Combined structure of rotor short-circuit ring and its processing method

Abstract

The invention discloses a rotor short-circuit ring combined structure and a processing method thereof. The rotor short-circuit ring combined structure comprises a rotor core, two porous ring sheets, aplurality of conductive copper sheets, a wire ring, two proper circular rings and two short-circuit rings; the porous ring sheets are respectively connected in series with two ends of the rotor core;after the wire ring is connected with the conductive copper sheets one by one in a stringed manner, the conductive copper sheets are inserted into the rotor core and the porous ring sheets, the two ends of each conductive copper sheet protrude out of the axial cross section of the rotor core; the conductive copper sheets are arranged in a perfect circle through the cooperation with the constraintof the proper circular rings; and the short circuit rings are integrally formed at the two tail ends of the rotor core and the conductive copper sheets through a casting process. By means of the composition of the components, the short-circuit ring structure is integrally formed by combining the conductive copper sheets, so that troubles in the production of short-circuit rings in the prior art are eliminated.

Description

technical field [0001] The invention relates to the technical field related to casting technology, in particular to a combined structure of a rotor short-circuit ring and a processing method thereof. Background technique [0002] In the design of the motor, in addition to using the change of the AC phase to generate a changing magnetic field, it can also use the changing surrounding magnetic field to induce the intermediate rotor to generate a magnetic field. In this structure, the rotor does not need to be wound with coils, and does not need carbon brushes, etc. The structure greatly simplifies the structure of the rotor. see Figure 11 , 12 As shown, for the squirrel-cage rotor of an induction motor (single-phase and three-phase), a conductive copper sheet 92 (or rod) is interspersed in an iron core 91 composed of stacked silicon steel sheets, and the two ends are connected by a short-circuit ring 93 to form a squirrel-cage rotor. Cage type, induced by the surrounding ch...

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Problems solved by technology

[0004] The manufacturing method of the above-mentioned short-circuit ring 93 has great disadvantages, because the middle of the stack of short-circuit ring copper sheets 931 may not be tightly bonded, there must be gaps, and each piece of short-circuit ring copper sheet 931 must be welded once, which is quite a process. Slow, unfavorable for industrial manufacturing and unstable quality, poor yield and efficiency

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