[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.chnj.cz\/co-je-to-protahovaci-trn-a-k-cemu-slouzi\/#Article","mainEntityOfPage":"https:\/\/www.chnj.cz\/co-je-to-protahovaci-trn-a-k-cemu-slouzi\/","headline":"Co je to protahovac\u00ed trn a k \u010demu slou\u017e\u00ed","name":"Co je to protahovac\u00ed trn a k \u010demu slou\u017e\u00ed","description":"Ka\u017ed\u00fd vystudovan\u00fd stroja\u0159 by m\u011bl b\u00fdt obezn\u00e1men s t\u00edm, co je to protahovac\u00ed trn https:\/\/www.i-nastroje.cz\/protahovaci-trny a k \u010demu je zapot\u0159eb\u00ed. Jestli\u017ee se ov\u0161em budete pt\u00e1t lid\u00ed, kte\u0159\u00ed jsou od stroja\u0159iny sv\u00fdmi pracovn\u00edmi \u010di studijn\u00edmi obory na hony vzd\u00e1leni, ti si mohou tyto sv\u00e9r\u00e1zn\u00e9 pom\u016fcky p\u0159edstavovat po sv\u00e9m. T\u0159eba jim bude n\u00e1zev p\u0159ipom\u00ednat pichlav\u00e9 trny r\u016f\u017e\u00ed ... <a href=\"https:\/\/www.chnj.cz\/co-je-to-protahovaci-trn-a-k-cemu-slouzi\/\" class=\"more-link\">P\u0159e\u010d\u00edst<span class=\"screen-reader-text\"> \"Co je to protahovac\u00ed trn a k \u010demu slou\u017e\u00ed\"<\/span> &raquo;<\/a>","datePublished":"2024-12-20","dateModified":"2024-12-20","author":{"@type":"Person","@id":"https:\/\/www.chnj.cz\/author\/devene\/#Person","name":"devene","url":"https:\/\/www.chnj.cz\/author\/devene\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/bbaa4e9a58aac4329fe0ade0f3fb816f09f0dc43c21f6e884dccfbc124b16b29?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/bbaa4e9a58aac4329fe0ade0f3fb816f09f0dc43c21f6e884dccfbc124b16b29?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"chnj.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.chnj.cz\/wp-content\/uploads\/industrial-1218153_640_3.jpg","url":"https:\/\/www.chnj.cz\/wp-content\/uploads\/industrial-1218153_640_3.jpg","height":0,"width":0},"url":"https:\/\/www.chnj.cz\/co-je-to-protahovaci-trn-a-k-cemu-slouzi\/","about":["V\u00fdrobky"],"wordCount":403,"articleBody":"      Ka\u017ed\u00fd vystudovan\u00fd stroja\u0159 by m\u011bl b\u00fdt obezn\u00e1men s t\u00edm, co je to protahovac\u00ed trn https:\/\/www.i-nastroje.cz\/protahovaci-trny a k \u010demu je zapot\u0159eb\u00ed. Jestli\u017ee se ov\u0161em budete pt\u00e1t lid\u00ed, kte\u0159\u00ed jsou od stroja\u0159iny sv\u00fdmi pracovn\u00edmi \u010di studijn\u00edmi obory na hony vzd\u00e1leni, ti si mohou tyto sv\u00e9r\u00e1zn\u00e9 pom\u016fcky p\u0159edstavovat po sv\u00e9m. T\u0159eba jim bude n\u00e1zev p\u0159ipom\u00ednat pichlav\u00e9 trny r\u016f\u017e\u00ed nebo ak\u00e1tov\u00fdch v\u011btv\u00ed, zvl\u00e1\u0161t\u011b pak pokud jim neprozrad\u00edte, v jak\u00e9m oboru lidsk\u00e9 \u010dinnosti se s \u201eprotahov\u00e1ky\u201c mohou setkat.Protahovac\u00ed trny jsou velmi sv\u00e9r\u00e1zn\u00e9 obr\u00e1b\u011bc\u00ed n\u00e1stroje. Po\u010d\u00edt\u00e1 se s nimi u v\u00fdrobn\u00edch operac\u00ed, kter\u00e9 jejich sv\u00e9r\u00e1znost vysloven\u011b podtrhnou.Obt\u00ed\u017en\u011b vyrobiteln\u00e9 vnit\u0159n\u00ed otvory \u2013 soustru\u017een\u00ed, vrt\u00e1n\u00ed a fr\u00e9zov\u00e1n\u00ed jsou ve stroj\u00edrenstv\u00ed nejroz\u0161\u00ed\u0159en\u011bj\u0161\u00edmi obr\u00e1b\u011bc\u00edmi procesy a znaj\u00ed je i mnoz\u00ed lid\u00e9 bez stroj\u00edrensk\u00e9ho vzd\u011bl\u00e1n\u00ed, kup\u0159\u00edkladu na soustruhu zhotov\u00edte osov\u011b soum\u011brn\u00e9 v\u00e1lcov\u00e9 tvary, na fr\u00e9zce naopak tvary rovn\u00e9 a ploch\u00e9, a vrta\u010dku jist\u011b nen\u00ed t\u0159eba nikomu p\u0159edstavovat. Jen\u017ee co kdy\u017e po v\u00e1s n\u011bkdo po\u017eaduje zhotoven\u00ed pravideln\u00e9ho \u010di dokonce nepravideln\u00e9ho vnit\u0159n\u00edho tvaru, nap\u0159\u00edklad sedmic\u00edp\u00e9 hv\u011bzdy \u010di p\u016flm\u011bs\u00edce. Nemus\u00edme ale pro zaj\u00edmav\u00fd p\u0159\u00edklad z praxe chodit p\u0159\u00edli\u0161 daleko, protahovac\u00edmi trny se vyr\u00e1b\u00ed to, co m\u00e1 doma ka\u017ed\u00fd \u2013 patentn\u00ed vlo\u017eky z mosazn\u00e9ho kovu do dve\u0159n\u00edho z\u00e1mku. Velkos\u00e9riov\u00e1 v\u00fdroba \u2013 zhotoven\u00ed slo\u017eit\u00fdch tvar\u016f r\u016fzn\u00fdch otvor\u016f pomoc\u00ed protahovac\u00edho trnu se vypl\u00e1c\u00ed pouze tam, kde jde o velk\u00e9 v\u00fdrobn\u00ed s\u00e9rie. Protahovac\u00ed trn se v\u00e1m toti\u017e mus\u00ed zaplatit, proto\u017ee jeho cena je vzhledem k jeho slo\u017eitosti zna\u010dn\u00e1. Toto je v podstat\u011b jedin\u00e9 \u00faskal\u00ed a z\u00e1rove\u0148 podm\u00ednka k \u00fasp\u011bchu s vyu\u017eit\u00edm a rentabilitou protahovac\u00edch trn\u016f, tyto n\u00e1stroje ale tak\u00e9 d\u00edky velk\u00fdm s\u00e9ri\u00edm sni\u017euj\u00ed cenu zhotovovan\u00fdch obrobk\u016f, pova\u017ete t\u0159eba pr\u00e1v\u011b takov\u00e9 vlo\u017eky do z\u00e1mk\u016f, kter\u00e9 po\u0159\u00edd\u00edte za p\u00e1r des\u00edtek korun (pokud si odmysl\u00edte n\u011bkter\u00e1 speci\u00e1ln\u00ed bezpe\u010dnostn\u00ed zamyk\u00e1n\u00ed).                                                                                                                                                                                                                                                                                                                                                                                                   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