机械5

摘要 目前数控技术所涉及到的知识面非常广阔，渗透到各种行业，比如机械行业，制造业，军事业。差不多将我们在大学生涯所学的所有专业知识综合运用起来。这次设计使我更加熟悉的数控知识，同时使我更加熟练了对CAD以及mastercam软件的了解和对其熟练的运用，因此通过本次设计不仅仅是一次对我们大学生涯里的知识的了解，也是对我们的测验。 本主要内容是加工工艺设计及编程仿真，首先根据零件的图纸及技术要求进行了详细的数控加工工艺分析，分析过后对该零件进行了数控加工工艺设计，拟定了加工方案，选择了加工设备、加工刀具、夹具，确定了装夹方案、切削用量，制定了加工顺序、编制了零件的数控加工工序卡片和刀具卡片等。最后，详细说明了如何运用mastercam自动编程编制该零件的数控程序。 关键词：iPho
ne X手机壳凹型芯；工艺分析；方案设计；数控编程 Abstract At prese
nt, CNC tech
nology i
nvolves awide ra
nge of k
nowledge, i
nfiltratio
n i
nto avariety of i
ndustries, such as machi
nery, ma
nufacturi
ng, military. Almost all the expertisewe have lear
ned i
n our college career has bee
n combi
ned. This graduatio
n project makes me more familiarwith
numerical co
ntrol k
nowledge, a
nd at the same time makes me more skilled i
n u
ndersta
ndi
ng a
nd usi
ng CAD a
nd mastercam software, so this graduatio
n project is more tha
n just a k
nowledge of our u
niversity career. It's also a test for us. The mai
n co
nte
nt of this paper is machi
ni
ng process desig
n a
nd programmi
ng simulatio
n. Firstly, accordi
ng to the drawi
ng a
nd tech
nical requireme
nts of the part, the detailed
numerical co
ntrol machi
ni
ng process a
nalysis is carried out, a
nd the NC machi
ni
ng process desig
n of the part is carried out after the a
nalysis. The machi
ni
ng pla
n is draw
n up, the machi
ni
ng equipme
nt, cutti
ng tool a
nd fixture are selected, the clampi
ng scheme, cutti
ng qua
ntity, machi
ni
ng seque
nce, NC process card a
nd tool card of the parts areworked out. At last, it explai
ns i
n detail how to use mastercam to program the NC program of the part i
n detail. Keywords: automobile lamp holder co
ncave pu
nch; process a
nalysis; scheme desig
n;
numerical co
ntrol programmi
ng 目录 摘要1 Abstract 2 第一章绪论4 1.1数控机床的发展4 1.2数控加工工艺的基本知识5 1.3数控加工工艺的特点6 第二章零件分析7 2.1 iPho
ne X手机壳模具图7 2.2零件加工工艺性分析7 2.2.1型腔零件图分析7 2.2.2型芯零件图分析9 第三章加工工艺11 3.1定位基准的选择11 3.1.1粗基准的选择11 3.1.2精基准的选择11 3.2夹紧方案的选择11 3.3加工机床的确定13 3.4刀具的选择14 3.5三要素的确定16 3.6量具选用20 第四章加工工艺文件制定21 第五章零件仿真23 5.1零件加工顺序及软件加工方式的确定23 5.2软件编程24 5.2.1型腔加工仿真24 5.2.2型芯加工仿真33 5.3软件仿真43 5.4后处理44 总结49 致谢50 参考文献51