{"id":1357,"date":"2026-06-26T06:10:18","date_gmt":"2026-06-26T06:10:18","guid":{"rendered":"https:\/\/worm-and-worm-wheel.com\/?p=1357"},"modified":"2026-06-26T06:11:32","modified_gmt":"2026-06-26T06:11:32","slug":"worm-and-worm-wheel-for-cnc-rotary-table-indexing","status":"publish","type":"post","link":"https:\/\/worm-and-worm-wheel.com\/cs\/worm-and-worm-wheel-for-cnc-rotary-table-indexing\/","title":{"rendered":"\u0160nek a \u0161nekov\u00e9 kolo pro CNC indexov\u00e1n\u00ed oto\u010dn\u00e9ho stolu"},"content":{"rendered":"
\n

<\/p>\n

\n

Korea Ever-Power \u00b7 Pr\u016fvodce aplika\u010dn\u00edm in\u017een\u00fdrstv\u00edm<\/p>\n

\u0160nek a \u0161nekov\u00e9 kolo pro CNC indexov\u00e1n\u00ed oto\u010dn\u00e9ho stolu<\/h1>\n

P\u011btios\u00e9 CNC obr\u00e1b\u011bc\u00ed centrum \u0159e\u017ee lopatku turb\u00edny p\u0159i ot\u00e1\u010dk\u00e1ch v\u0159etena 12 000 ot.\/min. Oto\u010dn\u00fd st\u016fl ve 4. ose polohuje polotovar lopatky s p\u0159esnost\u00ed na 10 \u00fahlov\u00fdch sekund \u2013 0,003 stupn\u011b \u2013 a dr\u017e\u00ed jej proti \u0159ezn\u00e9 s\u00edle 800 N, zat\u00edmco chladic\u00ed kapalina zaplavuje pracovn\u00ed z\u00f3nu rychlost\u00ed 20 litr\u016f za minutu. \u0160nekov\u00fd p\u0159evod uvnit\u0159 oto\u010dn\u00e9ho stolu slou\u017e\u00ed sou\u010dasn\u011b jako p\u0159esn\u00fd \u00fahlov\u00fd polohova\u010d, up\u00ednac\u00ed prvek obrobku a mechanick\u00e1 sou\u010d\u00e1st odoln\u00e1 v\u016f\u010di chladic\u00ed kapalin\u011b. Jedn\u00e1 se o aplikaci \u0161nekov\u00e9ho p\u0159evodu s nejvy\u0161\u0161\u00edmi n\u00e1roky na p\u0159esnost v jak\u00e9mkoli odv\u011btv\u00ed.<\/p>\n

Promluvte si s technikem pohonu obr\u00e1b\u011bc\u00edch stroj\u016f \u2192<\/a><\/p>\n<\/div>\n

<\/p>\n

\n
Rychl\u00e1 odpov\u011b\u010f<\/div>\n

CNC oto\u010dn\u00e9 stoly (4. a 5. osa) pou\u017e\u00edvaj\u00ed \u0161nekov\u00e9 p\u0159evody pro p\u0159esn\u00e9 \u00fahlov\u00e9 polohov\u00e1n\u00ed, plynul\u00e9 kop\u00edrov\u00e1n\u00ed tvar\u016f b\u011bhem simult\u00e1nn\u00edho v\u00edceos\u00e9ho obr\u00e1b\u011bn\u00ed a samosvorn\u00e9 up\u00edn\u00e1n\u00ed obrobku proti \u0159ezn\u00fdm sil\u00e1m. Tabulka v\u016fle v\u016f\u010di chyb\u011b polohy kvantifikuje, jak se v\u016fle \u0161nekov\u00e9ho p\u0159evodu prom\u00edt\u00e1 do chyby obr\u00e1b\u011bn\u00ed v bod\u011b \u0159ezu obrobku: e = R \u00d7 B \/ 3 438, kde R je polom\u011br obrobku v mm a B je v\u016fle v \u00fahlov\u00fdch minut\u00e1ch. U obrobku s polom\u011brem 200 mm zp\u016fsob\u00ed 1 \u00fahlov\u00e1 minuta v\u016fle odchylku polohy 58 \u00b5m \u2013 co\u017e p\u0159ekra\u010duje typickou toleranci CNC plus m\u00ednus 25 \u00b5m. Proto \u0161nekov\u00e9 p\u0159evody s CNC oto\u010dn\u00fdmi stoly univerz\u00e1ln\u011b pou\u017e\u00edvaj\u00ed p\u0159edpjat\u00e9 mechanismy proti v\u016fli (pru\u017einov\u00e9 d\u011blen\u00e9 kolo nebo duplexn\u00ed kolo s nastaven\u00edm podlo\u017eek), aby se efektivn\u00ed v\u016fle sn\u00ed\u017eila pod 10 \u00fahlov\u00fdch sekund. Standardem CNC je pom\u011br 360:1 \u2013 jeden stupe\u0148 na ot\u00e1\u010dku \u0161neku \u2013 co\u017e umo\u017e\u0148uje p\u0159\u00edm\u00e9 ode\u010d\u00edt\u00e1n\u00ed \u00fahlu ze servokoda\u010de bez dal\u0161\u00edho elektronick\u00e9ho p\u0159evodu. Pro CNC oto\u010dn\u00e9 stoly v\u00fdrobn\u00ed t\u0159\u00eddy je specifikov\u00e1na t\u0159\u00edda p\u0159esnosti 3 a\u017e 5 dle DIN 3974.<\/p>\n<\/div>\n

<\/p>\n

Pro\u010d CNC oto\u010dn\u00e9 stoly pou\u017e\u00edvaj\u00ed \u0161nekov\u00e9 p\u0159evody<\/h2>\n

\"Princip<\/p>\n

CNC oto\u010dn\u00fd st\u016fl pln\u00ed t\u0159i funkce sou\u010dasn\u011b: polohuje obrobek v p\u0159esn\u00e9m \u00fahlu, pevn\u011b dr\u017e\u00ed obrobek b\u011bhem \u0159ez\u00e1n\u00ed a plynule se ot\u00e1\u010d\u00ed b\u011bhem konturovac\u00edch operac\u00ed (obr\u00e1b\u011bn\u00ed ozuben\u00fdch kol, fr\u00e9zov\u00e1n\u00ed va\u010dkou, obr\u00e1b\u011bn\u00ed lopatek). \u0160nekov\u00fd p\u0159evod zaji\u0161\u0165uje v\u0161echny t\u0159i funkce v jednom mechanick\u00e9m stupni \u2013 \u017e\u00e1dn\u00fd jin\u00fd typ p\u0159evodu se t\u00e9to kombinaci nevyrovn\u00e1.<\/p>\n

\n
\n
P\u0159esn\u00e9 \u00fahlov\u00e9 polohov\u00e1n\u00ed<\/div>\n

P\u0159evod 360:1 p\u0159ev\u00e1d\u00ed jednu plnou ot\u00e1\u010dku \u0161neku na p\u0159esn\u011b jeden stupe\u0148 oto\u010den\u00ed stolu. Servomotor s 10 000 enkod\u00e9rem poskytuje 10 000 \u00d7 360 = 3 600 000 cykl\u016f na ot\u00e1\u010dku stolu \u2013 \u00fahlov\u00e9 rozli\u0161en\u00ed 0,36 \u00fahlov\u00fdch sekund na cykl. Mechanick\u00e1 p\u0159esnost plus m\u00ednus 10 \u00fahlov\u00fdch sekund je dosa\u017eiteln\u00e1 s p\u00e1ry \u0161nekov\u00fdch kol t\u0159\u00eddy 3 dle DIN.<\/p>\n<\/div>\n

\n
Samosvorn\u00fd up\u00edna\u010d obrobku<\/div>\n

B\u011bhem fr\u00e9zov\u00e1n\u00ed se \u0159ezn\u00e1 s\u00edla sna\u017e\u00ed oto\u010dit obrobek sm\u011brem od indexovan\u00e9 polohy. Samosvorn\u00fd mechanismus t\u00e9to s\u00edle odol\u00e1v\u00e1 bez samostatn\u00e9ho hydraulick\u00e9ho upnut\u00ed \u2013 \u0159ezn\u00e1 s\u00edla na polom\u011bru obrobku vytv\u00e1\u0159\u00ed zp\u011btn\u00fd hnac\u00ed moment, kter\u00fd \u0161nekov\u00e9 kolo absorbuje d\u00edky sv\u00e9 nevratnosti.<\/p>\n<\/div>\n

\n
Kontinu\u00e1ln\u00ed konturov\u00e1n\u00ed<\/div>\n

P\u0159i simult\u00e1nn\u00edm obr\u00e1b\u011bn\u00ed na 4. ose se st\u016fl ot\u00e1\u010d\u00ed plynule, zat\u00edmco v\u0159eteno se pohybuje v os\u00e1ch X\/Y\/Z \u2013 v\u0161echny osy jsou synchronizov\u00e1ny s CNC \u0159\u00eddic\u00ed jednotkou. \u0160nekov\u00fd p\u0159evod mus\u00ed zaji\u0161\u0165ovat plynul\u00e9 ot\u00e1\u010den\u00ed bez v\u016fle p\u0159i prom\u011bnn\u00fdch ot\u00e1\u010dk\u00e1ch od 0,1 do 30 ot.\/min bez chyby p\u0159enosu, kter\u00e1 by mohla zp\u016fsobit vady povrchu obrobku.<\/p>\n<\/div>\n<\/div>\n

<\/p>\n

Tabulka chyb v\u016fle v\u016f\u010di poloze \u2013 od \u00fahlov\u00fdch minut po mikrony v bod\u011b \u0159ezu<\/h2>\n

Vztah mezi v\u016fl\u00ed \u0161nekov\u00e9ho kola a chybou obr\u00e1b\u011bn\u00ed je \u010dist\u011b geometrick\u00fd: \u00fahlov\u00e1 v\u016fle ve st\u0159edu stolu vytv\u00e1\u0159\u00ed line\u00e1rn\u00ed chybu polohy na polom\u011bru obrobku, kter\u00e1 se \u00fam\u011brn\u011b zvy\u0161uje se vzd\u00e1lenost\u00ed od st\u0159edu ot\u00e1\u010den\u00ed. Vzorec je e = R \u00d7 B \/ 3,438, kde e je chyba polohy v mm, R je polom\u011br obrobku (vzd\u00e1lenost od st\u0159edu stolu k bodu \u0159ezu) v mm a B je v\u016fle v \u00fahlov\u00fdch minut\u00e1ch.<\/p>\n

\n\n\n\n\n\n\n\n\n
Zp\u011btn\u00e1 vazba B<\/th>\nR = 50 mm<\/th>\nR = 100 mm<\/th>\nR = 200 mm<\/th>\nR = 300 mm<\/th>\nvs. tolerance \u00b125 \u00b5m<\/th>\n<\/tr>\n<\/thead>\n
0,15\u2032 (10 \u00fahlov\u00fdch sekund, p\u0159ednastaveno)<\/td>\n2 \u00b5m<\/td>\n4 \u00b5m<\/td>\n9 \u00b5m<\/td>\n13 \u00b5m<\/td>\nPou\u017e\u00edv\u00e1 8-52%<\/td>\n<\/tr>\n
0,5\u2032 (30 \u00fahlov\u00fdch sekund, t\u011bsn\u00e9)<\/td>\n7 \u00b5m<\/td>\n15 \u00b5m<\/td>\n29 \u00b5m \u26a0<\/td>\n44 \u00b5m \u26a0<\/td>\nPou\u017eit\u00ed 28-176%<\/td>\n<\/tr>\n
1\u2032 (standardn\u00ed pr\u016fmyslov\u00fd)<\/td>\n15 \u00b5m<\/td>\n29 \u00b5m \u26a0<\/td>\n58 \u00b5m \u26a0\u26a0<\/td>\n87 \u00b5m \u26a0\u26a0<\/td>\nPou\u017e\u00edv\u00e1 60-348%<\/td>\n<\/tr>\n
5\u2032 (obecn\u00e9 pr\u016fmyslov\u00e9)<\/td>\n73 \u00b5m<\/td>\n145 \u00b5m<\/td>\n291 \u00b5m<\/td>\n436 \u00b5m<\/td>\n292-1,744%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Tabulka zd\u016fvod\u0148uje pou\u017eit\u00ed p\u0159edpjat\u00fdch p\u00e1r\u016f \u0161nekov\u00fdch kol s ochranou proti v\u016fli v jedn\u00e9 \u0159ad\u011b: p\u0159i R = 200 mm se standardn\u00ed v\u016fl\u00ed 1 \u00fahlov\u00e1 minuta je chyba polohy 58 \u00b5m \u2013 v\u00edce ne\u017e dvojn\u00e1sobek typick\u00e9 tolerance CNC obr\u00e1b\u011bn\u00ed plus m\u00ednus 25 \u00b5m. Dokonce i 0,5 \u00fahlov\u00e9 minuty (30 \u00fahlov\u00fdch sekund) produkuje 29 \u00b5m p\u0159i polom\u011bru 200 mm \u2013 st\u00e1le nad limitem. Pouze p\u0159edpjat\u00e1 konfigurace p\u0159i 10 \u00fahlov\u00fdch sekund\u00e1ch (0,15 \u00fahlov\u00fdch minut) se pohodln\u011b dr\u017e\u00ed v toleranci 9 \u00b5m. B\u011b\u017en\u00e9 pr\u016fmyslov\u00e9 p\u00e1ry \u0161nekov\u00fdch kol p\u0159i 5 \u00fahlov\u00fdch minut\u00e1ch jsou pro CNC indexov\u00e1n\u00ed zcela nepou\u017eiteln\u00e9 \u2013 chyba p\u0159i jak\u00e9mkoli praktick\u00e9m polom\u011bru obrobku p\u0159ekra\u010duje toleranci o \u0159\u00e1d.<\/p>\n

<\/p>\n

Metody p\u0159edp\u011bt\u00ed proti zp\u011btn\u00e9mu r\u00e1zu \u2013 jak CNC oto\u010dn\u00e9 stoly dosahuj\u00ed zp\u011btn\u00e9ho r\u00e1zu pod 10 \u00fahlov\u00fdch sekund<\/h2>\n
\n
\n

Standardn\u00ed p\u00e1ry \u0161nekov\u00fdch kol nemohou dos\u00e1hnout v\u016fle pod 10 \u00fahlov\u00fdch sekund pot\u0159ebn\u00e9 pro CNC indexov\u00e1n\u00ed pouze d\u00edky v\u00fdrobn\u00ed toleranci \u2013 nejmen\u0161\u00ed dosa\u017eiteln\u00e1 v\u016fle u konven\u010dn\u00edho jednod\u00edln\u00e9ho kola je p\u0159ibli\u017en\u011b 15 a\u017e 30 \u00fahlov\u00fdch sekund p\u0159i t\u0159\u00edd\u011b DIN 3. Pro dosa\u017een\u00ed 5 a\u017e 10 \u00fahlov\u00fdch sekund mus\u00ed b\u00fdt p\u00e1r \u0161nekov\u00fdch kol mechanicky p\u0159edpjat tak, aby boky zub\u016f udr\u017eovaly kontakt na obou stran\u00e1ch sou\u010dasn\u011b, \u010d\u00edm\u017e se eliminuje z\u00f3na v\u016fle, kter\u00e1 vytv\u00e1\u0159\u00ed v\u016fli.<\/p>\n<\/div>\n

\"P\u0159esn\u00fd<\/div>\n<\/div>\n
\n
\n
Pru\u017einov\u00e9 d\u011blen\u00e9 kolo<\/div>\n

Kolo je rozd\u011bleno na dv\u011b poloviny, p\u0159i\u010dem\u017e ka\u017ed\u00e1 zab\u00edr\u00e1 se \u0161nekem z opa\u010dn\u00fdch stran. Pru\u017eina mezi polovinami je od sebe odtla\u010duje a udr\u017euje kontakt na obou stran\u00e1ch sou\u010dasn\u011b. Efektivn\u00ed v\u016fle: 3 a\u017e 8 \u00fahlov\u00fdch sekund. V\u00fdhoda: samonastaviteln\u00e1 \u2013 pru\u017eina kompenzuje tepelnou rozta\u017enost a drobn\u00e9 opot\u0159eben\u00ed. Nev\u00fdhoda: omezen\u00fd kroutic\u00ed moment (pru\u017eina mus\u00ed b\u00fdt p\u0159ekon\u00e1na, ne\u017e zuby p\u0159enesou pln\u00e9 zat\u00ed\u017een\u00ed). Nejvhodn\u011bj\u0161\u00ed pro: lehk\u00e9 d\u011blic\u00ed stoly (4. osa na vertik\u00e1ln\u00edch obr\u00e1b\u011bc\u00edch centrech, d\u011blic\u00ed hlavy).<\/p>\n<\/div>\n

\n
Dvojit\u00fd \u0161nek s nastaven\u00edm podlo\u017eky<\/div>\n

Dva \u0161nekov\u00e9 z\u00e1vity jsou obr\u00e1b\u011bny na stejn\u00e9 h\u0159\u00eddeli s m\u00edrn\u00fdm axi\u00e1ln\u00edm p\u0159esazen\u00edm. Podlo\u017eky mezi pouzdry \u0161nekov\u00fdch lo\u017eisek nastavuj\u00ed p\u0159edp\u011bt\u00ed \u0159\u00edzen\u00edm axi\u00e1ln\u00ed polohy \u0161neku vzhledem ke kolu. Efektivn\u00ed v\u016fle: 5 a\u017e 15 \u00fahlov\u00fdch sekund. V\u00fdhoda: pln\u00e1 kapacita kroutic\u00edho momentu (p\u0159edp\u011bt\u00ed je mechanick\u00e9, nikoliv pru\u017einou). Nev\u00fdhoda: vy\u017eaduje op\u011btovn\u00e9 podlo\u017een\u00ed, jakmile se kolo opot\u0159ebuje (ka\u017ed\u00e9 2 a\u017e 4 roky). Nejlep\u0161\u00ed pro: t\u011b\u017ek\u00e9 5os\u00e9 stoly, odvalovac\u00ed fr\u00e9zky na ozuben\u00ed a horizont\u00e1ln\u00ed vyvrt\u00e1va\u010dky, oto\u010dn\u00e9 stoly.<\/p>\n<\/div>\n<\/div>\n

\"P\u0159esn\u00fd<\/p>\n

\n
Pozn\u00e1mka k in\u017een\u00fdrsk\u00e9mu stolu<\/div>\n

Korejsk\u00fd v\u00fdrobce CNC obr\u00e1b\u011bc\u00edch stroj\u016f zakoupil n\u00e1hradn\u00ed p\u00e1ry \u0161nekov\u00fdch p\u0159evod\u016f pro 15 nakl\u00e1p\u011bc\u00edch oto\u010dn\u00fdch stol\u016f (kombinace 4. a 5. osy) instalovan\u00fdch na horizont\u00e1ln\u00edch obr\u00e1b\u011bc\u00edch centrech. P\u016fvodn\u00ed p\u00e1ry byly p\u0159edpjat\u00e9 s d\u011blen\u00fdm kolem a efektivn\u00ed v\u016fl\u00ed 6 \u00fahlov\u00fdch sekund, t\u0159\u00edda DIN 4. N\u00e1hradn\u00ed p\u00e1ry od jin\u00e9ho dodavatele byly specifikov\u00e1ny jako \u201et\u0159\u00edda DIN 4, bez v\u016fle\u201c \u2013 ale byly to duplexn\u00ed typy s nastaven\u00edm podlo\u017ekami, nikoli d\u011blen\u00e9 s pru\u017einov\u00fdm p\u0159edp\u011bt\u00edm. Po instalaci m\u011b\u0159ila v\u016fle 12 \u00fahlov\u00fdch sekund \u2013 v r\u00e1mci tolerance t\u0159\u00eddy DIN 4, ale dvojn\u00e1sobek p\u016fvodn\u00edch 6 \u00fahlov\u00fdch sekund. P\u0159i typick\u00e9m polom\u011bru obrobku 150 mm se chyba polohov\u00e1n\u00ed zv\u00fd\u0161ila ze 4 \u00b5m na 9 \u00b5m \u2013 st\u00e1le v r\u00e1mci tolerance CNC plus\/m\u00ednus 25 \u00b5m pro v\u0161eobecn\u00e9 obr\u00e1b\u011bn\u00ed, ale nedostate\u010dn\u00e9 pro konkr\u00e9tn\u00edho z\u00e1kazn\u00edka z leteck\u00e9ho pr\u016fmyslu, kter\u00fd vy\u017eaduje plus\/m\u00ednus 10 \u00b5m na dr\u00e1\u017ek\u00e1ch paty lopatek turb\u00edny. V\u00fdrobce obr\u00e1b\u011bc\u00edho stroje musel znovu podlo\u017eit v\u0161ech 15 stol\u016f, aby dos\u00e1hl tolerance 8 \u00fahlov\u00fdch sekund \u2013 2 hodiny kvalifikovan\u00e9 pr\u00e1ce na st\u016fl za 85 USD za hodinu, celkem 2 550 USD nepl\u00e1novan\u00e9 pr\u00e1ce. Ponau\u010den\u00ed: \u201eochrana proti v\u016fli\u201c nen\u00ed jedin\u00e1 specifikace \u2013 metoda p\u0159edp\u011bt\u00ed (d\u011blen\u00e9 kolo versus dvojit\u00fd \u0161nek), efektivn\u00ed hodnota v\u016fle (v \u00fahlov\u00fdch sekund\u00e1ch, nejen \u201eochrana proti v\u016fli\u201c) a t\u0159\u00edda p\u0159esnosti DIN \u2013 to v\u0161e mus\u00ed b\u00fdt explicitn\u011b specifikov\u00e1no. Dva p\u00e1ry proti v\u016fli t\u0159\u00eddy 4 DIN od r\u016fzn\u00fdch dodavatel\u016f mohou poskytovat r\u016fzn\u00e9 hodnoty v\u016fle, proto\u017ee \u201et\u0159\u00edda 4\u201c definuje toleranci geometrie zubu, nikoli \u00fa\u010dinnost p\u0159edp\u011bt\u00ed.<\/p>\n<\/div>\n

<\/p>\n

T\u0159i p\u0159\u00edpady specifikace p\u00e1ru \u0161nekov\u00fdch p\u0159evod\u016f s oto\u010dn\u00fdm stolem CNC<\/h2>\n

\"Kalen\u00fd<\/p>\n

P\u0159\u00edpad 1 \u2013 Korejsk\u00fd oto\u010dn\u00fd st\u016fl pro 4. osu: \u00d8250 mm, d\u011blen\u00e9 kolo, automobilov\u00e9 d\u00edly<\/h3>\n

Korejsk\u00fd v\u00fdrobce CNC obr\u00e1b\u011bc\u00edch stroj\u016f specifikoval dvojice \u0161nekov\u00fdch p\u0159evod\u016f pro oto\u010dn\u00fd st\u016fl o pr\u016fm\u011bru 250 mm pro 4. osu ur\u010den\u00fd pro obr\u00e1b\u011bn\u00ed automobilov\u00fdch sou\u010d\u00e1st\u00ed (hlin\u00edk a ocel, polom\u011br obrobku do 125 mm). Po\u017eadovan\u00e1 p\u0159esnost polohov\u00e1n\u00ed: plus\/m\u00ednus 15 \u00fahlov\u00fdch sekund. Opakovatelnost: plus\/m\u00ednus 5 \u00fahlov\u00fdch sekund. Dvojice \u0161nekov\u00fdch p\u0159evod\u016f: jednochod\u00e1, modul 1,5, pr\u016fm\u011br kola 180 mm, p\u0159evodov\u00fd pom\u011br 360:1, t\u0159\u00edda p\u0159esnosti DIN 4. P\u0159edp\u011bt\u00ed: pru\u017en\u011b p\u0159edepnut\u00e9 d\u011blen\u00e9 kolo. Efektivn\u00ed v\u016fle: 6 \u00fahlov\u00fdch sekund. Chyba polohov\u00e1n\u00ed p\u0159i R = 125 mm: 125 \u00d7 0,1 \/ 3 438 = 3,6 \u00b5m \u2013 v r\u00e1mci tolerance obr\u00e1b\u011bn\u00ed plus\/m\u00ednus 25 \u00b5m. \u0160nek: kalen\u00e1 a brou\u0161en\u00e1 ocel 20CrMnTi, Ra 0,2 \u00b5m, HRC 58 a\u017e 62. Kolo: odst\u0159ediv\u011b lit\u00fd fosforov\u00fd bronz CuSn12Ni. Maz\u00e1n\u00ed: V\u0159etenov\u00fd olej ISO VG 68 (sd\u00edlen\u00fd s lo\u017eisky stolu), cirkuluj\u00edc\u00ed centr\u00e1ln\u00edm mazac\u00edm syst\u00e9mem stroje. Motor: Servopohon AC 1,5 kW s absolutn\u00edm enkod\u00e9rem 131 072 \u010d\u00edslic. N\u00e1klady na sestavu p\u00e1ru \u0161nekov\u00fdch p\u0159evod\u016f: 680 USD. Ro\u010dn\u00ed produkce: 400 stol\u016f (16 000 sad p\u00e1r\u016f \u0161nekov\u00fdch p\u0159evod\u016f ro\u010dn\u011b v cel\u00e9 produktov\u00e9 \u0159ad\u011b).<\/p>\n

P\u0159\u00edpad 2 \u2013 Japonsk\u00fd 5os\u00fd nakl\u00e1p\u011bc\u00ed st\u016fl: \u00d8 400 mm, duplexn\u00ed \u0161nek, leteck\u00e1 tolerance<\/h3>\n

Japonsk\u00fd v\u00fdrobce 5os\u00fdch obr\u00e1b\u011bc\u00edch center specifikoval p\u00e1ry \u0161nekov\u00fdch p\u0159evod\u016f pro osu A (nakl\u00e1p\u011bn\u00ed) a osu C (rotace) nakl\u00e1p\u011bc\u00edho oto\u010dn\u00e9ho stolu o pr\u016fm\u011bru 400 mm ur\u010den\u00e9ho pro obr\u00e1b\u011bn\u00ed titanov\u00fdch a inconelov\u00fdch sou\u010d\u00e1st\u00ed v leteck\u00e9m pr\u016fmyslu. P\u0159esnost polohov\u00e1n\u00ed: plus\/m\u00ednus 8 \u00fahlov\u00fdch sekund. Leteck\u00e9 a kosmick\u00e9 aplikace vy\u017eadovaly \u0159ezn\u00e9 s\u00edly a\u017e 2 500 N p\u0159i polom\u011bru obrobku 180 mm \u2013 co\u017e na stole produkovalo zp\u011btn\u00fd to\u010div\u00fd moment 450 N\u00b7m. Pru\u017einov\u00e1 konstrukce s d\u011blen\u00fdm kolem tento to\u010div\u00fd moment nezvl\u00e1dla (p\u0159edp\u011bt\u00ed pru\u017einy omezeno na p\u0159ibli\u017en\u011b 150 N\u00b7m). Specifikace: duplexn\u00ed \u0161nek s nastaven\u00edm podlo\u017eek. Modul 2, pr\u016fm\u011br kola 280 mm, p\u0159evodov\u00fd pom\u011br 360:1, t\u0159\u00edda DIN 3. Efektivn\u00ed v\u016fle po podlo\u017een\u00ed podlo\u017eek: 5 \u00fahlov\u00fdch sekund. Chyba polohov\u00e1n\u00ed p\u0159i R = 180 mm: 180 \u00d7 0,083 \/ 3 438 = 4,4 \u00b5m \u2013 v r\u00e1mci tolerance plus\/m\u00ednus 10 \u00b5m pro leteck\u00fd pr\u016fmysl s 56% rezervou. \u0160nek: cementovan\u00fd 18CrNiMo7-6, brou\u0161en\u00fd Ra 0,15 \u00b5m, HRC 60 a\u017e 63. Kotou\u010d: odst\u0159ediv\u011b lit\u00fd c\u00ednov\u00fd bronz s p\u0159\u00eddavkem niklu (zv\u00fd\u0161en\u00e1 \u00fanavov\u00e1 \u017eivotnost pro t\u011b\u017ek\u00e9 leteck\u00e9 obr\u00e1b\u011bn\u00ed). Ochrana chladic\u00ed kapaliny: labyrintov\u00e9 t\u011bsn\u011bn\u00ed a proplachov\u00e1n\u00ed vzduchem na vstupu do h\u0159\u00eddele \u0161neku pro zabr\u00e1n\u011bn\u00ed vniknut\u00ed chladic\u00ed kapaliny. Cena za sestavu p\u00e1ru \u0161nekov\u00fdch kol (osa A nebo C): 2 400 USD. Proch\u00e1zet p\u0159esn\u00fd \u0161nekov\u00fd reduktor<\/a>\u00a0mo\u017enosti pro CNC oto\u010dn\u00e9 stoly a aplikace v obr\u00e1b\u011bc\u00edch stroj\u00edch.<\/p>\n

P\u0159\u00edpad 3 \u2013 Vietnamsk\u00e1 manu\u00e1ln\u00ed d\u011blic\u00ed hlava: 40:1, bez p\u0159edp\u011bt\u00ed, pro vzd\u011bl\u00e1v\u00e1n\u00ed a d\u00edlnu<\/h3>\n

Vietnamsk\u00fd distributor obr\u00e1b\u011bc\u00edch stroj\u016f specifikoval p\u00e1ry \u0161nekov\u00fdch p\u0159evod\u016f pro ru\u010dn\u00ed d\u011blic\u00ed hlavy prod\u00e1van\u00e9 odborn\u00fdm u\u010dili\u0161t\u00edm a mal\u00fdm d\u00edln\u00e1m. D\u011blic\u00ed hlava se montuje na st\u016fl fr\u00e9zky a indexuje obrobek v pevn\u00fdch \u00fahlov\u00fdch kroc\u00edch pro \u0159ez\u00e1n\u00ed zub\u016f ozuben\u00fdch kol, \u0161estihrann\u00fdch plo\u0161ek a stejn\u011b rozm\u00edst\u011bn\u00fdch otvor\u016f. P\u0159evodov\u00fd pom\u011br: 40:1 (9 stup\u0148\u016f na ot\u00e1\u010dku \u0161neku \u2013 standardn\u00ed d\u011bl\u00edc\u00ed pom\u011br, kter\u00fd vytv\u00e1\u0159\u00ed b\u011b\u017en\u00e9 d\u011blen\u00ed: 40 ot\u00e1\u010dek pro pln\u00e9 oto\u010den\u00ed, 20 ot\u00e1\u010dek pro 180 stup\u0148\u016f, 10 ot\u00e1\u010dek pro 90 stup\u0148\u016f). Bez p\u0159edp\u011bt\u00ed (standardn\u00ed jednod\u00edln\u00e9 kolo s v\u016fl\u00ed 2 a\u017e 3 \u00fahlov\u00fdch minut). Chyba polohov\u00e1n\u00ed p\u0159i R = 50 mm: 50 \u00d7 2,5 \/ 3 438 = 36 \u00b5m. To bylo p\u0159ijateln\u00e9 pro typickou toleranci plus m\u00ednus 0,1 mm (100 \u00b5m) pro ru\u010dn\u00ed obr\u00e1b\u011bn\u00ed v d\u00edln\u011b \u2013 sm\u011br p\u0159ibli\u017eov\u00e1n\u00ed ru\u010dn\u00edho kola obsluhy (v\u017edy p\u0159ibli\u017eov\u00e1n\u00ed ze stejn\u00e9ho sm\u011bru) \u00fa\u010dinn\u011b eliminuje v\u016fli z polohov\u00e1n\u00ed. \u0160nek: uhl\u00edkov\u00e1 ocel, odvalovan\u00e1 Ra 0,8 \u00b5m, kalen\u00e1 HRC 55. Kolo: fosforov\u00fd bronz lit\u00fd do p\u00edsku. Cena za p\u00e1r: 32 USD. P\u0159\u00edpadov\u00e1 studie ukazuje, \u017ee ne ka\u017ed\u00e9 indexov\u00e1n\u00ed obr\u00e1b\u011bc\u00edch stroj\u016f vy\u017eaduje ochranu proti zp\u011btn\u00e9mu r\u00e1zu \u2013 ru\u010dn\u00ed ovl\u00e1d\u00e1n\u00ed s konzistentn\u00edm sm\u011brem n\u00e1jezdu eliminuje efekt zp\u011btn\u00e9ho r\u00e1zu, kter\u00fd se objevuje pouze u obousm\u011brn\u00e9ho CNC polohov\u00e1n\u00ed.<\/p>\n

\"workshop<\/p>\n

\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n
\n
\nOt\u00e1zka: Pro\u010d je 360:1 standardn\u00edm pom\u011brem pro CNC oto\u010dn\u00e9 stoly?<\/summary>\n

P\u0159i pom\u011bru 360:1 oto\u010d\u00ed \u0161nekov\u00fd pohon st\u016fl p\u0159esn\u011b o jeden stupe\u0148 \u2013 co\u017e usnad\u0148uje ode\u010det \u00fahl\u016f ze servo enkod\u00e9ru: po\u010det \u00fahl\u016f enkod\u00e9ru na stupe\u0148 se rovn\u00e1 rozli\u0161en\u00ed enkod\u00e9ru na ot\u00e1\u010dku. Elektronick\u00fd p\u0159evodov\u00fd pom\u011br CNC \u0159\u00eddic\u00ed jednotky je 1:1, co\u017e eliminuje chyby zaokrouhlov\u00e1n\u00ed v polohovac\u00ed smy\u010dce. N\u011bkter\u00e9 specializovan\u00e9 aplikace pou\u017e\u00edvaj\u00ed pom\u011br 90:1 (pro vysokorychlostn\u00ed kontinu\u00e1ln\u00ed konturov\u00e1n\u00ed) nebo 720:1 (pro ultrajemn\u00e9 \u00fahlov\u00e9 rozli\u0161en\u00ed), ale 360:1 je standardem pro univerz\u00e1ln\u00ed indexovac\u00ed stoly, proto\u017ee poskytuje nejlep\u0161\u00ed rovnov\u00e1hu mezi \u00fahlov\u00fdm rozli\u0161en\u00edm, v\u00fdstupn\u00ed rychlost\u00ed a mechanickou \u00fa\u010dinnost\u00ed.<\/p>\n<\/details>\n

\nOt\u00e1zka: Jak ovliv\u0148uje obr\u00e1b\u011bn\u00e9 teplo p\u0159esnost \u0161nekov\u00e9ho ozuben\u00e9ho kola?<\/summary>\n

Obr\u00e1b\u011bn\u00ed generuje teplo, kter\u00e9 proud\u00ed z obrobku a v\u0159etena do t\u011blesa stolu, \u010d\u00edm\u017e se b\u011bhem prodlou\u017een\u00fdch \u0159ezn\u00fdch cykl\u016f zvy\u0161uje teplota stolu o 5 a\u017e 20 stup\u0148\u016f Celsia. Toto tepeln\u00e9 rozta\u017een\u00ed zv\u011bt\u0161uje pr\u016fm\u011br kotou\u010de a posouv\u00e1 osovou vzd\u00e1lenost \u2013 \u010d\u00edm\u017e se zvy\u0161uje v\u016fle zhruba o 2 a\u017e 5 \u00fahlov\u00fdch sekund na ka\u017ed\u00fdch 10 stup\u0148\u016f Celsia. U p\u0159edpjat\u00fdch p\u00e1r\u016f m\u016f\u017ee tepeln\u00e1 rozta\u017enost p\u0159edp\u011bt\u00ed zv\u011bt\u0161it (sn\u00ed\u017eit \u00fa\u010dinnost a zv\u00fd\u0161it zat\u00ed\u017een\u00ed motoru) nebo uvolnit (zv\u00fd\u0161it v\u016fli) v z\u00e1vislosti na tom, zda se v\u00edce roztahuje kotou\u010d nebo pouzdro. Pru\u017einov\u00e1 d\u011blen\u00e1 kola se tepeln\u00e9ho n\u00e1r\u016fstu samovyrovn\u00e1vaj\u00ed; duplexn\u00ed p\u00e1ry s nastaven\u00edm podlo\u017eek nikoli \u2013 vy\u017eaduj\u00ed tepelnou stabilizaci (zah\u0159\u00edvac\u00ed cyklus p\u0159ed p\u0159esn\u00fdm obr\u00e1b\u011bn\u00edm) nebo aktivn\u00ed tepelnou kompenzaci v CNC \u0159\u00eddic\u00ed jednotce. Pro leteck\u00e9 a kosmick\u00e9 obr\u00e1b\u011bn\u00ed s po\u017eadavky na plus nebo m\u00ednus 8 \u00fahlov\u00fdch sekund je standardn\u00ed prax\u00ed 30minutov\u00fd zah\u0159\u00edvac\u00ed cyklus p\u0159ed \u0159ez\u00e1n\u00edm prvn\u00edho obrobku.<\/p>\n<\/details>\n

\nOt\u00e1zka: Jak je zabr\u00e1n\u011bno vniknut\u00ed chladic\u00ed kapaliny do sk\u0159\u00edn\u011b \u0161nekov\u00e9ho p\u0159evodu?<\/summary>\n

CNC obr\u00e1b\u011bn\u00ed vyu\u017e\u00edv\u00e1 vysokotlakou chladic\u00ed kapalinu (10 a\u017e 70 bar\u016f), kter\u00e1 zaplavuje pracovn\u00ed z\u00f3nu a st\u0159\u00edk\u00e1 na oto\u010dn\u00fd st\u016fl. \u0160nekov\u00fd p\u0159evodov\u00fd p\u00e1r chr\u00e1n\u00ed t\u0159i strategie t\u011bsn\u011bn\u00ed: labyrintov\u00e9 t\u011bsn\u011bn\u00ed na rozhran\u00ed t\u011blesa stolu a sk\u0159\u00edn\u011b (bezkontaktn\u00ed, \u017e\u00e1dn\u00e9 opot\u0159eben\u00ed); proplachov\u00e1n\u00ed vzduchem (stla\u010den\u00fd vzduch o tlaku 0,1 a\u017e 0,3 baru neust\u00e1le fouk\u00e1 labyrintem ven, \u010d\u00edm\u017e se zabra\u0148uje vniknut\u00ed chladic\u00ed kapaliny); a odvod\u0148ovac\u00ed kan\u00e1ly, kter\u00e9 odv\u00e1d\u011bj\u00ed ve\u0161kerou chladic\u00ed kapalinu, kter\u00e1 proch\u00e1z\u00ed labyrintem, od sk\u0159\u00edn\u011b p\u0159evodovky d\u0159\u00edve, ne\u017e dos\u00e1hne olejov\u00e9ho t\u011bsn\u011bn\u00ed. Pr\u00e9miov\u00e9 CNC stoly vyu\u017e\u00edvaj\u00ed v\u0161echny t\u0159i. Pokud se chladic\u00ed kapalina dostane do olejov\u00e9ho syst\u00e9mu, emulguje v\u0159etenov\u00fd olej a zp\u016fsobuje zrychlen\u00e9 opot\u0159eben\u00ed kontaktn\u00edch ploch \u0161neku a kola \u2013 m\u011b\u0159iteln\u00e9 jako zv\u00fd\u0161en\u00ed v\u016fle o 5 a\u017e 10 \u00fahlov\u00fdch sekund b\u011bhem 6 m\u011bs\u00edc\u016f. Pravideln\u00e1 anal\u00fdza oleje (obsah vody pod 0,05 procenta) sleduje \u00fa\u010dinnost t\u011bsn\u011bn\u00ed.<\/p>\n<\/details>\n

\nOt\u00e1zka: Jak\u00e1 je typick\u00e1 \u017eivotnost \u0161nekov\u00e9ho p\u0159evodu oto\u010dn\u00e9ho stolu CNC?<\/summary>\n

CNC oto\u010dn\u00e9 stoly ve v\u00fdrobn\u00edm prost\u0159ed\u00ed obvykle b\u011b\u017e\u00ed 2 000 a\u017e 4 000 hodin ro\u010dn\u011b s p\u0159eru\u0161ovan\u00fdm indexov\u00e1n\u00edm. \u017divotnost bronzov\u00e9ho kola je 5 a\u017e 10 let pro v\u0161eobecn\u00e9 obr\u00e1b\u011bn\u00ed (ocel a hlin\u00edk) a 3 a\u017e 6 let pro t\u011b\u017ek\u00e9 leteck\u00e9 obr\u00e1b\u011bn\u00ed (titan, Inconel \u2013 vy\u0161\u0161\u00ed \u0159ezn\u00e9 s\u00edly vytv\u00e1\u0159ej\u00ed vy\u0161\u0161\u00ed kontaktn\u00ed nap\u011bt\u00ed na zubech \u0161nekov\u00e9ho kola). Ocelov\u00fd \u0161nek vydr\u017e\u00ed 10 a\u017e 20 let. Omezuj\u00edc\u00edm faktorem \u017eivotnosti je n\u00e1r\u016fst v\u016fle nad p\u0159ijatelnou toleranci obr\u00e1b\u011bn\u00ed \u2013 monitorov\u00e1n ka\u017edoro\u010dn\u00edm ov\u011b\u0159ov\u00e1n\u00edm p\u0159esnosti pomoc\u00ed laserov\u00e9ho interferometru nebo p\u0159esn\u00e9ho polygonu. V\u00fdm\u011bnu kola napl\u00e1nujte, kdy\u017e v\u016fle p\u0159ekro\u010d\u00ed dvojn\u00e1sobek p\u016fvodn\u00ed p\u0159edpjat\u00e9 hodnoty (nap\u0159. vym\u011b\u0148te, kdy\u017e p\u016fvodn\u00ed 6-sekundov\u00e1 hodnota naroste na 12-sekundovou).<\/p>\n<\/details>\n

\nOt\u00e1zka: M\u016f\u017ee momentov\u00fd motor s p\u0159\u00edm\u00fdm pohonem nahradit \u0161nekov\u00fd p\u0159evod v CNC oto\u010dn\u00fdch stolech?<\/summary>\n

Momentov\u00e9 motory s p\u0159\u00edm\u00fdm pohonem (DDT) se pou\u017e\u00edvaj\u00ed u vysokorychlostn\u00edch 5os\u00fdch stol\u016f, kde je vy\u017eadov\u00e1na kontinu\u00e1ln\u00ed rychlost obr\u00e1b\u011bn\u00ed nad 50 ot\/min. DDT zcela eliminuje probl\u00e9m s v\u016fl\u00ed, proto\u017ee neexistuje \u017e\u00e1dn\u00fd ozuben\u00fd p\u0159evod. DDT v\u0161ak postr\u00e1d\u00e1 samosvornost \u2013 k uchycen\u00ed stolu b\u011bhem \u0159ez\u00e1n\u00ed je pot\u0159eba samostatn\u00e1 hydraulick\u00e1 svorka, co\u017e zvy\u0161uje n\u00e1klady a slo\u017eitost. DDT m\u00e1 tak\u00e9 ni\u017e\u0161\u00ed hustotu to\u010div\u00e9ho momentu ne\u017e \u0161nekov\u00fd p\u0159evod p\u0159i n\u00edzk\u00fdch ot\u00e1\u010dk\u00e1ch \u2013 st\u016fl DDT o pr\u016fm\u011bru 400 mm stoj\u00ed 3 a\u017e 5kr\u00e1t v\u00edce ne\u017e ekvivalentn\u00ed \u0161nekov\u00fd p\u0159evod. Pro v\u011bt\u0161inu produk\u010dn\u00edho CNC obr\u00e1b\u011bn\u00ed (indexov\u00e1n\u00ed plus konturov\u00e1n\u00ed st\u0159edn\u00ed rychlost\u00ed pod 30 ot\/min) z\u016fst\u00e1v\u00e1 \u0161nekov\u00fd p\u0159evod n\u00e1kladov\u011b efektivn\u011bj\u0161\u00ed ne\u017e DDT. DDT je \u200b\u200bup\u0159ednost\u0148ov\u00e1n pouze pro vysokorychlostn\u00ed kontinu\u00e1ln\u00ed 5os\u00e9 obr\u00e1b\u011bn\u00ed slo\u017eit\u00fdch voln\u00fdch tvarov\u00fdch ploch, kde konturovac\u00ed rychlost p\u0159ekra\u010duje praktick\u00fd limit \u0161nekov\u00e9ho p\u0159evodu.<\/p>\n<\/details>\n<\/div>\n

<\/p>\n

\u0160nekov\u00e9 p\u0159evody s oto\u010dn\u00fdm stolem pro CNC pracuj\u00ed v t\u00e9to 30\u010dl\u00e1nkov\u00e9 s\u00e9rii s nejvy\u0161\u0161\u00ed \u00farovn\u00ed p\u0159esnosti ze v\u0161ech aplikac\u00ed \u2013 v\u016fle pod 10 \u00fahlov\u00fdch sekund, t\u0159\u00edda p\u0159esnosti DIN 3 a\u017e 5 a chyby polohy m\u011b\u0159en\u00e9 v jednotk\u00e1ch mikron\u016f v bod\u011b \u0159ezu obrobku. Tabulka v\u016fle k chyb\u011b polohy (e = R \u00d7 B \/ 3 438) kvantifikuje, pro\u010d standardn\u00ed pr\u016fmyslov\u00e9 \u0161nekov\u00e9 p\u0159evody nemohou slou\u017eit pro CNC indexov\u00e1n\u00ed: p\u0159i typick\u00e9m polom\u011bru obrobku p\u0159ekra\u010duje i 1 \u00fahlov\u00e1 minuta v\u016fle tolerance CNC obr\u00e1b\u011bn\u00ed faktorem 2 a\u017e 3. P\u0159edpjat\u00e9 mechanismy proti v\u016fli (pru\u017einov\u00e9 d\u011blen\u00e9 kolo pro lehk\u00e9 zat\u00ed\u017een\u00ed, duplexn\u00ed kolo s nastaven\u00edm podlo\u017eek pro t\u011b\u017ek\u00e9 zat\u00ed\u017een\u00ed) jsou povinn\u00e9 pro v\u00fdrobn\u00ed CNC stoly. Pom\u011br 360:1 je standardem, proto\u017ee poskytuje celo\u010d\u00edseln\u00e9 \u00fahlov\u00e9 rozli\u0161en\u00ed ze servokod\u00e9ru. Pro v\u00fdrobce obr\u00e1b\u011bc\u00edch stroj\u016f, kte\u0159\u00ed specifikuj\u00ed \u0161nekov\u00e9 p\u0159evody s oto\u010dn\u00fdm stolem, jsou kl\u00ed\u010dov\u00fdmi parametry v\u016fle (v \u00fahlov\u00fdch sekund\u00e1ch, nikoli v \u00fahlov\u00fdch minut\u00e1ch), t\u0159\u00edda p\u0159esnosti DIN, metoda p\u0159edp\u011bt\u00ed a strategie t\u011bsn\u011bn\u00ed chladic\u00ed kapaliny.<\/p>\n

Pro v\u00fdrobce CNC obr\u00e1b\u011bc\u00edch stroj\u016f a oprav\u00e1\u0159e oto\u010dn\u00fdch stol\u016f nab\u00edz\u00ed na\u0161e konstruk\u010dn\u00ed odd\u011blen\u00ed p\u0159esn\u00e9 p\u00e1ry \u0161nekov\u00fdch p\u0159evod\u016f t\u0159\u00eddy DIN 3 a\u017e 6 s p\u0159edpjat\u00fdmi konfiguracemi proti zp\u011btn\u00e9mu chodu. Standardn\u00ed katalog p\u0159esn\u00e9 \u0161nekov\u00e9 p\u0159evodovky<\/a> Zahrnuje p\u0159evodov\u00e9 pom\u011bry 360:1 a 40:1 od pr\u016fm\u011bru kotou\u010de 80 do 280 mm s mo\u017enost\u00ed d\u011blen\u00e9ho kotou\u010de a duplexn\u00ed verze. Za\u0161lete specifikaci pohonu CNC stolu s uveden\u00edm pr\u016fm\u011bru stolu, p\u0159esnosti polohy (\u00fahlov\u00e9 sekundy), maxim\u00e1ln\u00edho polom\u011bru obrobku, \u0159ezn\u00e9 s\u00edly a typu chladic\u00ed kapaliny.<\/p>\n

<\/p>\n

\n

Specifikace p\u00e1r\u016f \u0161nekov\u00fdch p\u0159evod\u016f pro CNC oto\u010dn\u00e9 stoly?<\/h3>\n

Za\u0161lete pr\u016fm\u011br stolu, po\u017eadovanou p\u0159esnost (\u00fahlov\u00e9 vte\u0159iny), maxim\u00e1ln\u00ed polom\u011br obrobku a \u0159eznou s\u00edlu, typ chladic\u00ed kapaliny a zda pot\u0159ebujete p\u0159edp\u011bt\u00ed s d\u011blen\u00fdm kotou\u010dem nebo s dvojit\u00fdm p\u0159edp\u011bt\u00edm. Vypo\u010d\u00edt\u00e1me chybu polohy na polom\u011bru va\u0161eho obrobku a doporu\u010d\u00edme t\u0159\u00eddu DIN a specifikaci p\u0159edp\u011bt\u00ed.<\/p>\n

Vy\u017e\u00e1dejte si specifikaci pohonu CNC stolu \u2192<\/a><\/p>\n<\/div>\n

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

Korea Ever-Power \u00b7 Application Engineering Guide Worm and Worm Wheel for CNC Rotary Table Indexing A 5-axis CNC machining centre cuts a turbine blade at 12,000 RPM spindle speed. The 4th-axis rotary table positions the blade blank to within 10 arcseconds \u2014 0.003 degrees \u2014 and holds it against 800 N of cutting force while […]<\/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":[2821],"tags":[],"class_list":["post-1357","post","type-post","status-publish","format-standard","hentry","category-worm-and-worm-wheel"],"_links":{"self":[{"href":"https:\/\/worm-and-worm-wheel.com\/cs\/wp-json\/wp\/v2\/posts\/1357","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/worm-and-worm-wheel.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/worm-and-worm-wheel.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/worm-and-worm-wheel.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/worm-and-worm-wheel.com\/cs\/wp-json\/wp\/v2\/comments?post=1357"}],"version-history":[{"count":4,"href":"https:\/\/worm-and-worm-wheel.com\/cs\/wp-json\/wp\/v2\/posts\/1357\/revisions"}],"predecessor-version":[{"id":1361,"href":"https:\/\/worm-and-worm-wheel.com\/cs\/wp-json\/wp\/v2\/posts\/1357\/revisions\/1361"}],"wp:attachment":[{"href":"https:\/\/worm-and-worm-wheel.com\/cs\/wp-json\/wp\/v2\/media?parent=1357"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/worm-and-worm-wheel.com\/cs\/wp-json\/wp\/v2\/categories?post=1357"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/worm-and-worm-wheel.com\/cs\/wp-json\/wp\/v2\/tags?post=1357"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}