[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.allko.cz\/k-cemu-se-vam-hodi-protahovaci-trn\/#Article","mainEntityOfPage":"https:\/\/www.allko.cz\/k-cemu-se-vam-hodi-protahovaci-trn\/","headline":"K \u010demu se v\u00e1m hod\u00ed protahovac\u00ed trn","name":"K \u010demu se v\u00e1m hod\u00ed protahovac\u00ed trn","description":"Na v\u00e1noce se t\u011b\u0161\u00ed snad ka\u017ed\u00fd a jedn\u00edm z typick\u00fdch v\u00e1no\u010dn\u00edch symbol\u016f je i kr\u00e1jen\u00ed jablka nap\u0159\u00ed\u010d. Jakmile jej rozkroj\u00edte, obvykle se p\u0159ed v\u00e1mi zjev\u00ed d\u016fv\u011brn\u011b zn\u00e1m\u00fd obraz p\u011btic\u00edp\u00e9 hv\u011bzdy v podob\u011b j\u00e1d\u0159ince vypln\u011bn\u00e9ho drobn\u00fdmi hn\u011bd\u00fdmi sem\u00ednky. Je to \u00fachvatn\u00e9 d\u00edlo p\u0159\u00edrody, kter\u00e9 \u010dlov\u011bk nedok\u00e1\u017ee prozat\u00edm v\u016fbec napodobit, a pokud se o to sna\u017e\u00ed, tak jen v podob\u011b v\u00fdrobk\u016f z … ","datePublished":"2022-11-27","dateModified":"2023-05-02","author":{"@type":"Person","@id":"https:\/\/www.allko.cz\/author\/devene\/#Person","name":"devene","url":"https:\/\/www.allko.cz\/author\/devene\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/c065076eb86551fdb70725c8063acf1b60a8edaed14ed654228c4cba13121c83?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/c065076eb86551fdb70725c8063acf1b60a8edaed14ed654228c4cba13121c83?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"allko.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.allko.cz\/wp-content\/uploads\/apple-g26bb1f102_640.png","url":"https:\/\/www.allko.cz\/wp-content\/uploads\/apple-g26bb1f102_640.png","height":0,"width":0},"url":"https:\/\/www.allko.cz\/k-cemu-se-vam-hodi-protahovaci-trn\/","about":["Produkty"],"wordCount":434,"articleBody":"   Na v\u00e1noce se t\u011b\u0161\u00ed snad ka\u017ed\u00fd a jedn\u00edm z typick\u00fdch v\u00e1no\u010dn\u00edch symbol\u016f je i kr\u00e1jen\u00ed jablka nap\u0159\u00ed\u010d. Jakmile jej rozkroj\u00edte, obvykle se p\u0159ed v\u00e1mi zjev\u00ed d\u016fv\u011brn\u011b zn\u00e1m\u00fd obraz p\u011btic\u00edp\u00e9 hv\u011bzdy v podob\u011b j\u00e1d\u0159ince vypln\u011bn\u00e9ho drobn\u00fdmi hn\u011bd\u00fdmi sem\u00ednky. Je to \u00fachvatn\u00e9 d\u00edlo p\u0159\u00edrody, kter\u00e9 \u010dlov\u011bk nedok\u00e1\u017ee prozat\u00edm v\u016fbec napodobit, a pokud se o to sna\u017e\u00ed, tak jen v podob\u011b v\u00fdrobk\u016f z plastick\u00fdch hmot, d\u0159eva, skla, kamene, keramiky nebo kovu.Kdyby v\u00e1m n\u011bkdo zadal \u00fakol vyrobit takov\u00fd rozkrojen\u00fd j\u00e1d\u0159inec, resp. vytvo\u0159it p\u011btic\u00edpou hv\u011bzdu uvnit\u0159 ocelov\u00e9 desky nebo ty\u010de, jak byste to provedli? Jak\u00fd n\u00e1stroj byste pou\u017eili? Pro \u010dlov\u011bka, kter\u00fd se v technick\u00fdch oborech  https:\/\/www.fbi.vsb.cz\/cs\/studium-a-vyuka\/studijni-obory\/ neorientuje, to m\u016f\u017ee b\u00fdt velmi obt\u00ed\u017en\u00fd \u00fakol, ov\u0161em pro stroja\u0159e, co vystudoval alespo\u0148 st\u0159edn\u00ed \u0161kolu shodn\u00e9ho zam\u011b\u0159en\u00ed, je to celkem jednoduch\u00e9. Vyu\u017eijete tzv. protahovac\u00ed trn.Protahovac\u00ed trn neboli protahov\u00e1k, jak se mu slangov\u011b p\u0159ezd\u00edv\u00e1, je speci\u00e1ln\u00ed stroj\u00edrensk\u00fd n\u00e1stroj pro v\u00fdrobu vnit\u0159n\u00edch otvor\u016f, kter\u00e9 maj\u00ed velmi slo\u017eit\u00fd tvar, a nen\u00ed je t\u00e9m\u011b\u0159 nebo zcela re\u00e1ln\u00e9 vyrobit soustru\u017een\u00edm \u010di vrt\u00e1n\u00edm s vyhrubov\u00e1n\u00edm a vystru\u017eov\u00e1n\u00edm.V tomto p\u0159\u00edpad\u011b bude m\u00edt protahov\u00e1k v pr\u016f\u0159ezu tvar p\u011btic\u00edp\u00e9 hv\u011bzdy s t\u00edm, \u017ee p\u016fjde o soustavu odstup\u0148ovan\u00fdch zub\u016f, z nich\u017e ka\u017ed\u00fd postupn\u011b odebere t\u0159\u00edsku z obrobku a posledn\u00ed fin\u00e1ln\u00ed zub dokon\u010d\u00ed z\u00e1v\u011bre\u010dnou obr\u00e1b\u011bc\u00ed operaci tak, \u017ee nebude ji\u017e zapot\u0159eb\u00ed dal\u0161\u00edho obr\u00e1b\u011bc\u00edho n\u00e1stroje. Protahov\u00e1k zkr\u00e1tka vyrob\u00ed vnit\u0159n\u00ed otvor naprosto precizn\u011b a p\u0159esn\u011b.Mo\u017en\u00e1 v\u00e1s napad\u00e1, \u017ee takov\u00fd n\u00e1stroj mus\u00ed b\u00fdt pom\u011brn\u011b drah\u00fd, a m\u00e1te pravdu. Protahovac\u00ed trny pat\u0159\u00ed k nejdra\u017e\u0161\u00edm stroj\u00edrensk\u00fdm n\u00e1stroj\u016fm a jejich zhotoven\u00ed se tedy vypl\u00e1c\u00ed pouze pro s\u00e9riovou v\u00fdrobu. Muselo by tedy j\u00edt nap\u0159. pro tis\u00edce p\u011btic\u00edp\u00fdch hv\u011bzd, kter\u00e9 by se n\u011bkde uplatnily nap\u0159. v podob\u011b strojn\u00edch sou\u010d\u00e1st\u00ed nebo alespo\u0148 zaj\u00edmav\u00fdch dekorac\u00ed. Jedn\u00edm z p\u0159\u00edklad\u016f, kde se protahovac\u00ed trny v praxi opravdu uplatn\u00ed, jsou vnit\u0159n\u00ed patentn\u00ed vlo\u017eky do dve\u0159n\u00edch z\u00e1mk\u016f.                                                                                                                                                                                                                                                                                                                                                                                          4\/5 - (6 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"K \u010demu se v\u00e1m hod\u00ed protahovac\u00ed trn","item":"https:\/\/www.allko.cz\/k-cemu-se-vam-hodi-protahovaci-trn\/#breadcrumbitem"}]}]