SolidWorks还引入了奇 特的可变投放螺旋 ( Variable Pitch Helix )，用于帮忙机械预设师创立出匡助变速系统；对那一些由传送系统或者包装系统举行通报的货物，该匡助变速系统可以提高或者减低货物...
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helix with variable pitch 变螺距螺旋线
Programming by the plane curve unwrapped from the helix curve and cutting layer by layer, we created the variable pitch screw on the 3.5 axis NC milling.
文章基于3.5轴数控铣床，利用螺旋线展开的平面曲线编程，分层切削，加工出变螺距螺纹；
A helix equation of time-varying pitch is established, revolving elliptic cylinder as equal angular velocity and rising as variable velocity at the same time.
建立了绕椭圆柱面以等角速度旋转，又以变速度上升的非定常螺距的螺旋线方程。
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