Kev sib hloov thiab cam mechanism

Lub chaw ua hauj lwm ntawm feem ntau txiv neej-ua mechanisms raws li nyob rau hauv lub muab lub zog. Tej zaum, menyuam los ntawm lub lag luam ntawm tej tshuab (nyob rau hauv cov ntaub ntawv no, lub ntsiab lus tsis muaj tsheb, thiab lub mechanism), tej zaum nws yuav zoo li hais tias muaj yog tsis muaj kev sib hloov, txawm li cas los, feem ntau nws yog thawj lub tswv yim yog dag ntxias. Lub fact tias muaj ntau cov cav tov siv txawv kev daws teeb meem los hloov tus thawj cim ntawm lub zog nyob rau hauv lub lwm yam ntawm nws hom. Ib tug ntawm cov feem ntau cov tawm piv txwv - nws yog ib tug cam mechanism. Nrog nws ua tau "txais" los ntawm teb tsab ntawv tsa suab reciprocating los yog qev. Raws nraim qhov twg peb ua tau raws li cov cam mechanism?

uas tsis yog-cuab kev tseeb

Yeej, txhua txhua tsev neeg muaj cov kev tsim nyog cuab yeej xws li hluav taws xob xyaum tej yam: nyob rau hauv nws lub cev muaj ib tug tshwj xeeb hloov uas tso cai rau koj los mus xaiv cov hom kev lag luam - tsuas yog kev sib hloov ntawm lub laum ntsis los yog ib tug hnyav-recurrent xaav nrog rau cov kev sib hloov. Nyob rau hauv thawj cov ntaub ntawv, cov lus nug tshwm sim: lub electric tsav ntawm ib tug ncej thiab gearbox hloov ib feem ntawm nws ceev laum. Tab sis dab tsi tshwm sim thaum lub xuas nrig ntaus hom yog muab rau? Tsis muaj dab tsi nyuab - cia li tuaj mus rau hauv kev txiav txim cam mechanism uas converts ib feem ntawm lub torque mus rau ib tug kab rov tav xaav. Xws li ib tug tov yog siv nyob rau hauv ntau cov cuab yeej thiab khoom vaj khoom tsev. Tsis tas li ntawd peb tsis muaj tej tswv yim ua yuav tsis tau lub hav zoov ntawm Internal combustion xyaw nyob rau hauv lawv cov classic daim ntawv.

Tej yam yooj yim tsim thiab tsis muaj nqi - yog lub ntsiab zoo xws li cov neeg kho tshuab transducers. Yog li muaj ib tug disadvantage - yog hais tias lub Actuator yog ntau siab (kuj mus tsab ntawv tsa suab), lub ntsiab tej zaum yuav puas ntsoog. Piv txwv li, rau cov xyaum rauj ua sufficiently thaum drilling lub qhov heev xav nias mus rau qhov chaw ntawm lub laum, zoo thaiv cov hlab nws cov Translational zog.

Los ntawm cov piv txwv xyaum

Cov cam mechanism yog ib tug ntawm cov ntau ntau yam ntawm kinematic khub, muaj raws ntawm tsuas yog ob tug units (lub xub ntiag ntawm lub khib yog rub) - thiab lub cam follower. Lub nto ntawm lub yav tas, nyob rau hauv uas tus swb yog tsim ib tug zoo li tus, uas tso cai rau mus rau kis tsab ntawv tsa suab mem tes ua khub nrog nws voom. Lub cams tej zaum yuav ntau daim :. pav ca, cylindrical, kheej kheej, complex spatial configuration, thiab lwm yam li, sib cais yog tau los ntawm tsuas yog ob tug generalizing pab pawg neeg - spatial thiab planar.

Xav txog yuav ua li cas rau tsim ib tug yooj yim cam mechanisms ntawm lub tiaj hom. Lub tso zis unit yuav tsiv mus nyob ob leeg translationally (slider) thiab lub pivot (rocker). Sab-theem nyob rau hauv kev sib cuag nrog lub cam rau txo tej kev coj tej zaum yuav tsim raws li ib tug dav hlau, ib tug hemisphere, los yog lub ntsis yog muab nrog ib tug menyuam.

Nyob rau hauv cov ntaub ntawv ntawm tus swb cam nrog lub qe zoo li tus ntoo khaub lig seem yog rotated ib ncig ntawm nws axis. Txij li thaum lub daim ntawv no yog txawv los ntawm lub ntau yam, lub saum ntawm cov menyuam tappet yog tsa, ua ib tug pem hauv ntej zog raws daim ntawv qhia ntsia. Lub caij txom nyem sab saum toj - thiab video mus down, rov qab rov qab link. Tus tsim nrog ib tug quab ntaus ntawv yog deprived ntawm phau ntawv no, yog li cov menyuam kiag li "dov" nyob rau cam uas ua rau lub hloov neeg nyob rau hauv raws li cov kev sib hloov axis.

Txhim khu kev qha lag luam ntawm lub cam mechanism yog tsuas tau thaum ib tug muaj kev ruaj ntseg hu rau ntawm lub voom thiab cov cam. Yuav kom daws tau qhov teeb meem no siv ntau le caag: lub qhov zis neeg ua tau ib tug caij nplooj ntoos hlav-loaded; nyob rau hauv lub cev ntawm lub rotating qhov chaw ua lub zawj nyob rau hauv uas tsau tappet cov menyuam. Sheer so tej zaum yuav tso cai rau cov menyuam kuav los tiag es tsis txhob ntawm kho ntawm ib tug taw tes.

Synthesis ntawm lub cam mechanism uas yuav tsum tau rau caij nyoog xaiv uas yuav tsum tau hauj txheej txheem tsis. Ua ntej, nws tsim ib tug yam ntxwv ib feem ntawm lub tswvyim, uas yuav siv sij hawm mus rau hauv tus account lub xov tooj ntawm kinematic officers, mus, thiab lawv degree ntawm txoj kev ywj pheej, hom kev sib txuas. Cov theem tom ntej - lub metric. Nyob ntawm seb cov yam tsis raug xaiv qhov ntev ntawm qhov yooj yim hais. Qhov no yuav siv sij hawm mus rau hauv tus account lub feem ntau muaj kuab hauv daim ntawv ntawm ib tug cam, tus quab yuam ntawm cov vertices, cov ntaub ntawv uas noj los tsim cov qauv siv.