Switchable abrasive belt driving spindle box for moving blade grinding machining

Abstract

The invention discloses a switchable abrasive belt driving spindle box for moving blade grinding machining. The switchable abrasive belt driving spindle box comprises a first abrasive belt and a second abrasive belt. The power transmission path of an abrasive belt rotating servo motor is from an abrasive belt rotating motor gear to a spline shaft gear, a spline shaft 15 drives a spline shaft sliding gear set to rotate, a first transmission shaft gear or a second transmission shaft gear is driven to rotate, and then a first abrasive belt or a second abrasive belt is driven to move through a coaxial first abrasive belt shaft synchronous belt wheel or a second abrasive belt shaft synchronous belt wheel. One side of the spline shaft sliding gear set is connected with a shifting fork mechanism; a roller is mounted at the front end of a shifting fork of the shifting fork mechanism; the roller moves up and down in an outer circular groove of the spline shaft sliding gear set along with swinging of the shifting fork; and the abrasive belt switching servo motor is connected with the abrasive belt driving spindle box body bearing seat. The two abrasive belts can be driven through the abrasive belt driving spindle box, free switching of the abrasive belts in the grinding process is achieved under the action of the shifting fork mechanism, and it is guaranteed that grinding of blade tips under curved surfaces with different curvatures is automatically completed.

Description

technical field [0001] The invention relates to a switchable abrasive belt-driven headstock for moving blade grinding and belongs to the technical field of gas turbine moving blade processing equipment. Background technique [0002] The gas turbine moving blade is a vulnerable part in the gas turbine unit. The damage of the moving blade is mainly due to high temperature ablation, which causes the blade tip to be damaged and deformed. The damaged moving blade greatly affects the working efficiency and service life of the gas turbine unit. Therefore, it is necessary to Regular maintenance. The main task of maintenance is to remove the damaged blade tip, re-weld the same material, and then grind it to the same shape as the original bucket before the repair. Since the shape of the blade tip section is a non-linear curve, and the entire rotor blade profile is also a non-linear curved surface, the current grinding process is mainly manual operation. Absolutely the same shape. T...

AI Technical Summary

Problems solved by technology

This processing method is extremely dependent on the experience of the operator, which is low in efficiency, labor intensive, time-consuming and labor-intensive, and high in cost.

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