one another (rods, windings of a spiral or closed rings), their arc winding in a protective atmosphere with seams of a predetermined length locally in predetermined points that determine a character of a pattern of a grate and a strength of connections of elements; a subsequent stretching with a required coefficient. It is possible before stretching to bend the welded wire in a direction which is perpendicular to the placed rods, for example, by rolling and after the stretching to bend the place for obtaining a surface with a double curvature. During stretching it is possible to use auxiliary elements which limit a coefficient of stretching in predetermined regions of the structure for obtaining grate structures of a complicated shape. The device is proposed for automatically producing of flat and volume workpieces of different types of grate structures (FIG. 15) fences, poles, and other small arcitectural forms. The proposed device allows to obtain products in a wound form, which reduces required manufacturing areas, facilitates storage, transportation and allows to irreversibly wind out the structure on situ without a preliminary checking of sizes. The proposed invention allows to exclude the use of transverse connecting elements.
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