[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.tapomat.cz\/znate-protahovaci-trny\/#Article","mainEntityOfPage":"https:\/\/www.tapomat.cz\/znate-protahovaci-trny\/","headline":"Zn\u00e1te protahovac\u00ed trny","name":"Zn\u00e1te protahovac\u00ed trny","description":"Lidsk\u00fd \u017eivot je v sou\u010dasn\u00e9 dob\u011b protk\u00e1n mnoha odv\u011btv\u00edmi techniky. Technick\u00fd rozvoj zaznamenal za posledn\u00edch sto let tak neobvykle rychl\u00fd…","datePublished":"2022-12-26","dateModified":"2023-05-03","author":{"@type":"Person","@id":"https:\/\/www.tapomat.cz\/author\/devene\/#Person","name":"devene","url":"https:\/\/www.tapomat.cz\/author\/devene\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/b72fc1bf1bf254b4118ef99c1da35a199f5a8e7c33c2166eae92618994df57ea?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/b72fc1bf1bf254b4118ef99c1da35a199f5a8e7c33c2166eae92618994df57ea?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"tapomat.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.tapomat.cz\/wp-content\/uploads\/lock-g9d490c73b_640.jpg","url":"https:\/\/www.tapomat.cz\/wp-content\/uploads\/lock-g9d490c73b_640.jpg","height":0,"width":0},"url":"https:\/\/www.tapomat.cz\/znate-protahovaci-trny\/","about":["N\u00e1kupy"],"wordCount":427,"articleBody":"   Lidsk\u00fd \u017eivot je v sou\u010dasn\u00e9 dob\u011b protk\u00e1n mnoha odv\u011btv\u00edmi techniky. Technick\u00fd rozvoj zaznamenal za posledn\u00edch sto let tak neobvykle rychl\u00fd pokrok, \u017ee by se dalo \u0159\u00edci, \u017ee v\u011bt\u0161ina lid\u00ed na to nen\u00ed p\u0159ipravena. D\u011bti ve \u0161kol\u00e1ch se jen st\u011b\u017e\u00ed sezn\u00e1m\u00ed s n\u011bkter\u00fdmi z\u00e1kladn\u00edmi technick\u00fdmi principy a ani v dosp\u011blosti tomu nen\u00ed na\u0161e spole\u010dnost v\u00fdrazn\u011b naklon\u011bna. V\u011bt\u0161ina technick\u00fdch obor\u016f je pro laickou ve\u0159ejnost zapov\u011bzena a st\u00e1v\u00e1 se, \u017ee si jen st\u011b\u017e\u00ed porozum\u00ed, co se t\u00fd\u010de odborn\u00e9 p\u0159\u00edpravy, instalat\u00e9r s chovatelem papou\u0161k\u016f.T\u00edmto v\u00e1m chceme nazna\u010dit, \u017ee bychom se m\u011bli sna\u017eit o v\u011bt\u0161\u00ed osv\u011btu mezi \u0161irokou ve\u0159ejnost\u00ed a nam\u00edsto konkuren\u010dn\u00edho boje se zam\u011b\u0159it na spolupr\u00e1ci, aby mezi lidmi rostlo v\u011bt\u0161\u00ed pov\u011bdom\u00ed o v\u0161ech oborech lidsk\u00e9 \u010dinnosti. Jako jeden z p\u0159\u00edklad\u016f bychom mohli pou\u017e\u00edt stroj\u00edrenstv\u00ed.Co je to soustruh anebo vrta\u010dka, si dok\u00e1\u017ee p\u0159edstavit leckdo, ale o existenci protahovac\u00edch trn\u016f v\u00ed jen zasv\u011bcen\u00ed odborn\u00edci. A pochopiteln\u011b studenti st\u0159edn\u00fdch odborn\u00fdch \u0161kol a u\u010dili\u0161\u0165 a vysok\u00fdch \u0161kol se stroj\u00edrensk\u00fdm zam\u011b\u0159en\u00edm.Protahovac\u00ed trn je speci\u00e1ln\u00ed n\u00e1stroj s mnoha b\u0159ity, s n\u00edm\u017e se vytv\u00e1\u0159\u00ed otvory v kovov\u00fdch obrobc\u00edch, kter\u00e9 zauj\u00edmaj\u00ed neobvykl\u00fd tvar. Ty mohou b\u00fdt i osov\u011b nesoum\u011brn\u00e9 a velmi rozmanit\u00e9 a jedn\u00edm z p\u0159\u00edklad\u016f t\u011bchto v\u00fdrobk\u016f jsou vlo\u017eky do patentn\u00edch dve\u0159n\u00edch z\u00e1mk\u016f, kter\u00e9 mnoz\u00ed z v\u00e1s znaj\u00ed pod zna\u010dkou FAB. Obr\u00e1b\u011bn\u00ed prob\u00edh\u00e1 tak, \u017ee trn je protahov\u00e1n p\u0159edvrtan\u00fdm otvorem a ka\u017ed\u00fd z jeho zub\u016f postupn\u011b odeb\u00edr\u00e1 z obrobku t\u0159\u00edsku, a\u017e ten posledn\u00ed zub dokon\u010d\u00ed fin\u00e1ln\u00ed operaci.Protahovac\u00ed trny se uplatn\u00ed v\u0161ude, kde je obt\u00ed\u017en\u00e9 zhotovit slo\u017eit\u00e9 tvary vnit\u0159n\u00edch otvor\u016f b\u011b\u017en\u00fdm obr\u00e1b\u011bn\u00edm, nap\u0159. vrt\u00e1n\u00edm, vyhrubov\u00e1n\u00edm a vystru\u017eov\u00e1n\u00edm nebo soustru\u017een\u00edm. M\u00e1 to ale jeden h\u00e1\u010dek, vyrobit protahovac\u00ed trn je toti\u017e velmi n\u00e1ro\u010dn\u00e9 a to tak\u00e9 odpov\u00edd\u00e1 jeho cen\u011b. Aby se \u201eprotahov\u00e1k\u201c vyplatil, muselo by j\u00edt o velkos\u00e9riovou v\u00fdrobu. Kup\u0159\u00edkladu u vlo\u017eek do z\u00e1mk\u016f pro patentn\u00ed kl\u00ed\u010de je to celkem pochopiteln\u00e9, t\u011bch se vyr\u00e1b\u00ed statis\u00edce a\u017e miliony.                                                                                                                                                                                                                                                                                                                                                                                                  "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Zn\u00e1te protahovac\u00ed trny","item":"https:\/\/www.tapomat.cz\/znate-protahovaci-trny\/#breadcrumbitem"}]}]