Resin pressing curved surface numerical control machining clamp for performing precision forging on blade tenon root

Abstract

The invention discloses a resin pressing curved surface numerical control machining clamp for performing precision forging on a blade tenon root. A clamp box cover is connected with a clamp box body through an eccentric pin shaft; parts of the clamp box body and the clamp box cover, which are contacted with a blade back, a blade basin and the tenon root, are made of resin materials, so that a blade can bear impact and vibration which are caused by a cutting force of a cutter during machining, and the blade can be machined stably and is deformed difficultly; and the positioning precision is improved. According to the clamp, the efficiency of machining an aircraft engine blade is improved, and the machining precision of the clamp can be improved, so that the problem about clamping during blade tenon root precision forging is solved. The clamp has a simple structure and is convenient to mount and high in positioning precision; and the clamp can be assembled and disassembled frequently without influencing the positioning precision. The clamp is used for machining the tenon root of the aircraft engine blade and tenon roots of similar thin wall blades, such as a working blade of a gas turbine, a guide blade and the like.

Description

technical field [0001] The invention relates to a fixture for positioning and processing precision-forged blade tenon roots on curved surfaces, in particular to a resin-compressed curved surface numerically controlled machining precision-forged blade tenon root fixtures. The invention belongs to the technical field of aeroengine blade processing. Background technique [0002] Aeroengine blades are typical complex curved surfaces with high degrees of freedom. Thin-walled blades have the characteristics of bending, twisting, and sweeping. They require high surface accuracy and good aerodynamic performance; the high-precision characteristics of blades make their processing efficiency low. Moreover, quite high requirements are also put forward for the tooling and fixtures before blade processing. In order to improve the processing efficiency, some relatively small blades can be processed by the high-efficiency method of precision forging. The existing precision forging technol...

AI Technical Summary

Problems solved by technology

[0006] In order to avoid the shortcomings of the existing technology and overcome the problems of large positioning error, insufficient stability and large clamping deformation caused by the positioning of the tenon root of the precision forged blade through the curved surface of the blade body during processing, the present invention proposes a resin compaction Curved Surface NC Machining Precision Forging Blade Tenon Root Fixture

The purpose is to enable the blade to withstand the impact and vibration caused by the cutting force of the tool during processing, so that the processing of the blade is stable and not easily deformed, and the positioning accuracy is improved; the fixture can not only improve the processing efficiency of the aero-engine blade, but also improve the processing accuracy , to solve the clamping problem when processing precision forging blade tenon root

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