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东风牌 EQ140型汽车主减速器壳,是装配各减速轴、齿轮的基础件,各承孔间的同轴度、垂直度、平行度要求都很高,又无加工工艺孔,故修复难度较大。大修中,一般采用更换新件方法处理,因此成本高、旧件积压。为解决这一问题,对我单位近200只旧壳做了抽样调查,分析了大量数据。从旧壳磨损情况看,主动锥齿轮后轴承承孔80_(0.051)~(0.021)磨损者达95%以上,与它同轴的孔136~(+0.063)基本无磨损,2-140~(+0.04)孔磨损率为35%。所以,可以说主减速器壳的修复,
Dongfeng EQ140 automobile main reducer shell, is the assembly of the deceleration shaft, the gear of the basic pieces, the bearing hole coaxiality, verticality, parallelism are demanding, and no processing holes, it is more difficult to repair Big. Overhaul, the general method of replacement of new parts to deal with, so high cost, the backlog of old parts. In order to solve this problem, a sample survey was conducted on nearly 200 old shells of our unit, analyzing a large amount of data. From the old shell wear situation, the driving bevel gear rear bearing hole 80_ (0.051) ~ (0.021) wear more than 95%, with its coaxial hole 136 ~ (+0.063) basically no wear, 2-140 ~ ( +0.04) Hole wear rate of 35%. Therefore, it can be said that the main reducer shell repair,