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支重轮是林业拖拉机的行走部分的重要零件。在300吨摩擦压力机用两个成形模具热成形。班产第一次成形可达到250～300件,第二次成形可达到200～250件。此模具经多年的生产实践考验,效果很好。第一次成形模具结构: 图1所示为第一次完成零件工艺简图。将8毫米厚的27硅锰钢板下成φ780毫米直径料,放在加热炉中加热到950～1050℃左右,取出放入图2所示的模具中压成图1的形状要求。其模具结构:上模由芯头4和凸模外套5用四个六角螺栓连接固定在一起,凸模3为三块所拼成的活块,当压力机向下工作时,上模芯头4
Rollers are an important part of the walking part of a forestry tractor. The 300-ton friction press was thermoformed with two forming dies. Production for the first time in the class can reach 250 to 300, the second forming up to 200 to 250. This mold after years of production practice test, the effect is very good. The first mold structure: Figure 1 shows the first complete parts process diagram. The 8mm thick 27SiMn steel sheet into φ780mm diameter material, placed in a heating furnace heated to about 950 ~ 1050 ℃, removed into the mold shown in Figure 2 pressure into the shape of Figure 1 requirements. The mold structure: the upper die from the core 4 and the punch jacket 5 with four hex bolts connected together, the punch 3 is made of three pieces of living piece, when the press down work, the core die 4