精密工学会誌
Online ISSN : 1882-675X
Print ISSN : 0912-0289
ISSN-L : 0912-0289
論文
超音波楕円振動切削によるタングステン合金の超精密加工
鈴木 教和閻 甄敏針谷 誠楊 積彬浜田 晴司樋野 励社本 英二
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2007 年 73 巻 3 号 p. 360-366

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‘Ultrasonic elliptical vibration cutting’ technology is applied in the present research to ultraprecision machining of tungsten alloy, which is expected as a material of molds for glass parts instead of sintered tungsten carbide or CVD-silicon carbide. It is confirmed that ulptraprecision grooving of the tungsten alloy cannot be realized by the ordinary cutting. On the other hand, it can be realized by the elliptical vibration cutting at a cutting depth of less than 0.8 μm. Effects of the cutting distance on the cutting force and the surface roughness are also clarified, and it is found that surface roughness of less than 100 nm Rz can be attained up to a cutting distance of 35 m. Practical molds of the tungsten alloy for spherical glass lenses and a glass prism are successfully machined by the elliptical vibration cutting.

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© 2007 公益社団法人 精密工学会
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