Milling head for rotor winding vent of turbogenerator

Abstract

The invention discloses a milling head for a rotor winding vent of a turbogenerator, and two milling cutters of a milling hole disk are arranged on a milling hole arbor, and are separated by a separating bush to determine spacing. Two chamfer disk milling cutters are arranged on a chamfer main shaft, and are separated by a separating bush to determine spacing. A milling hole main shaft, the chamfer main shaft and a main electric motor are all installed on a revolution body. The cutting rotational speeds of the milling cutter of the milling hole disk and the chamfer disk milling cutter are transmitted by the respective gear of the main electric motor. The oscillation of the milling cutter of the milling hole disk and the chamfer disk milling cutter is controlled by a servo motor, and is transmitted to the revolution body through a servo decelerator and gears, thereby driving the milling cutter of the milling hole disk and the chamfer disk milling cutter to oscillate around the axial line of the revolution body in an interleaving way; the milling and the chamfer processing of the winding vent is realized. The invention has high cutter service life, high degree of automation, good universality, good airtightness, short working time of operation assistance and abrasion resistance of track surface.

Description

technical field [0001] The invention relates to a milling head for ventilation holes of a turbogenerator rotor coil Background technique [0002] The turbo generator rotor coil is one of the most important components in the turbo generator set. The number of rotor coils, the length of the coils, the width of the coils, the thickness of the coils, and the number of ventilation holes are different for units with different power generation. The number of main coils of each machine is about 300-700, the length of the coil is about 5-10 meters, the width of the coil is about 28-50 mm, the thickness of the coil is about 5-15 mm, and the ventilation holes on a single coil The number is about 100 to 200. It can be seen that there are various types of coils and a huge amount of vent hole processing. In addition, the processing quality of the coil ventilation holes is also very important, which will directly affect the heat dissipation effect of the unit. At present, most of the co...

AI Technical Summary

Problems solved by technology

The cam transmission mechanism is used, which has poor versatility and complex mechanical structure. The operator needs to do a lot of auxiliary work, and the corresponding cam needs to be replaced, and the cam working surface will wear out after long-term operation, which will affect the processing quality of the coil ventilation hole and reduce production efficiency.

The linear feed movement of the hydraulically driven tool has good versatility, but the mechanical structure is complicated. The linear feed of the tool is guided by a sliding guide rail, and there is a gap in the cooperation of the sliding guide surface. Under long-term working conditions, the guide surface will wear and affect the coil. The processing quality of the ventilation hole, this method needs to manually adjust the position of the stopper and control the stroke of the tool

Due to the hydraulic drive, there will be hidden dangers of oil leakage, which will cause pollution to the coil surface and affect the quality of the coil

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