It is much more advantageous to adopt a taper straight-side triangular spline than an involute one, for example, in linking up big gear of wheel bub reductor with axle shaft in heavy duty trucks.
重型汽车等的轮边减速器大齿轮与半轴的联接，采用锥度直边三角花键联接较用渐开线花键联接具有很多优点。
Maybe the chemically etched can form the taper but the hole dimension maybe too big if only etch from one side.
化学蚀刻的模板也可以成锥形，但是如果只从一面腐蚀，开孔尺寸可能太大。
Cold ring rolling is a new technology to produce high-tech seamless rings. The asymmetry of the metal distribution in the taper ring causes large axial force, as well as sunken side faces.
冷辗扩是生产高质量无缝环件的新工艺，圆锥套圈辗扩由于金属分布的不均匀导致辗扩过程会产生较大轴向力，同时端面出现拉凹。
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