Vertical processing method for internal key grooves of rigid magnet yoke

Abstract

The invention discloses a vertical processing method for internal key grooves of a rigid magnet yoke. Three magnet yoke sections are combined into a whole through a screw; firstly, an inner circle, anupper side air guide belt plane and a lower side air guide belt plane are processed on a vertical lathe; and then an external T-shaped tail groove plane and T-shaped tail grooves are processed in a boring machine. The inner circle, the upper side air guide belt plane, the lower side air guide belt plane and the external T-shaped tail groove are used for alignment and positioning, and the internalkey grooves are processed in the three magnet yoke sections together. The problem that processing equipment for the internal key grooves of the rigid magnet yoke is large in limitation is solved, theproblem of staggering in processing of the internal key grooves is solved, a powerful guarantee is provided for subsequent magnet yoke assembling, meanwhile, the vertical processing method has the advantages of being simple and convenient, high in processing precision and the like, and the processing period is shortened. The vertical processing method is suitable for manufacturing the rigid magnet yokes of all pumped-storage power generation motors, and has very high popularization and application value.

Description

technical field [0001] The invention relates to the field of generator motors, in particular to a vertical processing method for key grooves inside a rigid yoke. Background technique [0002] The yoke is one of the most important parts of the generator motor, which plays an important role in the operation of the generator motor. The stability of the yoke structure (meeting frequent start and stop, working condition conversion and other normal, transitional and special working conditions) , directly affect the safe and reliable operation of the unit. As the capacity of the hydroelectric generator motor increases and the operating water head of the unit becomes higher and higher, the strength of the laminated yoke cannot meet the requirements for stable operation of the unit. Therefore, high-head and large-capacity generator-motor units all adopt rigid yoke structures. A yoke with a rigid structure is usually stacked by five 60mm thick high-strength steel plates, which are c...

AI Technical Summary

Problems solved by technology

At present, the internal keyways of rigid yokes in China are generally processed by CNC gantry milling (the yoke section is placed horizontally), which requires relatively high processing equipment and has relatively large processing limitations.

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