A precision forging blade tenon root and front and rear edge processing jig

Abstract

The invention discloses a tenon root and front and rear edge machining clamp of a precisely-forged blade. The tenon root and front and rear edge machining clamp is composed of a pouring box, a supporting arm, a pressing plate and a rotary table. The blade is located in a cavity of the pouring box through assembly of the pouring box and the blade. The molded surface of a blade body is clamped through low-melting-point alloy solidification, and the clamp is prevented from generating clamping injuries to the molded surface of the blade body. The pouring box is pressed and fixed through the pressing plate, pressing force is evenly transmitted to the pouring box through the pressing plate, the pouring box is pressed, and clamping deformation of the blade cannot be caused. To-be-machined parts of a tenon root and front and rear edges of the blade are located outside the pouring box, and numerical control machining of the tenon root and the front and rear edges of the blade is completed through one-time clamping. According to the clamp, clamping errors and the number of tools are reduced, meanwhile, the machining technological process of the precisely-forged blade is optimized, and the machining precision and machining efficiency of the precisely-forged blade are improved. The clamp is suitable for efficient and batched numerical control machining of aero-engine precisely-forged blades and can also be used for machining of tenon roots and front and rear edges of rolled blades and other precisely-formed blades.

Description

technical field [0001] The invention relates to the technical field of numerical control machining of aero-engine blades, in particular to a precision-forged blade tenon and a front and rear edge machining fixture. Background technique [0002] Blades are the key components of aero-engines, and their processing quality directly affects the performance of the engine. As a high-efficiency and low-cost process, precision forging has been widely used in the manufacture of new-generation aero-engine blade blanks. The blade is mainly composed of the blade body profile, front and rear edges and tenon roots. The quality of the blade body profile of the precision forged blade is guaranteed by the forging die, and the forming precision is high, and the blade body profile does not need secondary processing after forming; limited by the current precision forging technology, the tenon and front and rear edges of the blade cannot be precision forged. Forming requires CNC machining. Whe...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of difficult clamping and positioning, easy deformation of the blade, and poor machining accuracy brought about by the structural characteristics of precision forging blades such as small blade body, thin blade, complex profile, and poor blank consistency, the invention proposes a precision forged blade tenon root And front and rear edge processing fixtures; the clamping force of the fixture is applied to the pouring box, the blade is fixed by solidified low-melting point alloy, and the force on the blade body profile is uniform, which will not cause blade clamping deformation and pinching; blade tenon and front and rear edges The part to be processed is located outside the pouring box, and the CNC machining of precision forged blade tenon and front and rear edges is completed in one clamping

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