Sand blasting protection device for inlet edge and exhaust edge of blade

Abstract

The invention discloses a sand blasting protection device for an inlet edge and an exhaust edge of a blade. The device comprises a base, wherein hinge supports are fixedly connected to the four corners of the upper end face of the base through bolts; symmetrical opening and closing hinges are arranged on the upper end faces of the two hinge supports located at the same end of the base; connectingcolumns are arranged on movable supports of the opening and closing hinges; protective rubber strips are fixedly connected to the lower ends of the two connecting columns located at the different endsof the same side of the base; a blade body frame is fixedly arranged at the position, located among the four hinge supports, of the upper end face of the base; and a supporting groove consistent witha blade body of the blade in shape is arranged in the upper end face of the blade body frame. According to the device, the inlet edge and the exhaust edge of the blade can be quickly clamped and protected; after sand blasting is finished, glue residues do not need to be cleaned, and nondestructive testing is guaranteed to be not affected; sand blasting of a plurality of workpieces can be achievedat a time instead of being completed one by one originally; and the production cost is effectively reduced, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of blade sandblasting, in particular to a sandblasting protection device for blade inlet and exhaust edges. Background technique [0002] For many blades, when grinding the blade body, it must be ground and polished according to the reference points on the air inlet side and the exhaust side. When sandblasting is performed after the body is polished, the air inlet and exhaust edges have been polished and cannot be sandblasted together with the blade body, so it is necessary to protect the air inlet and exhaust edges within 3mm during sandblasting. It adopts the form of pasting many layers of tapes to protect the intake and exhaust sides so that they will not be sprayed during sandblasting. This protection method is inefficient and time-consuming, and often cannot be cleaned when removing the tapes, which results in There are many false defects when doing non-destructive testing. Contents of the invention ...

AI Technical Summary

Problems solved by technology

[0002] For many blades, when grinding the blade body, it is necessary to grind and polish according to the reference points on the inlet side and the exhaust side, so that the inlet side and the exhaust side should be polished first when grinding and polishing, but when When sandblasting is performed after the body is polished, the air inlet and exhaust edges have been polished and cannot be sandblasted together with the blade body, so it is necessary to protect the air inlet and exhaust edges within 3mm during sandblasting. It adopts the form of pasting many layers of tapes to protect the intake and exhaust sides so that they will not be sprayed during sandblasting. This protection method is inefficient and time-consuming, and often cannot be cleaned when removing the tapes, which results in There are many false defects when doing non-destructive testing

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