[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.flopi.cz\/vrtani-a-zavitovani\/#Article","mainEntityOfPage":"https:\/\/www.flopi.cz\/vrtani-a-zavitovani\/","headline":"Vrt\u00e1n\u00ed a z\u00e1vitov\u00e1n\u00ed","name":"Vrt\u00e1n\u00ed a z\u00e1vitov\u00e1n\u00ed","description":"P\u0159i sou\u010dasn\u00e9m pr\u016fmyslov\u00e9m obr\u00e1b\u011bn\u00ed kov\u016f je vedle n\u00e1rok\u016f na p\u0159esnost kladen velk\u00fd d\u016fraz i na rychlost zpracov\u00e1n\u00ed. S ohledem na to se ukazuje, \u017ee je \u017e\u00e1douc\u00ed \u0159e\u0161it vrt\u00e1n\u00ed a z\u00e1vitov\u00e1n\u00ed jako jednu komplexn\u00ed technologii. K dispozici ji\u017e jsou z\u00e1vitovac\u00ed n\u00e1stroje pro v\u00fdrobu hlubok\u00fdch z\u00e1vit\u016f a pro vysokorychlostn\u00ed obr\u00e1b\u011bn\u00ed. V\u00fdb\u011br n\u00e1stroj\u016f pro hlubok\u00e9 z\u00e1vity je omezen, […]","datePublished":"2019-12-01","dateModified":"2019-12-01","author":{"@type":"Person","@id":"https:\/\/www.flopi.cz\/author\/#Person","name":"","url":"https:\/\/www.flopi.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/ac70c9e5ac34d1687bd81eed3e0a5127e2920111fdfe832b53d740bc4b86c4fd?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/ac70c9e5ac34d1687bd81eed3e0a5127e2920111fdfe832b53d740bc4b86c4fd?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"flopi.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.flopi.cz\/wp-content\/uploads\/img_a369029_w1712_t1581320602.jpg","url":"https:\/\/www.flopi.cz\/wp-content\/uploads\/img_a369029_w1712_t1581320602.jpg","height":0,"width":0},"url":"https:\/\/www.flopi.cz\/vrtani-a-zavitovani\/","about":["L\u00e1ska"],"wordCount":440,"articleBody":"   P\u0159i sou\u010dasn\u00e9m pr\u016fmyslov\u00e9m obr\u00e1b\u011bn\u00ed kov\u016f je vedle n\u00e1rok\u016f na p\u0159esnost kladen velk\u00fd d\u016fraz i na rychlost zpracov\u00e1n\u00ed. S ohledem na to se ukazuje, \u017ee je \u017e\u00e1douc\u00ed \u0159e\u0161it vrt\u00e1n\u00ed a z\u00e1vitov\u00e1n\u00ed jako jednu komplexn\u00ed technologii. K dispozici ji\u017e jsou z\u00e1vitovac\u00ed n\u00e1stroje pro v\u00fdrobu hlubok\u00fdch z\u00e1vit\u016f a pro vysokorychlostn\u00ed obr\u00e1b\u011bn\u00ed.  V\u00fdb\u011br n\u00e1stroj\u016f pro hlubok\u00e9 z\u00e1vity je omezen, d\u00edky speci\u00e1ln\u00ed konstrukci maj\u00ed vysokou cenu. Tyto n\u00e1stroje maj\u00ed redukov\u00e1nu vod\u00edc\u00ed \u010d\u00e1st a pro lep\u0161\u00ed odvod t\u0159\u00edsek maj\u00ed dlouh\u00fd v\u00fdb\u011bh dr\u00e1\u017eek s brou\u0161en\u00fdm povrchem.  Z\u00e1vit je mo\u017en\u00e9 vytv\u00e1\u0159et i tv\u00e1\u0159en\u00edm, kdy nedoch\u00e1z\u00ed k odeb\u00edr\u00e1n\u00ed t\u0159\u00edsky, z\u00e1vitov\u00e1 \u0161roubovice je do materi\u00e1lu vyma\u010dk\u00e1v\u00e1na. Tento zp\u016fsob je v\u0161ak mo\u017en\u00e9 pou\u017e\u00edt jen u tv\u00e1rn\u00fdch a m\u011bkk\u00fdch materi\u00e1l\u016f, p\u0159edvrtan\u00fd otvor pro z\u00e1vit mus\u00ed b\u00fdt v\u011bt\u0161\u00ed ne\u017e pro klasick\u00e9 \u0159ez\u00e1n\u00ed z\u00e1vitu. P\u0159i tv\u00e1\u0159en\u00ed doch\u00e1z\u00ed ke zhutn\u011bn\u00ed materi\u00e1lu, proto m\u00e1 takto vytvo\u0159en\u00fd z\u00e1vit v\u011bt\u0161\u00ed pevnost. V podm\u00ednk\u00e1ch men\u0161\u00ed nebo dom\u00e1c\u00ed d\u00edlny se pro \u0159ez\u00e1n\u00ed vnit\u0159n\u00edch z\u00e1vit\u016f ve v\u00e1lcov\u00e9m otvoru pou\u017e\u00edv\u00e1 maticov\u00fd trubkov\u00fd nebo trap\u00e9zov\u00fd z\u00e1vitn\u00edk. Vn\u011bj\u0161\u00ed z\u00e1vity se \u0159e\u017eou z\u00e1vitov\u00fdm o\u010dkem nebo z\u00e1vitnic\u00ed. P\u0159i ru\u010dn\u00edm \u0159ez\u00e1n\u00ed se upev\u0148uj\u00ed do vratidel, ty umo\u017en\u00ed jejich jednoduch\u00e9 uchopen\u00ed a dostate\u010dn\u00e9 p\u016fsoben\u00ed s\u00edly. P\u0159i ru\u010dn\u00edm \u0159ez\u00e1n\u00ed vnit\u0159n\u00edho z\u00e1vitu se obvykle pou\u017e\u00edv\u00e1 sada, slo\u017een\u00e1 ze t\u0159\u00ed z\u00e1vitn\u00edk\u016f. Prvn\u00ed p\u0159ed\u0159ez\u00e1v\u00e1 a bere 60 procent materi\u00e1lu, druh\u00fd \u0159e\u017ee se sou\u010dasn\u00fdm odebr\u00e1n\u00edm 30 procent a t\u0159et\u00ed do\u0159ez\u00e1v\u00e1n\u00edm odebere zb\u00fdvaj\u00edc\u00edch 10 procent materi\u00e1lu a z\u00e1vit kalibruje. V pr\u016fmyslov\u00e9 v\u00fdrob\u011b se pou\u017e\u00edv\u00e1 strojn\u00ed nebo maticov\u00fd n\u00e1stroj, pomoc\u00ed n\u011bho\u017e je mo\u017en\u00e9 dokon\u010dit operaci bez nutnosti jeho v\u00fdm\u011bny.  P\u0159i \u0159ez\u00e1n\u00ed z\u00e1vitu je s ohledem na druh zpracov\u00e1van\u00e9ho materi\u00e1lu d\u016fle\u017eit\u00e9 maz\u00e1n\u00ed pro sn\u00ed\u017een\u00ed t\u0159en\u00ed. Nap\u0159\u00edklad p\u0159i \u0159ez\u00e1n\u00ed z\u00e1vitu do hlin\u00edku nebo duralu se pou\u017e\u00edv\u00e1 m\u00fddlov\u00e1 sm\u011bs, pro \u0159ez\u00e1n\u00ed do ocel\u00ed se pou\u017e\u00edv\u00e1 \u0159epkov\u00fd olej a p\u0159i \u0159ez\u00e1n\u00ed v litin\u011b stla\u010den\u00fd vzduch.                                                                                                                                                                                                                                                                                                                                                                                                   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