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Gloss Estimating Method of Finished Surface Machined by Ball Nose End-Milling under Constant Contact Angle with a Five-Axis Controlled Machining Center

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Abstract:

In recent years, studies have been conducted about creating metal moulds using a five-axis controlled machining centre with ball end milling. Most of these reports concern the programming of CAM based on geometry. However, there have been few reports related to polish-less finished surface. Furthermore, a specular surface like a mirror and finishing under a constant angle between ball end milling and the work piece have not been investigated. Therefore, this paper deals with the gloss of the machined surface when feed rate and pick-feed rate are changed to maintain constant surface roughness considering tool run-out under the condition that the angle between the tool and work piece in contact are inclined at 15. However, by changing the combination of feed rate and pick-feed rate, various specular changes and direction of disposition of reflected light were obtained. Therefore, we suggest a new method of evaluating the gloss of these finished surfaces. Comparing results by the proposed method with ones by a glossmeter, it is clear that an appropriate ratio of feed rate and pick-feed rate is important for obtaining finished surface. Moreover, it is demonstrated that the proposed method is effective for estimating the gloss of the machined surface.

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Periodical:

Key Engineering Materials (Volume 516)

Pages:

475-480

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.516.475

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Online since:

June 2012

Authors:

Kenichi Terada, Toshiki Hirogaki, Eiichhi Aoyama, Keiji Ogawa

Keywords:

Ball-End Mill, Finished Surface, Five-Axis Controlled Machining Centre, Specular, Surface Roughness (SR)

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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