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精锻伞齿轮就是锻击齿形,省去了切削齿形的工作,工效提高几倍至几十倍;而且齿轮的耐磨性能好,抗断强度高,特别适应于传递扭矩大,工作条件恶劣的场合。锻造伞齿轮一般需用无氧化加热炉,模具加工要电脉冲机床,锻压设备需高速锤或大吨位的摩擦压力机或热模锻压床。我厂生产φ500轧机配套的伞齿轮时没有具备这些条件。在毛主席“独立自主,自力更生”光辉思想指引下,我们经过实践,认识,再实践,再认识,反复进行试验,充分吸取老工人的丰富经验,终于在1吨蒸气自由锻锤上,用普通燃煤加热炉,用刨削齿模加热反印的齿模锻出了所需的伞齿轮(m=8;Z=20,下料重9.2公斤),见图(图中左下图为锻造切边后的形状)。
Precision forging bevel gear is toothed tooth shape, eliminating the need for cutting tooth shape, work efficiency increased several times to several times; and the gear wear resistance, high breaking strength, especially adapted to the transmission torque, working conditions Bad occasion. Forging bevel gear generally require non-oxidizing furnace, die processing to electrical pulse machine, forging equipment required high-speed hammer or large-tonnage friction press or hot forging press. I plant production φ500 supporting the bevel gear does not have these conditions. Guided by Chairman Mao’s glorious thinking of “independence and self-reliance,” we learned from practice, knowledge, practice, re-understanding, and repeated experiments to fully draw on the rich experience of old workers. Finally, with 1 ton of steam-free forging hammer, Coal heating furnace, with a planing die reverse anti-stamping die forging out the required bevel gear (m = 8; Z = 20, feeding 9.2 kg weight), see the picture After the shape).