Reliable cage rotor

Abstract

The invention relates to a cage rotor (1, 62, 72, 82) for an electrical machine (50, 52, 54, 56), comprising: a rotor stack (2, 206, 207, 208) along The axis of rotation (6) extends in the axial direction (3) from the first axial end (4, 163, 173, 183) to the second axial end (5, 164, 174, 184) and has a a lamination (7) layered in the axial direction (3); a short-circuit ring (8) which surrounds the axis of rotation (6) and which is arranged on the first axial end (4, 163, 173, 183); and A further short-circuit ring (9) which surrounds the axis of rotation (6) and which is arranged on the second axial end (5, 164, 174, 184), wherein the short-circuit ring (8) and the further short-circuit ring (9) Comprising a first material, wherein the laminations (7) each have a first stamping (10) forming the edge of a slot (16) of a rotor plate stack (2, 206, 207, 208) from the first The axial ends (4, 163, 173, 183) extend to a second axial end (5, 164, 174, 184), wherein the laminations (7) each have a second punching (11), which Forms the edge of a channel (12, 126) extending from a first axial end (4, 163, 173, 183) to a second axial end (5, 164, 174, 184), wherein the first punch The punched part (10) is located in the outer region (13) of the laminate (7) and the second punched part (11) is located in the inner region of the laminate (7), the channel (12, 126) is made of the first material The filling material (15) is filled, and the filling material is integrally connected with the short-circuit ring (8) and the other short-circuit ring (9). The invention relates to a motor comprising a cage rotor (1, 62, 72, 82), Method for manufacturing cage rotors (1, 62, 72, 82), and sets (60, 70, 80) of electric machines (51, 52, 53, 54, 55, 56).

Description

technical field [0001] The invention relates to a cage rotor, an electric machine comprising the cage rotor, and a set of electric machines comprising at least one first electric machine with a cage rotor. Furthermore, the invention relates to a method for producing a cage rotor. Background technique [0002] Such a cage rotor is known from DE 199 01 195 A1. There, the problem of the tendency for cracks to form at the transition between the short-circuit ring and the rotor rod to occur during the one-piece production of the rotor rod and the short-circuit ring by the aluminum die-casting process is solved. To solve this problem, spacer elements are cast into the die-cast cage windings at the left and right ends between the rotor lamination and the short-circuit ring. In DE 199 01 195 A1, the problem of the lack of ventilation of the rotor is also solved in that the laminations of the rotor lamination have cooling holes for forming cooling channels extending axially through...

AI Technical Summary

Problems solved by technology

There the problem of the tendency for cracks to form at the transition between the short-circuit ring and the rotor rod to occur during the one-piece production of the rotor rod and the short-circuit ring by the aluminum die-casting process is solved

Images