Injini ndi gawo lofunikira kwambiri pamagetsi3D printer, kulondola kwake kumagwirizana ndi zotsatira zabwino kapena zoipa za 3D yosindikizira, nthawi zambiri kusindikiza kwa 3D pogwiritsa ntchito stepper motor.
Ndiye pali osindikiza a 3D omwe amagwiritsa ntchito ma servo motors? Ndizodabwitsa komanso zolondola, koma bwanji osazigwiritsa ntchito pa osindikiza wamba a 3D?
Chobweza chimodzi: ndi okwera mtengo kwambiri! Poyerekeza ndi osindikiza wamba 3D sikoyenera. Ngati ndi bwino osindikiza mafakitale ndi zambiri kapena zochepa yemweyo, akhoza kusintha kulondola pang'ono.
Apa titenga ma motors awiriwa, kusanthula mwatsatanetsatane kofananiza kuti tiwone kusiyana kwake.
Matanthauzo osiyanasiyana.
Stepper motorndi discrete zoyenda chipangizo, ndi osiyana wamba AC ndiDC motere, ma motors wamba kumagetsi kuti atembenuke, koma stepper motor sichoncho, stepper motor ndi kulandira lamulo kuti achite sitepe.
Servo motor ndi injini yomwe imayang'anira magwiridwe antchito amakina mu servo system, yomwe imatha kupangitsa liwiro lowongolera, kulondola kwamalo kukhala kolondola kwambiri, ndipo imatha kusintha siginecha yamagetsi kukhala torque ndi liwiro kuyendetsa chinthu chowongolera.
Ngakhale kuti ziwirizi ndizofanana mumayendedwe owongolera (chingwe cha pulse ndi chizindikiro chowongolera), pali kusiyana kwakukulu pakugwiritsa ntchito magwiridwe antchito ndi nthawi zogwiritsira ntchito. Tsopano kufananiza kugwiritsa ntchito machitidwe awiriwa.
Kuwongolera kulondola ndi kosiyana.
Awiri-gawohybrid stepper motorsitepe ngodya zambiri , 1.8 °, 0,9 °
Kuwongolera kulondola kwa injini ya AC servo kumatsimikiziridwa ndi encoder yozungulira kumbuyo kwa shaft yamoto. Kwa Panasonic digito yokwanira ya AC servo motor, mwachitsanzo, ya injini yokhala ndi encoder ya mizere 2500, kugunda kofanana ndi 360 °/10000=0.036 ° chifukwa chaukadaulo wama frequency anayi omwe amagwiritsidwa ntchito mkati mwagalimoto.
Kwa mota yokhala ndi encoder ya 17-bit, drive imalandira 217=131072 pulses pa motor revolution, zomwe zikutanthauza kuti kugunda kwake ndi 360°/131072=9.89 masekondi, omwe ndi 1/655 ya kugunda kofanana ndi stepper motor yokhala ndi ngodya ya 1.8 °.
Makhalidwe osiyanasiyana otsika pafupipafupi.
Stepper motor pa liwiro lotsika adzawoneka otsika pafupipafupi kugwedera chodabwitsa. Kuthamanga kwafupipafupi kumayenderana ndi kuchuluka kwa katundu ndi momwe galimotoyo imayendera, ndipo nthawi zambiri imatengedwa kuti ndi theka la ma frequency oyambira osanyamula katundu.
Chochitika chotsika kwambiri chogwedezeka chomwe chimatsimikiziridwa ndi mfundo yogwirira ntchito ya stepper motor ndizovuta kwambiri pakugwira ntchito kwamakina. Ma stepper motors akamagwira ntchito mothamanga kwambiri, ukadaulo wotsitsa uyenera kugwiritsidwa ntchito kuthana ndi kutsika kwafupipafupi kugwedezeka, monga kuwonjezera ma dampers pamototo, kapena kugwiritsa ntchito ukadaulo wogawirana pagalimoto.
The AC servo motor imayenda bwino kwambiri ndipo simanjenjemera ngakhale pa liwiro lotsika. AC servo dongosolo ali ndi resonance kupondereza ntchito, amene angathe kuphimba kusowa kwa kuuma kwa makina, ndi dongosolo ali mkati pafupipafupi kusamvana ntchito, amene amatha kudziwa resonance mfundo ya makina ndi atsogolere kusintha dongosolo.
Zochita zosiyanasiyana.
Stepper galimoto kulamulira ndi lotseguka- kuzungulira kulamulira, mkulu kwambiri pafupipafupi poyambira kapena lalikulu kwambiri katundu sachedwa chodabwitsa cha masitepe otaika kapena kutsekereza, kuthamanga kwambiri pamene kuima ndi sachedwa overshoot, kotero kuonetsetsa ulamuliro wake molondola, ayenera kuthana ndi vuto la liwiro mmwamba ndi pansi.
AC servo pagalimoto dongosolo chatsekedwa- kuzungulira, dalaivala akhoza mwachindunji chitsanzo galimoto encoder ndemanga siginecha, zikuchokera mkati mwa malo kuzungulira ndi liwiro kuzungulira, kawirikawiri sizidzawoneka stepper galimoto imfa ya sitepe kapena overshoot chodabwitsa, ulamuliro ntchito ndi odalirika.
Mwachidule, dongosolo la AC servo muzinthu zambiri zogwirira ntchito ndilabwino kuposa mota ya stepper. Koma nthawi zina zosafunika kwenikweni nthawi zambiri amagwiritsa ntchito stepper motor kuti aphedwe. Chosindikizira cha 3D ndi nthawi yovuta kwambiri, ndipo injini ya servo ndiyokwera mtengo kwambiri, kotero kusankha wamba kwa stepper motor.
Nthawi yotumiza: Feb-05-2023