Copper bar squirrel cage rotor copper bar grooving and rolling expansion tool and operation method thereof

• Main Authors: ZHANG HONGFEI, SONG JIANCHENG, CAO WEIJUN, ZHANG YAGE, QIAO JUNLI, ZHANG XU, NIE HELIN
• Format: Patent
• Language: Chinese; English
• Published: 14.12.2021
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

The invention discloses a copper bar squirrel cage rotor copper bar slot entering and rolling expansion tool and an operation method thereof. The problems of how to improve the assembly efficiency of a copper squirrel cage and how to ensure the uniform expansion binding force of a copper bar and a slot body are solved. A rotating shaft and an iron core which are assembled in a laminated mode are placed on a positioning rotating table in a vertical mode, a vertical lead screw is arranged on one side of the positioning rotating table, a stepping linear motor is arranged on an upper lead screw nut of the vertical lead screw, and the output shaft of the stepping linear motor is connected with an L-shaped cantilever pressing a copper bar downwards. Another stepping linear motor and a rolling wheel cantilever are arranged on a lower screw nut, after the lower end of the copper bar is manually inserted into an upper end opening of the groove, the L-shaped cantilever is controlled to stretch out of the position over