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Performance estimation depending on the insert size of conical picks by linear cutting test
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 Title & Authors
Performance estimation depending on the insert size of conical picks by linear cutting test
Choi, Soon-Wook; Kang, Tae-Ho; Chang, Soo-Ho; Lee, Cheol-Ho; Lee, Gyu-Phil; Kim, Chang-Yong;
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 Abstract
In order to estimate the performance of a conical cutter depending on the insert size, this study measured forces acting on conical cutters with different cutter spacings, penetration depths and skew angles using slim and heavy conical cutters. When cutter spacings ranged from 12 to 27 mm, the deviations of mean cutter forces with cutter depths appeared smaller compared to other cutter spacings. When skew angle is , the optimal S/d ratio was obtained in the range of 4 to 4.5 for which specific energy of cutting was minimized. It were usually found in the range of 1 to 5. However, when skew angle is , the optimal S/d ratio was obtained in the range of 1 to 3. The simple comparison results shows that the performance of slim cutter was superior to that of heavy cutter, but the use of heavy cutter can be effective, considering the cutter consumption and cutter damage when the strength of the ground is high enough.
 Keywords
Linear cutting test;conical cutter;Insert size;Cutter acting force;
 Language
Korean
 Cited by
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