冷冲工作压力和功的简便图算法(二)

• 作 者: 张正修
• 机 构: 国家仪表总局西安设计研究院,
• 出 处: 电子工艺技术
• 发表日期: 1981年11期
• 关键词: 拉延力 图算法 通用计算公式 工作压力 变薄拉延 危险断面 压边力 安全系数 压边圈 压边

三、拉延力和拉延功的图算法确定拉延力的理论根据是拉延时拉延件危险断面上的应力必须小于拉延件材料的极限拉拉强度Бb。否则,拉延件即在拉延时破裂。由此可写出断面或底部呈任意形状的拉延件各次拉延的拉延力通用计算公式如下: P_拉=KLt_料Б_b (15)式中,K—安全系数,通常取K=1.1～1.3; L—拉延件周边长度,毫米; t_料—拉延件的料厚,毫米;

Third, the drawing algorithm of drawing power and drawing power The theoretical basis for determining drawing force is that the stress on the dangerous cross-section of drawing component must be less than the ultimate tensile strength Бb of the drawing material. Otherwise, the drawing pieces ruptured upon drawing. Which can be written at the bottom of the cross section or any shape of the drawing of the drawing of the drawing force of the general formula is as follows: P_ pull = KLt_ material Б_b (15) Where, K-safety factor, usually K = 1.1 ~ 1.3; L - the length of the surrounding parts of the drawing, mm; t_ material - the thickness of the drawing parts, mm;