ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The surface quality and contouring accuracy of die cavities directly influences the surfaceroughness of the products. Different types of complex surfaces of products have become popular inproduct design in recent years and consequently 5-axis machining techniques become a mainstreamin the manufacturing of the die and moulds used in products mentioned above, because of theirfeatures and flexibility. This research applies Taguchi method to find out a set of optimal machiningparameters in five-axis milling process. The table rotating-tilting type five-axis machine is used toperform the experimental cutting. The cavity of die is modeled as convex half spherical surface, andthe material of die is NAK 80 die steel. The four parameters studied are cutting speed, feed rate,tool paths, and contact points, and each of these factors has three levels. The target of this study isthe feature of smaller-the-better that is minimization of the surface roughness. The experimentalresults show that the optimal parameters are moderate cutting speed and contact points, higher feedrate, five-axis tool path. ANOVA analysis indicates that the tool path influences the surfaceroughness most, which accounts for about 86%. Using optimal parameters to machine a roughlymachined concave spherical surface can reach its roughness to 0.234μm, and the roundness errorabout 0.0314mm. It is believed that the results and method presented in the paper give a goodreference for industry applied
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/19/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.594.226.pdf
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