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Meshing properties and application of major conical surface double envelope Hourglass worm gearing;

大锥面二次包络环面蜗杆副传动的啮合特征及其应用

In this paper, the regularities of undercutting and topping of major conical surface envelope hourglass worm is researched.

分析了大锥面包络环面蜗杆的齿顶变尖和根切规律 ,并通过和平面包络环面蜗杆的比较 ,得出其在根切和齿顶变尖这两个方面具有比平面包络蜗杆更优良的性能 ,因而是一种在实际中可替代平面包络、具有广泛应用前景的新型包络蜗杆传动。

According to the hydraulic transmission principle, a device for fabricating large cone angle near-field optical fiber probe by means of dynamic chemical etching is developed.

基于液压传递原理 ,设计出一种用动态化学腐蚀法制备大锥角近场光纤探针的装置 。

Optimum design of large cone angle thrust tapered roller bearings for rolling mills has been firstly introduced in this paper, together with systematic analysis of bearing internal force, roller contact stress,large rib taper face types and rib strength calculation of inner ring.

本文首次对大锥角轧机止推圆锥滚子轴承进行优化设计，并且对该类轴承的内部受力状况和滚子的接触应力、内圈大挡边锥面形式和内圈挡边强度计算进行了深入系统的分析。

A new species of the genus Macrostylophora is described.

记述大锥蚤属MacrostylophoraEwing ,192 91新种 ,福林大锥蚤Macrostylophorafulinisp 。

Macrostylophora hebeiensis shennongjiaensis ssp.

报道采自湖北省神农架林区大锥蚤属ＭａｃｒｏｓｔｙｌｏｐｈｏｒａＥｗｉｎｇ，１９２９一新亚种，即河北大锥蚤神农架亚种Ｍａｃｒｏｓｔｙｌｏｐｈｏｒａｈｅｂｅｉｅｎｓｉｓｓｈｅｎｎｏｎｇｊｉａｅｎｓｉｓｓｐ。