摘要 机械制造工艺学课程设计是我们学完了大学的全部基础课、技术基础课以及大部分专业课之后进行的.这是我们在进行设计之前对所学各课程的一次深入的综合性的总复习,也是一次理论联系实际的训练,因此,它在我们四年的大学生活中占有重要的地位。 这次设计的是端盖，有零件图、毛坯图、装配图各一张，机械加工工艺过程卡片和与所设计夹具对应那道工序的工序卡片各一张。首先我们要熟悉零件，题目所给的零件是端盖。了解了端盖的作用，接下来根据零件的性质和零件图上各端面的粗糙度确定毛坯的尺寸和机械加工余量。然后我们再根据定位基准先确定精基准，后确定粗基准，最后拟定端盖的工艺路线图，制定该工件的夹紧方案，画出夹具装配图。 Abstract Machi
nery Ma
nufacturi
ng Tech
nology curriculum desig
n is fi
nished we lear
n all the basic course of the U
niversity, tech
nology a
nd the most basic course after the specialized, which is our graduatio
n project before co
nducti
ng the various courses of study by a
n i
n-depth comprehe
nsive review of the total, is also a Theory with practical trai
ni
ng, therefore, i
n our four years of u
niversity life occupy a
n importa
nt positio
n. This is the cover desig
n, parts map, rough map, o
ne of the assembly, machi
ni
ng process with the card a
nd the correspo
ndi
ng fixture desig
ned by the procedures of the process of a card. First of all, we must familiar with the parts, the parts subject to the cover. Cover u
ndersta
ndi
ng of the role, followed i
n accorda
nce with the
nature of parts a
nd compo
ne
nts i
n the face of the map o
n the rough
ness of rough determi
ne the size a
nd mecha
nical Jiago
ngyulia
ng. Accordi
ng to a
nother locatio
n a
nd the
n we set the be
nchmark fi
ne first base, established after the be
nchmark crude, fi
nalizi
ng the cover of the road map, the e
nactme
nt of the workpiece clampi
ng programme, to draw fixture assembly. 目录 1、端盖的工艺分析及生产类型的确定2 1.1、端盖的用途2 1.2、端盖的技术要求2 1.3、审查端盖的工艺性2 1.4、确定端盖的生产类型3 2、确定毛胚、绘制毛胚简图3 2.1选择毛胚3 2.2确定毛胚的尺寸公差和机械加工余量3 2.2.1公差等级3 2.2.2端盖铸造毛坯尺寸工差及加工余量4 2.2.3绘制端盖毛坯简图4 3、拟定端盖工艺路线5 3.1、定位基准的选择5 3.1.1．精基准的选择5 3.2.2．粗基准的选择5 3.2 、表面加工方法的确定5 3.3、加工阶段的划分6 3.4、工序的集中与分散6 3.5、工序顺序的安排6 3.5.1机械加工工序6 3.5.2．热处理工序7 3.5.3．辅助工序7 3.6、确定工艺路线7 4、加工余量、工序尺寸和工差的确定8 5、切削用量、时间定额的计算9 5.1、切削用量的计算9 5.1.1钻孔工步9 5.1.2粗铰工步10 5.1.3精铰工步10 5.2、时间定额的计算10 5.2.1．基本时间tj的计算10 5.2.2．辅助时间ta的计算11 5.2.3.其他时间的计算12 5.2.4．单件时间tdj的计算12 6.夹具设计13 6.1提出问题13 6.2设计思想14 6.3夹具设计14 6.3.1定位分析14 6.3.2切削力及夹紧力的计算15 6.3.3夹具操作说明17 6.3.4确定导向装置17 7.体会与展望18 8.参考文献19