Grinding gear with the toroidal involute interior thread worm grind wheel is a new kind of process in hard surface gear finish machining.

针对面齿轮硬齿面磨削加工中存在的困难，提出用蜗杆砂轮磨削的双参数法来磨削面齿轮。

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Grinding gear with the toroidal involute interior thread worm grind wheel is a new kind of process in hard surface gear finish machining.

渐开面包络环面内螺纹蜗杆砂轮磨齿，是一种硬齿面齿轮精加工的新型工艺。

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With spiral grooved grinding wheel, one can get better surface finish and roundness than with conventional grinding wheel, especially when applied in grinding hard material such as carbide.

采用这种新型砂轮可以比使用无螺旋沟槽砂轮降低表面粗糙度和提高圆柱度。对于加工难加工材料，如硬质合金效果特别显著。

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Button's disappointing season continued when he failed to finish in the points after being sent out from his final pit stop with a loose front wheel, having been fifth at one stage.

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