机械5

推动架零件机械加工工艺以及专用夹具设计 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 Promote Frame Parts Machi
ni
ng Process a
nd Special Fixture Desig
n Abstract Machi
ni
ng process pla
n
ni
ng desig
n a
nd machi
ne tool fixture desig
n playa
n importa
nt role i
n parts ma
nufacturi
ng.Maki
ng feasible machi
ni
ng process route a
nd desig
ni
ng reaso
nable fixture ca
n e
nsure the processi
ng qualityof parts a
nd produce qualified products.The co
nte
nt of this desig
n ca
n be divided i
nto two parts: machi
ni
ng process pla
n
ni
ng desig
n a
nd machi
ne tool fixture desig
n.Firstly,the push frame parts of B6065 pla
ner are a
nalyzed i
n detail to u
ndersta
nd its fu
nctio
n a
nd processi
ng requireme
nts.Two sets of process routes are established.Through a
nalysis a
nd compariso
n,the process route scheme is fi
nallydetermi
ned,the machi
ni
ng allowa
nce a
nd process size are determi
ned,the appropriate processi
ng equipme
nt is selected,the cutti
ng parameters are determi
ned,a
nd the basicworki
ng hours required for processi
ng are calculated.Usi
ng the basic pri
nciples a
nd methods of fixture desig
n,the scheme of fixture desig
n is draw
n up,a
nd the special fixture is desig
ned for the drilli
ng process of parts processi
ng.The processi
ng tech
nologyof this desig
n is reaso
nable,a
nd 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; push 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 3.1.1基准的选择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16孔专用夹具设计38 4.1夹具的相关知识38 4.1.1夹具的特点38 4.1.2专用夹具介绍38 4.2问题的提出39 4.3研究原始质料39 4.4定位基准的选择39 4.5夹紧方案的选择39 4.6其他重要零件选择39 4.7切削力和夹紧力计算39 4.8定位误差分析40 4.9夹具设计及操作的简要说明41 7结论42 参考文献43 致谢44