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凸轮轴工作条件及材料

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凸轮轴工作条件及材料

发布日期:2017-11-15 作者:1 点击:

凸轮轴承受周期性的冲击载荷。凸轮与挺柱之间的接触应力很大,相对滑动速度也很高,因此凸轮工作表面的磨损比较严重。针对这种情况,凸轮轴轴颈和凸轮工作表面除应该有的较高的尺寸精度、较小的表面粗糙度和足够的刚度外,还应有较高的耐磨性和良好的润滑。
凸轮轴通常由优质碳钢或合金钢锻造,也可用合金铸铁或球墨铸铁铸造。轴颈和凸轮工作表面经热处理后磨光。


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