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Surface Roughness Characteristics of Polyamide APA after the Turning by Unconventional Cutting Tool
Abstract:
The article deals with surface roughness characteristics of polyamide APA after the turning by tool with linear cutting edge. The experiment was centred on the obtaining of Ra and Rz dependences on both cutting speed and feed per revolution concurrently. Polyamide APA allows the production of very large structural and semi-structural parts for automotive and non-automotive applications including interior, exterior and under-the-hood applications. It also allows reducing the total cost of production, especially for lower volume parts. Therefore, the authors deals with the possibility to work this material. The special cutting tool was selected in regard to the author´s previous experiments. The surfaces of investigated metal samples, which were machined by the tool with linear cutting edge, achieved very good properties, so it was the reason for the using of this tool at the experiments presented in the article. Obtained values of surface roughness characteristics were worked up by means of regression analysis and according to the rules for statistical data processing. The results are arranged into the table and consequently into the graphical presentations. The shapes of chips at the machining within various working conditions are shown at the end of the article. Next experiments will be focused on the machining of other types materials with the same unconventional cutting tool and for the obtaining new data that characterize the machined surface.
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Pages:
263-268
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Online since:
May 2013
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