[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.gopal.cz\/protahovaci-trny-pro-velkoseriovou-vyrobu-presnych-nepravidelnych-otvoru\/#Article","mainEntityOfPage":"https:\/\/www.gopal.cz\/protahovaci-trny-pro-velkoseriovou-vyrobu-presnych-nepravidelnych-otvoru\/","headline":"Protahovac\u00ed trny pro velkos\u00e9riovou v\u00fdrobu p\u0159esn\u00fdch nepravideln\u00fdch otvor\u016f","name":"Protahovac\u00ed trny pro velkos\u00e9riovou v\u00fdrobu p\u0159esn\u00fdch nepravideln\u00fdch otvor\u016f","description":"Stroj\u00edrenstv\u00ed je jeden z nejobt\u00ed\u017en\u011bj\u0161\u00edch u\u010debn\u00edch obor\u016f, u\u010d\u0148ov\u00e9 a studenti<span class=\"more-button\"><a href=\"https:\/\/www.gopal.cz\/protahovaci-trny-pro-velkoseriovou-vyrobu-presnych-nepravidelnych-otvoru\/\" class=\"more-link\">Pokra\u010dovat ve \u010dten\u00ed<span class=\"screen-reader-text\">Protahovac\u00ed trny pro velkos\u00e9riovou v\u00fdrobu p\u0159esn\u00fdch nepravideln\u00fdch otvor\u016f<\/span><\/a><\/span>","datePublished":"2021-02-22","dateModified":"2023-05-05","author":{"@type":"Person","@id":"https:\/\/www.gopal.cz\/author\/devene\/#Person","name":"devene","url":"https:\/\/www.gopal.cz\/author\/devene\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/5522eb0fc8481dea5f6519f6a0b15ee2c46358d48429b281fd7c49cbb5a929f9?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/5522eb0fc8481dea5f6519f6a0b15ee2c46358d48429b281fd7c49cbb5a929f9?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"gopal.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.gopal.cz\/wp-content\/uploads\/vnit%C5%99n%C3%AD%20ozuben%C3%AD.jpg","url":"https:\/\/www.gopal.cz\/wp-content\/uploads\/vnit%C5%99n%C3%AD%20ozuben%C3%AD.jpg","height":0,"width":0},"url":"https:\/\/www.gopal.cz\/protahovaci-trny-pro-velkoseriovou-vyrobu-presnych-nepravidelnych-otvoru\/","about":["V\u00fdrobky"],"wordCount":401,"articleBody":"       Stroj\u00edrenstv\u00ed je jeden z nejobt\u00ed\u017en\u011bj\u0161\u00edch u\u010debn\u00edch obor\u016f, u\u010d\u0148ov\u00e9 a studenti ji\u017e na st\u0159edn\u00edm stupni odborn\u00fdch \u0161kol mus\u00ed zvl\u00e1dnout a prok\u00e1zat krom\u011b teoretick\u00e9 p\u0159\u00edpravy i praktick\u00e9 dovednosti. Jedn\u00edm z prvn\u00edch n\u00e1stroj\u016f, s n\u00edm\u017e p\u0159ich\u00e1z\u00ed do styku, je vrt\u00e1k a brusn\u00e9 kotou\u010de a pozd\u011bji tak\u00e9 fr\u00e9za a soustru\u017enick\u00fd n\u016f\u017e. Nem\u011bli bychom ov\u0161em zapom\u00ednat ani na speci\u00e1ln\u00ed n\u00e1stroje pro velkos\u00e9riovou v\u00fdrobu, kam pat\u0159\u00ed i protla\u010dovac\u00ed a protahovac\u00ed trny.Protahov\u00e1ky a protla\u010dov\u00e1ky, jak se jim lidov\u011b p\u0159ezd\u00edv\u00e1, slou\u017e\u00ed k v\u00fdrob\u011b nej\u010dast\u011bji vnit\u0159n\u00edch otvor\u016f, kter\u00e9 by bylo jin\u00fdm zp\u016fsobem velmi obt\u00ed\u017en\u00e9 zhotovit a obr\u00e1b\u011bt. Jsou to r\u016fzn\u00e9 dr\u00e1\u017eky, nepravideln\u00e9 tvary, vnit\u0159n\u00ed ozuben\u00ed, otvory pr\u016f\u0159ezu \u010dtvercov\u00e9ho, obd\u00e9ln\u00edkov\u00e9ho nebo mnoho\u00faheln\u00edkov\u00e9ho.Jak takov\u00fd protahovac\u00ed trn vypad\u00e1 \u2013 je to n\u00e1stroj zhotoven\u00fd z n\u00e1strojov\u00e9 oceli t\u0159. 19, vp\u0159edu se nach\u00e1z\u00ed up\u00ednac\u00ed slot a vodic\u00ed \u010d\u00e1st, kter\u00e1 pronik\u00e1 ta\u017een\u00edm n\u00e1stroje do p\u0159edvrtan\u00e9ho (p\u0159\u00edpadn\u011b odl\u00e9van\u00e9ho) otvoru. Za n\u00ed je ji\u017e sled n\u011bkolika des\u00edtek zub\u016f, kter\u00e9 jsou mezi sebou odstup\u0148ov\u00e1ny tak, aby ka\u017ed\u00fd z nich odeb\u00edral z obrobku shodnou t\u0159\u00edsku. Fin\u00e1ln\u00ed zub na konci ozuben\u00e9 \u0159ady ji\u017e zhotovuje kone\u010dn\u00fd p\u0159esn\u00fd po\u017eadovan\u00fd rozm\u011br a tvar.S\u00e9riov\u00e1 v\u00fdroba \u2013 jist\u011b si domysl\u00edte, \u017ee jde o n\u00e1stroj velmi specifick\u00fd, a zcela nevhodn\u00fd pro kusovou v\u00fdrobu. Ceny protahovac\u00edch trn\u016f I-n\u00e1stroje se pohybuj\u00ed v \u0159\u00e1du tis\u00edc\u016f a\u017e des\u00edtek tis\u00edc korun, t\u00edm p\u00e1dem jsou ur\u010deny z d\u016fvodu rentability pro s\u00e9riovou v\u00fdrobu r\u016fzn\u00fdch sou\u010d\u00e1stek, jako jsou nap\u0159. ozuben\u00e1 kola, dr\u00e1\u017ekov\u00e9 spoje, patentn\u00ed z\u00e1mky, komponenty pro leteck\u00fd a automobilov\u00fd pr\u016fmysl, d\u00edly pro v\u00fdrobu dom\u00e1c\u00edch spot\u0159ebi\u010d\u016f, kde po\u010det vyroben\u00fdch obrobk\u016f p\u0159esahuje statis\u00edce a\u017e miliony kus\u016f ro\u010dn\u011b.Vysok\u00e1 p\u0159esnost \u2013 protahovac\u00ed trny jsou n\u00e1stroje dosahuj\u00edc\u00ed vysok\u00e9 p\u0159esnosti v\u00fdroby, zhotoven\u00fd otvor nen\u00ed nutn\u00e9 d\u00e1le obr\u00e1b\u011bt a upravovat, t\u00edm p\u00e1dem tak\u00e9 roste produktivita pr\u00e1ce a kles\u00e1 po\u010det zmetk\u016f na minimum.                                                                                                                                                                                                                                                                                                                                                                                          4.3\/5 - (15 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Protahovac\u00ed trny pro velkos\u00e9riovou v\u00fdrobu p\u0159esn\u00fdch nepravideln\u00fdch otvor\u016f","item":"https:\/\/www.gopal.cz\/protahovaci-trny-pro-velkoseriovou-vyrobu-presnych-nepravidelnych-otvoru\/#breadcrumbitem"}]}]