[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.krusis.cz\/k-cemu-vyuzijete-protahovaci-trny\/#Article","mainEntityOfPage":"https:\/\/www.krusis.cz\/k-cemu-vyuzijete-protahovaci-trny\/","headline":"K \u010demu vyu\u017eijete protahovac\u00ed trny","name":"K \u010demu vyu\u017eijete protahovac\u00ed trny","description":"P\u0159edstavte si situaci, \u017ee pot\u0159ebujete d\u016fkladn\u011b vy\u010distit vnit\u0159ek n\u011bjak\u00e9 trubi\u010dky, t\u0159eba.","datePublished":"2021-10-16","dateModified":"2021-10-16","author":{"@type":"Person","@id":"https:\/\/www.krusis.cz\/author\/#Person","name":"","url":"https:\/\/www.krusis.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/390ba47df5874845ef3762ac16ecd0a67f4e30c13cbb7c7ee444ade303aa885b?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/390ba47df5874845ef3762ac16ecd0a67f4e30c13cbb7c7ee444ade303aa885b?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"krusis.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.krusis.cz\/wp-content\/uploads\/key-3348307_640.jpg","url":"https:\/\/www.krusis.cz\/wp-content\/uploads\/key-3348307_640.jpg","height":0,"width":0},"url":"https:\/\/www.krusis.cz\/k-cemu-vyuzijete-protahovaci-trny\/","about":["Hry"],"wordCount":395,"articleBody":"   P\u0159edstavte si situaci, \u017ee pot\u0159ebujete d\u016fkladn\u011b vy\u010distit vnit\u0159ek n\u011bjak\u00e9 trubi\u010dky, t\u0159eba hlave\u0148 malor\u00e1\u017eky, co ud\u011bl\u00e1te? Pravd\u011bpodobn\u011b s\u00e1hnete po n\u011bjak\u00e9m n\u00e1stroji, nap\u0159. had\u0159\u00edku nebo ty\u010di s kart\u00e1\u010dem, abyste se dostali dovnit\u0159, a abyste odstranili ne\u010distotu z vnit\u0159n\u00ed strany otvoru.Na podobn\u00e9m principu pracuj\u00ed protla\u010dovac\u00ed a protahovac\u00ed trny. Je to tak\u00e9 jak\u00fdsi pomocn\u00edk, kter\u00fdm se dost\u00e1v\u00e1te do n\u011bjak\u00e9ho p\u0159edvrtan\u00e9ho otvoru, jen s t\u00edm rozd\u00edlem, \u017ee se jedn\u00e1 o stroj\u00edrensk\u00fd speci\u00e1ln\u00ed n\u00e1stroj pro vytvo\u0159en\u00ed p\u0159esn\u00e9ho otvoru ur\u010dit\u00e9ho tvaru, velmi \u010dasto nekruhov\u00e9ho.Protahovac\u00ed trn sest\u00e1v\u00e1 z dlouh\u00e9 \u0159ady zub\u016f, kter\u00e9 ub\u00edraj\u00ed uvnit\u0159 obrobku t\u0159\u00edsku tak, aby posledn\u00ed zub vytvo\u0159il ji\u017e fin\u00e1ln\u00ed podobu a rozm\u011br. Velmi \u010dasto se jedn\u00e1 o dr\u00e1\u017eky obd\u00e9ln\u00edkov\u00e9ho pr\u016f\u0159ezu, ale i r\u016fzn\u00e9 nepravideln\u00e9 vnit\u0159n\u00ed tvary dr\u00e1\u017eek, kter\u00e9 byste jin\u00fdm zp\u016fsobem st\u011b\u017e\u00ed vyrobili. Jedn\u00edm z nejroz\u0161\u00ed\u0159en\u011bj\u0161\u00edch p\u0159\u00edklad\u016f vyu\u017eit\u00ed protahovac\u00edch trn\u016f je otvor v mosazn\u00e9 cylindrick\u00e9 vlo\u017ece patentn\u00edho z\u00e1mku.Protahov\u00e1ky, jak se jim lidov\u011b p\u0159ezd\u00edv\u00e1, jsou velmi specifick\u00e9 n\u00e1stroje, a kdo se stroj\u00edrenstv\u00edm nikdy nezab\u00fdval alespo\u0148 okrajov\u011b, st\u011b\u017e\u00ed si je dok\u00e1\u017ee p\u0159edstavit. Mnoz\u00ed z v\u00e1s ji\u017e v ruce n\u011bkdy dr\u017eeli vrt\u00e1k, fr\u00e9zu nebo soustru\u017enick\u00fd n\u016f\u017e, ale s protahov\u00e1kem se b\u011b\u017en\u011b \u010dlov\u011bk nesetk\u00e1. \u010c\u00edm je tento n\u00e1stroj sv\u00e9r\u00e1zn\u00fd?Je velmi drah\u00fd \u2013 vyrobit takov\u00fd n\u00e1stroj vy\u017eaduje n\u00e1ro\u010dn\u00fd, velmi n\u00e1ro\u010dn\u00fd proces, a proto je tak\u00e9 jeho cena velmi vysok\u00e1. P\u0159edpokl\u00e1d\u00e1 se toti\u017e, \u017ee bude slou\u017eit v s\u00e9riov\u00e9 v\u00fdrob\u011b, a \u017ee se tak\u00e9 jeho n\u00e1kup zaplat\u00ed po\u010dtem vyroben\u00fdch obrobk\u016f.Pro kusovou v\u00fdrobu nem\u00e1 p\u0159\u00edli\u0161 v\u00fdznam nechat vyrobit protahov\u00e1k, je to tedy z\u00e1le\u017eitost sp\u00ed\u0161e v\u011bt\u0161\u00edch provoz\u016f a kovov\u00fdroby, kde je zaji\u0161t\u011bn odbyt, a kde je jist\u00e9, \u017ee n\u00e1klady na v\u00fdrobn\u00ed prost\u0159edky nep\u0159ijdou vnive\u010d. Protahovac\u00ed trny se tak\u00e9 up\u00ednaj\u00ed do protahova\u010dek, tedy speci\u00e1ln\u00edch stroj\u016f, kter\u00e9 s nimi dok\u00e1\u017eou pracovat.                                                                                                                                                                                                                                                                                                                                                                                                  "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"K \u010demu vyu\u017eijete protahovac\u00ed trny","item":"https:\/\/www.krusis.cz\/k-cemu-vyuzijete-protahovaci-trny\/#breadcrumbitem"}]}]