在自由锻锤上利用套筒模锻造,一般都在普通平砧上进行。平砧有两个突出的缺点:一是终成形最后的一两次锤击时,模具跳动非常厉害,把持模具费力且不安全;一是出件时须在平砧上另垫一个出件漏盘,增多了操作手续,提高了劳动强度。为了克服上述缺点,我们成功地采用了防跳并带漏盘的下砧,结构如图1所示。下模可沿导向防跳板左右移动,以适应于完成不 Free forging hammer on the use of sleeve die forging, are generally carried out on the ordinary anvil. Flat anvil has two outstanding shortcomings: First, the last one or two final hammering, the mold beating very powerful control of laborious and insecure mold; one is to be out of an anvil in the flat an additional piece Leak disk, an increase of operating procedures, improve labor intensity. In order to overcome the above shortcomings, we successfully adopted the anti-jump and with a drain pan anvil, the structure shown in Figure 1. The lower mold can be moved along the guide anti-board to adapt to complete no