弯曲凹模电火花成形电极穿孔加工工艺课程设计.doc

存档资料成绩：华东交通大学理工学院课程设计（实训）报告书所属课程名称模具制造工艺学题目弯曲凹模电火花成形电极穿孔加工工艺分院专业班级学号学生姓名指导教师2014年12月12日目录第一章、引言········································4第二章、零件的技术要求及分析························52.1结构分析·································52.2图纸技术要求分析·························5第三章、毛坯的选择与设计····························53.1选择毛坯·································53.2毛胚结构尺寸及公差的确定·················63.3确定毛坯零件图···························6第四章、拟定凹模板工艺路线··························74.1定位基准的选择···························74.2加工阶段的划分···························74.3工序的集中与分散·························74.4工序顺序的安排···························74.5确定工艺路线·····························8第五章、加工余量及工序尺寸的确定····················95.1加工余量的确定···························9第六章、电极的设计与电规准的选择····················96.1电火花成形电极穿孔加工方法的选择·········96.2电极材料好机构的形式·····················116.3电极的结构形式···························136.4电极长度·································136.5电极截面尺寸······························136.6电规准的选择与转换························166.7电极制造··································18第七章、各工序切削用量的选择与计算···················18第八章、机械加工工艺过程卡···························20第九章心得体会······································23参考文献·············································23第一章、引言本课程设计是在完成《模具制造工艺学》学习的基础上，为了达到理论和实践结合的目的而进行的，突出了模具设计基础的应用，以提供更准确，实用，方便的计算方法，正确掌握并运用冲压工艺参数和模具工作部分的几何形状和尺寸的综合应用提高自我的模具设计和制造能力的综合应用。对本人而言，我相信通过本次课程程设计对自己未来从事的工作能有一定的作用，从中锻炼自己处理问题、分析问题的能力，为今后很快的适应工作打下基础。本课程设计包括以下几个方面的内容：零件的技术要求分析及结构分析主要包括功能结构、尺寸精度、表面粗糙度、形位公差、表面质量、硬度等机械性能要求、结构分析等。工艺规程设计毛坯的选择，根据零件的要求，进行毛坯尺寸和公差等零件锻件图的确定。毛胚制造工艺设计。电极的设计与电规准的选择包括电极加工方法的选择，材料选择，尺寸设计，电规准等参数确定，及对零件的表面和凹模孔工，工序内容的确定。工序卡填写工艺过程综合卡片，根据前述各项内容以及加工简图，一并填入机械加工工艺过程卡片中第二章、零件的技术要求及分析2.1结构分析该零件属于平板类，主要加工内容为平面及孔系和凹模。平面的加工方法为刨、铣、磨，孔系和凹模用电火花加工。2.2图纸技术要求分析图2-1弯曲凹模电火花线切割加工工艺设计（材料：T10A）1.上、下平面：平行度误差不能超过0.02um，达到IT5，表面粗糙度为1.6；2.孔：2个螺纹孔2-M10；3中心电火花电极穿孔达到IT9,表面粗糙度为0.4。第三章、毛坯的选择与设计3.1选择毛坯凹模板选用自由锻件（碳素工具钢T10淬火+低温回火：HRC60~64）。3.2毛胚结构尺寸及公差的确定毛胚加工余量的确定经过查表（《模具机械加工工艺》-郭铁良，）可知，初步选取毛胚余量为5mm(双边余量)。则毛坯结构尺寸为：长：118mm宽：50mm高：38mm。3.3确定毛坯零件图如下图3-1毛坯图第四章、拟定