{"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\/sk\/how-to-calculate-worm-gear-ratio-complete-engineering-guide-with-worked-examples\/","title":{"rendered":"Ako vypo\u010d\u00edta\u0165 prevodov\u00fd pomer z\u00e1vitovky \u2013 kompletn\u00fd technick\u00fd sprievodca s praktick\u00fdmi pr\u00edkladmi"},"content":{"rendered":"

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Ako vypo\u010d\u00edta\u0165 prevodov\u00fd pomer z\u00e1vitovky \u2013 In\u017einierska pr\u00edru\u010dka s praktick\u00fdmi pr\u00edkladmi<\/h1>\n

Nespr\u00e1vny prevodov\u00fd pomer v \u0161pecifik\u00e1cii z\u00e1vitovkov\u00e9ho pohonu znamen\u00e1 viac pe\u0148az\u00ed ako samotn\u00e1 prevodovka \u2013 nespr\u00e1vne v\u00fdstupn\u00e9 ot\u00e1\u010dky znamenaj\u00fa nespr\u00e1vny v\u00fdber motora, nespr\u00e1vny kr\u00fatiaci moment znamen\u00e1 poddimenzovan\u00e9 komponenty a nespr\u00e1vny predpoklad samosvornosti znamen\u00e1 dodato\u010dn\u00fa mont\u00e1\u017e brzdy. T\u00e1to pr\u00edru\u010dka v\u00e1s prevedie ka\u017ed\u00fdm potrebn\u00fdm v\u00fdpo\u010dtom s re\u00e1lnymi \u010d\u00edslami v ka\u017edom pr\u00edklade.<\/p>\n

Z\u00edskajte podporu pre v\u00fdpo\u010det pomeru<\/a><\/p>\n<\/div>\n<\/div>\n

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Pre\u010do je chyba vo v\u00fdpo\u010dte prevodov\u00e9ho pomeru drah\u0161ia ako samotn\u00fd prevodov\u00fd stupe\u0148<\/h2>\n

Kon\u0161trukt\u00e9r, ktor\u00fd \u0161pecifikuje z\u00e1vitovkov\u00fd prevodov\u00fd pohon pre sol\u00e1rny sledova\u010d, nastav\u00ed cie\u013eov\u00fa v\u00fdstupn\u00fa r\u00fdchlos\u0165 na 0,25 ot.\/min z motora s 1450 ot.\/min \u2013 \u010do vy\u017eaduje celkov\u00fd prevodov\u00fd pomer 5800:1. Vypo\u010d\u00edta pomer z\u00e1vitovkov\u00e9ho prevodu ako 58:1 z nespr\u00e1vneho od\u010d\u00edtania po\u010dtu zubov (58 zubov na kolese, ale 2-chodov\u00fd z\u00e1vitovkov\u00fd prevod \u2013 skuto\u010dn\u00fd pomer 29:1). Motor be\u017e\u00ed, sledova\u010d sa pohybuje a skuto\u010dn\u00e1 v\u00fdstupn\u00e1 r\u00fdchlos\u0165 je 0,5 ot.\/min namiesto 0,25 ot.\/min. Sledova\u010d prekro\u010d\u00ed svoj cie\u013eov\u00fd uhol a riadiaci syst\u00e9m sa pohybuje. Ozuben\u00e9 koles\u00e1 s\u00fa u\u017e nain\u0161talovan\u00e9 na 200 jednotk\u00e1ch sledova\u010da predt\u00fdm, ako sa zist\u00ed chyba.<\/p>\n

N\u00e1klady na v\u00fdmenu ozuben\u00e9ho kolesa s\u00fa zna\u010dn\u00e9. N\u00e1klady na oneskorenie projektu s\u00fa vy\u0161\u0161ie. Hlavnou pr\u00ed\u010dinou v\u0161ak bola jedin\u00e1 v\u00fdpo\u010dtov\u00e1 chyba, ktorej vykonanie trvalo menej ako min\u00fatu: z\u00e1mena po\u010dtu zubov s prevodov\u00fdm pomerom ignorovan\u00edm po\u010dtu za\u010dat\u00ed z\u00e1vitovky. T\u00e1to pr\u00edru\u010dka predch\u00e1dza tejto chybe t\u00fdm, \u017ee \u00faplne vysvet\u013euje v\u00fdpo\u010det \u2013 vr\u00e1tane be\u017enej pasce po\u010d\u00edtania ot\u00e1\u010dok z\u00e1vitovky namiesto za\u010dat\u00ed z\u00e1vitovky.<\/p>\n

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

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Z\u00e1kladn\u00fd vzorec \u2013 a jedna chyba, ktor\u00e1 sp\u00f4sobuje v\u00e4\u010d\u0161inu ch\u00fdb<\/h2>\n
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Vzorec pre prevodov\u00fd pomer z\u00e1vitovky<\/p>\n

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

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

\u25a0 i = reduk\u010dn\u00fd pomer prevodov\u00e9ho stup\u0148a (v\u00fdstupn\u00e9 ot\u00e1\u010dky na jednu vstupn\u00fa ot\u00e1\u010dku: i = vstupn\u00e9 ot\u00e1\u010dky \u00f7 v\u00fdstupn\u00e9 ot\u00e1\u010dky)<\/p>\n

\u25a0 z2 = po\u010det zubov na z\u00e1vitovkovom kolese<\/p>\n

\u25a0 z1 = po\u010det za\u010d\u00edna<\/strong> na hriadeli z\u00e1vitovky \u2013 NIE po\u010det z\u00e1vitov alebo prechodov z\u00e1vitu vidite\u013en\u00fdch na hriadeli z\u00e1vitovky<\/p>\n<\/div>\n

Naj\u010dastej\u0161ou chybou vo v\u00fdpo\u010dte je pou\u017eitie po\u010dtu ot\u00e1\u010dok z\u00e1vitu z\u00e1vitovky alebo vidite\u013en\u00e9ho po\u010dtu z\u00e1vitov namiesto po\u010dtu z\u00e1vitov. Jednochodov\u00e1 z\u00e1vitovka so 40 z\u00e1vitmi omotan\u00fdmi okolo hriade\u013ea m\u00e1 st\u00e1le z1 = 1. Dvojchodov\u00e1 z\u00e1vitovka s 20 z\u00e1vitmi na z\u00e1vit m\u00e1 st\u00e1le z1 = 2. Po\u010det z\u00e1vitov z\u00e1vitovky je funkciou d\u013a\u017eky z\u00e1vitovky a uhla st\u00fapania \u2013 nem\u00e1 ni\u010d spolo\u010dn\u00e9 s po\u010dtom z\u00e1vitov, ktor\u00fd ur\u010duje prevodov\u00fd pomer.<\/p>\n

Ako ur\u010di\u0165 po\u010det z\u00e1vitov na existuj\u00facom hriadeli z\u00e1vitovky: pozrite sa na \u010deln\u00fa plochu z\u00e1vitovky. Spo\u010d\u00edtajte po\u010det vidite\u013en\u00fdch bodov za\u010diatku z\u00e1vitu na \u010delnej ploche \u2013 ka\u017ed\u00fd bod, kde z\u00e1vit za\u010d\u00edna, predstavuje jeden za\u010diatok. Jeden za\u010diato\u010dn\u00fd bod = jednoduch\u00fd z\u00e1vit. Dva za\u010diato\u010dn\u00e9 body, od seba vzdialen\u00e9 180 stup\u0148ov = dva z\u00e1vity. Tri za\u010diato\u010dn\u00e9 body, od seba vzdialen\u00e9 120 stup\u0148ov = tri z\u00e1vity. Toto je jedin\u00fd spo\u013eahliv\u00fd sp\u00f4sob, ako ur\u010di\u0165 po\u010det z\u00e1vitov z fyzick\u00e9ho dielu, ke\u010f nie je k dispoz\u00edcii v\u00fdkres alebo \u010d\u00edslo dielu.<\/p>\n

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Vyrie\u0161en\u00fd pr\u00edklad 1 \u2013 Jednoduch\u00fd pomer zo zn\u00e1mych komponentov<\/h2>\n
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Vzh\u013eadom na:<\/p>\n

\u25b7 Po\u010det zubov z\u00e1vitovkov\u00e9ho kolesa: z2 = 40<\/p>\n

\u25b7 Po\u010det za\u010diatkov z\u00e1vitovky: z1 = 1 (z\u00e1vitovka s jedn\u00fdm za\u010diatkom z\u00e1vitu \u2013 jeden bod za\u010diatku z\u00e1vitu na \u010delnej ploche)<\/p>\n

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

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

Overenie:<\/p>\n

Ot\u00e1\u010dky motora 1450 ot.\/min \u2192 v\u00fdstupn\u00e9 ot\u00e1\u010dky = 1450 \u00f7 40 = 36,25 ot.\/min.<\/strong><\/p>\n

In\u00fdmi slovami: z\u00e1vitovka vykon\u00e1 40 pln\u00fdch ot\u00e1\u010dok pri ka\u017edej ot\u00e1\u010dke kolesa. Pri ot\u00e1\u010dkach motora 1450 ot.\/min sa koleso oto\u010d\u00ed raz za 1,655 sekundy.<\/p>\n<\/div>\n

Pracovan\u00fd pr\u00edklad 2 \u2013 V\u00fdpo\u010det cel\u00e9ho pohonu vr\u00e1tane kr\u00fatiaceho momentu a \u00fa\u010dinnosti<\/h2>\n
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Pou\u017eitie: Azimut\u00e1lny pohon sol\u00e1rneho sledova\u010da<\/p>\n

Vzh\u013eadom na:<\/strong> Motor = 90 W, 1400 ot.\/min.; po\u017eadovan\u00e9 v\u00fdstupn\u00e9 ot\u00e1\u010dky = 18 ot.\/min.; odhadovan\u00e1 \u00fa\u010dinnos\u0165 z\u00e1vitovkov\u00e9ho pohonu pri tomto pomere = 0,78<\/p>\n

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

i = vstupn\u00e9 ot\u00e1\u010dky \u00f7 v\u00fdstupn\u00e9 ot\u00e1\u010dky = 1400 \u00f7 18 = 77.8:1<\/strong><\/p>\n

Zaokr\u00fahlite na najbli\u017e\u0161\u00ed praktick\u00fd po\u010det zubov: z2 = 78 zubov, z1 = 1 za\u010diatok \u2192 skuto\u010dn\u00fd prevodov\u00fd pomer = 78:1 \u2192 v\u00fdstupn\u00e9 ot\u00e1\u010dky = 1400 \u00f7 78 = 17,95 ot.\/min.<\/strong> (prijate\u013en\u00e9)<\/p>\n

Krok 2 \u2013 V\u00fdpo\u010det v\u00fdstupn\u00e9ho kr\u00fatiaceho momentu:<\/p>\n

Vstupn\u00fd kr\u00fatiaci moment motora = (V\u00fdkon motora \u00d7 60) \u00f7 (2\u03c0 \u00d7 ot\u00e1\u010dky motora) = (90 \u00d7 60) \u00f7 (2\u03c0 \u00d7 1400) = 0,614 Nm<\/strong><\/p>\n

V\u00fdstupn\u00fd kr\u00fatiaci moment = kr\u00fatiaci moment motora \u00d7 prevodov\u00fd pomer \u00d7 \u00fa\u010dinnos\u0165 = 0,614 \u00d7 78 \u00d7 0,78 = 37,3 Nm<\/strong><\/p>\n

Krok 3 \u2013 Overenie dimenzovania motora:<\/p>\n

Po\u017eadovan\u00fd v\u00fdstupn\u00fd kr\u00fatiaci moment z anal\u00fdzy za\u0165a\u017eenia vetrom: 35 Nm<\/p>\n

Vypo\u010d\u00edtan\u00fd v\u00fdstupn\u00fd kr\u00fatiaci moment: 37,3 Nm<\/p>\n

Mar\u017ea = (37,3 \u2013 35) \u00f7 35 = 6.6% \u2013 margin\u00e1lne.<\/strong> Zv\u00e1\u017ete motor s v\u00fdkonom 120 W alebo overte v\u00fdpo\u010det za\u0165a\u017eenia vetrom. Pre vonkaj\u0161ie pohony sledovac\u00edch zariaden\u00ed sa odpor\u00fa\u010da technick\u00e1 rezerva aspo\u0148 251 TP3T nad maxim\u00e1lnym kr\u00fatiacim momentom vetra, aby sa zoh\u013eadnili faktory n\u00e1razov vetra a zv\u00fd\u0161enie viskozity maziva pri studenom \u0161tarte.<\/p>\n<\/div>\n

Pr\u00edklad spracovania 3 \u2013 Sp\u00e4tn\u00fd postup od cie\u013eov\u00e9ho pomeru k v\u00fdberu po\u010dtu zubov<\/h2>\n
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Pou\u017eitie: CNC oto\u010dn\u00fd st\u00f4l so 4. osou<\/p>\n

Vzh\u013eadom na:<\/strong> Po\u017eadovan\u00fd pomer = presne 36:1 (vhodn\u00e9 pre indexovanie o 360\u00b0 v 10\u00b0 krokoch \u2013 jedna ot\u00e1\u010dka motora = 0,1\u00b0 v\u00fdstupu); potrebn\u00e9 samosvorn\u00e9 uzamknutie<\/p>\n

Krok 1 \u2013 Ur\u010denie po\u010dtu za\u010diato\u010dn\u00edkov:<\/p>\n

Vy\u017eaduje sa samosvor \u2192 pou\u017eite z1 = 1 (jednochodov\u00fd z\u00e1vitovkov\u00fd z\u00e1vitovkov\u00fd mechanizmus \u2013 najni\u017e\u0161\u00ed uhol st\u00fapania pre maxim\u00e1lnu spo\u013eahlivos\u0165 samosvorn\u00e9ho mechanizmu)<\/p>\n

Pre z1 = 1: z2 = i \u00d7 z1 = 36 \u00d7 1 = 36 zubov na kolese<\/strong><\/p>\n

Krok 2 \u2013 Skontrolujte podrezanie (minim\u00e1lny po\u010det zubov):<\/p>\n

Pre z\u00e1vitovkov\u00e9 koleso je minim\u00e1lny praktick\u00fd po\u010det zubov, aby sa predi\u0161lo siln\u00e9mu podrezaniu, pribli\u017ene 17 \u2013 20 zubov. 36 zubov je v\u00fdrazne nad t\u00fdmto limitom \u2013 nie je probl\u00e9m s podrezan\u00edm.<\/p>\n

Krok 3 \u2013 Alternat\u00edva: mohol by fungova\u0165 aj dvojchodov\u00fd \u010derv?<\/p>\n

Pri z1 = 2: z2 = 36 \u00d7 2 = 72 zubov \u2192 koleso sa fyzicky zv\u00e4\u010d\u0161\u00ed (viac materi\u00e1lu, vy\u0161\u0161ie n\u00e1klady, potrebn\u00e9 v\u00e4\u010d\u0161ie puzdro)<\/p>\n

Tie\u017e: 2-chodov\u00fd z\u00e1vitovkov\u00fd z\u00e1vitovkov\u00fd syst\u00e9m m\u00e1 pribli\u017ene 2\u00d7 v\u00e4\u010d\u0161\u00ed uhol n\u00e1behu \u2192 nemus\u00ed sa spo\u013eahlivo samosvori\u0165 za v\u0161etk\u00fdch podmienok mazania.<\/p>\n

Z\u00e1ver: z1 = 1, z2 = 36 je spr\u00e1vna \u0161pecifik\u00e1cia.<\/strong> Je kompaktn\u00fd, spo\u013eahlivo sa samosvor\u00ed a poskytuje presn\u00fd po\u017eadovan\u00fd pomer 36:1.<\/p>\n<\/div>\n

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\"kon\u0161trukcia<\/div>\n

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Ako prevodov\u00fd pomer ovplyv\u0148uje \u00fa\u010dinnos\u0165 \u2013 \u010d\u00edsla, ktor\u00e9 potrebujete pre dimenzovanie motora<\/h2>\n

\u00da\u010dinnos\u0165 z\u00e1vitovkov\u00e9ho prevodu kles\u00e1 so zvy\u0161uj\u00facim sa reduk\u010dn\u00fdm pomerom. Toto je geometrick\u00fd d\u00f4sledok: vy\u0161\u0161\u00ed pomer vy\u017eaduje men\u0161\u00ed uhol predstihu a men\u0161\u00ed uhol predstihu smeruje viac kontaktnej sily do trenia, ne\u017e do u\u017eito\u010dn\u00e9ho v\u00fdstupn\u00e9ho kr\u00fatiaceho momentu. Tento vz\u0165ah je spojit\u00fd a predv\u00eddate\u013en\u00fd \u2013 ak pozn\u00e1te pomer, m\u00f4\u017eete odhadn\u00fa\u0165 \u00fa\u010dinnos\u0165 v r\u00e1mci u\u017eito\u010dn\u00e9ho rozsahu pre \u00fa\u010dely dimenzovania motora.<\/p>\n

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Pomer (jednochodov\u00fd z\u00e1vitovkov\u00fd prevod)<\/th>\nTypick\u00fd uhol n\u00e1behu<\/th>\nPribli\u017en\u00e1 \u00fa\u010dinnos\u0165 (mazan\u00e9 olejom, bronzov\u00e9 koleso)<\/th>\nSamosvorn\u00e9?<\/th>\n<\/tr>\n<\/thead>\n
5:1<\/td>\n~11\u00b0<\/td>\n88 \u2013 93%<\/td>\nNie \u2013 uhol n\u00e1behu presahuje uhol trenia<\/td>\n<\/tr>\n
10:1<\/td>\n~5,5\u00b0<\/td>\n82 \u2013 89%<\/td>\nMargin\u00e1lne \u2013 overte pri prev\u00e1dzkovej teplote<\/td>\n<\/tr>\n
20:1<\/td>\n~3,0\u00b0<\/td>\n76 \u2013 84%<\/td>\n\u00c1no \u2013 spo\u013eahliv\u00e9 s mazan\u00edm miner\u00e1lnym olejom<\/td>\n<\/tr>\n
30:1<\/td>\n~2,0\u00b0<\/td>\n72 \u2013 81%<\/td>\n\u00c1no \u2013 spo\u013eahliv\u00e9<\/td>\n<\/tr>\n
50:1<\/td>\n~1,2\u00b0<\/td>\n66 \u2013 76%<\/td>\n\u00c1no \u2013 spo\u013eahliv\u00e9<\/td>\n<\/tr>\n
80:1<\/td>\n~0,8\u00b0<\/td>\n60 \u2013 72%<\/td>\n\u00c1no \u2013 siln\u00e9 samosvorn\u00e9<\/td>\n<\/tr>\n
100:1<\/td>\n~0,6\u00b0<\/td>\n55 \u2013 68%<\/td>\n\u00c1no \u2013 ve\u013emi siln\u00fd, ale \u00fa\u010dinnos\u0165 je n\u00edzka<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
Pravidlo pre dimenzovanie motora:<\/strong> Pre pomery nad 20:1 pou\u017eite \u03b7 = 0,75 ako konzervat\u00edvny odhad dimenzovania motora, ak nie s\u00fa k dispoz\u00edcii konkr\u00e9tne \u00fadaje o \u00fa\u010dinnosti. To d\u00e1va T_motor = T_v\u00fdstup \u00f7 (i \u00d7 0,75). Ak motor vybran\u00fd s t\u00fdmto odhadom be\u017e\u00ed s menovit\u00fdm za\u0165a\u017een\u00edm men\u0161\u00edm ako 60% v prev\u00e1dzke, pohon je predimenzovan\u00fd \u2013 ale syst\u00e9m bude fungova\u0165. Pou\u017eitie \u03b7 = 1,0 (ignorovanie \u00fa\u010dinnosti) pri dimenzovan\u00ed motora je chyba, ktor\u00e1 sp\u00f4sobuje prehriatie a vypnutie motora v prev\u00e1dzke.<\/div>\n

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Viac\u0161tartov\u00e9 \u010dervy \u2013 kedy pou\u017ei\u0165 dva alebo tri \u0161tarty<\/h2>\n

Viacchodov\u00fd z\u00e1vitovkov\u00fd syst\u00e9m zvy\u0161uje uhol n\u00e1behu pri rovnakom pomere, \u010d\u00edm sa zlep\u0161uje \u00fa\u010dinnos\u0165 za cenu zn\u00ed\u017eenia (alebo elimin\u00e1cie) samosvornosti. Rozhodnutie medzi jednochodov\u00fdm a viacchodov\u00fdm syst\u00e9mom je prim\u00e1rne dan\u00e9 t\u00fdm, \u010di je samosvornos\u0165 potrebn\u00e1 a ak\u00e1 \u00fa\u010dinnos\u0165 je prijate\u013en\u00e1.<\/p>\n

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Cie\u013eov\u00fd pomer<\/th>\nPou\u017eitie z1 = 1 (jednorazov\u00fd \u0161tart)<\/th>\nPou\u017eitie z1 = 2 (dvojchodov\u00e9)<\/th>\nKedy uprednostni\u0165 dvoj\u0161tartov\u00fd re\u017eim<\/th>\n<\/tr>\n<\/thead>\n
20:1<\/td>\nz2 = 20, uhol n\u00e1behu ~3\u00b0, ~78% \u03b7<\/td>\nz2 = 40, uhol n\u00e1behu ~6\u00b0, ~86% \u03b7<\/td>\nKe\u010f nie je potrebn\u00e9 samosvorn\u00e9 uzamknutie a je d\u00f4le\u017eit\u00e1 \u00fa\u010dinnos\u0165; je kompatibiln\u00fd s v\u00e4\u010d\u0161\u00edm priemerom kolies<\/td>\n<\/tr>\n
10:1<\/td>\nz2 = 10, uhol predstihu ~5,5\u00b0, ~84% \u03b7<\/td>\nz2 = 20, ~11\u00b0 uhol predstihu, ~91% \u03b7<\/td>\nKe\u010f samosvorn\u00e9 brzdenie rozhodne nie je potrebn\u00e9; ke\u010f je strata \u00fa\u010dinnosti pri jednorazovom \u0161tarte 10:1 neprijate\u013en\u00e1<\/td>\n<\/tr>\n
5:1<\/td>\nz2 = 5, ~11\u00b0 uhol predstihu, ~90% \u03b7<\/td>\nz2 = 10, uhol n\u00e1behu ~22\u00b0, ~94% \u03b7<\/td>\nPomer 5:1 je pre z\u00e1vitovkov\u00e9 pohony nezvy\u010dajn\u00fd \u2013 ak je prijate\u013en\u00fd paraleln\u00fd hriade\u013e, zv\u00e1\u017ete \u0161pir\u00e1lov\u00e9 ozuben\u00e9 koleso.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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V\u00fdrobn\u00e1 kapacita<\/h2>\n\n\n\n\n
\"diel\u0148a<\/td>\n\"diel\u0148a<\/td>\n<\/tr>\n
\"diel\u0148a<\/td>\n\"diel\u0148a<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/p>\n

V\u00fdpo\u010det, \u010di sa v\u00e1\u0161 pomer samovo\u013ene uzamkne \u2013 kritick\u00e1 kontrola<\/h2>\n

Samosvornos\u0165 nie je zaru\u010den\u00e1 pre v\u0161etky prevodov\u00e9 pomery \u2013 mus\u00ed sa skontrolova\u0165 vzh\u013eadom na uhol trenia konkr\u00e9tnej kombin\u00e1cie materi\u00e1lu a maziva. Kontrola je jednoduch\u00e1:<\/p>\n

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Postup kontroly samosvornosti<\/p>\n

Krok 1:<\/strong> Ur\u010dte uhol st\u00fapania \u03bb = arctan(st\u00fapanie \u00f7 (\u03c0 \u00d7 d1)), kde st\u00fapanie = po\u010det z\u00e1vitov \u00d7 axi\u00e1lny rozstup a d1 = priemer rozstupu z\u00e1vitovky.<\/p>\n

Krok 2:<\/strong> Odhadnite koeficient trenia \u03bc pre va\u0161u kombin\u00e1ciu materi\u00e1lu a maziva:<\/p>\n

\u25c8 Kalen\u00e1 oce\u013eov\u00e1 z\u00e1vitovka + koleso z c\u00ednovo-bronzov\u00e9ho materi\u00e1lu + olej ISO VG 220 pri 20 \u00b0C: \u03bc \u2248 0,05\u20130,08<\/p>\n

\u25c8 Rovnak\u00e9 pri 75 \u00b0C (letn\u00e1 prev\u00e1dzkov\u00e1 teplota): \u03bc \u2248 0,04\u20130,06<\/p>\n

\u25c8 Such\u00fd (bez mazania): \u03bc \u2248 0,12\u20130,18 (ove\u013ea silnej\u0161ie samosvorn\u00e9 spojenie, ale ve\u013emi vysok\u00e9 opotrebenie)<\/p>\n

Krok 3:<\/strong> Vypo\u010d\u00edtajte uhol trenia \u03c1' = arctgan(\u03bc \u00f7 cos \u03b1), kde \u03b1 = uhol tlaku (\u0161tandard 20\u00b0).<\/p>\n

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

\u25c8 Ak je \u03bb men\u0161ie ako \u03c1' \u2192 samosvor: pohon sa za stanoven\u00fdch podmienok nepohne dozadu<\/p>\n

\u25c8 Ak je \u03bb v\u00e4\u010d\u0161ie ako \u03c1' \u2192 nie je samosvorn\u00e9: sp\u00e4tn\u00fd chod je mo\u017en\u00fd<\/p>\n

\u25c8 Ak je \u03bb do 1,5\u00b0 od \u03c1' \u2192 hrani\u010dn\u00e1 \u010diara: nespoliehajte sa na samosvorn\u00fd mechanizmus ako bezpe\u010dnostn\u00fd prvok<\/p>\n<\/div>\n

\n

Pracov\u00fd pr\u00edklad \u2013 Kontrola samosvornosti sol\u00e1rneho sledova\u010da pri teplote krytu 80 \u00b0C<\/p>\n

Dan\u00e9: Z\u00e1vitovka M6, jednochod\u00e1, d1 = 48 mm (\u0161tandardn\u00fd pomer), axi\u00e1lny rozstup = \u03c0 \u00d7 m = 18,85 mm, st\u00fapanie = 1 \u00d7 18,85 = 18,85 mm<\/p>\n

Uhol n\u00e1behu: \u03bb = arctan(18,85 \u00f7 (\u03c0 \u00d7 48)) = arctan(18,85 \u00f7 150,8) = arctan(0,125) = 7,1\u00b0<\/strong><\/p>\n

Koeficient trenia pri 80 \u00b0C so syntetick\u00fdm olejom PAO: \u03bc = 0,045<\/p>\n

Uhol trenia: \u03c1' = arctan(0,045 \u00f7 cos 20\u00b0) = arctan(0,045 \u00f7 0,940) = arctan(0,0479) = 2,7\u00b0<\/strong><\/p>\n

Porovnanie: \u03bb (7,1\u00b0) je v\u00e4\u010d\u0161ie ako \u03c1' (2,7\u00b0) \u2192 S t\u00fdmto mazivom sa pri 80 \u00b0C NESAMONISTKUJE<\/strong><\/p>\n

Z\u00e1ver: Tento z\u00e1vitovkov\u00fd hriade\u013e vy\u017eaduje men\u0161\u00ed priemer rozstupu (zv\u00e4\u010d\u0161i\u0165 uhol st\u00fapania by bolo nespr\u00e1vne \u2013 uhol st\u00fapania je u\u017e pr\u00edli\u0161 ve\u013ek\u00fd) alebo men\u0161\u00ed po\u010det \u0161tartov tu nie je rie\u0161en\u00edm. Rie\u0161enie je: zn\u00ed\u017ei\u0165 priemer rozstupu, aby sa zn\u00ed\u017eil uhol st\u00fapania. Pri d1 = 80 mm: \u03bb = arctan(18,85 \u00f7 251,3) = 4,3\u00b0 \u2192 st\u00e1le v\u00e4\u010d\u0161ie ako 2,7\u00b0 pri 80 \u00b0C. Pri d1 = 100 mm: \u03bb = 3,4\u00b0 \u2192 rezerva je iba 0,7\u00b0 \u2013 st\u00e1le riskantn\u00e9. Spr\u00e1vne rie\u0161enie: pou\u017ei\u0165 mazivo s vy\u0161\u0161ou viskozitou (\u03bc = 0,065 pri 80 \u00b0C s olejom ISO VG 460 \u2192 \u03c1' = 4,0\u00b0 \u2192 rezerva 0,6\u00b0 s d1 = 80 mm). Alebo pou\u017ei\u0165 v\u00e4\u010d\u0161\u00ed priemer rozstupu (d1 = 150 mm: \u03bb = 2,3\u00b0 \u2192 samosvorn\u00e9 s rezervou 0,4\u00b0 pri 80 \u00b0C). Tento praktick\u00fd pr\u00edklad ilustruje, pre\u010do sa samosvornos\u0165 sol\u00e1rneho sledova\u010da mus\u00ed overova\u0165 pri prev\u00e1dzkovej teplote, nie predpoklada\u0165.<\/p>\n<\/div>\n

<\/p>\n

P\u00e4\u0165 be\u017en\u00fdch ch\u00fdb pri v\u00fdpo\u010dte pomeru \u2013 s opravami<\/h2>\n
\n
\n

Chyba 1 \u2013 Po\u010d\u00edtanie ot\u00e1\u010dok z\u00e1vitu namiesto za\u010diatkov<\/p>\n

Z\u00e1vitovka s 5 vidite\u013en\u00fdmi z\u00e1vitmi (5 dr\u00e1\u017eok pozd\u013a\u017e d\u013a\u017eky hriade\u013ea) nie je 5-chodov\u00e1 z\u00e1vitovka \u2013 takmer ur\u010dite ide o jednochodov\u00fa z\u00e1vitovku s d\u013a\u017ekou 5 z\u00e1vitov. Po\u010d\u00edtajte po\u010diato\u010dn\u00e9 body na \u010delnej ploche z\u00e1vitovky, nie po\u010det z\u00e1vitov\u00fdch priechodov pozd\u013a\u017e d\u013a\u017eky. Jednochodov\u00e1 z\u00e1vitovka so 60 zubami kolesa d\u00e1va pomer 60:1. 5-chodov\u00e1 z\u00e1vitovka (5 po\u010diato\u010dn\u00fdch bodov na \u010delnej ploche) so 60 zubami kolesa d\u00e1va pomer 12:1 \u2013 chyba faktora 5.<\/p>\n<\/div>\n

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Chyba 2 \u2013 Zamenite\u013ene pou\u017eitie prevodov\u00e9ho pomeru a reduk\u010dn\u00e9ho pomeru bez znamienka<\/p>\n

Z\u00e1vitovkov\u00e1 prevodovka je reduk\u010dn\u00fd pohon \u2013 40:1 znamen\u00e1, \u017ee 40 vstupn\u00fdch ot\u00e1\u010dok vytvor\u00ed jednu v\u00fdstupn\u00fa ot\u00e1\u010dku. Motor v\u017edy poh\u00e1\u0148a z\u00e1vitovku; z\u00e1vitovka v\u017edy poh\u00e1\u0148a koleso. V \u0161tandardnej prev\u00e1dzke nie je smer ot\u00e1\u010dania jednozna\u010dn\u00fd. Pri diskusii o celkov\u00fdch prevodov\u00fdch pomeroch syst\u00e9mu v dokument\u00e1cii v\u0161ak v\u017edy v\u00fdslovne uv\u00e1dzajte \u201eredukcia 40:1\u201c alebo \u201ev\u00fdstupn\u00e1 r\u00fdchlos\u0165 = vstupn\u00e1 r\u00fdchlos\u0165 \u00f7 40\u201c, aby ste predi\u0161li chybe \u010ditate\u013ea, ktor\u00fd to bude pova\u017eova\u0165 za zosil\u0148ovac\u00ed pomer.<\/p>\n<\/div>\n

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Chyba 3 \u2013 Pou\u017eitie \u00fa\u010dinnosti \u03b7 = 1,0 pri v\u00fdpo\u010dte po\u017eadovan\u00e9ho kr\u00fatiaceho momentu motora<\/p>\n

Po\u017eadovan\u00fd vstupn\u00fd kr\u00fatiaci moment = po\u017eadovan\u00fd v\u00fdstupn\u00fd kr\u00fatiaci moment \u00f7 (pomer \u00d7 \u00fa\u010dinnos\u0165). Vynechanie \u00fa\u010dinnosti (pou\u017eit\u00edm \u03b7 = 1,0) podhodnot\u00ed po\u017eadovan\u00fd vstupn\u00fd kr\u00fatiaci moment o 15 \u2013 401 TP3T v z\u00e1vislosti od pomeru. Pri pomere 40:1 s \u03b7 = 0,78 je po\u017eadovan\u00fd vstupn\u00fd kr\u00fatiaci moment o 281 TP3T vy\u0161\u0161\u00ed ako odhad \u03b7 = 1,0. Motor vybran\u00fd na z\u00e1klade \u03b7 = 1,0 bude poddimenzovan\u00fd, bude be\u017ea\u0165 nad menovit\u00fdm kr\u00fatiacim momentom, vypne sa na nadpr\u00fadovej ochrane alebo zlyh\u00e1 v d\u00f4sledku tepeln\u00e9ho pre\u0165a\u017eenia v priebehu nieko\u013ek\u00fdch mesiacov.<\/p>\n<\/div>\n

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Chyba 4 \u2013 Predpoklad samosvornosti pre ak\u00fdko\u013evek prevodov\u00fd pomer bez kontroly pri prev\u00e1dzkovej teplote<\/p>\n

Ako je zn\u00e1zornen\u00e9 vo vy\u0161\u0161ie uvedenom pr\u00edklade, samosvornos\u0165 z\u00e1vis\u00ed od uhla n\u00e1behu vzh\u013eadom na uhol trenia pri prev\u00e1dzkovej teplote so \u0161pecifikovan\u00fdm mazivom. Pohon, ktor\u00fd sa samosvor\u00ed pri 20 \u00b0C s miner\u00e1lnym olejom, sa nemus\u00ed samosvori\u0165 pri 75 \u00b0C so syntetick\u00fdm olejom na sol\u00e1rnom sledova\u010di. V\u017edy overte pri maxim\u00e1lnej prev\u00e1dzkovej teplote so \u0161pecifikovan\u00fdm mazivom \u2013 nie pri katal\u00f3gov\u00fdch okolit\u00fdch podmienkach s generick\u00fdm koeficientom trenia.<\/p>\n<\/div>\n

\n

Chyba 5 \u2013 Zadanie necelo\u010d\u00edseln\u00e9ho pomeru, ktor\u00fd vy\u017eaduje ne\u0161tandardn\u00fd po\u010det zubov<\/p>\n

Ke\u010f\u017ee i = z2 \u00f7 z1 a z1 je cel\u00e9 \u010d\u00edslo (1, 2, 3\u2026), prevodov\u00fd pomer i mus\u00ed by\u0165 celo\u010d\u00edseln\u00fdm n\u00e1sobkom z1 delen\u00fdm \u013eubovo\u013en\u00fdm cel\u00fdm \u010d\u00edslom z2. Pomer 33,3:1 nie je mo\u017en\u00e9 dosiahnu\u0165 s jednochod\u00fdm z\u00e1vitovkov\u00fdm prevodom (potrebovalo by sa z2 = 33,3, \u010do nie je cel\u00e9 \u010d\u00edslo). D\u00e1 sa dosiahnu\u0165 s trojchod\u00fdm z\u00e1vitovkov\u00fdm prevodom a z2 = 100 (100 \u00f7 3 = 33,3:1) \u2013 toto v\u0161ak nie je samosvorn\u00e9 a vy\u017eaduje si ne\u0161tandardn\u00fd po\u010det zubov. Pri necelo\u010d\u00edseln\u00fdch cie\u013eov\u00fdch pomeroch v\u017edy skontrolujte, \u010di je viacstup\u0148ov\u00e9 usporiadanie so \u0161tandardn\u00fdm po\u010dtom zubov praktickej\u0161ie ako jednostup\u0148ov\u00e9 ne\u0161tandardn\u00e9 prevedenie.<\/p>\n<\/div>\n<\/div>\n

<\/p>\n

\"aplik\u00e1cia<\/div>\n

<\/p>\n

Stru\u010dn\u00fd preh\u013ead \u0161tandardn\u00fdch pomerov \u2013 Preferovan\u00e9 kombin\u00e1cie po\u010dtu zubov<\/h2>\n

\u0160tandardn\u00e9 prevodov\u00e9 pomery zodpovedaj\u00fa kombin\u00e1ci\u00e1m po\u010dtu zubov, ktor\u00e9 zabra\u0148uj\u00fa zlej geometrii zubov (pr\u00edli\u0161 m\u00e1lo zubov kolesa sp\u00f4sobuj\u00face podrezanie alebo ve\u013emi vysok\u00fd po\u010det zubov kolesa vy\u017eaduj\u00faci ve\u013ek\u00e9 a drah\u00e9 koles\u00e1). V tabu\u013eke ni\u017e\u0161ie s\u00fa uveden\u00e9 naj\u010dastej\u0161ie \u0161pecifikovan\u00e9 prevodov\u00e9 pomery vo v\u00fdrobnom rade spolo\u010dnosti Korea Ever-Power:<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Pomer<\/th>\nz1 (za\u010d\u00edna)<\/th>\nz2 (zuby kolesa)<\/th>\nSamosvorn\u00e9<\/th>\nTypick\u00e1 aplik\u00e1cia<\/th>\n<\/tr>\n<\/thead>\n
7.5:1<\/td>\n2<\/td>\n15<\/td>\nNie<\/td>\nVysoko\u00fa\u010dinn\u00fd z\u00e1vitovkov\u00fd stupe\u0148 s n\u00edzkym prevodov\u00fdm pomerom<\/td>\n<\/tr>\n
10:1<\/td>\n1<\/td>\n10<\/td>\nMargin\u00e1lne<\/td>\n\u013dahk\u00fd aktu\u00e1tor, overte po\u017eiadavku na samosvornos\u0165<\/td>\n<\/tr>\n
15:1<\/td>\n1<\/td>\n15<\/td>\n\u00c1no (hrani\u010dn\u00e9)<\/td>\nBaliaci stroj, rohov\u00fd pohon dopravn\u00edka<\/td>\n<\/tr>\n
20:1<\/td>\n1<\/td>\n20<\/td>\n\u00c1no<\/td>\nPohon po\u013enohospod\u00e1rskych strojov, v\u0161eobecn\u00fd priemysel<\/td>\n<\/tr>\n
30:1<\/td>\n1<\/td>\n30<\/td>\n\u00c1no<\/td>\nRu\u010dn\u00e9 zdv\u00edhanie, nastavenie riadku pres\u00e1dza\u010da<\/td>\n<\/tr>\n
40:1<\/td>\n1<\/td>\n40<\/td>\n\u00c1no<\/td>\nCNC 4-osov\u00fd st\u00f4l, priemyseln\u00fd dopravn\u00edk<\/td>\n<\/tr>\n
60:1<\/td>\n1<\/td>\n60<\/td>\n\u00c1no<\/td>\nSol\u00e1rny sledova\u010d s jednou osou, presn\u00e9 polohovanie<\/td>\n<\/tr>\n
80:1<\/td>\n1<\/td>\n80<\/td>\n\u00c1no<\/td>\nSol\u00e1rny sledova\u010d, lek\u00e1rske polohovanie<\/td>\n<\/tr>\n
100:1<\/td>\n1<\/td>\n100<\/td>\n\u00c1no<\/td>\nPomaly r\u00fdchlostn\u00e9 \u0165a\u017ek\u00e9 stroje, pohony ventilov<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Spolo\u010dnos\u0165 Korea Ever-Power vyr\u00e1ba v\u0161etky prevodov\u00e9 pomery v tejto tabu\u013eke ako \u0161tandardn\u00e9 katal\u00f3gov\u00e9 polo\u017eky v rozsahu modulov M1 a\u017e M12. Akceptujeme aj ne\u0161tandardn\u00e9 prevodov\u00e9 pomery vy\u017eaduj\u00face vlastn\u00fd po\u010det zubov. kontaktujte n\u00e1s<\/a> s po\u017eiadavkou na \u0161pecifick\u00fd po\u010det zubov a my potvrd\u00edme, \u010di je potrebn\u00e9 obstara\u0165 \u0161peci\u00e1lnu odva\u013eovaciu fr\u00e9zu. Pre kompletn\u00e9 uzavret\u00e9 pohonn\u00e9 jednotky pri ktoromko\u013evek z t\u00fdchto \u0161tandardn\u00fdch prevodov\u00fdch pomerov, z\u00e1vitovkov\u00e9 reduktory<\/a> s\u00fa dostupn\u00e9 ako utesnen\u00e9 jednotky pripraven\u00e9 na mont\u00e1\u017e.<\/p>\n

\"v\u00fdrobok<\/p>\n

\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n
\nPozn\u00e1m po\u017eadovan\u00e9 v\u00fdstupn\u00e9 ot\u00e1\u010dky a ot\u00e1\u010dky motora. Je pomer = ot\u00e1\u010dky motora \u00f7 v\u00fdstupn\u00e9 ot\u00e1\u010dky v\u017edy spr\u00e1vny pre z\u00e1vitovkov\u00fd pohon?<\/summary>\n
\u00c1no, pri \u0161tandardnej prev\u00e1dzke z\u00e1vitovkov\u00e9ho pohonu, kde je z\u00e1vitovka hnac\u00edm prvkom a koleso je poh\u00e1\u0148an\u00fdm prvkom. Reduk\u010dn\u00fd pomer i = vstupn\u00e9 (z\u00e1vitovkov\u00e9) ot\u00e1\u010dky \u00f7 v\u00fdstupn\u00e9 (kolesov\u00e9) ot\u00e1\u010dky. To d\u00e1va po\u017eadovan\u00fa hodnotu z2 \u00f7 z1. Zaokr\u00fahlite na najbli\u017e\u0161iu celo\u010d\u00edseln\u00fa kombin\u00e1ciu \u2013 napr\u00edklad po\u017eadovan\u00fd pomer 38,5:1 sa d\u00e1 dosiahnu\u0165 ako z2 = 77, z1 = 2 (dvojchodov\u00e1 z\u00e1vitovka, 77-zubov\u00e9 koleso, presn\u00fdch 38,5:1) alebo pribli\u017ene ako z2 = 39, z1 = 1 (39:1, \u010do d\u00e1va v\u00fdstupn\u00fa r\u00fdchlos\u0165 o 2,51 TP3T ni\u017e\u0161iu ako cie\u013eov\u00e1 \u2013 prijate\u013en\u00e1 pre v\u00e4\u010d\u0161inu aplik\u00e1ci\u00ed). Spr\u00e1vna vo\u013eba z\u00e1vis\u00ed od toho, \u010di je presn\u00fd pomer kritick\u00fd pre \u00fa\u010dely indexovania alebo \u010dasovania.<\/div>\n<\/details>\n
\nAko ur\u010d\u00edm v\u00fdstupn\u00fd kr\u00fatiaci moment zo z\u00e1vitovkov\u00e9ho pohonu, ak pozn\u00e1m iba menovit\u00fd kr\u00fatiaci moment motora?<\/summary>\n
V\u00fdstupn\u00fd kr\u00fatiaci moment = menovit\u00fd kr\u00fatiaci moment motora \u00d7 prevodov\u00fd pomer \u00d7 \u00fa\u010dinnos\u0165. Napr\u00edklad: menovit\u00fd kr\u00fatiaci moment motora 2,8 Nm, prevodov\u00fd pomer 40:1, \u00fa\u010dinnos\u0165 0,78: v\u00fdstupn\u00fd kr\u00fatiaci moment = 2,8 \u00d7 40 \u00d7 0,78 = 87,4 Nm. Toto je trval\u00fd v\u00fdstupn\u00fd kr\u00fatiaci moment dostupn\u00fd pri menovitom za\u0165a\u017een\u00ed motora. Pre \u0161pi\u010dkov\u00fd kr\u00fatiaci moment dostupn\u00fd pri zastaven\u00ed motora (zablokovan\u00fd rotor) pou\u017eite v rovnakom vzorci kr\u00fatiaci moment pri zastaven\u00ed motora (zvy\u010dajne 2,5 \u2013 3,5 \u00d7 menovit\u00fd kr\u00fatiaci moment) \u2013 \u0161pi\u010dkov\u00fd kr\u00fatiaci moment je v\u0161ak obmedzen\u00fd na kr\u00e1tke intervaly a nemal by sa pou\u017e\u00edva\u0165 na v\u00fdpo\u010dty trval\u00e9ho za\u0165a\u017eenia. V \u00fadajovom liste motora by sa mal uv\u00e1dza\u0165 menovit\u00fd kr\u00fatiaci moment aj kr\u00fatiaci moment pri zastaven\u00ed ako samostatn\u00e9 \u0161pecifik\u00e1cie.<\/div>\n<\/details>\n
\nM\u00f4\u017eem dosiahnu\u0165 \u013eubovo\u013en\u00fd prevodov\u00fd pomer so z\u00e1vitovkov\u00fdm prevodom, alebo existuj\u00fa \u0161tandardn\u00e9 prevodov\u00e9 pomery, ktor\u00e9 by som mal pou\u017e\u00edva\u0165?<\/summary>\n
V princ\u00edpe mo\u017eno dosiahnu\u0165 ak\u00fdko\u013evek celo\u010d\u00edseln\u00fd n\u00e1sobok po\u010dtu z\u00e1vitoviek zadan\u00edm zodpovedaj\u00faceho po\u010dtu zubov kolesa. V praxi existuj\u00fa minim\u00e1lne a maxim\u00e1lne praktick\u00e9 po\u010dty zubov. Minim\u00e1lny po\u010det zubov kolesa, aby sa zabr\u00e1nilo podrezaniu, je pribli\u017ene 17 \u2013 20 zubov (pod t\u00fdmto po\u010dtom sa kore\u0148 zuba kolesa odre\u017ee procesom odvalovania). Maxim\u00e1lny praktick\u00fd po\u010det zubov predt\u00fdm, ako sa koleso stane extr\u00e9mne ve\u013ek\u00fdm a drah\u00fdm, je pre v\u00e4\u010d\u0161inu aplik\u00e1ci\u00ed pribli\u017ene 100 \u2013 120 zubov. To poskytuje praktick\u00fd rozsah prevodov\u00fdch pomerov jednochod\u00fdch z\u00e1vitoviek pribli\u017ene 17:1 a\u017e 120:1. Pre prevody mimo tohto rozsahu sa pou\u017e\u00edvaj\u00fa dvojstup\u0148ov\u00e9 usporiadania alebo viacchod\u00e9 z\u00e1vitovky. Z\u00e1kazkov\u00e9 prevodov\u00e9 pomery (napr. presne 47:1) s\u00fa vyrobite\u013en\u00e9 \u2013 47-zubov\u00e9 jednochod\u00e9 koleso nie je \u0161tandardnou polo\u017ekou, ale je vyrobite\u013en\u00e9 so \u0161tandardn\u00fdmi n\u00e1strojmi v be\u017enom dodacom \u010dase.<\/div>\n<\/details>\n
\nAko prevodov\u00fd pomer ovplyv\u0148uje uhlov\u00fa v\u00f4\u013eu z\u00e1vitovkov\u00e9ho prevodu?<\/summary>\n
V\u00f4\u013ea v z\u00e1vitovkovom prevode sa typicky \u0161pecifikuje ako line\u00e1rny rozmer na rozstupnej kru\u017enici z\u00e1vitovkov\u00e9ho kolesa (v milimetroch). Prevod na uhlov\u00fa v\u00f4\u013eu na v\u00fdstupnom hriadeli: uhlov\u00e1 v\u00f4\u013ea (radi\u00e1ny) = line\u00e1rna v\u00f4\u013ea (mm) \u00f7 polomer rozstupnej kru\u017enice (mm). Preve\u010fte na obl\u00fakov\u00e9 min\u00faty vyn\u00e1soben\u00edm radi\u00e1nov \u010d\u00edslom 3438. Pre 60-zubov\u00e9 koleso M4 (polomer rozstupnej kru\u017enice = 120 mm) s v\u00f4\u013eou 0,08 mm: uhlov\u00e1 v\u00f4\u013ea = 0,08 \u00f7 120 = 0,000667 radi\u00e1nov = 2,3 obl\u00fakov\u00fdch min\u00fat. Vy\u0161\u0161ie prevodov\u00e9 pomery (viac zubov kolesa, v\u00e4\u010d\u0161ia rozstupn\u00e1 kru\u017enica) znamenaj\u00fa, \u017ee rovnak\u00e1 line\u00e1rna v\u00f4\u013ea sa premieta do men\u0161ej uhlovej chyby na v\u00fdstupe \u2013 \u010do je jeden z d\u00f4vodov, pre\u010do z\u00e1vitovkov\u00e9 pohony s vysok\u00fdmi prevodov\u00fdmi pomermi dok\u00e1\u017eu dosiahnu\u0165 pou\u017eite\u013en\u00fa presnos\u0165 polohovania aj pri stredn\u00fdch hodnot\u00e1ch line\u00e1rnej v\u00f4le.<\/div>\n<\/details>\n
\nM\u00f4j po\u017eadovan\u00fd pomer je 66,7:1 \u2013 ako ho presne ur\u010d\u00edm?<\/summary>\n
66,7:1 = presne 200:3. To vy\u017eaduje z1 = 3 \u0161tarty na z\u00e1vitovke a z2 = 200 zubov na kolese. Koleso s 200 zubami na akomko\u013evek praktickom module bude ve\u013emi ve\u013ek\u00e9 a drah\u00e9. Praktickej\u0161\u00ed pr\u00edstup: op\u00fdtajte sa, \u010di je 66,7:1 skuto\u010dne potrebn\u00e9. Pre v\u00e4\u010d\u0161inu aplik\u00e1ci\u00ed riadenia polohy by 65:1 (z1=1, z2=65) alebo 67:1 (z1=1, z2=67) poskytlo v\u00fdstupn\u00fa r\u00fdchlos\u0165 v rozmedz\u00ed 2,6% od cie\u013eovej hodnoty \u2013 zvy\u010dajne prijate\u013en\u00fa pri polohovan\u00ed s otvorenou slu\u010dkou \u00fapravou po\u010dtu krokov motora. Ak je potrebn\u00fd presn\u00fd pomer (napr\u00edklad na dosiahnutie presn\u00e9ho vz\u0165ahu medzi impulzmi sn\u00edma\u010da polohy motora a v\u00fdstupn\u00fdm uhlom), kontaktujte n\u00e1s a preberte dvojstup\u0148ov\u00fa mo\u017enos\u0165: prv\u00fd stupe\u0148 s pomerom 6,67:1 a druh\u00fd stupe\u0148 s pomerom 10:1, obe dosiahnute\u013en\u00e9 so \u0161tandardn\u00fdm po\u010dtom zubov a kompaktn\u00fdm stohovan\u00fdm usporiadan\u00edm.<\/div>\n<\/details>\n
\nKe\u010f sa pozriem na z\u00e1vitovkov\u00fd hriade\u013e, na jeho povrchu napo\u010d\u00edtam 8 z\u00e1vitov. Znamen\u00e1 to, \u017ee ide o 8-chodov\u00fd z\u00e1vitovn\u00edk?<\/summary>\n
Takmer ur\u010dite nie. Po\u010d\u00edtate po\u010det z\u00e1vitov \u2013 po\u010det ot\u00e1\u010dok z\u00e1vitu \u2013 po\u010det ot\u00e1\u010dok, ktor\u00e9 sa z\u00e1vit ov\u00edja okolo valca pozd\u013a\u017e d\u013a\u017eky z\u00e1vitovky. Z\u00e1vitovka s jedn\u00fdm chodom a 8 z\u00e1vitmi je st\u00e1le z1 = 1. Spr\u00e1vny sp\u00f4sob, ako ur\u010di\u0165 po\u010det z\u00e1vitov, je pozrie\u0165 sa na \u010deln\u00fa plochu hriade\u013ea z\u00e1vitovky (ploch\u00e1 plocha na oboch koncoch) a spo\u010d\u00edta\u0165 po\u010det vidite\u013en\u00fdch bodov za\u010diatku z\u00e1vitu \u2013 ka\u017ed\u00fd z nich je samostatn\u00fd za\u010diatok. Jedna dr\u00e1\u017eka vidite\u013en\u00e1 na \u010delnej ploche = jednoduch\u00fd chod. Dve dr\u00e1\u017eky rozmiestnen\u00e9 o 180\u00b0 = dva chody. Po\u010det z\u00e1vitov z\u00e1vitu pozd\u013a\u017e d\u013a\u017eky hriade\u013ea s\u00favis\u00ed s d\u013a\u017ekou z\u00e1vitovky a uhlom st\u00fapania, nie s po\u010dtom z\u00e1vitov, ktor\u00fd ur\u010duje prevodov\u00fd pomer.<\/div>\n<\/details>\n
\nAk\u00e9 inform\u00e1cie by som mal poskytn\u00fa\u0165 spolo\u010dnosti Korea Ever-Power, aby som z\u00edskal spr\u00e1vnu cenov\u00fa ponuku na z\u00e1vitovkov\u00fd prevod?<\/summary>\n
Minim\u00e1lne inform\u00e1cie pre cenov\u00fa ponuku: (1) po\u017eadovan\u00fd prevodov\u00fd pomer; (2) vstupn\u00e9 ot\u00e1\u010dky z\u00e1vitovkov\u00e9ho hriade\u013ea v ot.\/min; (3) po\u017eadovan\u00fd v\u00fdstupn\u00fd kr\u00fatiaci moment v Nm (alebo v\u00fdstupn\u00fd v\u00fdkon v kW a v\u00fdstupn\u00e9 ot\u00e1\u010dky v ot.\/min \u2013 z t\u00fdchto inform\u00e1ci\u00ed vieme odvodi\u0165 kr\u00fatiaci moment); (4) \u010di je potrebn\u00e9 samosvorn\u00e9 ulo\u017eenie; (5) usporiadanie hriade\u013ea (\u0161tandardn\u00e9 pravouhl\u00e9 alebo in\u00e9); (6) priemer otvoru pre koleso a \u010di je potrebn\u00e1 dr\u00e1\u017eka pre pero; (7) prev\u00e1dzkov\u00e9 prostredie (vn\u00fatorn\u00e9, vonkaj\u0161ie, pobre\u017en\u00e9, chemick\u00fd kontakt) pre v\u00fdber materi\u00e1lu. S t\u00fdmito siedmimi parametrami vieme poskytn\u00fa\u0165 odpor\u00fa\u010danie modulu, \u0161pecifik\u00e1ciu materi\u00e1lu, triedu presnosti a potvrden\u00fa cenu do jedn\u00e9ho pracovn\u00e9ho d\u0148a. Ch\u00fdbaj\u00faca ktor\u00e1ko\u013evek z prv\u00fdch troch polo\u017eiek znamen\u00e1, \u017ee sa op\u00fdtame pred cenovou ponukou \u2013 odoslanie v\u0161etk\u00fdch siedmich polo\u017eiek vopred u\u0161etr\u00ed cestu tam a sp\u00e4\u0165.<\/div>\n<\/details>\n

<\/p>\n

\n

Nechajte si overi\u0165 v\u00fdpo\u010det pomeru \u2013 potom si vy\u017eiadajte cenov\u00fa ponuku<\/h2>\n

Po\u0161lite n\u00e1m po\u017eadovan\u00fd prevodov\u00fd pomer, v\u00fdstupn\u00fd kr\u00fatiaci moment, vstupn\u00e9 ot\u00e1\u010dky a \u010di je potrebn\u00e9 samosvorn\u00e9 uzamknutie. N\u00e1\u0161 technick\u00fd t\u00edm potvrd\u00ed spr\u00e1vnu kombin\u00e1ciu z1\/z2, odhad \u00fa\u010dinnosti a d\u00f4sledky pre dimenzovanie motora \u2013 a potom do jedn\u00e9ho pracovn\u00e9ho d\u0148a poskytne \u0161pecifik\u00e1ciu a cenu.<\/p>\n

Odo\u0161lite svoj pomer na overenie<\/a>
\nPrehliada\u0165 produkty so z\u00e1vitovkov\u00fdmi prevodmi<\/a><\/div>\n<\/div>\n<\/div>\n

Redaktor: Cxm<\/p>\n<\/div>\n

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

  Ako vypo\u010d\u00edta\u0165 prevodov\u00fd pomer z\u00e1vitovkov\u00e9ho prevodu \u2013 In\u017einierska pr\u00edru\u010dka s praktick\u00fdmi pr\u00edkladmi Nespr\u00e1vny prevodov\u00fd pomer v \u0161pecifik\u00e1cii z\u00e1vitovkov\u00e9ho prevodu znamen\u00e1 viac pe\u0148az\u00ed ako samotn\u00e1 s\u00fakolesov\u00e1 s\u00faprava \u2013 nespr\u00e1vna v\u00fdstupn\u00e1 r\u00fdchlos\u0165 znamen\u00e1 nespr\u00e1vny v\u00fdber motora, nespr\u00e1vny kr\u00fatiaci moment znamen\u00e1 poddimenzovan\u00e9 komponenty a nespr\u00e1vny predpoklad samosvornosti znamen\u00e1 dodato\u010dn\u00fa mont\u00e1\u017e brzdy. T\u00e1to pr\u00edru\u010dka v\u00e1s prevedie [\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\/sk\/wp-json\/wp\/v2\/posts\/1820","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wormwheelgear.top\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wormwheelgear.top\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wormwheelgear.top\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wormwheelgear.top\/sk\/wp-json\/wp\/v2\/comments?post=1820"}],"version-history":[{"count":4,"href":"https:\/\/wormwheelgear.top\/sk\/wp-json\/wp\/v2\/posts\/1820\/revisions"}],"predecessor-version":[{"id":1825,"href":"https:\/\/wormwheelgear.top\/sk\/wp-json\/wp\/v2\/posts\/1820\/revisions\/1825"}],"wp:attachment":[{"href":"https:\/\/wormwheelgear.top\/sk\/wp-json\/wp\/v2\/media?parent=1820"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wormwheelgear.top\/sk\/wp-json\/wp\/v2\/categories?post=1820"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wormwheelgear.top\/sk\/wp-json\/wp\/v2\/tags?post=1820"}],"curies":[{"name":"pracovn\u00fd list","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}