[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.j-z-m.cz\/vyroba-kruhovych-otvoru-ve-strojirenstv\/#Article","mainEntityOfPage":"https:\/\/www.j-z-m.cz\/vyroba-kruhovych-otvoru-ve-strojirenstv\/","headline":"V\u00fdroba kruhov\u00fdch otvor\u016f ve stroj\u00edrenstv","name":"V\u00fdroba kruhov\u00fdch otvor\u016f ve stroj\u00edrenstv","description":"Stroj\u00edrenstv\u00ed je nejstar\u0161\u00edm oborem lidsk\u00e9 \u010dinnosti, kter\u00fd \u00fazce souvis\u00ed s n\u00e1stupem pr\u016fmyslov\u00e9 revoluce v devaten\u00e1ct\u00e9m stolet\u00ed. Vzpome\u0148me kup\u0159\u00edkladu film Mare\u010dku podejte mi pero, kde se […]","datePublished":"2024-09-14","dateModified":"2024-09-14","author":{"@type":"Person","@id":"https:\/\/www.j-z-m.cz\/author\/#Person","name":"","url":"https:\/\/www.j-z-m.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/e32c915fa5b274a4469e3ef5c1f9837e76577a60613858c5c8a74a3de98e33bc?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/e32c915fa5b274a4469e3ef5c1f9837e76577a60613858c5c8a74a3de98e33bc?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"j-z-m.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.j-z-m.cz\/wp-content\/uploads\/technical-drawing-3324368_640_10_7.jpg","url":"https:\/\/www.j-z-m.cz\/wp-content\/uploads\/technical-drawing-3324368_640_10_7.jpg","height":0,"width":0},"url":"https:\/\/www.j-z-m.cz\/vyroba-kruhovych-otvoru-ve-strojirenstv\/","about":["N\u00e1kupy"],"wordCount":404,"articleBody":"      Stroj\u00edrenstv\u00ed je nejstar\u0161\u00edm oborem lidsk\u00e9 \u010dinnosti, kter\u00fd \u00fazce souvis\u00ed s n\u00e1stupem pr\u016fmyslov\u00e9 revoluce v devaten\u00e1ct\u00e9m stolet\u00ed. Vzpome\u0148me kup\u0159\u00edkladu film Mare\u010dku podejte mi pero, kde se pan Kemr zmi\u0148uje o stolet\u00ed p\u00e1ry, kdy parn\u00ed stroj za\u010dal v\u00fdrazn\u011b m\u011bnit d\u011bjiny lidstva p\u0159i vyu\u017e\u00edv\u00e1n\u00ed \u017eelezni\u010dn\u00ed dopravy.Stroja\u0159i se ji\u017e v t\u00e9 dob\u011b pot\u00fdkali s mnoha v\u00fdzvami, jak vyr\u00e1b\u011bt slo\u017eit\u00e9 stroje, jimi\u017e byly nap\u0159\u00edklad parn\u00ed lokomotivy. Tam se tak\u00e9 mimo jin\u00e9 \u0159e\u0161ilo, jak zhotovit velmi p\u0159esn\u00fd otvor v p\u00edstu pro ojnici, kter\u00e1 rozt\u00e1\u010dela kola parn\u00ed lokomotivy. Kdybyste toti\u017e po\u017eili pouh\u00fd vrt\u00e1k, otvor by byl natolik nep\u0159esn\u00fd, \u017ee by se pohyb p\u00edstu zastavil \u2013 p\u00edst by se jednodu\u0161e zasekl vlivem hrub\u00e9ho povrchu a excentrick\u00e9ho otvoru. Muselo se na to j\u00edt jinak a p\u0159ij\u00edt na to, \u010d\u00edm p\u0159edvrtan\u00fd otvor zp\u0159esnit.A tak vznikly prvn\u00ed v\u00fdhrubn\u00edky a v\u00fdstru\u017en\u00edky.Tyto n\u00e1stroje si m\u016f\u017eeme p\u0159edstavit jako dokonalej\u0161\u00ed vrt\u00e1ky, ov\u0161em s odli\u0161nou konstrukc\u00ed. Nemaj\u00ed ji\u017e pouh\u00e9 dva protilehl\u00e9 b\u0159ity, jako m\u00e1 vrt\u00e1k, n\u00fdbr\u017e jde o v\u00edceb\u0159it\u00fd n\u00e1stroj. \u010c\u00edm v\u00edce b\u0159it\u016f po obvodu n\u00e1stroje, t\u00edm jeho p\u0159esn\u011bj\u0161\u00ed veden\u00ed otvorem a tedy i p\u0159esn\u011bj\u0161\u00ed rozm\u011br, https:\/\/www.databazeknih.cz\/knihy\/paty-rozmer-43647  kruhovitost a jemnost povrchu. Kup\u0159\u00edkladu staviteln\u00fd v\u00fdstru\u017en\u00edk je natolik p\u0159esn\u00fd n\u00e1stroj, \u017ee s n\u00edm lze vyrobit velmi hladk\u00fd, rozm\u011brov\u011b p\u0159esn\u00fd a kruhov\u00fd otvor, kter\u00fd slou\u017e\u00ed pro pohyb sou\u010d\u00e1st\u00ed, jako jsou leteck\u00e9 a automobilov\u00e9 motory. St\u011b\u017e\u00ed si dovedeme dnes \u017eivot p\u0159edstavit bez v\u00fdstru\u017en\u00edk\u016f, proto\u017ee kdyby neexistovaly, neznali bychom ani auta, ani letadla, autobusy, tramvaje, trolejbusy, vlaky a dokonce ani j\u00edzdn\u00ed kola. Chodili bychom v jednadvac\u00e1t\u00e9m stolet\u00ed p\u011b\u0161ky nebo bychom zap\u0159ahali za d\u0159ev\u011bn\u00e9 \u017eeb\u0159i\u0148\u00e1ky kon\u011b a kr\u00e1vy. Mo\u017en\u00e1 by to byl \u017eivot zdrav\u011bj\u0161\u00ed, proto\u017ee by se lid\u00e9 museli v\u00edce h\u00fdbat, co\u017e by ka\u017ed\u00e9mu jedinci nepochybn\u011b prosp\u011blo, ale sv\u00fdm zp\u016fsobem bychom se vr\u00e1tili do st\u0159edov\u011bku, co\u017e ale nen\u00ed na\u0161\u00edm c\u00edlem vzhledem k pozn\u00e1n\u00ed, jak\u00e9 ji\u017e m\u00e1 lidstvo k dispozici.                                                                                                                                                                                                                                                                                                                                                                                                   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