Yuav tsum muaj cov tshuab CNC ciaj rau AC servo system
Lub tshuab servo yog ib feem tseem ceeb ntawm lub tshuab CNC tshuab. Qhov tseeb thiab ceev indicators ntawm lub tshuab CNC cav feem ntau txiav txim siab los ntawm kev pabcuam (servo system). Cov kev pabcuam (servo system) tau dhau mus ntawm theem xa mus rau DC servo thiab ces mus rau qhov kev pabcuam kev ua haujlwm AC servo system . Nrog rau txoj kev siv technology, txoj kev tsav ntawm high-speed thiab high-precision machining tau los ua ib tug qauv tshiab nyob rau hauv txoj kev loj hlob ntawm cov kev pab cuam servo. CNC tshuab cuab yeej yuav tsum muaj cov ntsiab lus hauv qab no:
(1) Kev ruaj ntseg zoo: Kev ruaj ntseg txhais tau hais tias lub system tuaj yeem ncav cuag los yog rov qab mus rau qhov qub nruab nrab ntawm lub xeev tom qab kev hloov me ntsis hauv cov tswv yim muab los yog lwm yam teeb meem.
(2) Qhov chaw tso zis ntau yog qhov siab: qhov tseeb ntawm qhov system servo yog qhov tseeb uas cov zis muaj peev xwm ua raws li cov nqi nkag. Raws li ib tug precision machined CNC tshuab cuab yeej, qhov yuav tsum tau muab qhov tseeb los yog contour machining qhov tseeb. Feem ntau, qhov sib txawv ntawm qhov sib txawv yog feem ntau ntawm 0.01 thiab 0.00lmm. Feem ntau yuav tsum muaj qhov chaw siab tshaj plaws thiab rov ua qhov tseeb, qhov ntawd yog, qhov yuam kev qhov teebmeem thiab rov muab qhov teebmeem rov qab yog me me (los xyuas kom meej ). Dynamically, cov lus nug nram qab no yog yuav tsum tau, uas yog, qhov yuam kev li nram qab no me me, uas yog qhov qhia tau zoo rau qhov kev ua tau zoo (kom muaj kev sib txuas lus ntawm cov teeb meem). Tsis tas li ntawd, qhov tseem ceeb yuav tsum muaj siab txaus kom muaj kev sib kho siab.
(3) Yoojyim teb, ceev teb thiab tsis muaj overshoot: Ceev teb yog ib qho ntawm cov kev lag luam zoo ntawm qhov kev pab cuam servo, uas yog, cov lus teb ntawm cov lus ceeb toom cov lus ceeb toom yuav tsum ceev, ntawm qhov one, cov yuav tsum tau hloov. Cov sijhawm ua luv luv, feem ntau tsawg dua 200ms, los sis txawm tsawg dua kaum tawm milliseconds; ntawm qhov tod tes, yuav kom ua tau raws li qhov kev xav tau ntawm overshoot, nyob rau ntawm ntug kev ntawm txoj kev hloov txheej txheem yuav tsum tau ntxhab, uas yog, tus nqi nce yog loj. Qhov no yog qhov yuav tsum tau ac servo system dynamic performance, uas yog, tsis muaj overshoot, lub sij hawm tp ntawm kev khiav ceev ntawm tus txheem ua tus tsim yuav tsum yog luv li sai tau. Feem ntau nws yuav tsum yog los ntawm 0 → Fmax (Fmax → 0), nws lub sijhawm yuav tsum yog 200ms, thiab yuav tsis muaj overshoot, txwv tsis pub nws tsis zoo rau cov khoom siv thiab qhov teeb meem rau kev ua haujlwm zoo.
(4) Cov kev khiav ceev yuav tsum dav thiab muaj kev ruaj ntseg zoo (hauv kev cai tswj ceev ceev). Kev kub ceev: Feem ntau yuav tsum muaj: Kev ruaj ntseg txhais tau hais tias tsis muaj kev hloov ntawm cov zis, tshwj xeeb tshaj yog thaum qeeb qeeb, nws tseem ceeb heev.
(5) Cov yam ntxwv ntawm load yuav tsum nyuab. Hauv qhov system qhov ntau, qhov hloov ntawm qhov hloov, qhov zis yuav tsum yog tib yam. Ntawd yog, ΔF tseem muaj tsawg li tsawg tau; Thaum twg qhov kev thauj yog abrupt, lub sij hawm rov los ntawm qhov yuav tsum tau ceev yog luv luv thiab tsis muaj oscillation. Ntawd yog, Δt yog luv li sai tau; tsis tas li ntawd, yuav tsum muaj peev xwm txaus tshaj. Qhov no yuav tsum tau siv rau lub tshuab CNC lub cuab yeej pabcuam kom muaj kev zoo thiab zoo nruj.
(6). Nws tuaj yeem hloov tau thiab nquag pib thiab nres.
(7). Lub kaw lus muaj kev ntseeg siab, kho yooj yim thiab pheej yig.
Tawm tswv yim: qhov uas yuav tsum muaj rau qhov system servo muaj xws li ob qho tib si static thiab dynamic yam ntxwv; rau cov cuab yeej siv high-precision CNC tshuab, qhov kev ua haujlwm ntawm kev ua tau zoo zog yog nruj dua.