... 内皮尔差动螺旋舵装置 Napier's differential screw steering gear 螺旋齿轮装置 Screw gearing ; spiral gearing 螺旋升流装置 SUFR ...
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在15世纪早期，人们发明了螺旋弹簧或均力圆锥轮，尽管它的主弹簧的张力不断变化，但仍能对计时装置的齿轮保持恒定的力。
In the early 1400s came the invention of the coiled spring or fusee which maintained constant force to the gear wheels of the timekeeper despite the changing tension of its mainspring.
本文介绍齿轮螺旋线标准装置的测量原理、结构及结果。
This paper describes the measuring principle, construction and results of the helix standard system for testing gears.
提出一种用螺旋角仿形加工装置在工具磨床上刃磨齿轮滚刀前刀面的方法。
By using the profile modeling machining equipment of helix Angle, a new method about grinding rake face of gear cutter hob on tool grinder is presented.
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