[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.rejza.cz\/kde-se-uplatni-tvareci-zavitnik\/#Article","mainEntityOfPage":"https:\/\/www.rejza.cz\/kde-se-uplatni-tvareci-zavitnik\/","headline":"Kde se uplatn\u00ed tv\u00e1\u0159ec\u00ed z\u00e1vitn\u00edk","name":"Kde se uplatn\u00ed tv\u00e1\u0159ec\u00ed z\u00e1vitn\u00edk","description":"Tv\u00e1\u0159ec\u00ed z\u00e1vitn\u00edky I-nastroje jsou ve stroj\u00edrenstv\u00ed specifickou kategori\u00ed v\u00fdroby \u0161roubov\u00fdch spoj\u016f. Vytv\u00e1\u0159\u00ed z\u00e1vity nikoli obr\u00e1b\u011bn\u00edm, kdy se z materi\u00e1lu odv\u00e1d\u00ed t\u0159\u00edska, ale postupem tv\u00e1\u0159en\u00ed za studena. Tv\u00e1\u0159en\u00fd materi\u00e1l je zde pod tlakem n\u00e1stroje podroben tvarov\u00e9 deformaci, kter\u00e1 zajist\u00ed jeho po\u017eadovan\u00e9 rozm\u011bry a technick\u00e9 parametry. Tyto n\u00e1stroje z n\u00e1strojov\u00e9 uhl\u00edkov\u00e9 oceli snesou p\u0159i dodr\u017eov\u00e1n\u00ed stanoven\u00fdch pracovn\u00edch […]","datePublished":"2020-10-30","dateModified":"2020-10-30","author":{"@type":"Person","@id":"https:\/\/www.rejza.cz\/author\/#Person","name":"","url":"https:\/\/www.rejza.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/383247cd769f7ac317a5bcda943ec48a3c79d996598ae4564ec21a0e178126d1?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/383247cd769f7ac317a5bcda943ec48a3c79d996598ae4564ec21a0e178126d1?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"rejza.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.rejza.cz\/wp-content\/uploads\/z%C3%A1vitn%C3%ADk%20v%20hlavici.jpg","url":"https:\/\/www.rejza.cz\/wp-content\/uploads\/z%C3%A1vitn%C3%ADk%20v%20hlavici.jpg","height":0,"width":0},"url":"https:\/\/www.rejza.cz\/kde-se-uplatni-tvareci-zavitnik\/","about":["V\u00fdrobky"],"wordCount":442,"articleBody":"   Tv\u00e1\u0159ec\u00ed z\u00e1vitn\u00edky I-nastroje jsou ve stroj\u00edrenstv\u00ed specifickou kategori\u00ed v\u00fdroby \u0161roubov\u00fdch spoj\u016f. Vytv\u00e1\u0159\u00ed z\u00e1vity nikoli obr\u00e1b\u011bn\u00edm, kdy se z materi\u00e1lu odv\u00e1d\u00ed t\u0159\u00edska, ale postupem tv\u00e1\u0159en\u00ed za studena. Tv\u00e1\u0159en\u00fd materi\u00e1l je zde pod tlakem n\u00e1stroje podroben tvarov\u00e9 deformaci, kter\u00e1 zajist\u00ed jeho po\u017eadovan\u00e9 rozm\u011bry a technick\u00e9 parametry.Tyto n\u00e1stroje z n\u00e1strojov\u00e9 uhl\u00edkov\u00e9 oceli snesou p\u0159i dodr\u017eov\u00e1n\u00ed stanoven\u00fdch pracovn\u00edch postup\u016f dlouhodob\u00e9 nam\u00e1h\u00e1n\u00ed, zejm\u00e9na ve velkos\u00e9riov\u00e9 v\u00fdrob\u011b. Pr\u00e1v\u011b pro velk\u00e9 mno\u017estv\u00ed obrobk\u016f je tento zp\u016fsob vhodn\u00fd, p\u0159i\u010dem\u017e se v\u00fdroba z\u00e1vit\u016f m\u016f\u017ee uskute\u010dnit s men\u0161\u00edmi n\u00e1klady, ve srovn\u00e1n\u00ed s klasick\u00fdmi \u0159ezn\u00fdmi z\u00e1vitn\u00edky.Podm\u00ednky pro vyu\u017eit\u00ed tv\u00e1\u0159ec\u00edho z\u00e1vitn\u00edkuPr\u016fm\u011br p\u0159edvrt\u00e1van\u00e9ho otvoru \u2013 je nutn\u00e9 dr\u017eet se doporu\u010den\u00ed v\u00fdrobc\u016f tv\u00e1\u0159ec\u00edch z\u00e1vitn\u00edk\u016f, zejm\u00e9na s ohledem na velikost p\u0159edvrt\u00e1van\u00e9ho otvoru. Ten mus\u00ed b\u00fdt v\u017edy v\u011bt\u0161\u00ed, ne\u017e jak\u00fd je p\u0159i zhotoven\u00ed z\u00e1vitu t\u0159\u00edskov\u00fdm zp\u016fsobem. Pr\u016fm\u011bry p\u0159edvrt\u00e1van\u00fdch otvor\u016f by m\u011bly b\u00fdt k nahl\u00e9dnut\u00ed v p\u0159ilo\u017een\u00fdch tabulk\u00e1ch.Slep\u00e9 (nepr\u016fchoz\u00ed) otvory v obrobc\u00edch \u2013 nev\u00fdhodou \u0159ezn\u00fdch z\u00e1vitn\u00edk\u016f je nutnost odv\u00e1d\u011bt t\u0159\u00edsku, co\u017e znesnad\u0148uje proces v\u00fdroby z\u00e1vit\u016f v nepr\u016fchoz\u00edch otvorech. Pr\u00e1v\u011b pro tyto \u00fa\u010dely jsou tv\u00e1\u0159ec\u00ed n\u00e1stroje ide\u00e1ln\u00ed. Z\u00e1vit lze zhotovit po cel\u00e9 d\u00e9lce slep\u00e9 d\u00edry velmi rychle a efektivn\u011b, a to jak v s\u00e9riov\u00e9, tak i kusov\u00e9 v\u00fdrob\u011b.Materi\u00e1l \u2013 jednotliv\u00e9 typy tv\u00e1\u0159ec\u00edch n\u00e1stroj\u016f se mohou li\u0161it s ohledem na \u017eivotnost a vyu\u017eiteln\u00e9 materi\u00e1ly. Obvykle se t\u00edmto zp\u016fsobem zpracov\u00e1v\u00e1 uhl\u00edkov\u00e1 konstruk\u010dn\u00ed \u010di automatov\u00e1 ocel, speci\u00e1ln\u00ed oceli \u017e\u00e1ruvzdorn\u00e9 a \u017e\u00e1rupevn\u00e9 legovan\u00e9 niklem, chromniklov\u00e9 nerezov\u00e9 oceli, hlin\u00edk a jeho slitiny, m\u011b\u010f a jej\u00ed slitiny.Vznikaj\u00edc\u00ed t\u0159en\u00ed \u2013 podm\u00ednkou spr\u00e1vn\u00e9ho vyu\u017e\u00edv\u00e1n\u00ed n\u00e1stroj\u016f je dostate\u010dn\u00e9 chlazen\u00ed a maz\u00e1n\u00ed. Ji\u017e samotn\u00fd n\u00e1zev \u201etv\u00e1\u0159ec\u00ed\u201c napov\u00edd\u00e1, \u017ee jde v pr\u016fb\u011bhu pr\u00e1ce o velmi siln\u00e9 t\u0159ec\u00ed nam\u00e1h\u00e1n\u00ed, za doprovodn\u00e9ho vzniku tepla, \u010d\u00edm\u017e se m\u016f\u017ee \u017eivotnost n\u00e1stroje v\u00fdrazn\u011b zkr\u00e1tit. Proto je nutn\u00e9 dodr\u017eovat spr\u00e1vn\u00fd mazac\u00ed postup \u2013 tedy vyu\u017e\u00edt bu\u010f olej, anebo speci\u00e1ln\u00ed olejovou emulzi s vy\u0161\u0161\u00edm pod\u00edlem olejov\u00e9 slo\u017eky.                                                                                                                                                                                                                                                                                                                                                                                          3.7\/5 - (3 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Kde se uplatn\u00ed tv\u00e1\u0159ec\u00ed z\u00e1vitn\u00edk","item":"https:\/\/www.rejza.cz\/kde-se-uplatni-tvareci-zavitnik\/#breadcrumbitem"}]}]