SU547258A1 - Stamp for bending parts - Google Patents

Description

one

The invention relates to the field of metal forming and can be used, for example, for bending sheet material such as boxes: boards, panels: doors, relay bases used in the manufacture of communication equipment.

Known universal bending stamp containing interchangeable working tools. When the size of the manufactured part is changed, the tool changes.

Known bending stamp 2, the working tools of which are made in the form of double prismatic crackers, symmetrically movable in the plane of bending of the material. On these stamps, parts can be engraved, one size of which varies. Setting such strains is difficult.

Known installation for flexible boxes, precast punch which is made of separate elements with a length of 30-300 mm, collected through 1 mm.

The disadvantages of this design are the impossibility of bending large dpins, the complexity of the design and manufacture, the greater complexity during readjustment in connection with

lengths are flexible, as well as inconvenience in operation and storage.

Also known is strain 4 for bending parts of predominantly box-type, containing working tools, the cross sections of which have a certain length or width.

These strains allow the manufacture of parts having dimensions corresponding to a specific length or width of the tool. In order to manufacture a specified number of parts with dimensions smaller than the length or width of the tool, at least one working tool is made with grooves located along its length or width at distances corresponding to the specified dimensions of the parts.

FIG. 1 shows the proposed strain general view in FIG. 2 - the same, side view; FIGS. 3-5 are a sequence of technological operations for bending the walls of parts.

Claims (1)

The universal strain contains a punch 1, a matrix 2, on which grooves 3 are made, which are located at a distance corresponding to the given dimensions of Apex and a head corresponding to the maximum wall height. The principle of bending, shown in FIGS. 3-5, is as follows. Initially, the two sides of the part are flexed to the required size (see Fig. 3) and then, depending on the shape of the part 4, it is set as shown in Fig. 4 or Fig. 5, and in the process of bending, previously bent walls enter into the punch slot dies. The workpiece base is carried out using universal stops. The grooves in the punch and the die are made according to a diagram obtained by systematizing the dimensions between the walls of different parts. The number of grooves depends on the nomenclature. Should be 1-2 mm more for free entry of the walls of the part in the process of bending. Formula of the invention A stamp for bending of parts of predominantly box-type, containing working tools, the cross sections of which have a certain length or width, similar to the manufacture of a specified number of parts with dimensions smaller than the length or width of the tool, at least one working tool is made with grooves located along its length or width of the distances corresponding to the specified part dimensions y. Sources of information taken into account in the examination; 1. Foygelman, A.A. Album of designs of universal stamps, blocks and assemblies for cold stamping, M, 1965, p. 57, 60-64. 2 USSR author's certificate 99034, M.C.L., B 21 B 22/02, 11.10.52, 3, Installation for bending boxes with a punch punch. Information sheet, M, 1971, No. 0420-61.2 C, TsNTI, Search 4, Malov A.N. Technologists of Cold Forming, Orbiting, 1958, pp. 220-222 (prototype). shishch | yshishishun P fr 4FlFT WIFWimffl 1 at Figg FIG. five Fig.h