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成都无缝钢管厂318车间在1982年中修期间,对周期轧管机主传动减速机大齿轮一改冷压装配惯例,采用整体火焰加热装配,不但保证了工艺规定的较大过盈量,提高了装配质量,而且大大缩短了装配时间。该齿轮轴直径为470mm,长为3500mm,与之配合的大齿轮直径为3502mm、齿宽为1100mm,其配合形式为j~+,配合尺寸为φ470(D_3)/(jf)。原冷装时,须先搭架并焊接一个框形梁,再由人工用300吨的油压千斤顶将轴压入齿孔。一般每装配一次,需要7～10天,而且联结强度低,轮轴表面易被拉伤或压伤。该轴的装配过盈量按照工艺规定为0.035mm—0.17mm。但由于装配能力所限,实际采用的过盈量为0.05—0.07mm。这个过盈量在轧机主传动上的奥特曼齿形联轴器为减小
318 workshop in Chengdu Seamless Steel Tube Plant during the mid-repair in 1982, the cycle of the main drive reducer gear changed assembly practice, using the overall flame heating assembly, not only to ensure that the provisions of a larger amount of interference, Improve assembly quality, and greatly reduce assembly time. The gear shaft has a diameter of 470mm and a length of 3500mm. The diameter of the gearwheel cooperating with the gearwheel is 3502mm and the tooth width is 1100mm. The mating form is j ~ + and the mating size is φ470 (D_3) / (jf). The original cold, you must first frame and welding a frame beam, and then manually with 300 tons of hydraulic jack pressed into the perforation of the shaft. Generally every assembly, it takes 7 ~ 10 days, and the coupling strength is low, the axle surface is easy to be strained or crushed. The shaft assembly interference in accordance with the provisions of the process 0.035mm-0.17mm. However, due to limited assembly capacity, the actual amount of interference is 0.05-0.07mm. This interference in the main drive on the mill Ottermann gear coupling to reduce