Fixture for steam turbine generator rotor coil vent hole machining

Abstract

The invention discloses a fixture for steam turbine generator rotor coil vent hole machining. Two rotor coils are placed flat on a left die holder and a right die holder respectively, and are separated and positioned by a positioning check block. A lateral pressing air cylinder piston rod stretches out and draws back to drive a movable fulcrum pin shaft of a left oscillating bar and a movable fulcrum pin shaft of a right oscillating bar to motion, so that the left oscillating bar is driven to swing around a fixed fulcrum pin shaft of the left oscillating bar, and the right oscillating bar is driven to swing around a fixed fulcrum pin shaft of the right oscillating bar. A limiting block on the left side and a limiting block on the right side limit an opening of the left oscillating bar and an opening of the right oscillating bar to be consistent in size. The left rotor coil and the right rotor coil are tightly pressed or loosened at the same time through a lateral pressing head. An upward pressing air cylinder piston rod stretches out and draws back to drive an upward pressing head to move in a reciprocating mode along a positioning check block guide hole, so that the left rotor coil and the right rotor coil are loosened or tightly pressed in the vertical direction. The fixture for the steam turbine generator rotor coil vent hole machining is high in automation degree, high in work efficiency, strong in universality, simple in structure, reliable in operation, long in service life, and capable of greatly mitigating the labor intensity for an operator.

Description

Technical field: [0001] The invention relates to a special jig for machining ventilation holes of a steam turbine generator 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 coils per unit 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 number of ventilation holes on a single coil There are about 100 to 200 pieces. It can be seen that there are many kinds of coils and the amount of ventilation holes is huge. At present, the processing of the ventilation holes of the rotor coil by the relevant domestic production plants adopts the method of placing the rotor coil vertica...

AI Technical Summary

Problems solved by technology

Using manual mechanical clamping method, the operator has high labor intensity, frequent movements, and low production efficiency; using hydraulic clamping method, there is a hidden danger of oil leakage. Once oil leaks, it will cause pollution to the coil surface and affect the quality of the coil.

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