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经过研究元锥轴承内圈毛坯特点及其在轴承工作时的受力情况后,将内圈小挡边热镶一“08”或“10”号钢圈.以7315为例,每个内圈毛坯,经此改进后可节约铬钢0.4公斤(原毛胚重为1.78公斤,而改进后毛胚重为1.38公斤).之所以减轻了毛胚的重量,是因为:以前在锻毛胚时,是按小挡边外径来留其加工余量(图一),而现在是按轴承套圈的滚道大端外径来留其加工余量.(图二)7315K挡圈是利用7315轴承保持架料心压制而成.将挡圈加热,使其热压于内圈肩台上这种新结构的元锥滚子轴承的优点:1.每个内圈可节约轴承钢0.4公斤;2.简化保持架和滚子装配于内圈上的工具和工序.
After researching the characteristics of the inner ring blank and the stress in the work of the bearing, the inner ring small edge hot inlay a “08” or “10” steel ring to 7315, for example, each inner ring Rough, after this improvement can save 0.4 kg of chrome steel (original blank weight of 1.78 kg, while improving the blank weight of 1.38 kg.) The reason why reduce the weight of the blank, because: Is by small diameter to retain the left side of its allowance (Figure 1), and now is by the large diameter raceway bearing outer diameter to leave its machining allowance .7315K ring is the use of 7315 bearing The cage material pressed from the heart will heat the ring, making it hot on the inner shoulder on the stage of the new structure of the advantages of the tapered roller bearings: 1. Each inner ring can save 0.4 kg of bearing steel; 2 Simplify the assembly of the cage and the rollers on the inner ring.