{"id":3361,"date":"2026-05-14T05:24:32","date_gmt":"2026-05-14T05:24:32","guid":{"rendered":"https:\/\/sprocket-chain.net\/?p=3361"},"modified":"2026-05-14T05:24:32","modified_gmt":"2026-05-14T05:24:32","slug":"what-is-a-chain-and-sprocket-system-and-how-does-it-work","status":"publish","type":"post","link":"https:\/\/sprocket-chain.net\/cs\/what-is-a-chain-and-sprocket-system-and-how-does-it-work\/","title":{"rendered":"Co je to syst\u00e9m \u0159et\u011bzu a \u0159et\u011bzov\u00e9ho kola a jak funguje?"},"content":{"rendered":"
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Co je to syst\u00e9m \u0159et\u011bzu a \u0159et\u011bzov\u00e9ho kola a jak funguje?<\/h1>\n

\u0158et\u011bzov\u00fd pohon s ozuben\u00fdm kolem p\u0159en\u00e1\u0161\u00ed v\u00fdkon s vy\u0161\u0161\u00ed \u00fa\u010dinnost\u00ed a v\u011bt\u0161\u00ed toleranc\u00ed v\u016f\u010di r\u00e1z\u016fm ne\u017e v\u011bt\u0161ina alternativ \u2013 ale pouze tehdy, je-li syst\u00e9m spr\u00e1vn\u011b dimenzov\u00e1n. V\u011bt\u0161ina poruch pohonu nepoch\u00e1z\u00ed z nekvalitn\u00edch komponent\u016f, ale z nesouladu mezi po\u017eadavky na pohon a zvolenou specifikac\u00ed.<\/p>\n

Zjist\u011bte dostupnost skladov\u00fdch z\u00e1sob pro va\u0161i specifikaci m\u011bni\u010de<\/a><\/p>\n<\/div>\n<\/div>\n

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Tchajwansk\u00fd v\u00fdrobce balic\u00edch stroj\u016f p\u0159e\u0161el z \u0159emenov\u00e9ho pohonu na syst\u00e9m v\u00e1le\u010dkov\u00fdch \u0159et\u011bz\u016f a \u0159et\u011bzov\u00fdch kol<\/strong> na jejich nov\u00e9 lince na uzav\u00edr\u00e1n\u00ed obal\u016f v roce 2023. Rozhodnut\u00ed bylo motivov\u00e1no jedin\u00fdm po\u017eadavkem: pohon musel udr\u017eovat p\u0159esn\u00e9 \u010dasov\u00e1n\u00ed p\u0159i kol\u00eds\u00e1n\u00ed zat\u00ed\u017een\u00ed 4:1 mezi pr\u00e1zdn\u00fdmi a pln\u00fdmi obaly. Testovan\u00fd \u0159emenov\u00fd pohon vykazoval kol\u00eds\u00e1n\u00ed rychlosti p\u0159i zat\u00ed\u017een\u00ed 1,5\u201321 TP3T \u2013 co\u017e je p\u0159ijateln\u00e9 pro mnoho aplikac\u00ed, ale ne pro stanici pro nan\u00e1\u0161en\u00ed lepidla, kde p\u0159esnost \u010dasov\u00e1n\u00ed p\u0159\u00edmo ovliv\u0148uje kvalitu ut\u011bsn\u011bn\u00ed. \u0158et\u011bzov\u00fd pohon, jakmile byl spr\u00e1vn\u011b dimenzov\u00e1n, b\u011b\u017eel konstantn\u00ed rychlost\u00ed bez ohledu na kol\u00eds\u00e1n\u00ed zat\u00ed\u017een\u00ed. To nen\u00ed marketingov\u00e9 tvrzen\u00ed \u2013 je to d\u016fsledek fungov\u00e1n\u00ed pohonu s pozitivn\u00edm z\u00e1b\u011brem.<\/p>\n

Pochopen\u00ed toho, co syst\u00e9m \u0159et\u011bzu a ozuben\u00e9ho kola<\/strong> Ve skute\u010dnosti to \u2013 mechanicky, nejen popisn\u011b \u2013 rozhoduje o tom, zda si napoprv\u00e9 spr\u00e1vn\u011b vyberete disk, nebo str\u00e1v\u00edte t\u0159i m\u011bs\u00edce \u0159e\u0161en\u00edm probl\u00e9m\u016f s diskem, kter\u00fd pro danou aplikaci nikdy nebyl vhodn\u00fd.<\/p>\n

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Co vlastn\u011b syst\u00e9m \u0159et\u011bzu a ozuben\u00e9ho kola d\u011bl\u00e1<\/h2>\n
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\u0158et\u011bzov\u00fd pohon s ozuben\u00fdm kolem je mechanick\u00fd syst\u00e9m p\u0159enosu v\u00fdkonu s pozitivn\u00edm z\u00e1b\u011brem. \u201ePozitivn\u00ed z\u00e1b\u011br\u201c znamen\u00e1, \u017ee zuby \u0159et\u011bzu fyzicky zapadaj\u00ed do zub\u016f ozuben\u00e9ho kola \u2013 nedoch\u00e1z\u00ed k prokluzov\u00e1n\u00ed, te\u010den\u00ed ani ke zm\u011bn\u00e1m rychlosti zp\u016fsoben\u00fdm kol\u00eds\u00e1n\u00edm zat\u00ed\u017een\u00ed. T\u00edm se odli\u0161uje od pohon\u016f zalo\u017een\u00fdch na t\u0159en\u00ed, jako jsou kl\u00ednov\u00e9 a ploch\u00e9 \u0159emeny, kde zv\u00fd\u0161en\u00ed zat\u00ed\u017een\u00ed zp\u016fsob\u00ed te\u010den\u00ed \u0159emenu po povrchu \u0159emenice, co\u017e vede k proporcion\u00e1ln\u00edmu sn\u00ed\u017een\u00ed rychlosti na hnan\u00e9m h\u0159\u00eddeli.<\/p>\n

Syst\u00e9m se skl\u00e1d\u00e1 minim\u00e1ln\u011b z hnac\u00edho ozuben\u00e9ho kola (namontovan\u00e9ho na vstupn\u00edm h\u0159\u00eddeli), hnan\u00e9ho ozuben\u00e9ho kola (namontovan\u00e9ho na v\u00fdstupn\u00edm h\u0159\u00eddeli) a v\u00e1le\u010dkov\u00fd \u0159et\u011bz<\/strong> spojuje je. Hnac\u00ed ozuben\u00e9 kolo p\u0159em\u011b\u0148uje rota\u010dn\u00ed moment na line\u00e1rn\u00ed ta\u017enou s\u00edlu na napnut\u00e9 stran\u011b \u0159et\u011bzu. \u0158et\u011bz p\u0159en\u00e1\u0161\u00ed tuto line\u00e1rn\u00ed s\u00edlu na hnan\u00e9 ozuben\u00e9 kolo, kde se p\u0159em\u011b\u0148uje zp\u011bt na rota\u010dn\u00ed moment na v\u00fdstupn\u00ed h\u0159\u00eddeli. Vztah mezi ob\u011bma h\u0159\u00eddeli \u2013 jejich pom\u011br ot\u00e1\u010dek a pom\u011br to\u010div\u00e9ho momentu \u2013 je zcela ur\u010den pom\u011brem po\u010dtu zub\u016f ozuben\u00e9ho kola.<\/p>\n<\/div>\n

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Vzorec pro v\u00fdpo\u010det p\u0159evodov\u00e9ho pom\u011bru je p\u0159\u00edmo\u010dar\u00fd a stoj\u00ed za to ho pochopit pr\u00e1v\u011b proto, \u017ee ur\u010duje ka\u017ed\u00e9 konstruk\u010dn\u00ed rozhodnut\u00ed v \u0159et\u011bzov\u00e9m pohonu:<\/p>\n

i = N2 \/ N1 = n1 \/ n2 = T2 \/ T1<\/p>\n
Kde: i = p\u0159evodov\u00fd pom\u011br | N1, N2 = po\u010det zub\u016f na hnac\u00edm a hnan\u00e9m ozuben\u00e9m kole | n1, n2 = ot\u00e1\u010dky h\u0159\u00eddele (ot.\/min) | T1, T2 = kroutic\u00ed momenty h\u0159\u00eddele (Nm)<\/div>\n<\/div>\n

Pokud m\u00e1 hnac\u00ed ozuben\u00e9 kolo 19 zub\u016f a hnan\u00e9 ozuben\u00e9 kolo 57 zub\u016f, p\u0159evodov\u00fd pom\u011br je 3:1. V\u00fdstupn\u00ed h\u0159\u00eddel se ot\u00e1\u010d\u00ed rychlost\u00ed jedn\u00e9 t\u0159etiny ot\u00e1\u010dek vstupn\u00edho h\u0159\u00eddele a v\u00fdstupn\u00ed to\u010div\u00fd moment (p\u0159ed ztr\u00e1tami p\u0159i p\u0159evodu) je trojn\u00e1sobkem vstupn\u00edho to\u010div\u00e9ho momentu. Tento vztah plat\u00ed p\u0159esn\u011b p\u0159i jak\u00e9mkoli zat\u00ed\u017een\u00ed a bez prokluzov\u00e1n\u00ed \u2013 co\u017e d\u011bl\u00e1 z \u0159et\u011bzu a ozuben\u00e9ho kola spr\u00e1vnou volbu pro jakoukoli aplikaci, kde je vy\u017eadov\u00e1n p\u0159esn\u00fd pom\u011br ot\u00e1\u010dek nebo synchronizace.<\/p>\n

\n\n\n\n\n\n\n\n\n
Typ pohonu<\/th>\nTypick\u00e1 \u00fa\u010dinnost<\/th>\nProkluzov\u00e1n\u00ed pod z\u00e1t\u011b\u017e\u00ed<\/th>\nNosnost r\u00e1z\u016f<\/th>\nFlexibilita vzd\u00e1lenosti od st\u0159edu<\/th>\nPo\u017eadovan\u00e9 maz\u00e1n\u00ed<\/th>\n<\/tr>\n<\/thead>\n
Pohon v\u00e1le\u010dkov\u00fdm \u0159et\u011bzem<\/td>\n97\u201398,5%<\/td>\nNula (pozitivn\u00ed zapojen\u00ed)<\/td>\nVynikaj\u00edc\u00ed<\/td>\nVysok\u00e1 \u2013 nastaviteln\u00e1<\/td>\nAno \u2013 z periodick\u00e9ho na nep\u0159etr\u017eit\u00fd<\/td>\n<\/tr>\n
Pohon kl\u00ednov\u00fdm \u0159emenem<\/td>\n93\u201396%<\/td>\n1\u20133% p\u0159i jmenovit\u00e9m zat\u00ed\u017een\u00ed<\/td>\nSt\u0159edn\u00ed (p\u00e1s absorbuje \u010d\u00e1st n\u00e1raz\u016f)<\/td>\nSt\u0159edn\u00ed \u2013 fixn\u00ed<\/td>\n\u017d\u00e1dn\u00fd<\/td>\n<\/tr>\n
Synchronn\u00ed \u0159emen<\/td>\n97\u201398%<\/td>\nNula (zubov\u00fd z\u00e1b\u011br)<\/td>\n\u0160patn\u00fd (\u0159emen m\u016f\u017ee p\u0159eskakovat nebo se zlomit)<\/td>\nN\u00edzk\u00e1 \u2013 pevn\u00e1<\/td>\n\u017d\u00e1dn\u00fd<\/td>\n<\/tr>\n
Pohon ozuben\u00fdm kolem<\/td>\n96\u201399%<\/td>\nNula<\/td>\nDobr\u00fd<\/td>\nVelmi n\u00edzk\u00e1 \u2013 pevn\u00e1 osov\u00e1 vzd\u00e1lenost<\/td>\nAno \u2013 nep\u0159etr\u017eit\u011b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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Jak \u0159et\u011bz zab\u00edr\u00e1 s ozuben\u00fdm kolem \u2013 detailn\u00ed popis mechaniky<\/h2>\n
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Proces z\u00e1b\u011bru nen\u00ed tak jednoduch\u00fd, jak se zd\u00e1. Jak se \u0159et\u011bz bl\u00ed\u017e\u00ed k ozuben\u00e9mu kolu, ka\u017ed\u00e1 vstupuj\u00edc\u00ed kladka neklou\u017eou hladce do paty zubu \u2013 doraz\u00ed pod \u00fahlem a pad\u00e1 do dosedac\u00ed k\u0159ivky s malou n\u00e1razovou rychlost\u00ed. Tento n\u00e1raz je to, co generuje charakteristick\u00fd hluk \u0159et\u011bzov\u00e9ho pohonu a je zodpov\u011bdn\u00e9 za \u010d\u00e1st \u00fanavov\u00e9ho zat\u00ed\u017een\u00ed kladky a zubu ozuben\u00e9ho kola.<\/p>\n

Tvar zubu dle ANSI B29.1 je navr\u017een tak, aby minimalizoval tento n\u00e1raz t\u00edm, \u017ee umo\u017e\u0148uje, aby se kladka nejprve dotkla \u010dela zubu m\u00edrn\u011b nad dosedac\u00ed k\u0159ivkou a pot\u00e9 se s rostouc\u00edm \u00fahlem ovinut\u00ed \u0159et\u011bzu skut\u00e1lela dol\u016f do ko\u0159ene zubu. Tato geometrie skut\u00e1len\u00ed do dosedac\u00ed plochy rozkl\u00e1d\u00e1 z\u00e1b\u011brov\u00e9 zat\u00ed\u017een\u00ed na prvn\u00edch 15\u201320 stup\u0148\u016f nato\u010den\u00ed \u0159et\u011bzov\u00e9ho kola, \u010d\u00edm\u017e se sni\u017euje maxim\u00e1ln\u00ed n\u00e1razov\u00e1 s\u00edla ve srovn\u00e1n\u00ed s \u0159et\u011bzem, kter\u00fd jednodu\u0161e pad\u00e1 p\u0159\u00edmo do ko\u0159ene zubu.<\/p>\n<\/div>\n<\/div>\n

Polygonov\u00fd efekt je nejd\u016fle\u017eit\u011bj\u0161\u00ed dynamickou charakteristikou, kterou kupuj\u00edc\u00ed a specifikato\u0159i neust\u00e1le myln\u011b ch\u00e1pou. Proto\u017ee je \u0159et\u011bz vyroben z pevn\u00fdch \u010dl\u00e1nk\u016f s diskr\u00e9tn\u00ed rozte\u010d\u00ed, pevn\u00e1 strana \u0159et\u011bzu se nepohybuje po p\u0159\u00edmce \u2013 pohybuje se v s\u00e9rii mal\u00fdch t\u011btiv, kdy\u017e se ka\u017ed\u00fd \u010dl\u00e1nek postupn\u011b dot\u00fdk\u00e1 \u0159et\u011bzov\u00e9ho kola. To vytv\u00e1\u0159\u00ed sinusovou zm\u011bnu rychlosti v hnan\u00e9m h\u0159\u00eddeli, i kdy\u017e se hnac\u00ed h\u0159\u00eddel ot\u00e1\u010d\u00ed dokonale konstantn\u00ed rychlost\u00ed. Amplituda t\u00e9to zm\u011bny rychlosti z\u00e1vis\u00ed na po\u010dtu zub\u016f \u0159et\u011bzov\u00e9ho kola:<\/p>\n

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Zuby ozuben\u00e9ho kola<\/th>\nMaxim\u00e1ln\u00ed variace rychlosti (%)<\/th>\nPraktick\u00fd efekt<\/th>\n<\/tr>\n<\/thead>\n
9 zub\u016f<\/td>\n\u00b16,11 TP3T<\/td>\nSly\u0161iteln\u00e9 chv\u011bn\u00ed, zna\u010dn\u00e9 vibrace v poh\u00e1n\u011bn\u00e9m stroji<\/td>\n<\/tr>\n
11 zub\u016f<\/td>\n\u00b14,1%<\/td>\nZnateln\u00e9 vibrace, zkr\u00e1cen\u00e1 \u017eivotnost lo\u017eiska na hnan\u00e9m h\u0159\u00eddeli<\/td>\n<\/tr>\n
17 zub\u016f<\/td>\n\u00b11,71 TP3T<\/td>\nMinim\u00e1ln\u00ed \u2014 ANSI doporu\u010den\u00e9 minimum pro bezprobl\u00e9mov\u00fd provoz<\/td>\n<\/tr>\n
21 zub\u016f<\/td>\n\u00b11,1%<\/td>\nEfektivn\u011b hladk\u00fd povrch pro v\u011bt\u0161inu pr\u016fmyslov\u00fdch aplikac\u00ed<\/td>\n<\/tr>\n
25 zub\u016f<\/td>\n\u00b10,79%<\/td>\nZanedbateln\u00e9 \u2013 vhodn\u00e9 pro p\u0159esn\u00e9 indexovac\u00ed a m\u011b\u0159ic\u00ed pohony<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
Realita efektivity, kter\u00e1 p\u0159ekvapuje v\u011bt\u0161inu in\u017een\u00fdr\u016f:<\/strong> \u0158et\u011bzov\u00e9 pohony jsou p\u0159i stejn\u00e9m zat\u00ed\u017een\u00ed energeticky \u00fa\u010dinn\u011bj\u0161\u00ed ne\u017e pohony kl\u00ednov\u00fdmi \u0159emeny. V\u00e1le\u010dkov\u00fd \u0159et\u011bz ANSI pracuj\u00edc\u00ed se spr\u00e1vn\u00fdm maz\u00e1n\u00edm dosahuje mechanick\u00e9 \u00fa\u010dinnosti 97\u201398,51 TP3T \u2013 co\u017e je trvale lep\u0161\u00ed ne\u017e \u00fa\u010dinnost 93\u2013961 TP3T, kter\u00e1 je typick\u00e1 pro kl\u00ednov\u00e9 \u0159emeny p\u0159i stejn\u00e9m v\u00fdkonu. Rozd\u00edl v \u00fa\u010dinnosti se p\u0159i vy\u0161\u0161\u00edm zat\u00ed\u017een\u00ed zv\u011bt\u0161uje: kl\u00ednov\u00fd \u0159emen pracuj\u00edc\u00ed p\u0159i jmenovit\u00e9m zat\u00ed\u017een\u00ed 801 TP3T ztr\u00e1c\u00ed p\u0159ibli\u017en\u011b 4\u201351 TP3T na ztr\u00e1ty v d\u016fsledku prokluzu a ohybu, zat\u00edmco spr\u00e1vn\u011b mazan\u00fd v\u00e1le\u010dkov\u00fd \u0159et\u011bz ztr\u00e1c\u00ed pouze 1,5\u201321 TP3T na t\u0159en\u00ed v lo\u017eisk\u00e1ch a v z\u00e1b\u011bru s v\u00e1le\u010dky. B\u011bhem roku nep\u0159etr\u017eit\u00e9ho dvousm\u011bnn\u00e9ho provozu se tento rozd\u00edl v \u00fa\u010dinnosti projev\u00ed v m\u011b\u0159iteln\u00e9m sn\u00ed\u017een\u00ed spot\u0159eby energie motoru \u2013 n\u011bkdy to sta\u010d\u00ed k tomu, aby se modernizace \u0159et\u011bzov\u00e9ho pohonu ospravedlnila pouze z hlediska n\u00e1klad\u016f na energii.<\/div>\n

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Mo\u017enosti konfigurace \u0159et\u011bzov\u00e9ho pohonu: Jednovl\u00e1knov\u00fd, v\u00edcevl\u00e1knov\u00fd a dvojit\u00fd rozte\u010d<\/h2>\n

Kdy\u017e jednovl\u00e1knov\u00fd hnac\u00ed \u0159et\u011bz dos\u00e1hne horn\u00ed hranice sv\u00e9ho publikovan\u00e9ho jmenovit\u00e9ho v\u00fdkonu pro danou rychlost, existuj\u00ed dv\u011b mo\u017enosti: zv\u011bt\u0161it rozte\u010d \u0159et\u011bzu (p\u0159echod na dal\u0161\u00ed v\u011bt\u0161\u00ed velikost ANSI) nebo p\u0159idat druh\u00fd pramen (duplexn\u00ed \u0159et\u011bz). Nejedn\u00e1 se o ekvivalentn\u00ed mo\u017enosti \u2013 maj\u00ed r\u016fzn\u00e9 \u00fa\u010dinky na hnac\u00ed syst\u00e9m.<\/p>\n

Zv\u00fd\u0161en\u00ed rozte\u010de zvy\u0161uje minim\u00e1ln\u00ed mezn\u00ed zat\u00ed\u017een\u00ed a \u00fanavovou odolnost \u0159et\u011bzu, ale tak\u00e9 zvy\u0161uje polygon\u00e1ln\u00ed efekt pro dan\u00fd po\u010det zub\u016f a vy\u017eaduje v\u00fdm\u011bnu \u0159et\u011bzov\u00fdch kol. P\u0159echod z \u0159et\u011bzu #60 na #80 u 19zub\u00e9ho hnac\u00edho kola zvy\u0161uje kol\u00eds\u00e1n\u00ed rychlosti z 1,741 TP3T na 1,741 TP3T (beze zm\u011bny, proto\u017ee to ovliv\u0148uje po\u010det zub\u016f, nikoli rozte\u010d) \u2013 \u0159et\u011bz s v\u011bt\u0161\u00ed rozte\u010d\u00ed v\u0161ak vy\u017eaduje v\u011bt\u0161\u00ed \u0159et\u011bzov\u00e1 kola pro udr\u017een\u00ed stejn\u00e9ho rychlostn\u00edho pom\u011bru, co\u017e zv\u011bt\u0161uje vn\u011bj\u0161\u00ed pr\u016fm\u011br hnac\u00edho syst\u00e9mu a m\u016f\u017ee zp\u016fsobit probl\u00e9my s v\u016fl\u00ed.<\/p>\n

P\u0159id\u00e1n\u00edm druh\u00e9ho \u0159et\u011bzov\u00e9ho kola (simplex na duplex) se zdvojn\u00e1sob\u00ed jmenovit\u00e9 pracovn\u00ed zat\u00ed\u017een\u00ed beze zm\u011bny rozte\u010de nebo vn\u011bj\u0161\u00edho pr\u016fm\u011bru ozuben\u00e9ho kola. Ozuben\u00e1 kola mus\u00ed b\u00fdt nahrazena duplexn\u00edmi verzemi (stejn\u00e1 rozte\u010dn\u00e1 kru\u017enice, dvojn\u00e1sobn\u00e1 \u0161\u00ed\u0159ka zub\u016f), ale st\u0159edy h\u0159\u00eddel\u00ed z\u016fst\u00e1vaj\u00ed stejn\u00e9 a instala\u010dn\u00ed rozsah se nem\u011bn\u00ed. U pohon\u016f, u kter\u00fdch nen\u00ed zv\u011bt\u0161en\u00ed pr\u016fm\u011bru ozuben\u00e9ho kola provediteln\u00e9 \u2013 omezeno geometri\u00ed r\u00e1mu nebo ochrann\u00fdmi v\u016flemi \u2013 je upgrade na duplex obvykle lep\u0161\u00ed volbou.<\/p>\n

Dvourozte\u010dn\u00fd \u0159et\u011bz<\/strong> je odli\u0161n\u00fd koncept od duplexn\u00edho \u0159et\u011bzu a \u010dasto se s n\u00edm zam\u011b\u0148uje. Dvourozte\u010dn\u00fd \u0159et\u011bz m\u00e1 stejn\u00fd pr\u016fm\u011br v\u00e1le\u010dk\u016f a vnit\u0159n\u00ed \u0161\u00ed\u0159ku \u010dl\u00e1nk\u016f jako jeho ekvivalentn\u00ed \u0159et\u011bz se standardn\u00ed rozte\u010d\u00ed \u2013 zdvojn\u00e1sobuje se rozte\u010d \u010dl\u00e1nk\u016f. ANSI #2060 (dvourozte\u010dn\u00fd ekvivalent #60) m\u00e1 rozte\u010d 38,10 mm m\u00edsto 19,05 mm, ale pou\u017e\u00edv\u00e1 stejnou kladku o pr\u016fm\u011bru 11,91 mm jako standardn\u00ed #60. Dvourozte\u010dn\u00fd \u0159et\u011bz se pou\u017e\u00edv\u00e1 v\u00fdhradn\u011b pro pomal\u00e9 pohony dopravn\u00edk\u016f \u2013 v\u00e1\u017e\u00ed m\u00e9n\u011b a stoj\u00ed m\u00e9n\u011b na metr ne\u017e standardn\u00ed \u0159et\u011bz pro stejn\u00fd pr\u016fm\u011br v\u00e1le\u010dk\u016f, ale nelze jej pou\u017e\u00edt p\u0159i rychlostech nad p\u0159ibli\u017en\u011b 100 metr\u016f za minutu bez nadm\u011brn\u00e9ho polygonov\u00e9ho efektu a hluku. Dvourozte\u010dn\u00fd \u0159et\u011bz u vysokorychlostn\u00edho pohonu p\u0159edstavuje probl\u00e9m s \u00fadr\u017ebou, nikoli \u00fasporu n\u00e1klad\u016f.<\/p>\n

\"animace<\/p>\n

Kde jsou syst\u00e9my ozuben\u00fdch kol a \u0159et\u011bz\u016f tou spr\u00e1vnou volbou<\/h2>\n

Zem\u011bd\u011blsk\u00e9 stroje.<\/strong> \u0158et\u011bzov\u00e9 pohony dominuj\u00ed ve skl\u00edzec\u00edch ml\u00e1ti\u010dk\u00e1ch, ml\u00e1ti\u010dk\u00e1ch na r\u00fd\u017ei a sec\u00edch stroj\u00edch z n\u011bkolika d\u016fvod\u016f: toleruj\u00ed r\u00e1zov\u00e9 zat\u00ed\u017een\u00ed z nerovnom\u011brn\u00e9ho pod\u00e1v\u00e1n\u00ed plodiny, udr\u017euj\u00ed p\u0159esn\u00e9 na\u010dasov\u00e1n\u00ed mezi syst\u00e9my podava\u010de, ml\u00e1cen\u00ed a separace a spolehliv\u011b funguj\u00ed v pra\u0161n\u00fdch, mokr\u00fdch a abrazivn\u00edch podm\u00ednk\u00e1ch, kter\u00e9 by rychle po\u0161kozovaly povrchy p\u00e1s\u016f. V\u00e1le\u010dkov\u00fd \u0159et\u011bz v rozte\u010d\u00edch ANSI a ISO<\/a> tvo\u0159\u00ed p\u00e1te\u0159 v\u011bt\u0161iny korejsk\u00fdch pohonn\u00fdch syst\u00e9m\u016f zem\u011bd\u011blsk\u00fdch stroj\u016f, od pod\u00e1vac\u00edch \u0159et\u011bz\u016f #40 a\u017e po pohony elev\u00e1tor\u016f s velkou rozte\u010d\u00ed #100.<\/p>\n

Pr\u016fmyslov\u00e9 dopravn\u00edky a manipulace s materi\u00e1lem.<\/strong> \u0158et\u011bzov\u00e9 pohony dopravn\u00edk\u016f mus\u00ed udr\u017eovat konstantn\u00ed rychlost \u0159et\u011bzu p\u0159i manipulaci s prom\u011bnn\u00fdm zat\u00ed\u017een\u00edm \u2013 co\u017e je po\u017eadavek, aby \u0159et\u011bz zvl\u00e1dal l\u00e9pe ne\u017e \u0159emen d\u00edky charakteristice nulov\u00e9ho prokluzu. \u0158et\u011bzy technick\u00e9 t\u0159\u00eddy v vle\u010dn\u00fdch dopravn\u00edc\u00edch, kore\u010dkov\u00fdch elev\u00e1torech a \u0161krab\u00e1kov\u00fdch dopravn\u00edc\u00edch nesou zat\u00ed\u017een\u00ed, kter\u00e1 by p\u0159ekro\u010dila jmenovitou nosnost standardn\u00edho v\u00e1le\u010dkov\u00e9ho \u0159et\u011bzu, a to s vyu\u017eit\u00edm \u00fa\u010delov\u011b navr\u017een\u00fdch pr\u016fm\u011br\u016f v\u00e1lc\u016f a tlou\u0161t\u011bk desek, kter\u00e9 poskytuj\u00ed bezpe\u010dnostn\u00ed faktor 5:1 p\u0159i jmenovit\u00e9m provozn\u00edm zat\u00ed\u017een\u00ed.<\/p>\n

Pohon motocykl\u016f a motorsport\u016f.<\/strong> Ten\/Ta\/To syst\u00e9m \u0159et\u011bz\u016f a \u0159et\u011bzov\u00fdch kol pro motocykly<\/strong> je jednou z aplikac\u00ed \u0159et\u011bzov\u00e9ho pohonu, kter\u00e1 je nejd\u016fle\u017eit\u011bj\u0161\u00ed z hlediska v\u00fdkonu a \u00fadr\u017eby. \u0158et\u011bz mus\u00ed p\u0159en\u00e1\u0161et maxim\u00e1ln\u00ed to\u010div\u00fd moment motoru p\u0159i dynamick\u00e9m zat\u00ed\u017een\u00ed zrychlen\u00edm, p\u0159i\u010dem\u017e mus\u00ed m\u00edt co nejmen\u0161\u00ed hmotnost a odol\u00e1vat zne\u010di\u0161t\u011bn\u00ed vozovky. Ozna\u010den\u00ed rozte\u010de 520, 530 a 630 ozna\u010duje v n\u00e1zvoslov\u00ed motocyklov\u00fdch \u0159et\u011bz\u016f vnit\u0159n\u00ed \u0161\u00ed\u0159ku \u2013 nikoli rozte\u010d (skute\u010dn\u00e1 rozte\u010d u v\u0161ech t\u0159\u00ed je 5\/8 palce, tj. 15,875 mm). Spr\u00e1vn\u00e1 interpretace t\u011bchto \u010d\u00edsel zabra\u0148uje nespr\u00e1vn\u00fdm objedn\u00e1vk\u00e1m n\u00e1hradn\u00edch d\u00edl\u016f.<\/p>\n

Automatizace a balic\u00ed linky.<\/strong> Servopoh\u00e1n\u011bn\u00e9 \u0159et\u011bzov\u00e9 indexovac\u00ed syst\u00e9my vy\u017eaduj\u00ed ozuben\u00e1 kola s minim\u00e1ln\u00edm po\u010dtem zub\u016f 21 nebo v\u00edce, aby se sn\u00ed\u017eilo zvln\u011bn\u00ed rychlosti zp\u016fsoben\u00e9 polygon\u00e1ln\u00edm efektem pod toleranc\u00ed zp\u011btn\u00e9 vazby servopohonu. Ozuben\u00e1 kola se standardn\u00edm a hotov\u00fdm otvorem<\/a> z hlin\u00edku nebo uhl\u00edkov\u00e9 oceli poskytuj\u00ed kombinaci n\u00edzk\u00e9 rota\u010dn\u00ed setrva\u010dnosti a rozm\u011brov\u00e9 p\u0159esnosti, kterou syst\u00e9my servopohon\u016f pot\u0159ebuj\u00ed.<\/p>\n

\"\"<\/p>\n

\u0158et\u011bzov\u00e9 a ozuben\u00e9 syst\u00e9my v zem\u011bd\u011blsk\u00fdch aplikac\u00edch \u2013 kde je sou\u010dasn\u011b vy\u017eadov\u00e1n pozitivn\u00ed z\u00e1b\u011br, tolerance n\u00e1raz\u016f a spolehliv\u00e9 \u010dasov\u00e1n\u00ed p\u0159i prom\u011bnn\u00e9m zat\u00ed\u017een\u00ed.<\/p>\n

<\/p>\n

V\u00fdb\u011br \u0159et\u011bzov\u00e9ho a ozuben\u00e9ho pohonu: \u010cty\u0159krokov\u00e1 metoda<\/h2>\n

Norma ANSI B29.1 poskytuje grafick\u00fd graf jmenovit\u00e9ho v\u00fdkonu, kter\u00fd mapuje jakoukoli kombinaci konstruk\u010dn\u00edho v\u00fdkonu a ot\u00e1\u010dek mal\u00e9ho \u0159et\u011bzov\u00e9ho kola na doporu\u010denou rozte\u010d \u0159et\u011bzu. Proces funguje n\u00e1sledovn\u011b:<\/p>\n

    \n
  1. Ur\u010dete konstruk\u010dn\u00ed v\u00fdkon.<\/strong> Za\u010dn\u011bte s v\u00fdkonem motoru uveden\u00fdm na \u0161t\u00edtku a vyn\u00e1sobte jej servisn\u00edm faktorem pro v\u00e1\u0161 typ zat\u00ed\u017een\u00ed: 1,0 pro rovnom\u011brn\u00e9 zat\u00ed\u017een\u00ed (kompresory, odst\u0159ediv\u00e1 \u010derpadla), 1,3 pro st\u0159edn\u00ed r\u00e1zy (dopravn\u00edky s nerovnom\u011brn\u00fdm pod\u00e1v\u00e1n\u00edm, m\u00edcha\u010dky) a 1,7 pro siln\u00e9 r\u00e1zy (lisy, kore\u010dkov\u00e9 elev\u00e1tory, drti\u010de hornin). Konstruk\u010dn\u00ed v\u00fdkon je v\u017edy vy\u0161\u0161\u00ed ne\u017e v\u00fdkon motoru uveden\u00fd na \u0161t\u00edtku \u2013 toto je z\u00e1m\u011brn\u00e9.<\/li>\n
  2. Vyberte rozte\u010d \u0159et\u011bzu z tabulky jmenovit\u00fdch hodnot.<\/strong> Pomoc\u00ed konstruk\u010dn\u00edho v\u00fdkonu a ot\u00e1\u010dek mal\u00e9ho \u0159et\u011bzov\u00e9ho kola (ot.\/min. rychlej\u0161\u00ed h\u0159\u00eddele) vyhledejte pr\u016fse\u010d\u00edk na grafu jmenovit\u00fdch v\u00fdkon\u016f ANSI. Oblast, do kter\u00e9 tento bod spad\u00e1, ozna\u010duje doporu\u010denou rozte\u010d \u0159et\u011bzu. Pokud se bod nach\u00e1z\u00ed v bl\u00edzkosti hranice mezi dv\u011bma z\u00f3nami rozte\u010de, zvolte rad\u011bji men\u0161\u00ed rozte\u010d s v\u00edce prameny ne\u017e v\u011bt\u0161\u00ed rozte\u010d s jedn\u00edm pramenem.<\/li>\n
  3. Vyberte po\u010det zub\u016f \u0159et\u011bzov\u00e9ho kola.<\/strong> Mal\u00e9 ozuben\u00e9 kolo by m\u011blo m\u00edt minim\u00e1ln\u011b 17 zub\u016f. Pom\u011br po\u010dtu zub\u016f ur\u010duje p\u0159evodov\u00fd pom\u011br. Pro nejplynulej\u0161\u00ed chod pou\u017eijte na jednom ozuben\u00e9m kole lich\u00fd po\u010det zub\u016f, aby se ka\u017ed\u00fd zub p\u0159i po sob\u011b jdouc\u00edch ot\u00e1\u010dk\u00e1ch dot\u00fdkal jin\u00e9ho v\u00e1le\u010dku, \u010d\u00edm\u017e se opot\u0159eben\u00ed rovnom\u011brn\u011bji rozlo\u017e\u00ed mezi zuby ozuben\u00e9ho kola.<\/li>\n
  4. Nastavte osovou vzd\u00e1lenost a d\u00e9lku \u0159et\u011bzu.<\/strong> Doporu\u010den\u00e1 rozte\u010d \u0159et\u011bzu je u v\u011bt\u0161iny standardn\u00edch pohon\u016f 30\u201350n\u00e1sobek rozte\u010de \u0159et\u011bzu, minim\u00e1ln\u011b v\u0161ak 1,5n\u00e1sobek pr\u016fm\u011bru rozte\u010de velk\u00e9ho \u0159et\u011bzov\u00e9ho kola. D\u00e9lka \u0159et\u011bzu v \u010dl\u00e1nc\u00edch se vypo\u010d\u00edt\u00e1 z rozte\u010de \u0159et\u011bzu, pr\u016fm\u011br\u016f rozte\u010de dvou \u0159et\u011bzov\u00fdch kol a rozte\u010de \u0159et\u011bzu. V\u00fdsledek by m\u011bl b\u00fdt zaokrouhlen na sud\u00fd po\u010det \u010dl\u00e1nk\u016f, aby se dos\u00e1hlo standardn\u00ed spojovac\u00edho \u010dl\u00e1nku \u2013 polovi\u010dn\u00ed \u010dl\u00e1nky (p\u0159esazen\u00e9 \u010dl\u00e1nky) jsou slab\u0161\u00ed ne\u017e pln\u00e9 \u010dl\u00e1nky a v aplikac\u00edch s vysok\u00fdm zat\u00ed\u017een\u00edm by se jim m\u011blo vyhnout.<\/li>\n<\/ol>\n
    Nej\u010dast\u011bj\u0161\u00ed chyba p\u0159i dimenzov\u00e1n\u00ed u nov\u00fdch konstrukc\u00ed pohon\u016f:<\/strong> Specifikace rozte\u010de \u0159et\u011bzu, kter\u00e1 p\u0159esn\u011b spl\u0148uje vypo\u010d\u00edtan\u00fd po\u017eadavek na konstruk\u010dn\u00ed v\u00fdkon. Jmenovit\u00e9 v\u00fdkony ANSI jsou publikov\u00e1ny pro \u0159et\u011bzy pracuj\u00edc\u00ed s periodick\u00fdm maz\u00e1n\u00edm a standardn\u00edmi provozn\u00edmi podm\u00ednkami. Jak\u00e1koli odchylka \u2013 vy\u0161\u0161\u00ed okoln\u00ed teplota, abrazivn\u00ed prost\u0159ed\u00ed, p\u0159eru\u0161ovan\u00e9 maz\u00e1n\u00ed \u2013 sni\u017euje efektivn\u00ed v\u00fdkonovou kapacitu. Bezpe\u010dnostn\u00ed rezerva 25% nad vypo\u010d\u00edtan\u00fdm konstruk\u010dn\u00edm v\u00fdkonem je minim\u00e1ln\u00ed prax\u00ed; 50% je vhodn\u00e1 pro prost\u0159ed\u00ed, kde nelze zaru\u010dit spolehlivost maz\u00e1n\u00ed.<\/div>\n

    <\/p>\n

    \u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n
    \nJak\u00e1 je maxim\u00e1ln\u00ed rychlost, kterou m\u016f\u017ee dos\u00e1hnout v\u00e1le\u010dkov\u00fd \u0159et\u011bzov\u00fd pohon?<\/summary>\n
    Horn\u00ed limit ot\u00e1\u010dek pro v\u00e1le\u010dkov\u00fd \u0159et\u011bz je ur\u010den rozte\u010d\u00ed \u0159et\u011bzu a po\u010dtem zub\u016f mal\u00e9ho \u0159et\u011bzov\u00e9ho kola. Obecn\u011b plat\u00ed, \u017ee \u0159et\u011bz ANSI #25 (rozte\u010d 6,35 mm) m\u016f\u017ee b\u011b\u017eet a\u017e 3 600 ot\/min na 25zub\u00e9m \u0159et\u011bzov\u00e9m kole za nep\u0159etr\u017eit\u00e9ho maz\u00e1n\u00ed v olejov\u00e9 l\u00e1zni \u2013 to odpov\u00edd\u00e1 rychlosti \u0159et\u011bzu p\u0159ibli\u017en\u011b 19 metr\u016f za sekundu. \u0158et\u011bzy s v\u011bt\u0161\u00ed rozte\u010d\u00ed maj\u00ed ni\u017e\u0161\u00ed limity ot\u00e1\u010dek. \u0158et\u011bz ANSI #80 (rozte\u010d 25,40 mm) dosahuje sv\u00e9ho praktick\u00e9ho horn\u00edho limitu p\u0159i p\u0159ibli\u017en\u011b 600\u2013800 ot\/min na 17zub\u00e9m \u0159et\u011bzov\u00e9m kole (p\u0159ibli\u017en\u011b 13 metr\u016f za sekundu). Za t\u011bmito limity se dominantn\u00edm mechanismem opot\u0159eben\u00ed st\u00e1v\u00e1 n\u00e1razov\u00e1 rychlost z\u00e1b\u011bru v\u00e1le\u010dk\u016f a \u017eivotnost \u0159et\u011bzu rapidn\u011b kles\u00e1 bez ohledu na kvalitu maz\u00e1n\u00ed.<\/div>\n<\/details>\n
    \nJak\u00fd by m\u011bl b\u00fdt prov\u011b\u0161en\u00ed \u0159et\u011bzu (trolejov\u00e9ho veden\u00ed) na v\u016fli horizont\u00e1ln\u00edho pohonu?<\/summary>\n
    Norma ANSI B29.1 doporu\u010duje pro standardn\u00ed horizont\u00e1ln\u00ed pohony prov\u011b\u0161en\u00ed na stran\u011b v\u016fle p\u0159ibli\u017en\u011b 2% horizont\u00e1ln\u00ed osov\u00e9 vzd\u00e1lenosti. Pro osovou vzd\u00e1lenost 500 mm je spr\u00e1vn\u00e9 prov\u011b\u0161en\u00ed asi 10 mm v polovin\u011b rozp\u011bt\u00ed na stran\u011b v\u016fle. P\u0159\u00edli\u0161 mal\u00e9 prov\u011b\u0161en\u00ed (p\u0159\u00edli\u0161 napnut\u00fd \u0159et\u011bz) zvy\u0161uje zat\u00ed\u017een\u00ed lo\u017eisek a urychluje opot\u0159eben\u00ed \u0159et\u011bzu a \u0159et\u011bzov\u00e9ho kola, n\u011bkdy v\u00edce ne\u017e opot\u0159ebovan\u00fd \u0159et\u011bz. P\u0159\u00edli\u0161 velk\u00e9 prov\u011b\u0161en\u00ed umo\u017e\u0148uje \u0159et\u011bzu kmitat p\u0159i cyklov\u00e1n\u00ed zat\u00ed\u017een\u00ed, co\u017e vytv\u00e1\u0159\u00ed p\u0159\u00ed\u010dn\u00e9 vibrace a m\u016f\u017ee zp\u016fsobit p\u0159eskakov\u00e1n\u00ed zub\u016f \u0159et\u011bzu na mal\u00e9m \u0159et\u011bzov\u00e9m kole. Doporu\u010den\u00ed prov\u011b\u0161en\u00ed se m\u011bn\u00ed u \u0161ikm\u00fdch pohon\u016f \u2013 u \u0161ikm\u00e9ho pohonu o \u00fahlu 45 stup\u0148\u016f se doporu\u010den\u00e9 prov\u011b\u0161en\u00ed sni\u017euje na p\u0159ibli\u017en\u011b 1% osov\u00e9 vzd\u00e1lenosti a u t\u00e9m\u011b\u0159 vertik\u00e1ln\u00edho pohonu je nutn\u00e9 pou\u017e\u00edt vod\u00edtko nebo nap\u00edna\u010d.<\/div>\n<\/details>\n
    \nM\u016f\u017ee \u0159et\u011bzov\u00fd pohon b\u011b\u017eet vp\u0159ed i vzad?<\/summary>\n
    Ano, s n\u011bkolika v\u00fdhradami. Standardn\u00ed v\u00e1le\u010dkov\u00fd \u0159et\u011bz zvl\u00e1d\u00e1 z konstruk\u010dn\u00edho hlediska dob\u0159e reverza\u010dn\u00ed zat\u00ed\u017een\u00ed \u2013 ob\u011b strany profilu zubu jsou navr\u017eeny tak, aby nesly zat\u00ed\u017een\u00ed. Probl\u00e9m s reverza\u010dn\u00edmi pohony je p\u0159echodov\u00fd moment, kdy se \u0159et\u011bz zm\u011bn\u00ed z napnut\u00e9ho stavu na jedn\u00e9 stran\u011b na napnut\u00fd stav na druh\u00e9. B\u011bhem tohoto p\u0159echodu se na d\u0159\u00edve uvoln\u011bn\u00e9 stran\u011b nahromad\u00ed prov\u011b\u0161en\u00ed a p\u0159i reverzaci pohonu se \u0159et\u011bz m\u016f\u017ee na okam\u017eik uvolnit natolik, \u017ee p\u0159ed op\u011btovn\u00fdm napnut\u00edm p\u0159esko\u010d\u00ed o jeden zub. Pro aplikace vy\u017eaduj\u00edc\u00ed \u010dast\u00e9 a rychl\u00e9 reverzace pou\u017eijte men\u0161\u00ed nastaven\u00ed prov\u011b\u0161en\u00ed, ne\u017e je standardn\u00ed doporu\u010den\u00ed 2%, a zva\u017ete pou\u017eit\u00ed nap\u00edna\u010de proti zp\u011btn\u00e9mu chodu na uvoln\u011bn\u00e9 stran\u011b, abyste zabr\u00e1nili uvoln\u011bn\u00ed \u0159et\u011bzu b\u011bhem zpomalov\u00e1n\u00ed. M\u00edrn\u00e9 zmen\u0161en\u00ed osov\u00e9 vzd\u00e1lenosti \u0159et\u011bzov\u00e9ho kola (na p\u0159ibli\u017en\u011b 25n\u00e1sobek rozte\u010de \u0159et\u011bzu m\u00edsto standardn\u00edch 40n\u00e1sobk\u016f) tak\u00e9 pom\u00e1h\u00e1 zmen\u0161en\u00edm d\u00e9lky rozp\u011bt\u00ed uvoln\u011bn\u00e9 strany.<\/div>\n<\/details>\n
    \nJak\u00fd typ maziva by se m\u011bl pou\u017e\u00edvat na pohon v\u00e1le\u010dkov\u00e9ho \u0159et\u011bzu?<\/summary>\n
    Norma ANSI B29.1 specifikuje \u010dty\u0159i kategorie maz\u00e1n\u00ed podle rychlosti a v\u00fdkonu \u0159et\u011bzu: Typ 1 (ru\u010dn\u00ed periodick\u00e9 nan\u00e1\u0161en\u00ed oleje na uvoln\u011bnou stranu), Typ 2 (kapkov\u00e1 maznice), Typ 3 (olejov\u00e1 l\u00e1ze\u0148 nebo odst\u0159ikovac\u00ed kotou\u010d) a Typ 4 (proud oleje nebo nucen\u00e1 cirkulace). Pro v\u011bt\u0161inu b\u011b\u017en\u00fdch pr\u016fmyslov\u00fdch pohon\u016f je vhodn\u00fd miner\u00e1ln\u00ed olej SAE 30\u201350. Viskozita by se m\u011bla zvy\u0161ovat se zat\u00ed\u017een\u00edm a sni\u017eovat s rychlost\u00ed \u2013 pomal\u00fd, siln\u011b zat\u00ed\u017een\u00fd pohon dopravn\u00edku pot\u0159ebuje visk\u00f3zn\u011bj\u0161\u00ed olej ne\u017e rychl\u00fd, lehce zat\u00ed\u017een\u00fd pohon balic\u00edho stroje. Pro v\u00e1le\u010dkov\u00e9 \u0159et\u011bzy je mazivo obecn\u011b nevhodn\u00e9 \u2013 nepronik\u00e1 do v\u016fle mezi \u010depem a pouzdrem kapil\u00e1rn\u00edm p\u016fsoben\u00edm a ma\u017ee pouze vn\u011bj\u0161\u00ed povrchy. Olej specifick\u00fd pro \u0159et\u011bzy, kter\u00fd m\u00e1 dostate\u010dn\u011b n\u00edzkou viskozitu, aby pronikl do rozhran\u00ed \u010depu a pouzdra kapil\u00e1rn\u00edm p\u016fsoben\u00edm, a z\u00e1rove\u0148 m\u00e1 dostate\u010dnou pevnost filmu, aby odolal odmr\u0161t\u011bn\u00ed p\u0159i vysok\u00e9 rychlosti, je technicky spr\u00e1vn\u00fdm mazivem pro v\u011bt\u0161inu aplikac\u00ed.<\/div>\n<\/details>\n
    \nJe \u0159et\u011bzov\u00fd pohon vhodn\u00fd pro prost\u0159ed\u00ed s vysok\u00fdmi teplotami?<\/summary>\n
    Standardn\u00ed v\u00e1le\u010dkov\u00fd \u0159et\u011bz z uhl\u00edkov\u00e9 oceli si udr\u017euje jmenovitou nosnost a\u017e do p\u0159ibli\u017en\u011b 200 \u00b0C, nad touto teplotou za\u010d\u00edn\u00e1 ocel m\u011bknout, co\u017e sni\u017euje tvrdost a odolnost proti \u00fanav\u011b. Limituj\u00edc\u00edm faktorem p\u0159i zv\u00fd\u0161en\u00fdch teplot\u00e1ch je rozklad maziva \u2013 standardn\u00ed maziva na b\u00e1zi miner\u00e1ln\u00edho oleje za\u010d\u00ednaj\u00ed karbonizovat nad 100\u2013120 \u00b0C a usazovat tvrd\u00fd lak v meze\u0159e mezi \u010depem a pouzdrem, kter\u00fd p\u016fsob\u00ed sp\u00ed\u0161e jako abrazivum ne\u017e jako mazivo. Pro pohony pracuj\u00edc\u00ed p\u0159i teplot\u00e1ch 120\u2013300 \u00b0C je vy\u017eadov\u00e1n vysokoteplotn\u00ed \u0159et\u011bzov\u00fd olej (obvykle na b\u00e1zi syntetick\u00e9ho polyalfaolefinu nebo perfluorovan\u00e9ho etheru). Nad 300 \u00b0C se pou\u017e\u00edv\u00e1 \u0159et\u011bz s tepeln\u011b zpracovan\u00fdm povrchem pro b\u011bh nasucho s MoS2 nebo grafitovou impregnac\u00ed \u2013 tyto \u0159et\u011bzy maj\u00ed podstatn\u011b ni\u017e\u0161\u00ed jmenovit\u00e9 nosnosti ne\u017e ekvivalentn\u00ed mazan\u00e9 \u0159et\u011bzy, co\u017e vy\u017eaduje v\u011bt\u0161\u00ed rozte\u010d nebo dal\u0161\u00ed prameny pro kompenzaci.<\/div>\n<\/details>\n
    \nJak po\u017eadovan\u00e1 osov\u00e1 vzd\u00e1lenost ovliv\u0148uje v\u00fdkon \u0159et\u011bzov\u00e9ho pohonu?<\/summary>\n
    Osov\u00e1 vzd\u00e1lenost ovliv\u0148uje sou\u010dasn\u011b t\u0159i v\u00fdkonnostn\u00ed parametry: \u00fahel op\u00e1s\u00e1n\u00ed \u0159et\u011bzu na mal\u00e9m \u0159et\u011bzov\u00e9m kole, d\u00e9lku rozp\u011bt\u00ed \u0159et\u011bzu (kter\u00e1 ur\u010duje prov\u011b\u0161en\u00ed na stran\u011b v\u016fle a vlastn\u00ed frekvenci) a po\u010det \u010dl\u00e1nk\u016f v kontaktu s ka\u017ed\u00fdm \u0159et\u011bzov\u00fdm kolem. Velmi kr\u00e1tk\u00e9 osov\u00e9 vzd\u00e1lenosti (pod 20n\u00e1sobek rozte\u010de \u0159et\u011bzu) sni\u017euj\u00ed \u00fahel op\u00e1s\u00e1n\u00ed na mal\u00e9m \u0159et\u011bzov\u00e9m kole pod 120 stup\u0148\u016f \u2013 ANSI B29.1 specifikuje 120 stup\u0148\u016f jako minimum pro plnou jmenovitou nosnost. Pod 120 stupni op\u00e1s\u00e1n\u00ed kles\u00e1 efektivn\u00ed po\u010det zub\u016f v z\u00e1b\u011bru na 2\u20133, \u010d\u00edm\u017e se zat\u00ed\u017een\u00ed \u0159et\u011bzu koncentruje na men\u0161\u00ed po\u010det zub\u016f a urychluje se opot\u0159eben\u00ed \u0159et\u011bzu i \u0159et\u011bzov\u00e9ho kola. Velmi dlouh\u00e9 osov\u00e9 vzd\u00e1lenosti (nad 80n\u00e1sobek rozte\u010de \u0159et\u011bzu) vytv\u00e1\u0159ej\u00ed dlouh\u00e9 voln\u00e9 rozp\u011bt\u00ed na stran\u011b v\u016fle, kter\u00e9 p\u0159i ur\u010dit\u00fdch rychlostech vyv\u00edjej\u00ed rezonan\u010dn\u00ed vibrace \u2013 vlastn\u00ed frekvence rozp\u011bt\u00ed \u0159et\u011bzu se m\u016f\u017ee shodovat s frekvenc\u00ed z\u00e1b\u011bru zub\u016f, co\u017e vytv\u00e1\u0159\u00ed stojat\u00e9 vlny, kter\u00e9 zp\u016fsobuj\u00ed \u00fanavov\u00e9 trhliny v \u010dl\u00e1nkov\u00fdch desk\u00e1ch.<\/div>\n<\/details>\n

    <\/p>\n

    \n

    Pot\u0159ebujete komponenty \u0159et\u011bzu a ozuben\u00e9ho kola pro v\u00e1\u0161 pohonn\u00fd syst\u00e9m?<\/h2>\n

    A\u0165 u\u017e dimenzujete nov\u00fd pohon od z\u00e1kladu, nebo vym\u011b\u0148ujete opot\u0159ebovan\u00e9 komponenty ve st\u00e1vaj\u00edc\u00edm syst\u00e9mu, ov\u011b\u0159en\u00ed \u0159ady \u0159et\u011bzu, geometrie zub\u016f ozuben\u00fdch kol a specifikace otvoru p\u0159ed objedn\u00e1n\u00edm zabra\u0148uje poruch\u00e1m, kter\u00e9 vznikaj\u00ed v d\u016fsledku rozm\u011brov\u011b bl\u00edzk\u00fdch, ale specifika\u010dn\u011b nespr\u00e1vn\u00fdch d\u00edl\u016f.<\/p>\n

    Prohl\u00e9dn\u011bte si n\u00e1\u0161 katalog ozuben\u00fdch kol<\/a>
    \n    Kontaktujte na\u0161e in\u017een\u00fdry<\/a><\/div>\n<\/div>\n<\/div>\n

    St\u0159iha\u010d: Cxm<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

    Co je to syst\u00e9m \u0159et\u011bzu a ozuben\u00e9ho kola a jak funguje? Pohon \u0159et\u011bzem a ozuben\u00fdm kolem p\u0159en\u00e1\u0161\u00ed v\u00fdkon s vy\u0161\u0161\u00ed \u00fa\u010dinnost\u00ed a v\u011bt\u0161\u00ed toleranc\u00ed v\u016f\u010di n\u00e1raz\u016fm ne\u017e v\u011bt\u0161ina alternativ \u2013 ale pouze tehdy, kdy\u017e je syst\u00e9m spr\u00e1vn\u011b dimenzov\u00e1n. V\u011bt\u0161ina poruch pohonu nepoch\u00e1z\u00ed z nekvalitn\u00edch komponent\u016f, ale z nesouladu mezi po\u017eadavky na pohon a [\u2026]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[6634],"tags":[72,78,58],"class_list":["post-3361","post","type-post","status-publish","format-standard","hentry","category-chain-sprocket","tag-chain","tag-chain-sprocket","tag-sprocket"],"_links":{"self":[{"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/posts\/3361","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/comments?post=3361"}],"version-history":[{"count":2,"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/posts\/3361\/revisions"}],"predecessor-version":[{"id":3363,"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/posts\/3361\/revisions\/3363"}],"wp:attachment":[{"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/media?parent=3361"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/categories?post=3361"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/tags?post=3361"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}