Fixture and processing method for special-shaped groove of thin-walled parts

Abstract

A fixture and processing method for special-shaped grooves of thin-walled parts, including a fixture base, the fixture base is evenly opened with positioning through holes along the circumferential direction, the upper surface of the fixture base is fixed with a support platform by bolts, and the support platform is fixed and installed by bolts There are a first mounting base and a second mounting base, the first mounting base is screwed with a Y-direction clamping rotating rod, and the boss of the second mounting base is installed with an X-direction clamping rotating rod, and the X-direction clamping rotating rod It is set higher than the Y-direction clamping rotating rod, and the Y-direction positioning block and the X-direction positioning block are installed on the support platform by bolts. The Y-direction positioning block is set close to the second mounting seat, and the X-direction positioning block is close to the Y-direction positioning block. The positioning block is arranged, and the fixture base is fixedly installed on the transfer table of the machine tool through the auxiliary positioning block and bolts thereon. Compared with the conventional electric discharge machining method, the consumption of forming electrodes is eliminated, and the processing dimensional accuracy and consistency are high, which ensures the processing quality of special-shaped grooves in thin-walled parts and is suitable for mass production.

Description

technical field [0001] The invention belongs to the technical field of a main door plug of an aero-engine fuel injector, and in particular relates to a fixture and a processing method for a special-shaped groove of a thin-walled part, which can be used for processing the special-shaped groove of the main door plug of an aero-engine fuel injector. Background technique [0002] The principle of femtosecond laser processing is to absorb laser energy through a nonlinear absorption process and form plasma inside the material. The nonlinear absorption process is mainly realized by multi-photon ionization and avalanche ionization. Then, when the plasma concentration reaches a certain critical value, the material begins to strongly absorb the laser energy until the material is removed. Due to the extremely short pulse time and ultra-high peak power can realize the "cold processing" of materials, its heat-affected zone is extremely small, almost no heat is generated, and under the pr...

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Problems solved by technology

[0007] The purpose of the present invention is to solve the forming process of thin-walled special-shaped groove parts, solve the problems of low efficiency, high cost, microscopic defects, and inability to guarantee the processing accuracy of traditional processing methods. A fixture and processing method for thin-walled special-shaped grooves

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