Lifting and rotating precision indexing device

Abstract

The invention discloses a jacking rotation precision indexing device. According to the jacking rotation precision indexing device, an oil cylinder rises, and a guide seat moves upwards, so that large-scale rotor support vertical ribs and magnetic yokes are lifted and separated from the supporting surface of the supporting frame to the required height, and the large-scale rotor support vertical ribs and the magnetic yokes act on a bearing support through weight; a jacking rotation precision indexing device body is rotated to rotate, and a rotary encoder is rotated to record the rotating angle degree of the workbench; and the oil cylinder is descended, and the guide seat downwards moves, so that the large-scale rotor support vertical ribs and the magnetic yokes are arranged on the supportingsurface of the supporting frame again and separated from the bearing support, so that the rotating angle indexing of the large-scale rotor support vertical ribs and the magnetic yokes is completed. The jacking rotation precision indexing device has the advantages of being simple in structure, large in bearing capacity, high in universality, high in rotating angle precision, capable of moving, lowin cost and capable of replacing a large-tonnage numerical control static-pressure rotary workbench to complete the accurate rotating angle of a large-scale workpiece.

Description

Technical field: [0001] The invention relates to a precision indexing device for jacking and rotating. Background technique: [0002] Vertical ribs and yoke processing of hydro-generator rotor bracket refers to the processing of all circumferentially evenly distributed main force ribs on the rotor bracket connected to the yoke, grooves, and all circumferentially uniformly distributed axial Ts on the yoke connected to the magnetic poles. Groove. At present, the method commonly used in China is to place the vertical ribs and yoke of the rotor bracket on the CNC static pressure rotary table for alignment and fixation, and through its precise indexing, turn the vertical ribs of the large rotor bracket and the magnetic yoke to the surface to be processed. The processing position that requires angular precision is then processed with a large floor-mounted CNC boring and milling machine. For the processing of the vertical ribs and yokes of the rotor brackets of large hydroelectri...

AI Technical Summary

Problems solved by technology

For the processing of the vertical ribs and yokes of the rotor brackets of large hydroelectric generators, the processing size is large (the maximum distance between the processing part and the center exceeds 6 meters), and the vertical ribs and yokes of the large rotor brackets are heavy (nearly 500 tons). Due to the influence of geological conditions, environment and other factors, the unit has few domestic and foreign projects and fierce competition. If the traditional large-scale floor-type CNC boring and milling machine is used for processing, it needs to be equipped with a corresponding CNC static pressure rotary table that can be accurately indexed, and the manufacturing cost is high. , takes up a lot of space in the factory building, and the utilization rate of equipment is low

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