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。
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。
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。
Diamond grinding wheel dressed with D cup wheel or diamond powder sintered bar could be used for finish grinding;
单用D杯型砂轮或金刚石微粉烧结棒法修整后的碟形金刚石砂轮适用于精密磨削；
1LF hydraulic reversible plow is mounted with four-wheel tractor; it is used for the loam, sand loam , cultivated and dry land , it can finish the furrowing work in double way.
1LF系列翻转犁是同四轮拖拉机配套的全悬挂式液压翻转犁，适用砂土壤和旱田熟地耕翻作业，可进行梭式双向作业，耕后地表面平整，具有地头空转行程少，作业效率高等特点。
1LF hydraulic reversible plow is mounted with four-wheel tractor; it is used for the loam, sand loam , cultivated and dry land , it can finish the furrowing work in double way.
1LF系列翻转犁是同四轮拖拉机配套的全悬挂式液压翻转犁，适用砂土壤和旱田熟地耕翻作业，可进行梭式双向作业，耕后地表面平整，具有地头空转行程少，作业效率高等特点。
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