{"id":1820,"date":"2026-04-08T06:19:26","date_gmt":"2026-04-08T06:19:26","guid":{"rendered":"https:\/\/wormwheelgear.top\/?p=1820"},"modified":"2026-04-08T06:23:57","modified_gmt":"2026-04-08T06:23:57","slug":"how-to-calculate-worm-gear-ratio-complete-engineering-guide-with-worked-examples","status":"publish","type":"post","link":"https:\/\/wormwheelgear.top\/cs\/how-to-calculate-worm-gear-ratio-complete-engineering-guide-with-worked-examples\/","title":{"rendered":"Jak vypo\u010d\u00edtat p\u0159evodov\u00fd pom\u011br \u0161nekov\u00e9ho p\u0159evodu \u2013 kompletn\u00ed technick\u00fd pr\u016fvodce s praktick\u00fdmi p\u0159\u00edklady"},"content":{"rendered":"

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Jak vypo\u010d\u00edtat p\u0159evodov\u00fd pom\u011br \u0161nekov\u00e9ho p\u0159evodu \u2013 Technick\u00fd pr\u016fvodce s praktick\u00fdmi p\u0159\u00edklady<\/h1>\n

\u0160patn\u00fd p\u0159evodov\u00fd pom\u011br ve specifikaci \u0161nekov\u00e9ho p\u0159evodu znamen\u00e1 v\u011bt\u0161\u00ed ztr\u00e1tu pen\u011bz ne\u017e samotn\u00e1 soukol\u00ed \u2013 \u0161patn\u00e9 v\u00fdstupn\u00ed ot\u00e1\u010dky znamenaj\u00ed \u0161patn\u00fd v\u00fdb\u011br motoru, \u0161patn\u00fd to\u010div\u00fd moment znamen\u00e1 poddimenzovan\u00e9 komponenty a \u0161patn\u00fd p\u0159edpoklad samosvornosti znamen\u00e1 nutnost dodate\u010dn\u00e9 mont\u00e1\u017ee brzdy. Tato p\u0159\u00edru\u010dka v\u00e1s provede v\u0161emi pot\u0159ebn\u00fdmi v\u00fdpo\u010dty a v ka\u017ed\u00e9m p\u0159\u00edkladu uvede re\u00e1ln\u00e1 \u010d\u00edsla.<\/p>\n

Z\u00edskejte podporu pro v\u00fdpo\u010det pom\u011br\u016f<\/a><\/p>\n<\/div>\n<\/div>\n

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Pro\u010d je chyba ve v\u00fdpo\u010dtu p\u0159evodov\u00e9ho pom\u011bru dra\u017e\u0161\u00ed ne\u017e samotn\u00e9 ozuben\u00e9 kolo<\/h2>\n

Konstrukt\u00e9r, kter\u00fd specifikuje \u0161nekov\u00fd p\u0159evod pro sol\u00e1rn\u00ed sledova\u010d, nastav\u00ed c\u00edlov\u00e9 v\u00fdstupn\u00ed ot\u00e1\u010dky na 0,25 ot.\/min z motoru s 1450 ot.\/min \u2013 co\u017e vy\u017eaduje celkov\u00fd p\u0159evodov\u00fd pom\u011br 5800:1. Vypo\u010d\u00edt\u00e1 p\u0159evodov\u00fd pom\u011br \u0161nekov\u00e9ho p\u0159evodu jako 58:1 z chybn\u00e9ho ode\u010dtu po\u010dtu zub\u016f (58 zub\u016f na kole, ale 2chod\u00fd \u0161nek \u2013 skute\u010dn\u00fd pom\u011br 29:1). Motor b\u011b\u017e\u00ed, sledova\u010d se pohybuje a skute\u010dn\u00e9 v\u00fdstupn\u00ed ot\u00e1\u010dky jsou 0,5 ot.\/min m\u00edsto 0,25 ot.\/min. Sledova\u010d p\u0159ekro\u010d\u00ed c\u00edlov\u00fd \u00fahel a \u0159\u00eddic\u00ed syst\u00e9m se nech\u00e1v\u00e1 nastavit. Ozuben\u00e1 kola jsou ji\u017e nainstalov\u00e1na na 200 jednotk\u00e1ch sledova\u010de, ne\u017e je chyba identifikov\u00e1na.<\/p>\n

N\u00e1klady na v\u00fdm\u011bnu ozuben\u00e9ho soukol\u00ed jsou zna\u010dn\u00e9. N\u00e1klady na zpo\u017ed\u011bn\u00ed projektu jsou vy\u0161\u0161\u00ed. Hlavn\u00ed p\u0159\u00ed\u010dinou v\u0161ak byla jedin\u00e1 v\u00fdpo\u010detn\u00ed chyba, jej\u00ed\u017e proveden\u00ed trvalo m\u00e9n\u011b ne\u017e minutu: z\u00e1m\u011bna po\u010dtu zub\u016f s p\u0159evodov\u00fdm pom\u011brem ignorov\u00e1n\u00edm po\u010dtu za\u010d\u00e1tk\u016f \u0161neku. Tato p\u0159\u00edru\u010dka t\u00e9to chyb\u011b p\u0159edch\u00e1z\u00ed t\u00edm, \u017ee v\u00fdpo\u010det kompletn\u011b vysv\u011btluje \u2013 v\u010detn\u011b b\u011b\u017en\u00e9 pasti po\u010d\u00edt\u00e1n\u00ed ot\u00e1\u010dek z\u00e1vitu \u0161neku m\u00edsto za\u010d\u00e1tk\u016f \u0161neku.<\/p>\n

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\"Mosazn\u00fd<\/div>\n

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Z\u00e1kladn\u00ed vzorec \u2013 a jedna chyba, kter\u00e1 zp\u016fsobuje v\u011bt\u0161inu chyb<\/h2>\n
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Vzorec pro p\u0159evodov\u00fd pom\u011br \u0161nekov\u00e9ho p\u0159evodu<\/p>\n

i = z2 \u00f7 z1<\/p>\n

Kde:<\/strong><\/p>\n

\u25a0 i = p\u0159evodov\u00fd pom\u011br (v\u00fdstupn\u00ed ot\u00e1\u010dky na jednu vstupn\u00ed ot\u00e1\u010dku: i = vstupn\u00ed ot\u00e1\u010dky \u00f7 v\u00fdstupn\u00ed ot\u00e1\u010dky)<\/p>\n

\u25a0 z2 = po\u010det zub\u016f na \u0161nekov\u00e9m kole<\/p>\n

\u25a0 z1 = po\u010det za\u010d\u00edn\u00e1<\/strong> na h\u0159\u00eddeli \u0161neku \u2013 NE po\u010det z\u00e1vit\u016f nebo pr\u016fchod\u016f z\u00e1vitu viditeln\u00fdch na h\u0159\u00eddeli \u0161neku<\/p>\n<\/div>\n

Nej\u010dast\u011bj\u0161\u00ed chybou ve v\u00fdpo\u010dtu je pou\u017eit\u00ed po\u010dtu ot\u00e1\u010dek \u0161neku nebo viditeln\u00e9ho po\u010dtu z\u00e1vit\u016f m\u00edsto po\u010dtu z\u00e1vit\u016f. Jednochod\u00fd \u0161nek se 40 z\u00e1vity omotan\u00fdmi kolem h\u0159\u00eddele m\u00e1 st\u00e1le z1 = 1. Dvouchod\u00fd \u0161nek s 20 z\u00e1vity na z\u00e1vit m\u00e1 st\u00e1le z1 = 2. Po\u010det z\u00e1vit\u016f \u0161neku je funkc\u00ed d\u00e9lky \u0161neku a \u00fahlu stoup\u00e1n\u00ed \u2013 nem\u00e1 nic spole\u010dn\u00e9ho s po\u010dtem z\u00e1vit\u016f, kter\u00fd ur\u010duje p\u0159evodov\u00fd pom\u011br.<\/p>\n

Jak zjistit po\u010det z\u00e1b\u011bh\u016f na existuj\u00edc\u00ed h\u0159\u00eddeli \u0161neku: pod\u00edvejte se na \u010deln\u00ed plochu \u0161neku. Spo\u010d\u00edtejte po\u010det viditeln\u00fdch po\u010d\u00e1te\u010dn\u00edch bod\u016f z\u00e1vitu na \u010deln\u00ed plo\u0161e \u2013 ka\u017ed\u00fd bod, kde z\u00e1vit za\u010d\u00edn\u00e1, p\u0159edstavuje jeden z\u00e1b\u011bh. Jeden po\u010d\u00e1te\u010dn\u00ed bod = jednoduch\u00fd z\u00e1b\u011bh. Dva po\u010d\u00e1te\u010dn\u00ed body, vzd\u00e1len\u00e9 od sebe o 180 stup\u0148\u016f = dvouz\u00e1b\u011bh. T\u0159i po\u010d\u00e1te\u010dn\u00ed body, vzd\u00e1len\u00e9 od sebe o 120 stup\u0148\u016f = t\u0159i z\u00e1b\u011bhy. Toto je jedin\u00fd spolehliv\u00fd zp\u016fsob, jak ur\u010dit po\u010det z\u00e1b\u011bh\u016f z fyzick\u00e9ho d\u00edlu, pokud nen\u00ed k dispozici v\u00fdkres nebo \u010d\u00edslo d\u00edlu.<\/p>\n

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\u0158e\u0161en\u00fd p\u0159\u00edklad 1 \u2014 Jednoduch\u00fd pom\u011br ze zn\u00e1m\u00fdch slo\u017eek<\/h2>\n
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Vzhledem k:<\/p>\n

\u25b7 Po\u010det zub\u016f \u0161nekov\u00e9ho kola: z2 = 40<\/p>\n

\u25b7 Po\u010det za\u010d\u00e1tk\u016f \u0161neku: z1 = 1 (\u0161nek s jedn\u00edm za\u010d\u00e1tkem z\u00e1vitu \u2013 jeden bod za\u010d\u00e1tku z\u00e1vitu na \u010deln\u00ed plo\u0161e)<\/p>\n

V\u00fdpo\u010det:<\/p>\n

i = z2 \u00f7 z1 = 40 \u00f7 1 = 40:1<\/strong><\/p>\n

Ov\u011b\u0159en\u00ed:<\/p>\n

Ot\u00e1\u010dky motoru 1450 ot\/min \u2192 v\u00fdstupn\u00ed ot\u00e1\u010dky = 1450 \u00f7 40 = 36,25 ot.\/min<\/strong><\/p>\n

Jin\u00fdmi slovy: \u0161nek vykon\u00e1 40 pln\u00fdch ot\u00e1\u010dek p\u0159i ka\u017ed\u00e9 ot\u00e1\u010dce kola. P\u0159i ot\u00e1\u010dk\u00e1ch motoru 1450 ot.\/min se kolo oto\u010d\u00ed jednou za 1,655 sekundy.<\/p>\n<\/div>\n

P\u0159\u00edklad 2 \u2013 V\u00fdpo\u010det cel\u00e9ho pohonu v\u010detn\u011b to\u010div\u00e9ho momentu a \u00fa\u010dinnosti<\/h2>\n
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Pou\u017eit\u00ed: Azimut\u00e1ln\u00ed pohon sol\u00e1rn\u00edho sledova\u010de<\/p>\n

Vzhledem k:<\/strong> Motor = 90 W, 1400 ot.\/min; po\u017eadovan\u00e9 v\u00fdstupn\u00ed ot\u00e1\u010dky = 18 ot.\/min; odhadovan\u00e1 \u00fa\u010dinnost \u0161nekov\u00e9ho pohonu p\u0159i tomto pom\u011bru = 0,78<\/p>\n

Krok 1 \u2013 Po\u017eadovan\u00fd pom\u011br:<\/p>\n

i = vstupn\u00ed ot\u00e1\u010dky \u00f7 v\u00fdstupn\u00ed ot\u00e1\u010dky = 1400 \u00f7 18 = 77.8:1<\/strong><\/p>\n

Zaokrouhlete na nejbli\u017e\u0161\u00ed praktick\u00fd po\u010det zub\u016f: z2 = 78 zub\u016f, z1 = 1 start \u2192 skute\u010dn\u00fd p\u0159evodov\u00fd pom\u011br = 78:1 \u2192 v\u00fdstupn\u00ed ot\u00e1\u010dky = 1400 \u00f7 78 = 17,95 ot.\/min<\/strong> (p\u0159ijateln\u00fd)<\/p>\n

Krok 2 \u2013 V\u00fdpo\u010det v\u00fdstupn\u00edho to\u010div\u00e9ho momentu:<\/p>\n

Vstupn\u00ed moment motoru = (V\u00fdkon motoru \u00d7 60) \u00f7 (2\u03c0 \u00d7 ot\u00e1\u010dky motoru) = (90 \u00d7 60) \u00f7 (2\u03c0 \u00d7 1400) = 0,614 Nm<\/strong><\/p>\n

V\u00fdstupn\u00ed to\u010div\u00fd moment = to\u010div\u00fd moment motoru \u00d7 p\u0159evodov\u00fd pom\u011br \u00d7 \u00fa\u010dinnost = 0,614 \u00d7 78 \u00d7 0,78 = 37,3 Nm<\/strong><\/p>\n

Krok 3 \u2013 Ov\u011b\u0159en\u00ed dimenzov\u00e1n\u00ed motoru:<\/p>\n

Po\u017eadovan\u00fd v\u00fdstupn\u00ed to\u010div\u00fd moment z anal\u00fdzy zat\u00ed\u017een\u00ed v\u011btrem: 35 Nm<\/p>\n

Vypo\u010d\u00edtan\u00fd v\u00fdstupn\u00ed to\u010div\u00fd moment: 37,3 Nm<\/p>\n

Mar\u017ee = (37,3 \u2013 35) \u00f7 35 = 6.6% \u2014 margin\u00e1ln\u00ed.<\/strong> Zva\u017ete motor o v\u00fdkonu 120 W nebo ov\u011b\u0159te v\u00fdpo\u010det zat\u00ed\u017een\u00ed v\u011btrem. Pro venkovn\u00ed pohony sledovac\u00edch za\u0159\u00edzen\u00ed se doporu\u010duje technick\u00e1 rezerva alespo\u0148 25% nad maxim\u00e1ln\u00edm to\u010div\u00fdm momentem v\u011btru, aby se zohlednily poryvy v\u011btru a zv\u00fd\u0161en\u00ed viskozity maziva p\u0159i studen\u00e9m startu.<\/p>\n<\/div>\n

P\u0159\u00edklad 3 \u2013 Zp\u011btn\u00fd postup od c\u00edlov\u00e9ho pom\u011bru k v\u00fdb\u011bru po\u010dtu zub\u016f<\/h2>\n
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Pou\u017eit\u00ed: CNC oto\u010dn\u00fd st\u016fl pro 4. osu<\/p>\n

Vzhledem k:<\/strong> Po\u017eadovan\u00fd p\u0159evodov\u00fd pom\u011br = p\u0159esn\u011b 36:1 (vhodn\u00e9 pro indexov\u00e1n\u00ed o 360\u00b0 v kroc\u00edch po 10\u00b0 \u2013 jedna ot\u00e1\u010dka motoru = v\u00fdstup 0,1\u00b0); nutn\u00e9 samosvorn\u00e9 ovl\u00e1d\u00e1n\u00ed<\/p>\n

Krok 1 \u2013 Ur\u010den\u00ed po\u010dtu start\u016f:<\/p>\n

Vy\u017eaduje se samosvor \u2192 pou\u017eijte z1 = 1 (jednochod\u00fd \u0161nek \u2013 nejmen\u0161\u00ed \u00fahel stoup\u00e1n\u00ed pro maxim\u00e1ln\u00ed spolehlivost samosvoru)<\/p>\n

Pro z1 = 1: z2 = i \u00d7 z1 = 36 \u00d7 1 = 36 zub\u016f na kole<\/strong><\/p>\n

Krok 2 \u2013 Kontrola pod\u0159ez\u00e1n\u00ed (minim\u00e1ln\u00ed po\u010det zub\u016f):<\/p>\n

U \u0161nekov\u00e9ho kola je minim\u00e1ln\u00ed praktick\u00fd po\u010det zub\u016f, aby se zabr\u00e1nilo siln\u00e9mu pod\u0159ez\u00e1n\u00ed, p\u0159ibli\u017en\u011b 17\u201320 zub\u016f. 36 zub\u016f je v\u00fdrazn\u011b nad touto hranic\u00ed \u2013 s pod\u0159ez\u00e1n\u00edm se nejedn\u00e1.<\/p>\n

Krok 3 \u2013 Alternativa: mohl by fungovat i dvouchod\u00fd \u010derv?<\/p>\n

Pro z1 = 2: z2 = 36 \u00d7 2 = 72 zub\u016f \u2192 kolo se fyzicky zv\u011bt\u0161\u00ed (v\u00edce materi\u00e1lu, vy\u0161\u0161\u00ed n\u00e1klady, pot\u0159eba v\u011bt\u0161\u00edho pouzdra)<\/p>\n

Tak\u00e9: 2chod\u00fd \u0161nek m\u00e1 p\u0159ibli\u017en\u011b 2\u00d7 v\u011bt\u0161\u00ed \u00fahel stoup\u00e1n\u00ed \u2192 nemus\u00ed se spolehliv\u011b samosvorit za v\u0161ech mazac\u00edch podm\u00ednek<\/p>\n

Z\u00e1v\u011br: z1 = 1, z2 = 36 je spr\u00e1vn\u00e1 specifikace.<\/strong> Je kompaktn\u00ed, spolehliv\u011b se samosvorn\u00fd a poskytuje p\u0159esn\u00fd po\u017eadovan\u00fd pom\u011br 36:1.<\/p>\n<\/div>\n

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\"konstrukce<\/div>\n

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Jak p\u0159evodov\u00fd pom\u011br ovliv\u0148uje \u00fa\u010dinnost \u2013 \u010d\u00edsla, kter\u00e1 pot\u0159ebujete pro dimenzov\u00e1n\u00ed motoru<\/h2>\n

\u00da\u010dinnost \u0161nekov\u00e9ho p\u0159evodu kles\u00e1 s rostouc\u00edm reduk\u010dn\u00edm pom\u011brem. To je geometrick\u00fd d\u016fsledek: vy\u0161\u0161\u00ed p\u0159evodov\u00fd pom\u011br vy\u017eaduje men\u0161\u00ed \u00fahel p\u0159edstihu a men\u0161\u00ed \u00fahel p\u0159edstihu sm\u011bruje v\u00edce kontaktn\u00ed s\u00edly do t\u0159en\u00ed sp\u00ed\u0161e ne\u017e do u\u017eite\u010dn\u00e9ho v\u00fdstupn\u00edho momentu. Tento vztah je spojit\u00fd a p\u0159edv\u00eddateln\u00fd \u2013 znalost p\u0159evodov\u00e9ho pom\u011bru umo\u017e\u0148uje odhadnout \u00fa\u010dinnost v u\u017eite\u010dn\u00e9m rozsahu pro \u00fa\u010dely dimenzov\u00e1n\u00ed motoru.<\/p>\n

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P\u0159evodov\u00fd pom\u011br (jednochod\u00fd \u0161nek)<\/th>\nTypick\u00fd \u00fahel stoup\u00e1n\u00ed<\/th>\nP\u0159ibli\u017en\u00e1 \u00fa\u010dinnost (maz\u00e1n\u00ed olejem, bronzov\u00e9 kolo)<\/th>\nSamosvorn\u00e9?<\/th>\n<\/tr>\n<\/thead>\n
5:1<\/td>\n~11\u00b0<\/td>\n88 \u2013 93%<\/td>\nNe \u2013 \u00fahel stoup\u00e1n\u00ed je v\u011bt\u0161\u00ed ne\u017e \u00fahel t\u0159en\u00ed<\/td>\n<\/tr>\n
10:1<\/td>\n~5,5\u00b0<\/td>\n82 \u2013 89%<\/td>\nMezn\u00ed \u2013 ov\u011b\u0159te p\u0159i provozn\u00ed teplot\u011b<\/td>\n<\/tr>\n
20:1<\/td>\n~3,0\u00b0<\/td>\n76 \u2013 84%<\/td>\nAno \u2013 spolehliv\u00e9 s maz\u00e1n\u00edm miner\u00e1ln\u00edm olejem<\/td>\n<\/tr>\n
30:1<\/td>\n~2,0\u00b0<\/td>\n72 \u2013 81%<\/td>\nAno \u2013 spolehliv\u00e9<\/td>\n<\/tr>\n
50:1<\/td>\n~1,2\u00b0<\/td>\n66 \u2013 76%<\/td>\nAno \u2013 spolehliv\u00e9<\/td>\n<\/tr>\n
80:1<\/td>\n~0,8\u00b0<\/td>\n60 \u2013 72%<\/td>\nAno \u2013 siln\u00e9 samosvorn\u00e9<\/td>\n<\/tr>\n
100:1<\/td>\n~0,6\u00b0<\/td>\n55 \u2013 68%<\/td>\nAno \u2013 velmi siln\u00fd, ale \u00fa\u010dinnost je n\u00edzk\u00e1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
Pravidlo pro dimenzov\u00e1n\u00ed motoru:<\/strong> Pro pom\u011bry nad 20:1 pou\u017eijte \u03b7 = 0,75 jako konzervativn\u00ed odhad dimenzov\u00e1n\u00ed motoru, pokud nejsou k dispozici specifick\u00e9 \u00fadaje o \u00fa\u010dinnosti. To d\u00e1v\u00e1 T_motor = T_v\u00fdstup \u00f7 (i \u00d7 0,75). Pokud motor vybran\u00fd s t\u00edmto odhadem b\u011b\u017e\u00ed s jmenovit\u00fdm zat\u00ed\u017een\u00edm men\u0161\u00edm ne\u017e 60% v provozu, je m\u011bni\u010d p\u0159edimenzov\u00e1n \u2013 ale syst\u00e9m bude fungovat. Pou\u017eit\u00ed \u03b7 = 1,0 (ignorov\u00e1n\u00ed \u00fa\u010dinnosti) p\u0159i dimenzov\u00e1n\u00ed motoru je chyba, kter\u00e1 zp\u016fsobuje p\u0159eh\u0159\u00e1t\u00ed a vypnut\u00ed motoru v provozu.<\/div>\n

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V\u00edcestartov\u00e9 \u010dervy \u2013 kdy pou\u017e\u00edt dva nebo t\u0159i starty<\/h2>\n

V\u00edcechod\u00fd \u0161nek zv\u011bt\u0161uje \u00fahel stoup\u00e1n\u00ed p\u0159i stejn\u00e9m pom\u011bru, \u010d\u00edm\u017e se zlep\u0161uje \u00fa\u010dinnost za cenu sn\u00ed\u017een\u00e9ho (nebo eliminovan\u00e9ho) samosvoru. Rozhodnut\u00ed mezi jednochod\u00fdm a v\u00edcechod\u00fdm p\u0159evodem je prim\u00e1rn\u011b d\u00e1no t\u00edm, zda je samosvor vy\u017eadov\u00e1n a jak\u00e1 \u00fa\u010dinnost je p\u0159ijateln\u00e1.<\/p>\n

\n\n\n\n\n\n\n\n
C\u00edlov\u00fd pom\u011br<\/th>\nPou\u017eit\u00ed z1 = 1 (jednor\u00e1zov\u00fd start)<\/th>\nPou\u017eit\u00ed z1 = 2 (dvouchodov\u00fd)<\/th>\nKdy d\u00e1t p\u0159ednost dvoustartov\u00e9mu<\/th>\n<\/tr>\n<\/thead>\n
20:1<\/td>\nz2 = 20, \u00fahel stoup\u00e1n\u00ed ~3\u00b0, ~78% \u03b7<\/td>\nz2 = 40, \u00fahel stoup\u00e1n\u00ed ~6\u00b0, ~86% \u03b7<\/td>\nPokud nen\u00ed vy\u017eadov\u00e1no samosvorn\u00e9 uchycen\u00ed a je d\u016fle\u017eit\u00e1 \u00fa\u010dinnost; je kompatibiln\u00ed s v\u011bt\u0161\u00edm pr\u016fm\u011brem kol<\/td>\n<\/tr>\n
10:1<\/td>\nz2 = 10, \u00fahel stoup\u00e1n\u00ed ~5,5\u00b0, ~84% \u03b7<\/td>\nz2 = 20, \u00fahel stoup\u00e1n\u00ed ~11\u00b0, ~91% \u03b7<\/td>\nKdy\u017e samosvornost rozhodn\u011b nen\u00ed nutn\u00e1; kdy\u017e je ztr\u00e1ta \u00fa\u010dinnosti p\u0159i pom\u011bru 10:1 pro jeden start nep\u0159ijateln\u00e1<\/td>\n<\/tr>\n
5:1<\/td>\nz2 = 5, \u00fahel stoup\u00e1n\u00ed ~11\u00b0, ~90% \u03b7<\/td>\nz2 = 10, \u00fahel stoup\u00e1n\u00ed ~22\u00b0, ~94% \u03b7<\/td>\nPom\u011br 5:1 je u \u0161nekov\u00fdch pohon\u016f neobvykl\u00fd \u2013 pokud je akceptovateln\u00fd rovnob\u011b\u017en\u00fd h\u0159\u00eddel, zva\u017ete \u0161ikm\u00e9 ozuben\u00e9 kolo<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

<\/p>\n

V\u00fdrobn\u00ed kapacita<\/h2>\n\n\n\n\n
\"d\u00edlna<\/td>\n\"d\u00edlna<\/td>\n<\/tr>\n
\"d\u00edlna<\/td>\n\"d\u00edlna<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/p>\n

V\u00fdpo\u010det, zda se v\u00e1\u0161 pom\u011br samoreguluje \u2013 kritick\u00e1 kontrola<\/h2>\n

Samosvornost nen\u00ed zaru\u010dena pro v\u0161echny p\u0159evodov\u00e9 pom\u011bry \u2013 je nutn\u00e9 ji ov\u011b\u0159it s ohledem na \u00fahel t\u0159en\u00ed konkr\u00e9tn\u00ed kombinace materi\u00e1lu a maziva. Kontrola je jednoduch\u00e1:<\/p>\n

\n

Postup kontroly samosvornosti<\/p>\n

Krok 1:<\/strong> Ur\u010dete \u00fahel stoup\u00e1n\u00ed \u03bb = arctan(stoup\u00e1n\u00ed \u00f7 (\u03c0 \u00d7 d1)), kde stoup\u00e1n\u00ed = po\u010det z\u00e1vit\u016f \u00d7 axi\u00e1ln\u00ed stoup\u00e1n\u00ed a d1 = pr\u016fm\u011br stoup\u00e1n\u00ed \u0161neku.<\/p>\n

Krok 2:<\/strong> Odhadn\u011bte sou\u010dinitel t\u0159en\u00ed \u03bc pro va\u0161i kombinaci materi\u00e1lu a maziva:<\/p>\n

\u25c8 Kalen\u00fd ocelov\u00fd \u0161nek + kolo z c\u00ednov\u00e9 bronzy + olej ISO VG 220 p\u0159i 20 \u00b0C: \u03bc \u2248 0,05\u20130,08<\/p>\n

\u25c8 Stejn\u00e9 p\u0159i 75 \u00b0C (letn\u00ed provozn\u00ed teplota): \u03bc \u2248 0,04\u20130,06<\/p>\n

\u25c8 Such\u00fd (bez maz\u00e1n\u00ed): \u03bc \u2248 0,12\u20130,18 (mnohem siln\u011bj\u0161\u00ed samosvor, ale velmi vysok\u00e9 opot\u0159eben\u00ed)<\/p>\n

Krok 3:<\/strong> Vypo\u010d\u00edtejte \u00fahel t\u0159en\u00ed \u03c1' = arctgan(\u03bc \u00f7 cos \u03b1), kde \u03b1 = \u00fahel tlaku (standard 20\u00b0).<\/p>\n

Krok 4:<\/strong> Porovnejte \u03bb a \u03c1':<\/p>\n

\u25c8 Pokud je \u03bb men\u0161\u00ed ne\u017e \u03c1' \u2192 samosvorn\u00e9: pohon se za specifikovan\u00fdch podm\u00ednek nepohybuje zp\u011bt<\/p>\n

\u25c8 Pokud je \u03bb v\u011bt\u0161\u00ed ne\u017e \u03c1' \u2192 nen\u00ed samosvorn\u00e9: je mo\u017en\u00fd zp\u011btn\u00fd chod<\/p>\n

\u25c8 Pokud je \u03bb do 1,5\u00b0 od \u03c1' \u2192 hrani\u010dn\u00ed: nespol\u00e9hejte se na samosvorn\u00fd mechanismus jako bezpe\u010dnostn\u00ed prvek<\/p>\n<\/div>\n

\n

Praktick\u00fd p\u0159\u00edklad \u2013 Kontrola samosvornosti sol\u00e1rn\u00edho sledova\u010de p\u0159i teplot\u011b pouzdra 80 \u00b0C<\/p>\n

D\u00e1no: \u0160nek M6, jednochod\u00fd, d1 = 48 mm (standardn\u00ed proporce), axi\u00e1ln\u00ed stoup\u00e1n\u00ed = \u03c0 \u00d7 m = 18,85 mm, stoup\u00e1n\u00ed = 1 \u00d7 18,85 = 18,85 mm<\/p>\n

\u00dahel stoup\u00e1n\u00ed: \u03bb = arctan(18,85 \u00f7 (\u03c0 \u00d7 48)) = arctan(18,85 \u00f7 150,8) = arctan(0,125) = 7,1\u00b0<\/strong><\/p>\n

Sou\u010dinitel t\u0159en\u00ed p\u0159i 80 \u00b0C se syntetick\u00fdm olejem PAO: \u03bc = 0,045<\/p>\n

\u00dahel t\u0159en\u00ed: \u03c1' = arctan(0,045 \u00f7 cos 20\u00b0) = arctan(0,045 \u00f7 0,940) = arctan(0,0479) = 2,7\u00b0<\/strong><\/p>\n

Srovn\u00e1n\u00ed: \u03bb (7,1\u00b0) je v\u011bt\u0161\u00ed ne\u017e \u03c1' (2,7\u00b0) \u2192 S t\u00edmto mazivem se p\u0159i 80 \u00b0C NESAMONISTKUJE<\/strong><\/p>\n

Z\u00e1v\u011br: Tato \u0161nekov\u00e1 h\u0159\u00eddel vy\u017eaduje men\u0161\u00ed pr\u016fm\u011br stoup\u00e1n\u00ed (zv\u011bt\u0161en\u00ed \u00fahlu stoup\u00e1n\u00ed by bylo \u0161patn\u00e9 \u2013 \u00fahel stoup\u00e1n\u00ed je ji\u017e p\u0159\u00edli\u0161 velk\u00fd) nebo men\u0161\u00ed po\u010det start\u016f zde nen\u00ed \u0159e\u0161en\u00edm. \u0158e\u0161en\u00ed je: zmen\u0161en\u00ed pr\u016fm\u011bru stoup\u00e1n\u00ed pro sn\u00ed\u017een\u00ed \u00fahlu stoup\u00e1n\u00ed. P\u0159i d1 = 80 mm: \u03bb = arctan(18,85 \u00f7 251,3) = 4,3\u00b0 \u2192 st\u00e1le v\u011bt\u0161\u00ed ne\u017e 2,7\u00b0 p\u0159i 80 \u00b0C. P\u0159i d1 = 100 mm: \u03bb = 3,4\u00b0 \u2192 tolerance je pouze 0,7\u00b0 \u2013 st\u00e1le riskantn\u00ed. Spr\u00e1vn\u00e9 \u0159e\u0161en\u00ed: pou\u017eit\u00ed maziva s vy\u0161\u0161\u00ed viskozitou (\u03bc = 0,065 p\u0159i 80 \u00b0C s olejem ISO VG 460 \u2192 \u03c1' = 4,0\u00b0 \u2192 tolerance 0,6\u00b0 s d1 = 80 mm). Nebo pou\u017eit\u00ed v\u011bt\u0161\u00edho pr\u016fm\u011bru stoup\u00e1n\u00ed (d1 = 150 mm: \u03bb = 2,3\u00b0 \u2192 samosvorn\u00e9 s toleranc\u00ed 0,4\u00b0 p\u0159i 80 \u00b0C). Tento praktick\u00fd p\u0159\u00edklad ilustruje, pro\u010d je nutn\u00e9 ov\u011b\u0159ovat samosvornost sol\u00e1rn\u00edho sledova\u010de p\u0159i provozn\u00ed teplot\u011b, nikoli ji p\u0159edpokl\u00e1dat.<\/p>\n<\/div>\n

<\/p>\n

P\u011bt b\u011b\u017en\u00fdch chyb p\u0159i v\u00fdpo\u010dtu pom\u011br\u016f \u2013 s opravami<\/h2>\n
\n
\n

Chyba 1 \u2013 Po\u010d\u00edt\u00e1n\u00ed ot\u00e1\u010dek \u0161nekov\u00e9ho z\u00e1vitu m\u00edsto za\u010d\u00e1tk\u016f<\/p>\n

\u0160nek s 5 viditeln\u00fdmi z\u00e1vity (5 dr\u00e1\u017eek pod\u00e9l d\u00e9lky h\u0159\u00eddele) nen\u00ed 5chod\u00fd \u0161nek \u2013 t\u00e9m\u011b\u0159 jist\u011b se jedn\u00e1 o jednochod\u00fd \u0161nek o d\u00e9lce 5 z\u00e1vit\u016f. Po\u010d\u00edtejte po\u010d\u00e1te\u010dn\u00ed body na \u010deln\u00ed plo\u0161e \u0161neku, nikoli z\u00e1vitov\u00e9 pr\u016fchody po d\u00e9lce. Jednochod\u00fd \u0161nek s 60 zuby kola d\u00e1v\u00e1 pom\u011br 60:1. 5chod\u00fd \u0161nek (5 po\u010d\u00e1te\u010dn\u00edch bod\u016f na \u010deln\u00ed plo\u0161e) s 60 zuby kola d\u00e1v\u00e1 pom\u011br 12:1 \u2013 chyba faktoru 5.<\/p>\n<\/div>\n

\n

Chyba 2 \u2013 Zam\u011bniteln\u011b se pou\u017e\u00edvaj\u00ed p\u0159evodov\u00fd a reduk\u010dn\u00ed pom\u011br bez znam\u00e9nka<\/p>\n

\u0160nekov\u00e1 p\u0159evodovka je reduk\u010dn\u00ed pohon \u2013 40:1 znamen\u00e1, \u017ee 40 vstupn\u00edch ot\u00e1\u010dek vytvo\u0159\u00ed jednu v\u00fdstupn\u00ed ot\u00e1\u010dku. Motor v\u017edy poh\u00e1n\u00ed \u0161nek; \u0161nek v\u017edy poh\u00e1n\u00ed kolo. Ve standardn\u00edm provozu nen\u00ed sm\u011br ot\u00e1\u010den\u00ed jednozna\u010dn\u00fd. P\u0159i diskusi o celkov\u00fdch p\u0159evodov\u00fdch pom\u011brech syst\u00e9mu v dokumentaci v\u0161ak v\u017edy explicitn\u011b uv\u00e1d\u011bjte \u201eredukce 40:1\u201c nebo \u201ev\u00fdstupn\u00ed ot\u00e1\u010dky = vstupn\u00ed ot\u00e1\u010dky \u00f7 40\u201c, abyste se vyhnuli omylu \u010dten\u00e1\u0159e, kter\u00fd by to pova\u017eoval za zesilovac\u00ed pom\u011br.<\/p>\n<\/div>\n

\n

Chyba 3 \u2014 Pou\u017eit\u00ed \u00fa\u010dinnosti \u03b7 = 1,0 p\u0159i v\u00fdpo\u010dtu po\u017eadovan\u00e9ho momentu motoru<\/p>\n

Po\u017eadovan\u00fd vstupn\u00ed moment = po\u017eadovan\u00fd v\u00fdstupn\u00ed moment \u00f7 (pom\u011br \u00d7 \u00fa\u010dinnost). Vynech\u00e1n\u00edm \u00fa\u010dinnosti (p\u0159i pou\u017eit\u00ed \u03b7 = 1,0) se po\u017eadovan\u00fd vstupn\u00ed moment podhodnot\u00ed o 15\u2013401 TP3T v z\u00e1vislosti na pom\u011bru. P\u0159i pom\u011bru 40:1 s \u03b7 = 0,78 je po\u017eadavek na vstupn\u00ed moment o 281 TP3T vy\u0161\u0161\u00ed ne\u017e odhad \u03b7 = 1,0. Motor vybran\u00fd na z\u00e1klad\u011b \u03b7 = 1,0 bude poddimenzov\u00e1n, bude pracovat s vy\u0161\u0161\u00edm ne\u017e jmenovit\u00fd moment, vypne se na nadproudovou ochranu nebo sel\u017ee v d\u016fsledku tepeln\u00e9ho p\u0159et\u00ed\u017een\u00ed b\u011bhem n\u011bkolika m\u011bs\u00edc\u016f.<\/p>\n<\/div>\n

\n

Chyba 4 \u2013 Za p\u0159edpokladu samosvornosti pro jak\u00fdkoli p\u0159evodov\u00fd pom\u011br bez kontroly p\u0159i provozn\u00ed teplot\u011b<\/p>\n

Jak je zn\u00e1zorn\u011bno ve v\u00fd\u0161e uveden\u00e9m p\u0159\u00edkladu, samosvornost z\u00e1vis\u00ed na \u00fahlu stoup\u00e1n\u00ed vzhledem k \u00fahlu t\u0159en\u00ed p\u0159i provozn\u00ed teplot\u011b se specifikovan\u00fdm mazivem. Pohon, kter\u00fd se samosvorn\u00ed p\u0159i 20 \u00b0C s miner\u00e1ln\u00edm olejem, se nemus\u00ed samosvorn\u00ed p\u0159i 75 \u00b0C se syntetick\u00fdm olejem na sol\u00e1rn\u00edm sledova\u010di. V\u017edy ov\u011b\u0159ujte p\u0159i maxim\u00e1ln\u00ed provozn\u00ed teplot\u011b se specifikovan\u00fdm mazivem \u2013 nikoli za katalogov\u00fdch okoln\u00edch podm\u00ednek s generick\u00fdm koeficientem t\u0159en\u00ed.<\/p>\n<\/div>\n

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Chyba 5 \u2013 Zad\u00e1n\u00ed necelo\u010d\u00edseln\u00e9ho pom\u011bru, kter\u00fd vy\u017eaduje nestandardn\u00ed po\u010dty zub\u016f<\/p>\n

Proto\u017ee i = z2 \u00f7 z1 a z1 je cel\u00e9 \u010d\u00edslo (1, 2, 3\u2026), mus\u00ed b\u00fdt p\u0159evodov\u00fd pom\u011br i celo\u010d\u00edseln\u00fdm n\u00e1sobkem z1 d\u011blen\u00fdm libovoln\u00fdm cel\u00fdm \u010d\u00edslem z2. Pom\u011bru 33,3:1 nelze dos\u00e1hnout s jednochod\u00fdm \u0161nekem (pot\u0159ebovalo by se z2 = 33,3, co\u017e nen\u00ed cel\u00e9 \u010d\u00edslo). Lze ho dos\u00e1hnout s t\u0159\u00edchod\u00fdm \u0161nekem a z2 = 100 (100 \u00f7 3 = 33,3:1) \u2013 ale toto nen\u00ed samosvorn\u00e9 a vy\u017eaduje nestandardn\u00ed po\u010det zub\u016f. U c\u00edlov\u00fdch pom\u011br\u016f s necelo\u010d\u00edseln\u00fdm po\u010dtem zub\u016f v\u017edy zkontrolujte, zda je v\u00edcestup\u0148ov\u00e9 uspo\u0159\u00e1d\u00e1n\u00ed se standardn\u00edm po\u010dtem zub\u016f prakti\u010dt\u011bj\u0161\u00ed ne\u017e jednostup\u0148ov\u00e9 nestandardn\u00ed proveden\u00ed.<\/p>\n<\/div>\n<\/div>\n

<\/p>\n

\"aplikace<\/div>\n

<\/p>\n

Stru\u010dn\u00fd p\u0159ehled standardn\u00edho pom\u011bru \u2013 Preferovan\u00e9 kombinace po\u010dtu zub\u016f<\/h2>\n

Standardn\u00ed p\u0159evodov\u00e9 pom\u011bry odpov\u00eddaj\u00ed kombinac\u00edm po\u010dtu zub\u016f, kter\u00e9 zabra\u0148uj\u00ed \u0161patn\u00e9 geometrii zub\u016f (p\u0159\u00edli\u0161 m\u00e1lo zub\u016f kola zp\u016fsobuj\u00edc\u00ed pod\u0159ez\u00e1n\u00ed nebo velmi vysok\u00fd po\u010det zub\u016f kola vy\u017eaduj\u00edc\u00ed velk\u00e1 a drah\u00e1 kola). N\u00ed\u017ee uveden\u00e1 tabulka uv\u00e1d\u00ed nej\u010dast\u011bji specifikovan\u00e9 p\u0159evodov\u00e9 pom\u011bry ve v\u00fdrobn\u00ed \u0159ad\u011b spole\u010dnosti Korea Ever-Power:<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Pom\u011br<\/th>\nz1 (za\u010d\u00edn\u00e1)<\/th>\nz2 (zuby kola)<\/th>\nSamosvorn\u00e9<\/th>\nTypick\u00e1 aplikace<\/th>\n<\/tr>\n<\/thead>\n
7.5:1<\/td>\n2<\/td>\n15<\/td>\n\u017d\u00e1dn\u00fd<\/td>\nVysoce \u00fa\u010dinn\u00fd \u0161nekov\u00fd stupe\u0148 s n\u00edzk\u00fdm p\u0159evodov\u00fdm pom\u011brem<\/td>\n<\/tr>\n
10:1<\/td>\n1<\/td>\n10<\/td>\nOkrajov\u00fd<\/td>\nLehk\u00fd aktu\u00e1tor, ov\u011b\u0159te po\u017eadavek na samosvornost<\/td>\n<\/tr>\n
15:1<\/td>\n1<\/td>\n15<\/td>\nAno (hrani\u010dn\u00ed)<\/td>\nBalic\u00ed stroj, rohov\u00fd pohon dopravn\u00edku<\/td>\n<\/tr>\n
20:1<\/td>\n1<\/td>\n20<\/td>\nAno<\/td>\nPohon zem\u011bd\u011blsk\u00fdch stroj\u016f, pro v\u0161eobecn\u00e9 pr\u016fmyslov\u00e9 pou\u017eit\u00ed<\/td>\n<\/tr>\n
30:1<\/td>\n1<\/td>\n30<\/td>\nAno<\/td>\nRu\u010dn\u00ed zved\u00e1k, nastaven\u00ed \u0159\u00e1dku p\u0159esazovac\u00edho stroje<\/td>\n<\/tr>\n
40:1<\/td>\n1<\/td>\n40<\/td>\nAno<\/td>\nCNC 4. os\u00fd st\u016fl, pr\u016fmyslov\u00fd dopravn\u00edk<\/td>\n<\/tr>\n
60:1<\/td>\n1<\/td>\n60<\/td>\nAno<\/td>\nSol\u00e1rn\u00ed sledova\u010d s jednou osou, p\u0159esn\u00e9 polohov\u00e1n\u00ed<\/td>\n<\/tr>\n
80:1<\/td>\n1<\/td>\n80<\/td>\nAno<\/td>\nSol\u00e1rn\u00ed tracker, l\u00e9ka\u0159sk\u00e9 polohov\u00e1n\u00ed<\/td>\n<\/tr>\n
100:1<\/td>\n1<\/td>\n100<\/td>\nAno<\/td>\nPomalub\u011b\u017en\u00e9 t\u011b\u017ek\u00e9 stroje, pohony ventil\u016f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Spole\u010dnost Korea Ever-Power vyr\u00e1b\u00ed v\u0161echny p\u0159evodov\u00e9 pom\u011bry v t\u00e9to tabulce jako standardn\u00ed katalogov\u00e9 polo\u017eky v modul\u00e1rn\u00ed \u0159ad\u011b M1 a\u017e M12. Nestandardn\u00ed p\u0159evodov\u00e9 pom\u011bry vy\u017eaduj\u00edc\u00ed zak\u00e1zkov\u00fd po\u010det zub\u016f jsou akceptov\u00e1ny \u2013 kontaktujte n\u00e1s<\/a> s konkr\u00e9tn\u00edm po\u017eadavkem na po\u010det zub\u016f a my potvrd\u00edme, zda je nutn\u00e9 po\u0159\u00eddit speci\u00e1ln\u00ed odvalovac\u00ed fr\u00e9zu. Pro kompletn\u00ed uzav\u0159en\u00e9 pohonn\u00e9 jednotky s jak\u00fdmkoli z t\u011bchto standardn\u00edch p\u0159evod\u016f, \u0161nekov\u00e9 reduktory<\/a> jsou k dispozici jako ut\u011bsn\u011bn\u00e9 jednotky p\u0159ipraven\u00e9 k mont\u00e1\u017ei.<\/p>\n

\"souvisej\u00edc\u00ed<\/p>\n

\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n
\nZn\u00e1m po\u017eadovan\u00e9 v\u00fdstupn\u00ed ot\u00e1\u010dky a ot\u00e1\u010dky motoru. Je pom\u011br = ot\u00e1\u010dky motoru \u00f7 v\u00fdstupn\u00ed ot\u00e1\u010dky v\u017edy spr\u00e1vn\u00fd pro \u0161nekov\u00fd pohon?<\/summary>\n
Ano, u standardn\u00edho \u0161nekov\u00e9ho pohonu, kde je \u0161nek hnac\u00ed prvek a kolo je poh\u00e1n\u011bn\u00fd prvek. Reduk\u010dn\u00ed pom\u011br i = vstupn\u00ed ot\u00e1\u010dky (\u0161neku) \u00f7 v\u00fdstupn\u00ed ot\u00e1\u010dky (kola). To d\u00e1v\u00e1 po\u017eadovanou hodnotu z2 \u00f7 z1. Zaokrouhlete na nejbli\u017e\u0161\u00ed celo\u010d\u00edselnou kombinaci \u2013 nap\u0159\u00edklad po\u017eadovan\u00e9ho pom\u011bru 38,5:1 lze dos\u00e1hnout jako z2 = 77, z1 = 2 (dvouchod\u00fd \u0161nek, 77zub\u00e9 kolo, p\u0159esn\u00fdch 38,5:1) nebo p\u0159ibli\u017en\u011b jako z2 = 39, z1 = 1 (39:1, co\u017e d\u00e1v\u00e1 v\u00fdstupn\u00ed rychlost o 2,51 TP3T ni\u017e\u0161\u00ed ne\u017e c\u00edlov\u00e1 \u2013 p\u0159ijateln\u00e1 pro v\u011bt\u0161inu aplikac\u00ed). Spr\u00e1vn\u00e1 volba z\u00e1vis\u00ed na tom, zda je p\u0159esn\u00fd pom\u011br kritick\u00fd pro \u00fa\u010dely indexov\u00e1n\u00ed nebo \u010dasov\u00e1n\u00ed.<\/div>\n<\/details>\n
\nJak ur\u010d\u00edm v\u00fdstupn\u00ed to\u010div\u00fd moment \u0161nekov\u00e9ho pohonu, kdy\u017e zn\u00e1m pouze jmenovit\u00fd to\u010div\u00fd moment motoru?<\/summary>\n
V\u00fdstupn\u00ed to\u010div\u00fd moment = jmenovit\u00fd to\u010div\u00fd moment motoru \u00d7 p\u0159evodov\u00fd pom\u011br \u00d7 \u00fa\u010dinnost. Nap\u0159\u00edklad: jmenovit\u00fd to\u010div\u00fd moment motoru 2,8 Nm, p\u0159evodov\u00fd pom\u011br 40:1, \u00fa\u010dinnost 0,78: v\u00fdstupn\u00ed to\u010div\u00fd moment = 2,8 \u00d7 40 \u00d7 0,78 = 87,4 Nm. Toto je trval\u00fd v\u00fdstupn\u00ed to\u010div\u00fd moment dostupn\u00fd p\u0159i jmenovit\u00e9m zat\u00ed\u017een\u00ed motoru. Pro \u0161pi\u010dkov\u00fd to\u010div\u00fd moment dostupn\u00fd p\u0159i zablokov\u00e1n\u00ed motoru (zablokovan\u00fd rotor) pou\u017eijte ve stejn\u00e9m vzorci to\u010div\u00fd moment p\u0159i zablokov\u00e1n\u00ed motoru (obvykle 2,5\u20133,5\u00d7 jmenovit\u00fd to\u010div\u00fd moment) \u2013 \u0161pi\u010dkov\u00fd to\u010div\u00fd moment je v\u0161ak omezen na kr\u00e1tk\u00e9 intervaly a nem\u011bl by se pou\u017e\u00edvat pro v\u00fdpo\u010dty trval\u00e9ho zat\u00ed\u017een\u00ed. Datov\u00fd list motoru by m\u011bl uv\u00e1d\u011bt jmenovit\u00fd to\u010div\u00fd moment i to\u010div\u00fd moment p\u0159i zablokov\u00e1n\u00ed jako samostatn\u00e9 specifikace.<\/div>\n<\/details>\n
\nMohu s \u0161nekov\u00fdm p\u0159evodem dos\u00e1hnout libovoln\u00e9ho p\u0159evodov\u00e9ho pom\u011bru, nebo existuj\u00ed standardn\u00ed p\u0159evodov\u00e9 pom\u011bry, kter\u00e9 bych m\u011bl pou\u017e\u00edvat?<\/summary>\n
V principu lze dos\u00e1hnout libovoln\u00e9ho celo\u010d\u00edseln\u00e9ho n\u00e1sobku po\u010dtu z\u00e1vit\u016f zad\u00e1n\u00edm odpov\u00eddaj\u00edc\u00edho po\u010dtu zub\u016f kola. V praxi existuj\u00ed minim\u00e1ln\u00ed a maxim\u00e1ln\u00ed praktick\u00e9 po\u010dty zub\u016f. Minim\u00e1ln\u00ed po\u010det zub\u016f kola, aby se zabr\u00e1nilo pod\u0159ez\u00e1n\u00ed, je p\u0159ibli\u017en\u011b 17\u201320 zub\u016f (pod touto hodnotou je ko\u0159en zubu kola od\u0159ez\u00e1v\u00e1n procesem odvalov\u00e1n\u00ed). Maxim\u00e1ln\u00ed praktick\u00fd po\u010det zub\u016f, ne\u017e se kolo stane extr\u00e9mn\u011b velk\u00fdm a drah\u00fdm, je pro v\u011bt\u0161inu aplikac\u00ed p\u0159ibli\u017en\u011b 100\u2013120 zub\u016f. To d\u00e1v\u00e1 praktick\u00fd rozsah p\u0159evodov\u00fdch pom\u011br\u016f jednochod\u00e9ho \u0161neku p\u0159ibli\u017en\u011b 17:1 a\u017e 120:1. Pro p\u0159evody mimo tento rozsah se pou\u017e\u00edvaj\u00ed dvoustup\u0148ov\u00e1 uspo\u0159\u00e1d\u00e1n\u00ed nebo v\u00edcechod\u00e9 \u0161neky. Zak\u00e1zkov\u00e9 p\u0159evody (nap\u0159. p\u0159esn\u011b 47:1) jsou vyrobiteln\u00e9 \u2013 jednochod\u00e9 kolo se 47 zuby nen\u00ed standardn\u00ed polo\u017ekou, ale je vyrobiteln\u00e9 se standardn\u00edm n\u00e1strojem v b\u011b\u017en\u00e9 dodac\u00ed lh\u016ft\u011b.<\/div>\n<\/details>\n
\nJak p\u0159evodov\u00fd pom\u011br ovliv\u0148uje \u00fahlovou v\u016fli \u0161nekov\u00e9ho p\u0159evodu?<\/summary>\n
V\u016fle v soukol\u00ed \u0161nekov\u00e9ho kola se obvykle ud\u00e1v\u00e1 jako line\u00e1rn\u00ed rozm\u011br na rozte\u010dn\u00e9 kru\u017enici \u0161nekov\u00e9ho kola (v milimetrech). Pro p\u0159evod na \u00fahlovou v\u016fli na v\u00fdstupn\u00edm h\u0159\u00eddeli: \u00fahlov\u00e1 v\u016fle (radi\u00e1ny) = line\u00e1rn\u00ed v\u016fle (mm) \u00f7 polom\u011br rozte\u010dn\u00e9 kru\u017enice (mm). P\u0159eve\u010fte na obloukov\u00e9 minuty vyn\u00e1soben\u00edm radi\u00e1n\u016f \u010d\u00edslem 3438. Pro kolo M4 s 60 zuby (polom\u011br rozte\u010dn\u00e9 kru\u017enice = 120 mm) s v\u016fl\u00ed 0,08 mm: \u00fahlov\u00e1 v\u016fle = 0,08 \u00f7 120 = 0,000667 radi\u00e1n\u016f = 2,3 obloukov\u00fdch minut. Vy\u0161\u0161\u00ed p\u0159evodov\u00e9 pom\u011bry (v\u00edce zub\u016f kola, v\u011bt\u0161\u00ed rozte\u010dn\u00e1 kru\u017enice) znamenaj\u00ed, \u017ee stejn\u00e1 line\u00e1rn\u00ed v\u016fle se prom\u00edt\u00e1 do men\u0161\u00ed \u00fahlov\u00e9 chyby na v\u00fdstupu \u2013 co\u017e je jeden z d\u016fvod\u016f, pro\u010d \u0161nekov\u00e9 pohony s vysok\u00fdmi p\u0159evodov\u00fdmi pom\u011bry mohou dos\u00e1hnout pou\u017eiteln\u00e9 p\u0159esnosti polohov\u00e1n\u00ed i p\u0159i st\u0159edn\u00edch hodnot\u00e1ch line\u00e1rn\u00ed v\u016fle.<\/div>\n<\/details>\n
\nM\u016fj po\u017eadovan\u00fd pom\u011br je 66,7:1 \u2013 jak ho p\u0159esn\u011b specifikuji?<\/summary>\n
66,7:1 = p\u0159esn\u011b 200:3. To vy\u017eaduje z1 = 3 starty na \u0161neku a z2 = 200 zub\u016f na kole. Kolo s 200 zuby u jak\u00e9hokoli praktick\u00e9ho modulu bude velmi velk\u00e9 a drah\u00e9. Prakti\u010dt\u011bj\u0161\u00ed p\u0159\u00edstup: zeptejte se, zda je pom\u011br 66,7:1 skute\u010dn\u011b nezbytn\u00fd. Pro v\u011bt\u0161inu aplikac\u00ed \u0159\u00edzen\u00ed polohy by pom\u011br 65:1 (z1=1, z2=65) nebo 67:1 (z1=1, z2=67) poskytoval v\u00fdstupn\u00ed rychlost v rozmez\u00ed 2,61 TP3T od c\u00edlov\u00e9 hodnoty \u2013 obvykle p\u0159ijateln\u00fd v polohov\u00e1n\u00ed s otev\u0159enou smy\u010dkou \u00fapravou po\u010dtu krok\u016f motoru. Pokud je pot\u0159eba p\u0159esn\u00fd pom\u011br (nap\u0159\u00edklad k dosa\u017een\u00ed p\u0159esn\u00e9ho vztahu mezi impulsy enkod\u00e9ru motoru a v\u00fdstupn\u00edm \u00fahlem), kontaktujte n\u00e1s a proberte s n\u00e1mi dvoustup\u0148ovou variantu: prvn\u00ed stupe\u0148 s pom\u011brem 6,67:1 a druh\u00fd stupe\u0148 s pom\u011brem 10:1, oboj\u00ed je dosa\u017eiteln\u00e9 se standardn\u00edm po\u010dtem zub\u016f a kompaktn\u00edm uspo\u0159\u00e1d\u00e1n\u00edm na sebe navz\u00e1jem.<\/div>\n<\/details>\n
\nKdy\u017e se d\u00edv\u00e1m na h\u0159\u00eddel \u0161neku, napo\u010d\u00edt\u00e1m na jeho povrchu 8 z\u00e1vit\u016f. Znamen\u00e1 to, \u017ee je to 8chod\u00fd \u0161nek?<\/summary>\n
T\u00e9m\u011b\u0159 jist\u011b ne. Po\u010d\u00edt\u00e1te ot\u00e1\u010dky z\u00e1vitu \u2013 po\u010det ob\u011bh\u016f z\u00e1vitu kolem v\u00e1lce pod\u00e9l d\u00e9lky \u0161neku. U \u0161neku s jedn\u00edm chodem a 8 ot\u00e1\u010dkami z\u00e1vitu je st\u00e1le z1 = 1. Spr\u00e1vn\u00fd zp\u016fsob, jak ur\u010dit po\u010det z\u00e1vit\u016f, je pod\u00edvat se na \u010deln\u00ed plochu h\u0159\u00eddele \u0161neku (ploch\u00e1 plocha na obou konc\u00edch) a spo\u010d\u00edtat po\u010det viditeln\u00fdch po\u010d\u00e1te\u010dn\u00edch bod\u016f z\u00e1vitu \u2013 ka\u017ed\u00fd z nich je samostatn\u00fd za\u010d\u00e1tek. Jedna dr\u00e1\u017eka viditeln\u00e1 na \u010deln\u00ed plo\u0161e = jednoduch\u00fd chod. Dv\u011b dr\u00e1\u017eky vzd\u00e1len\u00e9 od sebe o 180\u00b0 = dvouchod\u00fd chod. Po\u010det z\u00e1vit\u016f z\u00e1vitu pod\u00e9l d\u00e9lky h\u0159\u00eddele souvis\u00ed s d\u00e9lkou \u0161neku a \u00fahlem stoup\u00e1n\u00ed, nikoli s po\u010dtem z\u00e1vit\u016f, kter\u00fd ur\u010duje p\u0159evodov\u00fd pom\u011br.<\/div>\n<\/details>\n
\nJak\u00e9 informace m\u00e1m poskytnout spole\u010dnosti Korea Ever-Power, abych z\u00edskal\/a spr\u00e1vnou cenovou nab\u00eddku na \u0161nekov\u00fd p\u0159evod?<\/summary>\n
Minim\u00e1ln\u00ed informace pro cenovou nab\u00eddku: (1) po\u017eadovan\u00fd p\u0159evodov\u00fd pom\u011br; (2) vstupn\u00ed ot\u00e1\u010dky \u0161nekov\u00e9ho h\u0159\u00eddele v ot\/min; (3) po\u017eadovan\u00fd v\u00fdstupn\u00ed to\u010div\u00fd moment v Nm (nebo v\u00fdstupn\u00ed v\u00fdkon v kW a v\u00fdstupn\u00ed ot\u00e1\u010dky v ot\/min \u2013 z nich m\u016f\u017eeme odvodit to\u010div\u00fd moment); (4) zda je vy\u017eadov\u00e1no samosvorn\u00e9 proveden\u00ed; (5) uspo\u0159\u00e1d\u00e1n\u00ed h\u0159\u00eddele (standardn\u00ed pravo\u00fahl\u00e9 nebo jin\u00e9); (6) pr\u016fm\u011br otvoru pro kolo a zda je pot\u0159eba dr\u00e1\u017eka pro pero; (7) provozn\u00ed prost\u0159ed\u00ed (vnit\u0159n\u00ed, venkovn\u00ed, pob\u0159e\u017en\u00ed, chemick\u00fd kontakt) pro v\u00fdb\u011br materi\u00e1lu. S t\u011bmito sedmi parametry m\u016f\u017eeme poskytnout doporu\u010den\u00ed modulu, specifikaci materi\u00e1lu, t\u0159\u00eddu p\u0159esnosti a potvrzenou cenu do jednoho pracovn\u00edho dne. Chyb\u011bj\u00edc\u00ed kter\u00e1koli z prvn\u00edch t\u0159\u00ed polo\u017eek znamen\u00e1, \u017ee se na to zept\u00e1me p\u0159ed cenovou nab\u00eddkou \u2013 zasl\u00e1n\u00ed v\u0161ech sedmi polo\u017eek p\u0159edem u\u0161et\u0159\u00ed cestu tam a zp\u011bt.<\/div>\n<\/details>\n

<\/p>\n

\n

Nechte si ov\u011b\u0159it v\u00fdpo\u010det pom\u011bru \u2013 a pot\u00e9 si vy\u017e\u00e1dejte cenovou nab\u00eddku<\/h2>\n

Za\u0161lete n\u00e1m po\u017eadovan\u00fd p\u0159evodov\u00fd pom\u011br, v\u00fdstupn\u00ed to\u010div\u00fd moment, vstupn\u00ed ot\u00e1\u010dky a zda je pot\u0159eba samosvornost. N\u00e1\u0161 technick\u00fd t\u00fdm potvrd\u00ed spr\u00e1vnou kombinaci z1\/z2, odhad \u00fa\u010dinnosti a d\u016fsledky pro dimenzov\u00e1n\u00ed motoru \u2013 pot\u00e9 do jednoho pracovn\u00edho dne poskytne specifikaci a cenu.<\/p>\n

Ode\u0161lete sv\u016fj pom\u011br k ov\u011b\u0159en\u00ed<\/a>
\nProch\u00e1zet produkty pro \u0161nekov\u00e9 p\u0159evody<\/a><\/div>\n<\/div>\n<\/div>\n

St\u0159iha\u010d: Cxm<\/p>\n<\/div>\n

 <\/p>","protected":false},"excerpt":{"rendered":"

  Jak vypo\u010d\u00edtat p\u0159evodov\u00fd pom\u011br \u0161nekov\u00e9ho p\u0159evodu \u2013 Technick\u00fd pr\u016fvodce s praktick\u00fdmi p\u0159\u00edklady Chybn\u00fd p\u0159evodov\u00fd pom\u011br ve specifikaci \u0161nekov\u00e9ho p\u0159evodu znamen\u00e1 v\u011bt\u0161\u00ed ztr\u00e1tu pen\u011bz ne\u017e samotn\u00e1 soukol\u00ed \u2013 \u0161patn\u00e9 v\u00fdstupn\u00ed ot\u00e1\u010dky znamenaj\u00ed \u0161patn\u00fd v\u00fdb\u011br motoru, \u0161patn\u00fd to\u010div\u00fd moment znamen\u00e1 poddimenzovan\u00e9 komponenty a \u0161patn\u00fd p\u0159edpoklad samosvornosti znamen\u00e1 dodate\u010dnou mont\u00e1\u017e brzdy. Tento pr\u016fvodce v\u00e1s provede [\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":[4774],"tags":[],"class_list":["post-1820","post","type-post","status-publish","format-standard","hentry","category-worm-gear"],"_links":{"self":[{"href":"https:\/\/wormwheelgear.top\/cs\/wp-json\/wp\/v2\/posts\/1820","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wormwheelgear.top\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wormwheelgear.top\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wormwheelgear.top\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wormwheelgear.top\/cs\/wp-json\/wp\/v2\/comments?post=1820"}],"version-history":[{"count":4,"href":"https:\/\/wormwheelgear.top\/cs\/wp-json\/wp\/v2\/posts\/1820\/revisions"}],"predecessor-version":[{"id":1825,"href":"https:\/\/wormwheelgear.top\/cs\/wp-json\/wp\/v2\/posts\/1820\/revisions\/1825"}],"wp:attachment":[{"href":"https:\/\/wormwheelgear.top\/cs\/wp-json\/wp\/v2\/media?parent=1820"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wormwheelgear.top\/cs\/wp-json\/wp\/v2\/categories?post=1820"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wormwheelgear.top\/cs\/wp-json\/wp\/v2\/tags?post=1820"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}