Papers by Keyword: Aviation Aluminum Alloy

Abstract: Cutting force and cutting temperature are two important parameters in the cutting processes. In this paper, AdvantEdge finite element analysis software was used to simulate and analyze the reaming process of aviation aluminum alloy 7050 by using PCD reamer. The cutting simulation model was established to investigate the effect of spindle speed, feed per tooth on thrust force and cutting temperature. Simulation results showed that the cutting force increased with the increase of feed per tooth at different spindle speeds. And in the case of different feed per tooth, the cutting force decreased slightly as the spindle speed increase. Besides, from the cutting temperature distributed in the reamer, the cutting temperature near the tip of the tool in the reaming process was highest, the cutting temperature increased with the increase of both spindle speed and feed per tooth.

Abstract: In this paper, an aviation aluminum-alloy cutting technology database system was built with SQL Server 2008 and Visual Studio 2010, according to the problem that the management of aviation aluminum structural parts for production is inefficient. The establishment of the aviation aluminum-alloy cutting technology database used Group Technology to classify the technology data of aviation aluminum alloy structural parts, based on analyzing the structures of many aviation aluminum structural components. At the last part of the paper, an example was taken to show the practicality of the system.

Abstract: This paper introduces the basic principle, features and overall structure of Aviation Aluminum Alloy technology CAPP system. It also discusses 3 key techniques of the system : 1. designing Parts Classification Coding System based on Group Technology. 2. key features coding. 3. technology query based on the part similarity. After coding a new Aviation Aluminum Alloy structural part, the system can work out the part similarity between the new part and the existing ones and show the typical technology of the part which has the highest similarity.

Abstract: Based on milling experiment to explore the transformation and stress condition in the process of cutting of the thin-wall part made by aviation aluminum alloy, and then get data from the milling experiment through altering the axial cutting depth Ap=1 mm (a=1 mm), cutting radius Ae, spindle speed n and feed per tooth for milling force fz. Considering the milling force coefficient affected by each milling parameters, the orthogonal experiment of four factors and four levels are designed, and the milling coefficient is solved by MATLAB. The results indicates that the axial cutting depth Ap=1 mm (a=1 mm), the cutting force Fx increases with increasing in feedrate per tooth fz (c). the feedrate per tooth fz=0.03 mm (c=0.03 mm), the cutting force Fx increases with increasing in the axial cutting depth Ap. The discipline that the milling coefficient has an influence on milling force is obtained from the research which can provide the reference on the purpose of optimizing milling coefficient.

Abstract: Surface hardening plays an important role in the evaluation of surface quality and performance of wear-resisting of components. Surface hardening of aluminum alloy 7050 is researched in high speed milling by means of micro-hardness experiments and formula. It is greatly influenced by different cutting speed and material. The relationship between surface hardness and cutting parameters are obtained and studied. The surface hardening is particularly sensitive to cutting speed and slightly to the width of cut. The effect of depth variant of machined layer on micro-hardness is analyzed, and the equation between work hardening capacity and layer depth is established to predict the harden layer depth in different conditions. The experiment results show that the work hardening capacity and layer depth in high speed cutting is greater than that in conventional cutting.