Servo tsav ntawm CNC spinning tshuab pub system
Hauv servo pub cov txheej txheem ntawm cov menyuam roj hmab tig ntawm CNC spinning tshuab, servo tsav yog qhov tseem ceeb tivthaiv. Nws txais cov cim teeb liab pub xa los ntawm cov lej kev tswjhwm tus lej thiab hloov nws mus rau hauv lub kaum tsis hloov lossis hloov chaw, yog li tsav lub qeeb mentshis kev sib tw tsheb kom ua tiav qhov kev xav tau.
Lub servo tsav yuav tsum ua tau raws li cov kev xav tau hauv qab no
①Qhov kev tshem tawm qhov tseeb yog qhov siab, uas yog, qhov txawv ntawm qhov txawv txav tiag tiag thiab cov kev hais kom hloov chaw yog tsawg.
②Nws muaj lub peev xwm loj dhau mus ntev rau cov sij hawm ntev kom tau raws li qhov yuav tsum tau ua ntawm kev nrawm qis thiab qhov ntsuas loj. Feem ntau, DC servo motor xav kom muaj tshaj ntawm 4 rau 6 zaug hauv ob peb feeb yam tsis muaj kev puas tsuaj.
③Qhov ntau ntawm qhov nrawm yog dav, thiab lub cev muaj zog tuaj yeem khiav tau zoo los ntawm qhov qis tshaj plaws mus rau qhov siab tshaj plaws, thiab qhov ntsuas qhov hloov pauv me me, tshwj xeeb tshaj yog nyob ntawm qhov nrawm (xws li 1 r / min, lossis qis dua), qhov nrawm yog qhov ruaj khov thiab tsis muaj kev tshwm sim nkag.
④Yuav tuaj yeem tiv thaiv nquag pib thiab thim rov qab tom qab braking
Tam sim no, hauv kev kaw lub voj pub servo system ntawm CNC spinning tshuab, servo tsav tshuab feem ntau siv AC thiab DC servo motors, thiab AC servo motors maj mam tsim lub ntsiab. Stepper motors (mas zog hom stepper motors) tsuas yog siv rau qee qhov me me thiab nyiaj txiag qhib lub voj CNC spinning tshuab.
(1) Stepper lub cev muaj zog
Stepper lub cev muaj zog yog ib qho actuator uas tswj los ntawm hluav taws xob mem tes teeb liab thiab hloov hluav taws xob cov mem tes hluav taws xob rau hauv cov hluav taws xob sib txawv angular. Lub kaum sab xis hloov mus los yog sib npaug nrog cov xov tooj ntawm cov hluav taws xob, thiab qhov ceev nrawm yog sib luag rau cov zaus ntawm cov hluav taws xob pulses. Lub nrawm ntawm lub cev muaj zog tuaj yeem hloov kho los ntawm hloov cov mem tes zaus. Yog hais tias qhov cua ntawm qee qib txuas ntxiv nyob twj ywm tom qab kaw, lawv muaj peev xwm tus kheej-ntsuas phoo. Lub stepper lub cev muaj qhov chaw ruaj khov ntawm cov kauj ruam ib qho kev hloov pauv, thiab raws li nws cov kauj ruam yuam kev yuav tsis ntxiv.
(2) DC servo lub cev muaj zog
DC servo motor muaj qhov pib zoo, braking thiab ceev cov kev cai tus yam ntxwv, uas tuaj yeem pab txhawb tus txiv neej tsis ncaj ncaj ceev nyob hauv qhov ntau. Tshwj xeeb yog qhov loj inertia thiab dav nrawm DC servo motor tsim nyob rau hauv 1970 s muaj ntau yam zoo, thiab nws tau siv dav hauv CNC tshuab cov cuab yeej thiab CNC spinning tshuab. Cov inertia loj thiab dav nrawm DC servo motors tau muab faib ua ob hom: kev siv tshuab hluav taws xob thiab cov hlau nplaum txuas mus tas li. Tab sis qhov tom kawg yog txoj kev coj los ntawm tom kawg (ruaj khov hlau nplaum hom) lub cev muaj zog.
(3) AC servo lub cev muaj zog
Txij li thaum 1980 s, AC servo tsav thev naus laus zis tau ua kev txhim kho. Raws li kev txheeb cais, Lub teb chaws Yelemees' s 1988 tshuab cuab tam pub tsav tshuab tau tso nyiaj rau 80% ntawm AC servo lub cev muaj zog tsav. Piv nrog DC lub cev muaj zog, AC lub cev muaj cov yam ntxwv ntawm me rotor inertia, cov lus teb zoo dynamic, pawg me, lub peev xwm loj, kev kub ceev, thiab lwm yam, uas tuaj yeem ua tiav tau zoo tswj kev ua tau zoo. AC servo lub cev muaj zog tuaj yeem faib ua AC asynchronous (induction) motors thiab AC synchronous lub cev muaj zog. Tam sim no, dej-sib nqus AC synchronous servo motors feem ntau siv hauv kev pub tsav ntawm CNC tshuab cuab yeej.
Lub tshuab hlau CNC tig uas tau tsim los ntawm Prosper txhua tus siv Siemens servo motors los lav cov haujlwm yooj yim, kev ua haujlwm zoo servo thiab kev ntseeg tau kev txav chaw.
