机械5

摘要 机械加工工艺规程设计和机床专用夹具设计在零件生产制造中有着很重要的作用。制定可行的机械加工工艺路线和设计合理的夹具才可确保零件的加工质量，生产出合格的产品。本设计的内容可分为机械加工工艺规程设计和机床专用夹具设计两大部分。先对B6065刨床推动架零件进行了详细的分析，了解其作用及加工要求。制定了两套工艺路线，通过分析、比较，最终确定了工艺路线方案，确定出加工余量和工序尺寸，选择了合适的加工设备，确定出了切削用量，计算了加工所需的基本工时。又运用夹具设计的基本原理和方法，拟定夹具设计的方案，针对零件加工中的钻扩铰Φ10mm及Φ16mm孔工序设计了专用夹具。本设计的加工工艺合理，夹具可行、高效、省力，能满足零件的加工要求，保证其加工质量。 关键词：机械加工；工艺规程；专用夹具；推动架 Abstract The desig
n of machi
ni
ng process pla
n
ni
ng a
nd fixture desig
n plays a
n importa
nt role i
n parts ma
nufacturi
ng. O
nly by establishi
ng feasible machi
ni
ng process route a
nd desig
ni
ng reaso
nable fixture ca
n the machi
ni
ng quality of parts be e
nsured a
nd qualified products ca
n be produced. The co
nte
nt of this desig
n ca
n be divided i
nto two parts: machi
ni
ng process desig
n a
nd fixture desig
n. Firstly, the parts of B6065 pla
ner's pushi
ng frame are a
nalyzed i
n detail to u
ndersta
nd its fu
nctio
n a
nd processi
ng requireme
nts. Through a
nalysis a
nd compariso
n, two sets of process routes are established. The machi
ni
ng allowa
nce a
nd process size are determi
ned. The appropriate machi
ni
ng equipme
nt is selected, the cutti
ng parameters are determi
ned, a
nd the basicworki
ng hours are calculated. Accordi
ng to the basic pri
nciple a
nd method of fixture desig
n, the scheme of fixture desig
n isworked out, a
nd the special fixture is desig
ned for the process of drilli
ng a
nd reami
ngΦ 10 mm a
ndΦ 16 mm hole i
n the machi
ni
ng of parts. The processi
ng tech
nology of this desig
n is reaso
nable, the fixture is feasible, efficie
nt a
nd labor-savi
ng,which ca
n meet the processi
ng requireme
nts of parts a
nd e
nsure the processi
ng quality. Keywords: machi
ni
ng; process specificatio
n; special fixture; pushi
ng frame 目录 摘要I Abstract II 1绪论1 1.1题目背景和研究意义1 1.2国内外相关研究情况1 1.2.1发展历史1 1.2.2发展现状、趋势2 1.3本课题研究的主要内容4 2零件的分析5 2.1零件的作用和结构5 2.2零件的工艺分析5 2.3零件的生产纲领7 3机械加工工艺规程设计8 3.1零件表面加工方法的选择8 3.2制定机械加工工艺路线8 3.3工艺方案的比较与分析9 3.4工序尺寸的确定11 3.5加工余量的确定12 3.6选择加工设备与工艺设备13 3.6.1机床的选择13 3.6.2夹具的选择13 3.6.3刀具的选择13 3.6.4量具的选择14 3.7切削用量及基本时间的确定14 3.7.1工序3的设计14 3.7.2工序4的设计15 3.7.3工序5的设计18 3.7.4工序6的设计21 3.7.5工序7的设计25 3.7.6工序8的设计28 3.7.9工序11的设计35 3.7.10工序12的设计37 4钻φ10孔专用夹具设计38 4.1任务书指定工序38 4.2设计方案的讨论38 4.3零件分析和定位基准的确定38 4.4夹具结构作用： 38 4.5夹具的特点： 38 4.6定位误差的计算38 4.7夹具的主要技术条件及优缺点的分析39 4.8夹具主要零件技术条件的分析39 结论40 参考文献41 致谢42