顶把质量选择恰当与否,直接影响铆钉镦头的成形质量。目前,各航空工厂的铆接生产说明书中,还沿用五十年代苏联的老经验公式来选择顶把的质量,一般过于笨重。然而,操作者也不完全按老经验公式来选择,因此造成各行其事。我们经过反复试验,得出了新的顶把质量的经验计算公式: m=k·d 式中:m——顶把质量 d——铆钉直径 k——顶把质量系数k值的选择取用表1。 The quality of the top to choose the right or not, a direct impact on the formation of riveting heading quality. At present, the riveting production instructions of various aviation factories also follow the old empirical formula of the Soviet Union in the 1950s to select the quality of the jacking, which is generally too bulky. However, the operator is not entirely based on the old empirical formula to choose, thus causing each to do something. After repeated tests, we come to a new top quality of the empirical formula: m = k · d Where: m - the top of the quality of d - rivets diameter k - top Quality factor k value of the choice of access Table 1.