[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.barcelo.cz\/jak-se-ve-strojirenstvi-zhotovuji-presne-valcove-otvory\/#Article","mainEntityOfPage":"https:\/\/www.barcelo.cz\/jak-se-ve-strojirenstvi-zhotovuji-presne-valcove-otvory\/","headline":"Jak se ve stroj\u00edrenstv\u00ed zhotovuj\u00ed p\u0159esn\u00e9 v\u00e1lcov\u00e9 otvory","name":"Jak se ve stroj\u00edrenstv\u00ed zhotovuj\u00ed p\u0159esn\u00e9 v\u00e1lcov\u00e9 otvory","description":"S vrt\u00e1n\u00edm otvor\u016f se seznamuj\u00ed ji\u017e d\u011bti \u0161kolou povinn\u00e9 a vrt\u00e1ky tak\u00e9 b\u00fdvaj\u00ed prvn\u00edmi n\u00e1stroji, s nimi\u017e se setkaj\u00ed jak ve \u0161koln\u00edch d\u00edln\u00e1ch, tak i v...","datePublished":"2023-03-28","dateModified":"2023-07-28","author":{"@type":"Person","@id":"https:\/\/www.barcelo.cz\/author\/#Person","name":"","url":"https:\/\/www.barcelo.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/0dc285cbe86eecc8073f119fcb2e2c7032b51533f5bb47611c7d4a598558b8b7?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/0dc285cbe86eecc8073f119fcb2e2c7032b51533f5bb47611c7d4a598558b8b7?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"barcelo.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.barcelo.cz\/wp-content\/uploads\/metal-gc97b09777_640.jpg","url":"https:\/\/www.barcelo.cz\/wp-content\/uploads\/metal-gc97b09777_640.jpg","height":0,"width":0},"url":"https:\/\/www.barcelo.cz\/jak-se-ve-strojirenstvi-zhotovuji-presne-valcove-otvory\/","about":["Nakupov\u00e1n\u00ed"],"wordCount":445,"articleBody":"      S vrt\u00e1n\u00edm otvor\u016f se seznamuj\u00ed ji\u017e d\u011bti \u0161kolou povinn\u00e9 a vrt\u00e1ky tak\u00e9 b\u00fdvaj\u00ed prvn\u00edmi n\u00e1stroji, s nimi\u017e se setkaj\u00ed jak ve \u0161koln\u00edch d\u00edln\u00e1ch, tak i v dom\u00e1cnosti. Ru\u010dn\u00ed vrta\u010dka b\u00fdv\u00e1 nej\u010dast\u011bj\u0161\u00edm d\u00edlensk\u00fdm strojem v dom\u00e1cnostech a mnoz\u00ed rodi\u010de d\u00e1vaj\u00ed mo\u017enost sv\u00fdm d\u011btem vyzkou\u0161et, jak se s vrta\u010dkou vlastn\u011b pracuje. Ru\u010dn\u00ed vrta\u010dky slou\u017e\u00ed pro velmi hrub\u00e9 opracov\u00e1n\u00ed kov\u016f, d\u0159eva a dal\u0161\u00edch materi\u00e1l\u016f, s t\u00edm, \u017ee nelze o\u010dek\u00e1vat v\u00fdrazn\u00e9 p\u0159esnosti, ani co se t\u00fd\u010de pr\u016fm\u011bru otvoru, ani jeho jakosti povrchu.O n\u011bco l\u00e9pe jsou na tom vrt\u00e1ky s ku\u017eelovou stopkou, s nimi\u017e se po\u010d\u00edt\u00e1 pro z\u00e1kladn\u00ed obr\u00e1b\u011bc\u00ed operace ve stroj\u00edrensk\u00e9 v\u00fdrob\u011b. Tam je vrt\u00e1n\u00ed p\u0159esn\u011bj\u0161\u00ed d\u00edky sofistikovan\u011bj\u0161\u00edmu uchycen\u00ed n\u00e1stroje, ale st\u00e1le se jen jedn\u00e1 o jednoduch\u00fd vrtac\u00ed n\u00e1stroj se dv\u011bma b\u0159ity, a to je pro velmi p\u0159esn\u00e9 otvory m\u00e1lo.V\u00edceb\u0159it\u00e9 n\u00e1stroje jsou p\u0159esn\u011bj\u0161\u00edM\u00e1te-li za \u00fakol zhotovit kruhov\u00fd (v\u00e1lcov\u00fd) otvor velmi p\u0159esn\u00fd, bude nutn\u00e9 s\u00e1hnout po n\u00e1stroj\u00edch s v\u00edce b\u0159ity. A t\u011bmi jsou v\u00fdhrubn\u00edky a v\u00fdstru\u017en\u00edky. V\u00fdhrubn\u00edk je n\u00e1stroj pro hrub\u0161\u00ed opracov\u00e1n\u00ed ji\u017e p\u0159edvrtan\u00e9ho otvoru a m\u00e1 t\u0159i nebo \u010dty\u0159i b\u0159ity. Je\u0161t\u011b p\u0159esn\u011bj\u0161\u00edho povrchu a kruhov\u00e9ho tvaru otvoru doc\u00edl\u00edme v\u00fdstru\u017en\u00edkem, a ten m\u00e1 ji\u017e b\u0159it\u016f mnohem v\u00edce. N\u011bkter\u00e9 n\u00e1stroje mohou m\u00edt a\u017e osmn\u00e1ct b\u0159it\u016f, a v p\u0159ibli\u017en\u00e9 terminologii plat\u00ed, \u017ee \u010d\u00edm v\u00edce b\u0159it\u016f, t\u00edm p\u0159esn\u011bj\u0161\u00ed obr\u00e1b\u011bn\u00ed.V\u00fdhrubn\u00edky, jako nap\u0159\u00edklad n\u00e1str\u010dn\u00e9 221432 cel\u00e9 z HSS i-n\u00e1stroje, ji\u017e obr\u00e1b\u00ed materi\u00e1l s takovou p\u0159esnost\u00ed, \u017ee jej lze vyu\u017e\u00edt pro pohybliv\u00e9 sou\u010d\u00e1sti r\u016fzn\u00fdch stroj\u016f a mechanism\u016f, kter\u00e9 prov\u00e1z\u00ed lidsk\u00fd \u017eivot tak\u0159ka ve v\u0161ech odv\u011btv\u00edch po\u010d\u00ednaje medic\u00ednou, p\u0159es zem\u011bd\u011blstv\u00ed a\u017e po automobilov\u00fd a leteck\u00fd pr\u016fmysl.Na p\u0159esn\u00e9 stroj\u00edrensk\u00e9 v\u00fdrob\u011b z\u00e1le\u017e\u00ed \u00fasp\u011bch ve\u0161ker\u00e9ho lidsk\u00e9ho po\u010d\u00edn\u00e1n\u00ed, kde hraje z\u00e1sadn\u00ed roli technika. Neobejde se bez n\u00ed prakticky nikdo, a proto maj\u00ed v\u00fdhrubn\u00edky z n\u00e1strojov\u00e9 rychlo\u0159ezn\u00e9 oceli v na\u0161em sv\u011bt\u011b st\u00e1le sv\u00e9 pevn\u00e9 m\u00edsto.                                                                                                                                                                                                                                                                                                                                                                                          4\/5 - (10 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Jak se ve stroj\u00edrenstv\u00ed zhotovuj\u00ed p\u0159esn\u00e9 v\u00e1lcov\u00e9 otvory","item":"https:\/\/www.barcelo.cz\/jak-se-ve-strojirenstvi-zhotovuji-presne-valcove-otvory\/#breadcrumbitem"}]}]