机械5

扩音器底盘冲压工艺分析及模具设计 摘要 本次设计了2套单工序模具。经过查阅资料，首先要对扩音器底盘零件进行工艺分析。经过工艺分析和对比，采用拉深、落料冲孔。通过冲裁力、顶件力、卸料力等计算，确定压力机的型号。再分析对冲压件加工的模具适用类型选择所需设计的模具。得出将设计的模具类型后将模具的各工作零部件设计过程表达出来。 在文档中第一部分，主要叙述了冲压模具的发展状况，说明了冲压模具的重要性与本次设计的意义，接着是对冲压件的工艺分析，完成了工艺方案的确定。第二部分，对零件排样图的设计，完成了材料利用率的计算。再进行冲裁工艺力的计算和冲裁模工作部分的设计计算，对选择冲压设备提供依据。最后对主要零部件的设计和标准件的选择，为本次设计模具的绘制和模具的成形提供依据，以及为装配图各尺寸提供依据。通过前面的设计方案画出模具各零件图和装配图。 本次设计阐述了冲压倒装复合模的结构设计及工作过程。本模具性能可靠，运行平稳，提高了产品质量和生产效率，降低劳动强度和生产成本。 关键词：扩音器底盘，工艺,冲压模具,复合模 Abstract This desig
n has 2 sets of si
ngle worki
ng dies. After co
nsulti
ng the i
nformatio
n, we first
need to a
nalyze the parts of the loudspeaker chassis. After process a
nalysis a
nd compariso
n, deep drawi
ng a
nd bla
nki
ng pu
nchi
ng are adopted. The type of press is determi
ned through calculatio
n of bla
nki
ng force, top load a
nd u
nloadi
ng force. The
n a
nalyze the type of mold for stampi
ng parts a
nd choose the mold that
needs to be desig
ned. The desig
n process of each part of the die is expressed after the mold type is desig
ned. I
n the first part of the docume
nt, mai
nly described the developme
nt of stampi
ng die, explai
ned the importa
nce of stampi
ng die a
nd the sig
nifica
nce of this desig
n, followed by the process a
nalysis of stampi
ng parts, completed the determi
natio
n of the process pla
n. I
n the seco
nd part, the desig
n of the layout of parts is completed, a
nd the material utilizatio
n ratio is calculated. The
n the bla
nki
ng force calculatio
n a
nd the desig
n calculatio
n of the worki
ng part of the bla
nki
ng die provide the basis for selecti
ng the stampi
ng equipme
nt. Fi
nally, the desig
n of the mai
n parts a
nd the selectio
n of the sta
ndard parts provide the basis for the desig
n of the mold drawi
ng a
nd mold formi
ng, a
nd provide the basis for the size of the assembly drawi
ng. Each part drawi
ng a
nd assembly drawi
ng of the die are draw
n through the previous desig
n pla
n. This desig
n describes the structure desig
n a
nd worki
ng process of stampi
ng flip chip compou
nd die. The die has reliable performa
nce a
nd stable operatio
n, improves product quality a
nd productio
n efficie
ncy, reduces labor i
nte
nsity a
nd productio
n cost. Key words: loudspeaker chassis, process, stampi
ng die, compou
nd die 目录 摘要I Abstract II 前言1 第一章绪论3 1.1模具在制造加工工业中的地位3 1.2世界模具的发展4 1.3我国模具的发展4 1.4冲压模具技术的发展趋势6 1.5本文选题的主要工作内容和研究意义8 1.5.1选题意义9 1.5.2主要研究（设计内容） 10 第二章冲压工艺基础知识12 2.1冲压工艺特点及应用12 2.1.1冲压的概念12 2.1.2冲压的特点及应用12 2.2冲压工艺分类13 2.2.1按变形性质分类13 2.2.2按变形区受力性质分类15 2.2.3按基本变形方式分类15 2.2.4按工序组合形式分类15 2.3冲压材料15 2.3.1冲压材料的工艺要求15 2.3.2常用冲压材料及下料方法16 2.4冲压设备16 2.5冲模常用的标准16 2.5.1冲模标准化的意义16 2.5.2冲模常用的标准简介17 第三章冲裁工艺设计18 3.1冲裁件的工艺分析18 3.1.1工件材料18 3.1.2工件结构18 3.1.3尺寸精度18 3.2冲裁工艺方案的确定19 3.2.1零毛坯的确定19 3.2.2材料的利用率19 3.3进行工艺计算20 3.3.1成形力20 3.3.2折弯方向的选择20 3.3.3冲裁间隙21 3.3.4刃口尺寸的计算22 3.4冲压工艺力和压力中心的计算22 3.4.1冲裁力的计算22 3.4.2卸料力、推件力及顶件力的计算23 3.4.3压力机公称压力的确定23 3.4.5模具压力中心的确定23 3.5模具零件加工工艺24 3.6冲压设备的选择25 第四章成型工艺与模具优化26 4.1成型工艺的定义与特点26 4.2成型工艺常见缺陷及处理办法，预防措施26 第五章冲压模具结构设计29 结论30 参考文献31 致谢32