[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.betaol.cz\/protahovacim-trnem-se-vyrabi-napriklad-vlozky-pro-klice-do-dverniho-zamku\/#Article","mainEntityOfPage":"https:\/\/www.betaol.cz\/protahovacim-trnem-se-vyrabi-napriklad-vlozky-pro-klice-do-dverniho-zamku\/","headline":"Protahovac\u00edm trnem se vyr\u00e1b\u00ed nap\u0159\u00edklad vlo\u017eky pro kl\u00ed\u010de do dve\u0159n\u00edho z\u00e1mku","name":"Protahovac\u00edm trnem se vyr\u00e1b\u00ed nap\u0159\u00edklad vlo\u017eky pro kl\u00ed\u010de do dve\u0159n\u00edho z\u00e1mku","description":"Studenti st\u0159edn\u00edch pr\u016fmyslov\u00fdch \u0161kol se stroj\u00edrensk\u00fdm zam\u011b\u0159en\u00edm se ve druh\u00e9m a t\u0159et\u00edm ro\u010dn\u00edku seznamuj\u00ed podrobn\u011bji s v\u00fdrobn\u00edmi n\u00e1stroji. Jedn\u00edm z nich je i protahovac\u00ed trn. A\u010dkoli pr\u00e1v\u011b vy nemus\u00edte b\u00fdt zrovna stroja\u0159i, zkuste sami sob\u011b polo\u017eit ot\u00e1zku: \u201eJak bychom vyrobili otvor, kter\u00fd nen\u00ed osov\u011b soum\u011brn\u00fd,...","datePublished":"2021-01-28","dateModified":"2023-05-06","author":{"@type":"Person","@id":"https:\/\/www.betaol.cz\/author\/#Person","name":"","url":"https:\/\/www.betaol.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/b653a05acc9928bc50547a0b6ed51698115bbf59840455a4bc9d337f928ec9d6?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/b653a05acc9928bc50547a0b6ed51698115bbf59840455a4bc9d337f928ec9d6?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"betaol.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.betaol.cz\/wp-content\/uploads\/kl%C3%AD%C4%8D%20v%20z%C3%A1mku.jpg","url":"https:\/\/www.betaol.cz\/wp-content\/uploads\/kl%C3%AD%C4%8D%20v%20z%C3%A1mku.jpg","height":0,"width":0},"url":"https:\/\/www.betaol.cz\/protahovacim-trnem-se-vyrabi-napriklad-vlozky-pro-klice-do-dverniho-zamku\/","about":["N\u00e1kupy"],"wordCount":381,"articleBody":"      Studenti st\u0159edn\u00edch pr\u016fmyslov\u00fdch \u0161kol se stroj\u00edrensk\u00fdm zam\u011b\u0159en\u00edm se ve druh\u00e9m a t\u0159et\u00edm ro\u010dn\u00edku seznamuj\u00ed podrobn\u011bji s v\u00fdrobn\u00edmi n\u00e1stroji. Jedn\u00edm z nich je i protahovac\u00ed trn. A\u010dkoli pr\u00e1v\u011b vy nemus\u00edte b\u00fdt zrovna stroja\u0159i, zkuste sami sob\u011b polo\u017eit ot\u00e1zku: \u201eJak bychom vyrobili otvor, kter\u00fd nen\u00ed osov\u011b soum\u011brn\u00fd, a m\u00e1 r\u016fzn\u00e9 tvary nap\u0159. mnoho\u00faheln\u00edku, nepravideln\u00e9ho lichob\u011b\u017en\u00edku, troj\u00faheln\u00edku atp.? Na soustruhu to mo\u017en\u00e9 nebude, vrt\u00e1k nedoc\u00edl\u00ed ostr\u00fdch hran a tvarov\u00e1 fr\u00e9zka by u mal\u00fdch otvor\u016f musela b\u00fdt natolik mal\u00e1, \u017ee by bylo velmi komplikovan\u00e9 ji tudy v\u00e9st. P\u0159\u00edkladem takov\u00e9ho otvoru jsou cylindrick\u00e9 vlo\u017eky pro kl\u00ed\u010de.A pr\u00e1v\u011b zde nastupuje protahovac\u00ed trn I n\u00e1stroje. M\u016f\u017eete si jej p\u0159edstavit jako dlouh\u00fd \u00fazk\u00fd \u010di tenk\u00fd n\u00e1stroj z n\u00e1strojov\u00e9 uhl\u00edkov\u00e9 oceli, opat\u0159en\u00fd b\u0159ity, kter\u00e9 postupn\u011b odeb\u00edraj\u00ed z materi\u00e1lu t\u0159\u00edsku tak, aby posledn\u00ed b\u0159it doc\u00edlil ji\u017e po\u017eadovan\u00e9 fin\u00e1ln\u00ed podoby. Trny se protahuj\u00ed p\u0159edvrtan\u00fdm otvorem, p\u0159\u00edpadn\u011b jsou otvory ji\u017e sou\u010d\u00e1st\u00ed odlitku.Protahovac\u00ed trny se up\u00ednaj\u00ed do tzv. protahova\u010dky, tento stroj t\u00e1hne n\u00e1stroj nap\u0159\u00ed\u010d obrobkem pomoc\u00ed hydraulick\u00e9ho mechanismu zna\u010dnou silou. Existuj\u00ed tak\u00e9 protla\u010dovac\u00ed trny, kter\u00e9 nejsou otvorem ta\u017eeny, ale naopak postupn\u011b do otvoru zatla\u010dov\u00e1ny.Jist\u011b v\u00e1s napadne, \u017ee zhotovit takov\u00fd \u201eprotahov\u00e1k\u201c, jak se mu p\u0159ezd\u00edv\u00e1, nebude snadn\u00e9 a bude to velmi n\u00e1kladn\u00e9. Ceny trn\u016f jsou tak\u00e9 velmi vysok\u00e9 a mus\u00ed b\u00fdt proto n\u00e1le\u017eit\u011b produktivn\u00ed, aby se jejich v\u00fdroba v\u016fbec vyplatila. Proto se tak\u00e9 nasazuj\u00ed v s\u00e9riov\u00e9 v\u00fdrob\u011b, viz zmi\u0148ovan\u00e9 vlo\u017eky pro kl\u00ed\u010de, kter\u00fdch se vyrob\u00ed stovky tis\u00edc kus\u016f v pr\u016fb\u011bhu velmi kr\u00e1tk\u00e9ho \u010dasov\u00e9ho \u00faseku. Protahovac\u00ed trny se uplatn\u00ed ve stroj\u00edrensk\u00e9m oboru p\u0159i v\u00fdrob\u011b d\u00edl\u016f pro automobilov\u00fd a leteck\u00fd pr\u016fmysl, pro komponenty dom\u00e1c\u00edch spot\u0159ebi\u010d\u016f, elektroniky, n\u00e1bytku, spojovac\u00edch sou\u010d\u00e1st\u00ed a univerz\u00e1ln\u00edch v\u00fdrobk\u016f, kter\u00e9 se prod\u00e1vaj\u00ed nap\u0159. v hobbymarketech.                                                                                                                                                                                                                                                                                                                                                                                          4.5\/5 - (4 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Protahovac\u00edm trnem se vyr\u00e1b\u00ed nap\u0159\u00edklad vlo\u017eky pro kl\u00ed\u010de do dve\u0159n\u00edho z\u00e1mku","item":"https:\/\/www.betaol.cz\/protahovacim-trnem-se-vyrabi-napriklad-vlozky-pro-klice-do-dverniho-zamku\/#breadcrumbitem"}]}]