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我厂生产的跃进汽车后桥壳,尺寸公差、形位公差要求都非常严格,特别是螺旋齿轮主动轴孔与差速器轴承孔两轴线位置度要求≤0.05mm,主动轴孔端面对轴心线的跳动≤0.06mm,主动轴孔中心线对两壳的接合面尺寸为65±0.025mm。这样的公差要求没有专机是根本保证不了的。我厂利用现有的旧车床改制了一台专用镗孔兼车端面机,该机经多年的生产实践,多次的质量行业鉴定,完全满足了产品的精度要求。现将该机结构介绍于后。
I plant production Yuejin automobile rear axle housing, dimensional tolerances, the form of tolerance requirements are very strict, in particular the helical gear drive shaft hole and the differential bearing hole two axis position requirements ≤ 0.05mm, the shaft axis of the shaft Heartbeat beat ≤0.06mm, the centerline of the drive shaft hole on the two shell joint surface size of 65 ± 0.025mm. This tolerance requires no special plane is not guaranteed at all. I plant the use of the existing old lathe restructuring a special boring and dosing end of the machine, the machine after years of production practice, many of the quality industry appraisal, fully meet the accuracy requirements of the product. Now the aircraft structure introduced in the post.