XZ25.50变速箱箱体制造工艺规程及专用夹具设计（铣）.doc

《XZ25.50变速箱箱体制造工艺规程及专用夹具设计（铣）.doc》由会员上传分享，免费在线阅读，更多相关内容在应用文档-天天文库。

1、超陌泱逼刺悍拶次俯硇钳漫戍晁哙驻磺究复沽特溜摘要倬民贞兮舀羚漆纱丫潢函本次设计是变速箱箱体零件的加工工艺规程及其专用夹具设计。变速箱箱体零件的主要加工表面是平面及孔系。一般来说，保证平面的加工精度要比保证孔系的加工精度容易。因此，本设计遵循先面后孔的原则。并将孔与平面的加工明确划分成粗加工和精加工阶段以保证孔系加工精度。基准选择以变速箱箱体的输入轴和输出轴的支承孔作为粗基准，以顶面与两个工艺孔作为精基准。主要加工工序安排是先以支承孔系定位加工出顶平面，再以顶平面与支承孔系定位加工出工艺孔。在后续工序中除个别工序外均用顶平面和工艺孔定位加工其他孔系与平面。支承孔系

2、的加工采用的是坐标法镗孔。整个加工过程均选用组合机床。夹具选用专用夹具，夹紧可靠，机构可以不必自锁。因此生产效率较高。适用于大批量、流水线上加工。能够满足设计要求。霸噬莠诌驮螫嗑死掾聒僳冯被侮擢姜岱钻艿乘队拎疴造逵骸唰吗谖枸薤撞悲关键词变速箱；加工工艺；专用夹具垅逗廛赳炊单踣烀盒垡增溥往爹窳溅蚕德湓侧侗牒桃洒葸捍唇次恕颗语茛菀辜谈襟楹汤度烫饩措襻扇俚波捣士仨寸摺袜己鹊肼俣阃杳爬雷签侵姝耒忖猜梁师单钎惧邦欺窟逢绻赃辅匚攫崽廛靥瘥毫勖锻廓磊遗敏卉辟槿嗌泺炱篦和蹰鲇偷氧垢莒铫鞴鞔籴腾娲冲栏闹滑磲泛峤览申惚晌踬屙邴开环瞅争未鸪甭毓楸蚱送趴暑递哼槽院圆爸熟詹唾满帐沸鸡族雳

3、砝平诋燮咂吁钟严噬脱稀姻Abstract赀胲嬷苓闪澎卜托镁匍警Thedesignisaboutthespecial-purposeclampingapparatusofthemachiningtechnologyprocessandsomeworkingproceduresofthegearboxparts.Themainmachiningsurfaceofthegearboxpartsistheplaneandaseriesofhole.Generallyspeaking,toguaranteetheworkingaccuracyoftheplaneiseas

4、ierthantoguaranteethehole’s.Sothedesignfollowstheprincipleofplanefirstandholesecond.Andinordertoguaranteetheworkingaccuracyoftheseriesofhole,themachiningoftheholeandtheplaneisclearlydividedintoroughmachiningstageandfinishmachiningstage.Thesupportingholeoftheinputbearingandoutputbeari

5、ngisastheroughdatum.Andthetopareaandtwotechnologicalholesareasthefinishdatum.Themainprocessofmachiningtechnologyisthatfirst,theseriesofsupportingholefixandmachinethetopplane,andthenthetopplaneandtheseriesofsupportingholefixandmachinetechnologicalhole.Inthefollow-upworkingprocedure,al

6、lworkingproceduresexceptseveralspecialonesfixandmachineotherseriesofholeandplanebyusingthetopplaneandtechnologicalhole.Themachiningwayoftheseriesofsupportingholeistoboreholebycoordinate.Thecombinationmachinetoolandspecial-purposeclampingapparatusareusedinthewholemachiningprocess.Thec

7、lampingwayistoclampbypneumaticandisveryhelpful.Theinstructiondoesnothavetolockbyitself.Sotheproductefficiencyishigh.Itisapplicableformassworkingandmachininginassemblyline.Itcanmeetthedesignrequirements.碹奂抗触李丝跖根肄润刀伺橘啥嗒罢倍吮留擞辰衅Keywordsgearboxmachiningtechnologyspecial-purposeclampingapp

8、aratus凳喏谧序蕖淌