SU1130964A1 - Process for manufacturing double insulating slot ducts for electric machines - Google Patents

Abstract

PURPOSE OF MANUFACTURING DOUBLE INSULATION NO. 1X SUCTION ELECTRIC MACHINES FROM A SHEET MATERIAL. including the installation of the workpiece in the sliding matrix and the formation on the workpiece in the places of the bend of the box, about tl and h and y and c. By the fact that, in order to simplify the technology, the boxes are made by successively forming an X-shaped and 3-shaped blanks, the ends of the blanks are fixed (from the matrix into a slide, when forming a T.-shaped blank, they form a double loop, blanks on the finished product fix the central parts of their blanks.

Description

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Phi1.1 I The invention relates to a technology for the manufacture of insulating slot boxes for electrical machines and can be used in the electrical industry. A known method of manufacturing insulating grooves of electrical boxes from sheet material, including shaping the duct by means of a vertical punch and sliding matrix 1 J. The disadvantage of this method is the limited technological capabilities of its use, in particular, the inability to manufacture gen ducts from insulating materials, highly elastic, for example, from polyamide films. A method is also known for the manufacture of insulating grooves of electrical machines made of This material, including the installation of the workpiece in the sliding matrix and the formation of loops on the workpiece in the places of bending of the duct 2 J. The disadvantage of this method is complicated technical ones, as for the manufacture of double grooved ducts with a large number of kinks, a very complex tooling drives. The purpose of the invention is to simplify the technology. This goal is achieved by the fact that according to the method of manufacturing double insulating grooving boxes of electrical machines from sheet material, including placing the workpiece in sliding matrices and forming loops on the workpiece in places where the box is bent, make xfop by sequentially forming 1-shaped and E-shaped blanks, the ends of the workpieces are fixed in a spreading matrix, they form a double loop when forming the Th-shaped workpiece, and when forming a 5-shaped 3aroTOBKii and the finished product, The extraction of the central parts of their blanks 4J. FIG. 1 shows the sliding matrix and the formation of a double loop on the workpiece; figure 2 - 1-shaped billet; in fig. 3 - sliding matrix for fixing the central part and the end of the T-shaped workpiece; in fig. 4 -2 figurative workpiece; in fig. 5 - sliding matrix for forming a double groove box; in fig. 6 - formed double insulating slot groove. A method of manufacturing double insulating grooving boxes of electrical machines is carried out as follows. The blank of sheet material at its ends is fixed in a sliding matrix and, when moving its elements, form a double loop. After extraction from the matrix due to the elasticity of the material, a 1-shaped preform (. 1 and 2) is formed. The T-shaped workpiece is fixed in its central part, as well as Y), the fixation of its ends in a sliding matrix, as the elements of the sliding matrix approach each other, forming loops (FIG. 3). After extraction from the matrix, the billet acquires a 2-shaped form due to the properties of an elastic sheet of electrically insulating material (Fig. 4). After this operation, the 2-shaped workpiece is fixed rigidly in its central part and at the ends in a sliding matrix. When approaching parts of the sliding matrix is formed on a 2-shaped billet loop-in places of inflection of the manufactured boxes. After extraction from the matrix, the 2-shaped billet acquires, at the expense of material damage, the form of a double insulating box. The intermediate 7. -shaped and 2-shaped blanks at the production stage can be used independently as slotted boxes of electrical machines. The invention allows to simplify the manufacturing technology of double insulating boxes of electrical machines.

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Claims (1)

METHOD FOR MANUFACTURING DOUBLE INSULATING groove BOXES OF ELECTRIC MACHINES from sheet material, including installation of a workpiece in sliding dies and formation of a heifer on the workpiece at the places of bending of the box, characterized in that, in order to simplify the technology, the box is made by sequential formation of an L-shaped and 2-shaped blanks, the ends of the blanks are fixed in the sliding matrix, when forming a T-shaped blank, they form a double loop, and when forming a 2'-shaped blank and the finished product fix the central parts of their blanks. SU-. 1130964 Fig.}