Conical bit rotation as a function of selected cutting parameters
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Conical bit rotation as a function of selected cutting parameters

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      "The Bureau of Mines is engaged in research to evaluate the effects of cutter bit wear at coal mine faces. This paper addresses one element of conical bit wear, bit rotation. A discussion on mounting configuration and bit forces and their effects on rotation is presented. The effects on rotation and bit forces of bit attack angle, cutting depth, and skew are determined for two types of conical bits during linear cutting of sandstone-inclusive rock. The results indicate that a 10 deg. Negative skew angle and 35 deg. Attack angle produce the maximum rotation of 17.5 Deg. For each foot of cutting. Data on bit rotation and bit forces are presented in an appendix." - NIOSHTIC-2 NIOSHTIC no. 10004765
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