Profile self-adaptive clamp and using method thereof

Abstract

The invention provides a profile self-adaptive clamp and a using method thereof. Soft magnetic material powder is utilized to serve as a contact face for clamping parts with curved surface profiles. The soft magnetic material powder is powder capable of flowing and deforming at the normal state. After an upper die base and a lower die base are fixedly arranged, an upper wrapping layer and a lowerwrapping layer are attached to the upper contact face and the lower contact face of a clamped part, the shape of the profile of the clamped part is changed, after an upper electromagnetic coil and a lower electromagnetic coil are powered on, the soft magnetic material powder is changed into a hard block with the fixed shape when being affected by magnetic force, and the clamped part is clamped firmly. After the upper electromagnetic coil and the lower electromagnetic coil are powered off, magnetic force disappears, the soft magnetic material powder changes into the original state, and the upper die base and the lower die base are separated to take off the clamped part. The profile self-adaptive clamp is mainly used for machining and manufacturing blade curved surface profile parts, the clamping face is self-adaptive along with the profiles of the blade curved surface profile parts, and the problems that the parts containing titanium alloy blades deform due to clamping, and the surfacesare damaged by clamping, and are polluted can be effectively avoided.

Description

technical field [0001] The invention relates to the design and manufacture of tooling fixtures, in particular to the design and manufacture of tooling fixtures for curved surface and profile parts, in particular to a profile self-adapting fixture and its use method. Background technique [0002] The blade is one of the most important components in an aero-engine. The geometric shape and size of the blade determine the working performance of the blade, and the blade surface is the main part of the blade, which determines the aerodynamic performance of the blade. The fuel consumption of the engine plays a large role. [0003] At present, the tooling fixtures used in blade processing are all fixed by alloy casting blocks, or are purely mechanical clamping structures of hard clamping type and floating clamping type. Although the alloy casting block is used for fixing, although the deformation is slight and there is no surface damage, the operation process is cumbersome, the pro...

AI Technical Summary

Problems solved by technology

Although the alloy casting block is used for fixing, although the deformation is slight and there is no surface damage, the operation process is cumbersome, the production cycle is long, and there is a certain degree of pollution

Although the purely mechanical clamping structure of hard clamping and floating clamping is simple to operate and easy to use, for example, first, a double-arm self-adaptive clamp for blade processing and deformation control, the invention authorization announcement number is CN104858682B, its The structure adopted is the method of fixing the tenon of the blade; second, an adaptive fixture based on the cross-sectional shape of the material. Blade clamp, the utility model authorization announcement number is CN 206632415U, its structure adopts the clamping method of clamping block; fourth, the positioning component suitable for various blade clamps, the announcement number is CN 206140143U, its structure adopts the longitudinal positioning of the fixed groove and The clamping method of lateral positioning of the left and right clamps to fix the stoppers; fifth, a blade clamp with a detachable positioning surface, the invention application publication number is CN 105415020A, and its structure uses tenon teeth for positioning; but due to the structural characteristics of these methods, their It is in point contact or partial surface contact with the blade surface, it is difficult to ensure the best fit with the blade surface, the force on the blade is uneven, and deformation is easy to occur; in addition, if the clamping force is small, the clamping may not be firm , the part will produce ripples on the surface due to vibration during processing, and if the clamping force is large, it will easily cause problems such as deformation and damage of the blade surface

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