Hydraulic fixture used for machining precision forging blade tenon root

Abstract

The invention discloses a hydraulic fixture used for machining a precision forging blade tenon root. The fixture consists of a fixture box cover part in contact with a blade back and a fixture box body part in contact with a blade basin; by transferring pressure of liquid in a hydraulic cavity of the fixture to other parts, a blade is clamped, so that the clamping force applied on the blade is more uniform and stable; when the hydraulic fixture is used for clamping, the blade can be clamped and loosened only by screwing a pressing regulation rod in and out, the operation control is convenient, and the damage to the blade is reduced. According to the hydraulic fixture used for machining the precision forging blade tenon root, the machining efficiency of the blade of an aviation engine can be improved, the machining precision of the blade of the aviation engine is also improved, and the clamping problem brought about when the precision forging blade tenon root is machined is solved; the fixture is simple in structure, convenient to install and high in positioning precision; the positioning precision is not affected even when the hydraulic fixture is dismounted for a plurality of times; and the hydraulic fixture is also applicable to the machining and application of the other types of blades.

Description

technical field [0001] The invention relates to the technical field of aero-engine blade processing, in particular to a hydraulic clamp used for precision numerical control processing of precision-forged blade mortise roots. Background technique [0002] The engines widely used in the aviation industry are mainly turbofan engines. The engine blades are thin-walled and have complex free-form surfaces. Thin-wall structure and light materials such as titanium alloy are mostly used for the thrust-to-weight ratio, which not only makes the processing efficiency of the blade lower, but also puts forward quite high requirements on the tooling and fixtures before blade processing. In order to improve processing efficiency, relatively small blades can be processed by precision forging. For the two parts of blade body and blade root in blade processing, the existing precision forging technology can only meet the required precision of blade body , No need for CNC machining, but to meet...

AI Technical Summary

Problems solved by technology

However, the pre-tightening force generated by the eccentric pin shaft cannot be precisely controlled during the use of the fixture, and the clamping degree cannot be adjusted, and the clamping force is not stable enough. It cannot achieve optimal positioning and clamping evenly for blades of different sizes, especially when processing large For thin-walled blades, the vibration is more obvious, which will affect the processing quality of large blades, and the clamping speed is slow, and the accuracy is not easy to guarantee after disassembly and assembly, which is not conducive to repeated use

Images