毕业设计说明(汽车转向灯遮光罩成形工艺与级进模设计).docVIP

汽车转向灯遮光罩成形工艺与级进模设计 摘要：本文介绍了汽车转向灯遮光罩冲孔、弯曲、切断级进模的排样设计、模具结构及工作过程 ,还详细介绍了模具的制造要点Car turn signal hood molding technology and progressive die design Abstract: This article describes the car turn signal hood punching, bending, cutting progressive die nesting design, mold structure and working process, and also details the manufacturing point of the mold. Detailed comparison of the parts of several nesting solutions and cutting edge design, and lists the software parts rough commence, the calculation of the stamping process, and punch strength check; described in this article Progressive Die hole, a curved portion, the structure is more complex parts of the structure, composed of a plurality of step by punching, bending, blanking, is a pair of set of the plurality of processes as one of the mold, the step of forming comprises punching, forming, bending, etc.; in order to ensure non-interference in the mold at work, the design should be taken into account. Parts for process analysis based on the design and manufacture of multi-position progressive die, automatic feeding, to improve the precision of the parts, the efficiency of the workpiece at the same time, but also reduces the cost of doing business, improved stamping safety conditions. In the last article a brief introduction of the progressive die material selection and heat treatment and sets out in detail the calculation of the center of pressure. Key words: progressive mode; nesting; mold design 目 录 前 言 1 1 汽车转向灯遮光罩介绍及冲压工艺性分析 3 1.1 汽车转向灯遮光罩零件图的绘制 3 1.2汽车转向灯遮光罩工艺设计 3 2 排样设计 6 2.1 概述 6 2.2 毛坯排样 6 2.2.1 毛坯排样 6 2.2.2 搭边 7 2.2.3 步距 8 2.2.4 条料的宽度 8 2.2.5 材料利用率 9 2.3 冲切刃口设计 9 2.4 轮廓分解时分段搭接头应注意的问题 9 2.5 工序排样 9 2.5.1 工序排样类型 9 2.5.2 载体设计 9 2.5.3 条料定位方式 10 2.6 工序排样 10 2.7 条料尺寸及步距精度 11 3 工艺计算和设备选择 13 3.1冲压力的计算 13 3.2 弯曲力的计算 14 3.3 卸料力的计算 14 3.4 卸料弹簧的选用 14 3.5 确定压力中心 15 3.6 凸、凹模刃口尺寸的计算 15 3.6.1 凸、凹模刃口尺寸的计算原则 15 3.6.2 刃口尺寸计算方法 16 3.7 弯曲模的结构设计 17 3.8 设备的选择 18 3.8.1 完成各种工序所需的压力 18 3.8.2 压力机的校核 18 4 模具设计 20 4.1 模具结构概要设计 20 4.1.1 模具基