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圆锥滚子是圆锥滚子轴承中的主要零件。其外形如图1,为降低成本,提高零件的机械性能,一般φ25mm以下的滚子均采用如图2的上、下模冷镦而成。除高精度的轴承外。冷镦后的滚子两端倒角部位(图1细实线处)均不再机械加工。故对上、下模内腔须提出一定的要求。以防滚子的倒角部位出现偏大、偏小或不均匀的现象,影响外观和轴承的使用寿命。
Tapered roller tapered roller bearings in the main parts. Its appearance shown in Figure 1, in order to reduce costs and improve the mechanical properties of the parts, generally below φ25mm roller are used in Figure 2, the upper and lower mold cold heading. In addition to high-precision bearings. Cold heading after both ends of the chamfered part of the roller (thin solid line Figure 1) are no longer machined. Therefore, on the mold cavity must make certain requirements. To prevent the roller chamfer parts appear large, small or uneven phenomenon, affecting the appearance and bearing life.