Design and Clamping Force Analysis of Vacuum Fixture to Machine Aerospace Components
نویسندگان
چکیده
Machining of thin-walled (aluminium alloy) aerospace structures is a critical process due to the high warpage. Current practices in the fixture design and the choice of cutting parameters rely solely on conservative guidelines and the designer’s experience. This paper presents evaluation of clamping force to fix the work piecein aVacuum fixture using Vacuum pump. The ISCARonline calculator is used to evaluate tangential and axial cutting force for a milling cutter. The component is practically subjected to forces (Axial &Tangential), are analysed and the optimum amount of clamping force necessary to hold the component for proper machining is calculated, using mathematical equations and shop formulas, which is then compared to finite element (FE) predictionsunder static analysis and Modal analysis at different modes, arriving at experimental and practical results, and at that particular time, how the cutting forces are acted is observed. Fixtures are designed in CATIA V5.
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