论文部分内容阅读
在锻造实践(一)中(见本刊一九七七年第四期),已经介绍了大圆锥齿轮、二轴的锻造工艺情况,这里重点谈一谈二轴锻造的模具,操作钳和加热炉。一、二轴的模具设计计算 1.“54”二轴工艺计算(图8) 1)头部重量G头按锻件图: G头=G_1+G_2+G_3=5.25公斤考虑火耗: G头料=G头×1.03=5.4公斤头部所需坯料尺寸:φ85×207 2)实际镦粗比(?) (?)=(207+3)/65=3.23(考虑了1.5％热伸长) 当(?)≥3时,直接镦粗易弯曲,并使锻件产生折缝、偏心、单面大飞边另一边不满以至报废。且立镦装置也不允许锻件产生弯曲和偏心,否则锻件会将两半模卡死,别死在底座中。
In forging practice (a) (see the publication of the fourth quarter of 1977), has been introduced bevel gear, two-axis forging process, here to focus on two-axis forging die, operating forceps and heating furnace. First, two-axis mold design and calculation 1. “54” two-axis process calculation (Figure 8) 1) head weight G head by forging Figure: G head = G_1 + G_2 + G_3 = 5.25 kg Consider the fire: G headstock = G head × 1.03 = 5.4 kg head Blank size required: φ85 × 207 2) Actual upset ratio (?) (?) = (207 + 3) /65=3.23 (considering 1.5% thermal elongation) (?) ≥ 3, the direct upsetting and easy to bend, and the forging crease, eccentric, one side of the big flash on the other side dissatisfaction and even scrapped. And the upsetting device also does not allow forgings have bending and eccentricity, otherwise the forging will die halves die, do not die in the base.