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新结构凸轮轴增加了一个φ20毫米的贯通油孔,光洁度要求▽5,偏心<0.5/1000。材料为50Mn,调质至HRC30左右。4缸凸轴轴长度约为1400毫米,5缸凸轮轴约1600毫米,5缸以上由二根凸轮轴组合而成,长轴约1200毫米,短轴约900毫米。对于L/D大于10,小于30的深孔通常采用接长麻花钻加工。有光洁度要求的孔,再加铰孔工序。但对于L/D>45的深孔,采用
The new structure of the camshaft increased by a φ20 mm through hole, smooth requirements ▽ 5, eccentricity <0.5 / 1000. Material 50Mn, quenched and tempered to about HRC30. The 4-cylinder male shaft has a length of about 1,400 mm, a 5-cylinder camshaft of 1,600 mm, and a combination of two camshafts of 5 or more cylinders. The long axis is about 1200 mm and the short axis is about 900 mm. For L / D greater than 10, less than 30 deep hole is usually used to take long twist drill processing. Requirements of the finish hole, plus reaming process. But for the L / D> 45 deep hole, used