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SYSTEM, METHOD AND APPARATUS FOR PREDICTING TRACKING BY ROLLER CONE BITS AND ANTI-TRACKING COMPACT
SYSTEM, METHOD AND APPARATUS FOR PREDICTING TRACKING BY ROLLER CONE BITS AND ANTI-TRACKING COMPACT
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机译:用于预测圆锥滚子轨迹和反轨迹紧凑的系统,方法和装置
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摘要
Embodiments of an apparatus for predicting and reducing tracking by roller cone bits by adjusting compact spacing are disclosed. Different pitches between adjacent compacts or teeth provide a cone row that is substantially less likely to track. A given row on a cone may include compacts that are arrayed at a single pitch in a contiguous group for approximately half of the row. The remaining approximately half of the row includes alternating pitches. This configuration enables anti-tracking behavior without very wide spaces and consequent breakage and wear seen in prior art anti-tracking pitch schemes.
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