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1、密級(jí)：FDM型3D打印機(jī)機(jī)械結(jié)構(gòu)設(shè)計(jì)DesignofMechanicalStructureforFDM-type3DPrinter學(xué)院：專(zhuān)業(yè)班級(jí)：學(xué)號(hào)：學(xué)生姓名：指導(dǎo)教師：II摘要課題以FDM型3D打印機(jī)機(jī)械結(jié)構(gòu)設(shè)計(jì)為主要工作。通過(guò)對(duì)3D打印機(jī)機(jī)械結(jié)構(gòu)分析及設(shè)計(jì)，實(shí)現(xiàn)3D打印機(jī)在工作過(guò)程中所需要的機(jī)械運(yùn)動(dòng)。實(shí)現(xiàn)3D打印機(jī)的機(jī)械運(yùn)動(dòng)后，便可滿(mǎn)足3D打印機(jī)打印功能的基本要求。在設(shè)計(jì)中，首先了解3D打印機(jī)的功能及工作原理，進(jìn)而分析3D打印機(jī)在工作過(guò)程中需要實(shí)現(xiàn)怎樣的機(jī)械運(yùn)動(dòng)，從而思考怎樣的機(jī)械結(jié)構(gòu)能實(shí)現(xiàn)所需要的機(jī)械運(yùn)動(dòng)。列出可
2、以采用的幾種方案，論述所列方案的優(yōu)缺點(diǎn)、機(jī)構(gòu)實(shí)現(xiàn)的難易程度及各個(gè)方案的機(jī)械結(jié)構(gòu)的合理性，在綜合考量各個(gè)方案后選出相對(duì)合理的提案，并進(jìn)行機(jī)械結(jié)構(gòu)的設(shè)計(jì)。3D打印機(jī)在工作過(guò)程中，主要應(yīng)實(shí)現(xiàn)X、Y、Z三個(gè)方向的機(jī)械運(yùn)動(dòng)。因此，所設(shè)計(jì)的3D打印機(jī)的機(jī)械結(jié)構(gòu)應(yīng)達(dá)到X、Y、Z三個(gè)方向平動(dòng)的要求。在設(shè)計(jì)過(guò)程中通過(guò)對(duì)3D打印機(jī)的觀看，結(jié)合其他機(jī)床實(shí)現(xiàn)機(jī)械運(yùn)動(dòng)的方法，從而得出自己最終要選擇的設(shè)計(jì)方案。設(shè)計(jì)過(guò)程中首先列出幾種傳動(dòng)方案，如齒輪傳動(dòng)，齒條傳動(dòng)，齒形帶傳動(dòng)及絲杠等。通過(guò)對(duì)各種機(jī)構(gòu)實(shí)現(xiàn)傳動(dòng)的特點(diǎn)進(jìn)行分析、所設(shè)計(jì)3D打印機(jī)外形尺寸的考
3、慮及各個(gè)方面的參考后，本次3D打印機(jī)的設(shè)計(jì)，最終選擇通過(guò)絲杠、導(dǎo)軌及導(dǎo)柱等實(shí)現(xiàn)3D打印機(jī)的機(jī)械運(yùn)動(dòng)。動(dòng)力傳動(dòng)選擇伺服電機(jī)通過(guò)聯(lián)軸器與導(dǎo)軌直連實(shí)現(xiàn)。關(guān)鍵詞：FDM；3D打印機(jī)；齒型帶傳動(dòng)IIIAbstractThetopicofmygraduateddesignisFDM3Dprintersmechanicaldesign.3Dobjectisachievedbytheworkoftheanalysisanddesignofthemechanicalstructureoftheprintertoachieve3Dprint
4、erduringoperationofthemechanicalmovementrequired.whenachievedthemechanicalmovement,youcanmeetthebasicrequirementsof3Dprinterfunctions.Inthedesignofthecourse,Igetthemeaningofthefunctionandoperationprinciple3Dprinter,3Dprinteratfirst.Thenanalyzedintheworkprocesstoa
5、chievewhatneedstomechanicalmotion,thusweneedtothinkwhatmechanicalstructureabouthowtoachievetherequiredmechanicalmovement.Thenlistsseveraloptionscanbeusedandthinkingtheadvantagesanddisadvantagesarelistedintheprogramandthedegreeofdifficultytoachieveadvantagesanddis
6、advantagesofthevariousagenciesandprogramsimplementedinvariousprogramsaftercomprehensiveconsiderationoftheproposaltoelectarelativelyreasonable,andmechanicalDesign.3Dprintersinthecourseoftheirwork,mainlytobeachievedthreedirectionsmechanicalmovementofX,Y,Z.Thus,them
7、echanicalstructureoftheprintershouldbedesignedtoachieve3DX,Y,Zthreemovableparalleltothedirectionrequired.Bywatchinginthedesignprocessa3Dprinter,combinedwithothermethodstoachievethemechanicalmovementofthemachine,togetthefinaldesign.Severaldesignprocessislistedfirs
8、ttransmissionscheme,suchasgears,rackdrive,beltdriveandscrewandsoon.Considerandrefertovariousaspectsofthe3Dprinterdimensionsachievedthroughavarietyofagenciestoa
