[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.finarea.cz\/jak-zhotovit-ve-strojirenske-praxi-velmi-presne-valcove-otvory\/#Article","mainEntityOfPage":"https:\/\/www.finarea.cz\/jak-zhotovit-ve-strojirenske-praxi-velmi-presne-valcove-otvory\/","headline":"Jak zhotovit ve stroj\u00edrensk\u00e9 praxi velmi p\u0159esn\u00e9 v\u00e1lcov\u00e9 otvory","name":"Jak zhotovit ve stroj\u00edrensk\u00e9 praxi velmi p\u0159esn\u00e9 v\u00e1lcov\u00e9 otvory","description":"Stroj\u00edrenstv\u00ed bylo ji\u017e za socialismu v na\u0161\u00ed zemi jedn\u00edm z nejobt\u00ed\u017en\u011bj\u0161\u00edch obor\u016f, a kdo se hl\u00e1sil na st\u0159edn\u00ed odbornou \u0161kolu tohoto typu, musel po\u010d\u00edtat s hodinami str\u00e1ven\u00fdmi nad technick\u00fdmi v\u00fdkresy. Tehdy tak\u00e9 b\u00fdvalo zvykem posuzovat jin\u00fdm metrem budouc\u00ed stroja\u0159e, kte\u0159\u00ed doma sed\u011bli a\u017e dlouho do noci u r\u00fdsovac\u00edho stolu \u010di prkna, a jinak se d\u00edvat […]","datePublished":"2024-02-22","dateModified":"2024-03-22","author":{"@type":"Person","@id":"https:\/\/www.finarea.cz\/author\/#Person","name":"","url":"https:\/\/www.finarea.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/633c8fb9866a4b0403353760c35030d9478298d226363320d7bf91cdc3dbe3b6?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/633c8fb9866a4b0403353760c35030d9478298d226363320d7bf91cdc3dbe3b6?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"finarea.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.finarea.cz\/wp-content\/uploads\/drill-2148289_640_6.jpg","url":"https:\/\/www.finarea.cz\/wp-content\/uploads\/drill-2148289_640_6.jpg","height":0,"width":0},"url":"https:\/\/www.finarea.cz\/jak-zhotovit-ve-strojirenske-praxi-velmi-presne-valcove-otvory\/","about":["Zbo\u017e\u00ed"],"wordCount":415,"articleBody":"   Stroj\u00edrenstv\u00ed bylo ji\u017e za socialismu v na\u0161\u00ed zemi jedn\u00edm z nejobt\u00ed\u017en\u011bj\u0161\u00edch obor\u016f, a kdo se hl\u00e1sil na st\u0159edn\u00ed odbornou \u0161kolu tohoto typu, musel po\u010d\u00edtat s hodinami str\u00e1ven\u00fdmi nad technick\u00fdmi v\u00fdkresy. Tehdy tak\u00e9 b\u00fdvalo zvykem posuzovat jin\u00fdm metrem budouc\u00ed stroja\u0159e, kte\u0159\u00ed doma sed\u011bli a\u017e dlouho do noci u r\u00fdsovac\u00edho stolu \u010di prkna, a jinak se d\u00edvat na gymnazisty, kte\u0159\u00ed si v\u00fduku odbyli ji\u017e ve \u0161kole a doma m\u011bli spoustu \u010dasu na sv\u00e9 kon\u00ed\u010dky a z\u00e1jmy.Sou\u010d\u00e1st\u00ed stroja\u0159iny je tak\u00e9 schopnost posuzovat a odhadovat, jak se budou vyr\u00e1b\u011bt jednotliv\u00e9 sou\u010d\u00e1stky pro v\u00fdrobu dopravn\u00edch prost\u0159edk\u016f, stroj\u016f, dom\u00e1c\u00edch spot\u0159ebi\u010d\u016f, elektroniky, n\u00e1\u0159ad\u00ed a dal\u0161\u00edch v\u00fdrobk\u016f, a \u017ee to nen\u00ed snadn\u00e9, prokazuje i fakt, \u017ee jen m\u00e1lokdo z v\u00e1s, co stroja\u0159i nejste, v\u00ed, k \u010demu je zapot\u0159eb\u00ed ku\u017eelov\u00fd v\u00fdstru\u017en\u00edk.Kdybychom v\u00e1m (nestroja\u0159\u016fm) zadali do v\u00fdroby zhotoven\u00ed leteck\u00e9ho motoru, kde je p\u0159esnost d\u016fle\u017eit\u011bj\u0161\u00ed, ne\u017e kvantita, jak byste postupovali? Jak byste kup\u0159\u00edkladu zhotovovali velmi p\u0159esn\u00e9 v\u00e1lcov\u00e9 otvory? Pokud byste na to vzali klasick\u00fd vrt\u00e1k, otvor by byl sice relativn\u011b kruhov\u00fd, ale jeho excentricita a hrubost povrchu, a tak\u00e9 rozm\u011brov\u00e1 p\u0159esnost, by v\u00e1m nedaly sp\u00e1t. Zjistili byste, \u017ee s vrt\u00e1kem nepochod\u00edte, a p\u00e1trali byste d\u00e1l, co s t\u00edm. Nakonec byste se dovt\u00edpili, \u017ee vrt\u00e1kem pouze otvor p\u0159edvrt\u00e1te a pro fin\u00e1ln\u00ed operace pou\u017eijete nejprve v\u00fdhrubn\u00edk, a pot\u00e9 v\u00fdstru\u017en\u00edk.V\u00fdhrubn\u00edky a v\u00fdstru\u017en\u00edky jsou speci\u00e1ln\u00ed v\u00edceb\u0159it\u00e9 n\u00e1stroje, jsou konstruov\u00e1ny tak, aby jejich veden\u00ed obrobkem bylo velmi p\u0159esn\u00e9, aby nedoch\u00e1zelo k velk\u00e9 h\u00e1zivosti, co\u017e by vedlo k vytvo\u0159en\u00ed sp\u00ed\u0161e eliptick\u00e9ho ne\u017e kruhov\u00e9ho otvoru. V\u00edce b\u0159it\u016f tak\u00e9 m\u016f\u017ee obr\u00e1b\u011bt men\u0161\u00ed t\u0159\u00edsku a povrch obrobku sp\u00ed\u0161e hladit, t\u00edm p\u00e1dem se doc\u00edl\u00ed i velmi hladk\u00e9ho povrchu, co\u017e je z\u00e1sadn\u00ed nap\u0159\u00edklad i pro v\u00fdrobu leteck\u00fdch p\u00edstov\u00fdch motor\u016f. Tyto speci\u00e1ln\u00ed n\u00e1stroje se vyu\u017e\u00edvaj\u00ed jak v kusov\u00e9, tak i v s\u00e9riov\u00e9 v\u00fdrob\u011b, a sv\u00e9 m\u00edsto najdou i v \u00fadr\u017eb\u00e1\u0159sk\u00fdch d\u00edln\u00e1ch.                                                                                                                                                                                                                                                                                                                                                                                          3.9\/5 - (8 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Jak zhotovit ve stroj\u00edrensk\u00e9 praxi velmi p\u0159esn\u00e9 v\u00e1lcov\u00e9 otvory","item":"https:\/\/www.finarea.cz\/jak-zhotovit-ve-strojirenske-praxi-velmi-presne-valcove-otvory\/#breadcrumbitem"}]}]