伞齿輪毛坯的形状比較复杂(如图1),原來需要两火才能鍛成(压脚并镦粗,錘下滾清棱,冲孔整形),而且不能鍛出錐状来,需要花費大量的机械加工工时,材料又浪費了很多。同志們針对这种情况提出化多火为一火,改进一付鍛模(图2),終于实現了伞齿輪毛坯的一火化鍛造。鍛造过程如图3所示。用110×135毫米的圆鋼(重10公斤)放在鍛模中打到同模口接近,这时镦粗部分由于塑性变形形成了錐状;接着把上模套上燜打,燜好后把模具翻个放在漏盘上把鍛坯投出。上模有一个φ30×8的圓冲头,起自定中心作用,可以在 Bevel gear rough shape is more complex (Figure 1), the original need two fires forging (presser foot and upsetting, hammer rolling edge, punching plastic), and can not be out of the cone to take a lot of Machining working hours, materials and a lot of waste. Comrades in response to this situation put forward more fire as a fire, improve a pair of forging die (Figure 2), finally realized a bevel gear forging a cremation. Forging process shown in Figure 3. With 110 × 135 mm round bar (weighing 10 kg) on ​​the forging die hit close to the same die, then the upset due to plastic deformation of the cone-shaped; then put the mold on the braised fight, stewed good Turn the mold over the drain pan and cast the forged blanks. The punch has a φ30 × 8 round punch, play a central role in the center