{"id":6714,"date":"2021-01-27T17:48:20","date_gmt":"2021-01-27T15:48:20","guid":{"rendered":"https:\/\/blog.federnshop.com\/navrh-kovovych-pruzin-cast-2-vypocet\/"},"modified":"2024-04-24T16:27:18","modified_gmt":"2024-04-24T14:27:18","slug":"navrh-kovovych-pruzin-cast-2-vypocet","status":"publish","type":"post","link":"https:\/\/blog.federnshop.com\/cs\/navrh-kovovych-pruzin-cast-2-vypocet\/","title":{"rendered":"N\u00e1vrh kovov\u00fdch pru\u017ein &#8211; \u010c\u00e1st 2 &#8222;V\u00fdpo\u010det&#8220;"},"content":{"rendered":"<p>V <a href=\"https:\/\/blog.federnshop.com\/auslegung-metallfedern-grundlagen\/\" target=\"_blank\" rel=\"noopener\">prvn\u00ed \u010d\u00e1sti<\/a> t\u00e9to dvoud\u00edln\u00e9 s\u00e9rie m\u00e1 <a href=\"https:\/\/blog.federnshop.com\/gutekunst-federn\/\" target=\"_blank\" rel=\"noopener noreferrer\">Gutekunst Federn<\/a> o <a href=\"https:\/\/blog.federnshop.com\/auslegung-metallfedern-grundlagen\/\" target=\"_blank\" rel=\"noopener noreferrer\">Z\u00e1klady pru\u017einov\u00e9ho designu<\/a> informovan\u00fd. V t\u00e9to druh\u00e9 \u010d\u00e1sti najdete konkr\u00e9tn\u00ed v\u00fdpo\u010dtov\u00e1 data pro n\u00e1vrh<a href=\"https:\/\/blog.federnshop.com\/druckfedern\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Tla\u010dn\u00e9 pru\u017einy<\/a> ,<a href=\"https:\/\/blog.federnshop.com\/zugfedern\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Ta\u017en\u00e9 pru\u017einy<\/a> a<a href=\"https:\/\/blog.federnshop.com\/schenkelfedern-torsionsfedern\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Pru\u017einy nohou<\/a> (Torzn\u00ed pru\u017einy). To je tak\u00e9 k dispozici pro individu\u00e1ln\u00ed v\u00fdpo\u010det<a href=\"https:\/\/www.federnshop.com\/de\/service-und-informationen\/federberechnung-nach-din-13906.html\" target=\"_blank\" rel=\"noopener noreferrer\"> Program v\u00fdpo\u010dtu pru\u017ein Gutekunst WinFSB<\/a> k likvidaci.<\/p>\n<p>C\u00edlem konstrukce pru\u017einy tla\u010dn\u00e9 pru\u017einy, ta\u017en\u00e9 pru\u017einy nebo no\u017en\u00ed pru\u017einy je naj\u00edt nejekonomi\u010dt\u011bj\u0161\u00ed pru\u017einu pro dan\u00fd \u00fakol s p\u0159ihl\u00e9dnut\u00edm ke v\u0161em okolnostem, kter\u00e1 tak\u00e9 zapad\u00e1 do dostupn\u00e9ho prostoru a kter\u00e1 je po\u017eadov\u00e1na<a href=\"https:\/\/blog.federnshop.com\/dauerfestigkeit\/\" target=\"_blank\" rel=\"noopener noreferrer\"> \u017eivotnost<\/a> dos\u00e1hl. Krom\u011b t\u011bchto v\u00fdrobn\u00edch a <a title=\"Pru\u017einov\u00e9 ocelov\u00e9 dr\u00e1ty a jejich vlastnosti\" href=\"https:\/\/blog.federnshop.com\/federstahldraht\/\" target=\"_blank\" rel=\"noopener\">materi\u00e1lov\u00fdch po\u017eadavk\u016f<\/a> existuje i ten prav\u00fd J<a href=\"https:\/\/blog.federnshop.com\/federauslegung\/\" target=\"_blank\" rel=\"noopener noreferrer\">arn\u00ed design<\/a> zvl\u00e1\u0161tn\u00ed v\u00fdznam pro.<\/p>\n<p><strong>P\u0159ed v\u00fdpo\u010dtem pru\u017einy je t\u0159eba sestavit n\u00e1sleduj\u00edc\u00ed po\u017eadavky na kovovou pru\u017einu:<\/strong><\/p>\n<p><strong>1.<\/strong><a href=\"https:\/\/blog.federnshop.com\/beanspruchung-druckfedern\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Typ zat\u00ed\u017een\u00ed<\/a> (statick\u00e9 nebo dynamick\u00e9)<\/p>\n<p><strong>2.<\/strong> <a title=\"\u00danavov\u00e1 s\u00edla\" href=\"https:\/\/blog.federnshop.com\/dauerfestigkeit\/\" target=\"_blank\" rel=\"noopener\">\u017eivotnost<\/a><\/p>\n<p><strong>3.<\/strong> <a href=\"https:\/\/blog.federnshop.com\/federwerkstoffe-arbeitstemperatur\/\" target=\"_blank\" rel=\"noopener noreferrer\">Provozn\u00ed teplota<\/a><\/p>\n<p><strong>4. <\/strong> <a href=\"https:\/\/blog.federnshop.com\/federstahl\/\" target=\"_blank\" rel=\"noopener\">Okoln\u00ed m\u00e9dium<\/a><\/p>\n<p><strong>5.<\/strong> <a href=\"https:\/\/blog.federnshop.com\/federkraft-berechnen\/\" target=\"_blank\" rel=\"noopener noreferrer\">Pot\u0159ebn\u00e9 s\u00edly a pojezd pru\u017einy<\/a><\/p>\n<p><strong>6.<\/strong> St\u00e1vaj\u00edc\u00ed instala\u010dn\u00ed prostor<\/p>\n<p><strong>7.<\/strong> tolerance (<a href=\"https:\/\/blog.federnshop.com\/toleranzen-druckfedern\/\" target=\"_blank\" rel=\"noopener\">tla\u010dn\u00e9 pru\u017einy<\/a>, <a href=\"https:\/\/blog.federnshop.com\/toleranzen-zugfedern\/\" target=\"_blank\" rel=\"noopener\">ta\u017en\u00e9 pru\u017einy<\/a>)<\/p>\n<p><strong>8.<\/strong><a href=\"https:\/\/blog.federnshop.com\/auslegung-metallfedern-grundlagen\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Situace instalace<\/a> (Vzp\u011br, bo\u010dn\u00ed zav\u011b\u0161en\u00ed)<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Ka\u017ed\u00fd jarn\u00ed v\u00fdpo\u010det se skl\u00e1d\u00e1 ze dvou f\u00e1z\u00ed:<\/strong><\/p>\n<ul>\n<li><strong><a href=\"https:\/\/blog.federnshop.com\/funktions-festigkeitsnachweis\/\" target=\"_blank\" rel=\"noopener noreferrer\">D\u016fkaz funkce<\/a> :<\/strong> Kontrola pru\u017einy, sil a dr\u00e1hy pru\u017einy, chov\u00e1n\u00ed vibrac\u00ed atd.<\/li>\n<li><a href=\"https:\/\/blog.federnshop.com\/funktions-festigkeitsnachweis\/\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>Ov\u011b\u0159en\u00ed pevnosti<\/strong><br \/>\n<\/a>Kontrola dodr\u017een\u00ed p\u0159\u00edpustn\u00fdch nap\u011bt\u00ed nebo d\u016fkaz \u00fanavov\u00e9 pevnosti<strong>.<\/strong><\/li>\n<\/ul>\n<p>To vy\u017eaduje iterativn\u00ed p\u0159\u00edstup.<\/p>\n<p>The<strong> D\u016fkaz s\u00edly<\/strong> je zalo\u017eeno na rozhodnut\u00ed, zda je pru\u017eina zat\u00ed\u017eena staticky, kvazi-staticky nebo dynamicky. Pro vymezen\u00ed by m\u011bla b\u00fdt pou\u017eita n\u00e1sleduj\u00edc\u00ed krit\u00e9ria:<\/p>\n<ul>\n<li><strong><a href=\"https:\/\/blog.federnshop.com\/beanspruchung-druckfedern\/\" target=\"_blank\" rel=\"noopener noreferrer\">Statick\u00e9 nebo kvazistatick\u00e9 nap\u011bt\u00ed<\/a> :<\/strong> \u010casov\u011b konstantn\u00ed (klidov\u00e9) zat\u00ed\u017een\u00ed nebo \u010dasov\u011b prom\u011bnn\u00e9 zat\u00ed\u017een\u00ed s celkov\u00fdm po\u010dtem m\u00e9n\u011b ne\u017e 10 000 zdvih\u016f.<\/li>\n<li><strong><a href=\"https:\/\/blog.federnshop.com\/beanspruchung-druckfedern\/\" target=\"_blank\" rel=\"noopener noreferrer\">Dynamick\u00fd stres<\/a> :<\/strong> \u010dasov\u011b prom\u011bnn\u00e1 zat\u00ed\u017een\u00ed s v\u00edce ne\u017e 10 000 zdvihy. Pru\u017eina je v\u011bt\u0161inou p\u0159edepnut\u00e1 a vystavena periodick\u00fdm bobtn\u00e1n\u00edm se sinusovou k\u0159ivkou, kter\u00e9 se vyskytuj\u00ed n\u00e1hodn\u011b (stochasticky), nap\u0159\u00edklad v p\u0159\u00edpad\u011b zav\u011b\u0161en\u00ed vozidla. V n\u011bkter\u00fdch p\u0159\u00edpadech doch\u00e1z\u00ed k n\u00e1hl\u00fdm zm\u011bn\u00e1m s\u00edly.<\/li>\n<\/ul>\n<p>P\u0159i dimenzov\u00e1n\u00ed pru\u017ein je t\u0159eba ur\u010dit meze nap\u011bt\u00ed, kter\u00e9 vych\u00e1zej\u00ed z<a href=\"https:\/\/blog.federnshop.com\/zugfestigkeit-federwerkstoffe\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Hodnoty pevnosti materi\u00e1l\u016f<\/a> a vezm\u011bte v \u00favahu typ stresu. K ur\u010den\u00ed p\u0159\u00edpustn\u00e9ho nap\u011bt\u00ed je zahrnut bezpe\u010dnostn\u00ed faktor. Po srovn\u00e1n\u00ed se skute\u010dn\u00fdm nap\u011bt\u00edm mus\u00ed b\u00fdt dimenzov\u00e1n\u00ed pru\u017einy revidov\u00e1no pomoc\u00ed itera\u010dn\u00edho postupu. Plat\u00ed n\u00e1sleduj\u00edc\u00ed: <strong>Jmenovit\u00e9 nap\u011bt\u00ed \u2264 p\u0159\u00edpustn\u00e9 nap\u011bt\u00ed<\/strong><\/p>\n<h2><\/h2>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/blog.federnshop.com\/cs\/navrh-kovovych-pruzin-cast-2-vypocet\/#Vypocet_tlacnych_pruzin\" >V\u00fdpo\u010det tla\u010dn\u00fdch pru\u017ein<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/blog.federnshop.com\/cs\/navrh-kovovych-pruzin-cast-2-vypocet\/#Vseobecne\" >V\u0161eobecn\u00e9<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/blog.federnshop.com\/cs\/navrh-kovovych-pruzin-cast-2-vypocet\/#Vypoctove_vzorce_valcova_tlacna_pruzina\" >V\u00fdpo\u010dtov\u00e9 vzorce v\u00e1lcov\u00e1 tla\u010dn\u00e1 pru\u017eina<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/blog.federnshop.com\/cs\/navrh-kovovych-pruzin-cast-2-vypocet\/#Dukaz_funkce_tlacnych_pruzin\" >D\u016fkaz funkce tla\u010dn\u00fdch pru\u017ein<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/blog.federnshop.com\/cs\/navrh-kovovych-pruzin-cast-2-vypocet\/#Dukaz_pevnosti_tlacne_pruziny\" >D\u016fkaz pevnosti tla\u010dn\u00e9 pru\u017einy<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/blog.federnshop.com\/cs\/navrh-kovovych-pruzin-cast-2-vypocet\/#Geometricke_vztahy_v_tlacnych_pruzinach\" >Geometrick\u00e9 vztahy v tla\u010dn\u00fdch pru\u017ein\u00e1ch<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/blog.federnshop.com\/cs\/navrh-kovovych-pruzin-cast-2-vypocet\/#Vypocet_taznych_pruzin\" >V\u00fdpo\u010det ta\u017en\u00fdch pru\u017ein<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/blog.federnshop.com\/cs\/navrh-kovovych-pruzin-cast-2-vypocet\/#Vseobecne-2\" >V\u0161eobecn\u00e9<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/blog.federnshop.com\/cs\/navrh-kovovych-pruzin-cast-2-vypocet\/#Vypoctove_vzorce_valcova_tazna_pruzina\" >V\u00fdpo\u010dtov\u00e9 vzorce v\u00e1lcov\u00e1 ta\u017en\u00e1 pru\u017eina<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/blog.federnshop.com\/cs\/navrh-kovovych-pruzin-cast-2-vypocet\/#Dukaz_funkce_napinaci_pruziny\" >D\u016fkaz funkce nap\u00ednac\u00ed pru\u017einy<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/blog.federnshop.com\/cs\/navrh-kovovych-pruzin-cast-2-vypocet\/#Dukaz_pevnosti_taznych_pruzin\" >D\u016fkaz pevnosti ta\u017en\u00fdch pru\u017ein<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/blog.federnshop.com\/cs\/navrh-kovovych-pruzin-cast-2-vypocet\/#Geometricke_vztahy_v_taznych_pruzinach\" >Geometrick\u00e9 vztahy v ta\u017en\u00fdch pru\u017ein\u00e1ch<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/blog.federnshop.com\/cs\/navrh-kovovych-pruzin-cast-2-vypocet\/#Vypocet_torznich_pruzin_torzni_pruziny\" >V\u00fdpo\u010det torzn\u00edch pru\u017ein (torzn\u00ed pru\u017einy)<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/blog.federnshop.com\/cs\/navrh-kovovych-pruzin-cast-2-vypocet\/#Vseobecne-3\" >V\u0161eobecn\u00e9<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/blog.federnshop.com\/cs\/navrh-kovovych-pruzin-cast-2-vypocet\/#Vypoctove_vzorce_pro_valcove_torzni_pruziny_Torzni_pruziny\" >V\u00fdpo\u010dtov\u00e9 vzorce pro v\u00e1lcov\u00e9 torzn\u00ed pru\u017einy (Torzn\u00ed pru\u017einy)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/blog.federnshop.com\/cs\/navrh-kovovych-pruzin-cast-2-vypocet\/#Dukaz_funkce_torznich_pruzin_torzni_pruziny\" >D\u016fkaz funkce torzn\u00edch pru\u017ein (torzn\u00ed pru\u017einy)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/blog.federnshop.com\/cs\/navrh-kovovych-pruzin-cast-2-vypocet\/#Dukaz_pevnosti_torznich_pruzin_torzni_pruziny\" >D\u016fkaz pevnosti torzn\u00edch pru\u017ein (torzn\u00ed pru\u017einy)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/blog.federnshop.com\/cs\/navrh-kovovych-pruzin-cast-2-vypocet\/#Geometricke_vztahy_v_torznich_pruzinach_torzni_pruziny\" >Geometrick\u00e9 vztahy v torzn\u00edch pru\u017ein\u00e1ch (torzn\u00ed pru\u017einy)<\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Vypocet_tlacnych_pruzin\"><\/span>V\u00fdpo\u010det tla\u010dn\u00fdch pru\u017ein<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4><span class=\"ez-toc-section\" id=\"Vseobecne\"><\/span>V\u0161eobecn\u00e9<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>Za studena<a href=\"https:\/\/blog.federnshop.com\/federrate-berechnen\/\" target=\"_blank\" rel=\"noopener noreferrer\"> v\u00e1lcov\u00e9 tla\u010dn\u00e9 pru\u017einy<\/a> s konstantn\u00edm sklonem se v praxi nej\u010dast\u011bji pou\u017e\u00edvaj\u00ed. Dr\u00e1t je za studena formov\u00e1n navinut\u00edm kolem trnu. V z\u00e1vislosti na posuvu stoupac\u00edho kol\u00edku jsou regulov\u00e1ny rozte\u010d c\u00edvky a poloha pru\u017einy. Po navinut\u00ed prob\u011bhne popou\u0161t\u011bn\u00ed, aby se sn\u00ed\u017eilo vnit\u0159n\u00ed nap\u011bt\u00ed na ja\u0159e a zv\u00fd\u0161il se limit smykov\u00e9 pru\u017enosti. Tak\u017ee<a href=\"https:\/\/blog.federnshop.com\/setzbetrag-druckfedern-2\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Nastaven\u00ed \u010d\u00e1stky<\/a> . Popou\u0161t\u011bc\u00ed teploty a doby z\u00e1vis\u00ed na materi\u00e1lu; chlazen\u00ed prob\u00edh\u00e1 na vzduchu p\u0159i norm\u00e1ln\u00ed pokojov\u00e9 teplot\u011b.<\/p>\n<p>Dal\u0161\u00edmi d\u016fle\u017eit\u00fdmi pracovn\u00edmi kroky p\u0159i v\u00fdrob\u011b pru\u017ein jsou brou\u0161en\u00ed a tuhnut\u00ed. Konce pru\u017ein jsou obvykle brou\u0161eny od tlou\u0161\u0165ky dr\u00e1tu 0,5 mm, aby bylo zaji\u0161t\u011bno rovnob\u011b\u017en\u00e9 ulo\u017een\u00ed pru\u017einy a optim\u00e1ln\u00ed zaveden\u00ed s\u00edly.<\/p>\n<p>P\u0159ekro\u010d\u00ed, kdy\u017e je pru\u017eina zat\u00ed\u017eena<a href=\"https:\/\/blog.federnshop.com\/schubspannung-berechnen\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Smykov\u00e9 nap\u011bt\u00ed<\/a> p\u0159\u00edpustn\u00e1 hodnota nast\u00e1v\u00e1 trval\u00e1 deformace, kter\u00e1 se projev\u00ed zmen\u0161en\u00edm nenapnut\u00e9 d\u00e9lky. V jarn\u00ed technologii se tento proces naz\u00fdv\u00e1 \u201enastaven\u00ed\u201c, co\u017e je spojeno s pojmy \u201epl\u00ed\u017eiv\u00fd\u201c a \u201e<a href=\"https:\/\/blog.federnshop.com\/relaxation-federn\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Relaxace<\/a> &#8222;Z materi\u00e1lov\u00e9ho in\u017een\u00fdrstv\u00ed je t\u0159eba rovnat.&#8220; Aby se tomu zabr\u00e1nilo, jsou tla\u010dn\u00e9 pru\u017einy navinuty d\u00e9le o p\u0159edpokl\u00e1dan\u00e9 mno\u017estv\u00ed tuhnut\u00ed a pozd\u011bji stla\u010deny na d\u00e9lku bloku. Tato z\u00e1loha umo\u017e\u0148uje lep\u0161\u00ed vyu\u017eit\u00ed materi\u00e1lu a umo\u017e\u0148uje vy\u0161\u0161\u00ed zat\u00ed\u017een\u00ed p\u0159i pozd\u011bj\u0161\u00edm pou\u017eit\u00ed.<\/p>\n<p>&nbsp;<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Vypoctove_vzorce_valcova_tlacna_pruzina\"><\/span><a href=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Gutekunst_Druckfedern_Formeln_2015.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">V\u00fdpo\u010dtov\u00e9 vzorce v\u00e1lcov\u00e1 tla\u010dn\u00e1 pru\u017eina<\/a><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>V\u00fdpo\u010det<a href=\"https:\/\/blog.federnshop.com\/druckfedern\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Kompresn\u00ed pru\u017eina<\/a> na z\u00e1klad\u011b v\u00fdpo\u010dtov\u00fdch rovnic podle DIN EN 13906-1:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-2846 size-large\" src=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/\/Druckfeder_technisch-1024x719.jpg\" alt=\"Technick\u00e9 ilustrace tla\u010dn\u00e9 pru\u017einy\" width=\"750\" height=\"527\" data-wp-pid=\"2846\" srcset=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_technisch-1024x719.jpg 1024w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_technisch-300x211.jpg 300w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_technisch-768x539.jpg 768w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_technisch-600x421.jpg 600w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_technisch-150x105.jpg 150w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_technisch-400x281.jpg 400w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_technisch-200x140.jpg 200w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_technisch.jpg 1211w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>Obr\u00e1zek: Teoretick\u00fd diagram tla\u010dn\u00e9 pru\u017einy<\/p>\n<p>&nbsp;<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Dukaz_funkce_tlacnych_pruzin\"><\/span>D\u016fkaz funkce tla\u010dn\u00fdch pru\u017ein<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>Pro v\u00e1lcov\u00e9 tla\u010dn\u00e9 pru\u017einy z dr\u00e1tu kruhov\u00e9ho pr\u016f\u0159ezu plat\u00ed toto:<\/p>\n<p><strong>S\u00edla pru\u017einy vzorce:<\/strong> <span class=\"katex-eq\" data-katex-display=\"false\">\\Large R=\\frac{ Gd^{4}}{8D^{3}n}<\/span><\/p>\n<p>z\u00a0 &#8222;R = F \/ s&#8220;\u00a0 vypl\u00fdv\u00e1:<\/p>\n<p><strong>S\u00edla pru\u017einy: <\/strong><span class=\"katex-eq\" data-katex-display=\"false\">\\Large F=\\frac{ Gd^{4}s}{8D^{3}n}<\/span><strong><br \/>\n<\/strong><\/p>\n<p>jako:<\/p>\n<p><strong>Pojezdov\u00e1 dr\u00e1ha: <\/strong><span class=\"katex-eq\" data-katex-display=\"false\">\\Large s=\\frac{8D^{3}nF}{Gd^{4}}<\/span><strong><br \/>\n<\/strong><\/p>\n<p>&nbsp;<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Dukaz_pevnosti_tlacne_pruziny\"><\/span>D\u016fkaz pevnosti tla\u010dn\u00e9 pru\u017einy<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>Po ur\u010den\u00ed rozm\u011br\u016f pru\u017einy mus\u00ed b\u00fdt pevnost ov\u011b\u0159ena. K tomu se ur\u010d\u00ed existuj\u00edc\u00ed smykov\u00e9 nap\u011bt\u00ed:<\/p>\n<p><strong>Nap\u011bt\u00ed ze s\u00edly: <\/strong><span class=\"katex-eq\" data-katex-display=\"false\">\\Large \\tau=\\frac{8DF}{\\pi d^{3}}<\/span><strong><br \/>\n<\/strong><\/p>\n<p><strong>Nap\u011bt\u00ed z cesty: <\/strong><span class=\"katex-eq\" data-katex-display=\"false\">\\Large \\tau=\\frac{Gds}{\\pi n D^{2}}<\/span><strong><br \/>\n<\/strong><\/p>\n<p>Zat\u00edmco smykov\u00e9 nap\u011bt\u00ed \u03c4 se m\u00e1 pou\u017e\u00edt pro n\u00e1vrh staticky nebo kvazistaticky zat\u00ed\u017een\u00fdch pru\u017ein, plat\u00ed n\u00e1sleduj\u00edc\u00ed<a href=\"https:\/\/blog.federnshop.com\/schubspannung-berechnen\/\" target=\"_blank\" rel=\"noopener noreferrer\"> opraven\u00e9 smykov\u00e9 nap\u011bt\u00ed<\/a> \u03c4<sub> k<\/sub> pro dynamicky nam\u00e1han\u00e9 pru\u017einy. Rozlo\u017een\u00ed smykov\u00e9ho nap\u011bt\u00ed v pr\u016f\u0159ezu dr\u00e1tu pru\u017einy je nerovnom\u011brn\u00e9, nejvy\u0161\u0161\u00ed nap\u011bt\u00ed nast\u00e1v\u00e1 na vnit\u0159n\u00edm pr\u016fm\u011bru pru\u017einy. S korek\u010dn\u00edm faktorem nap\u011bt\u00ed k, kter\u00fd z\u00e1vis\u00ed na pom\u011bru nav\u00edjen\u00ed (pom\u011br st\u0159edn\u00edho pr\u016fm\u011bru k tlou\u0161\u0165ce dr\u00e1tu) pru\u017einy, lze p\u0159ibli\u017en\u011b ur\u010dit nejvy\u0161\u0161\u00ed nap\u011bt\u00ed. Pro<a href=\"https:\/\/blog.federnshop.com\/beanspruchung-druckfedern\/\" target=\"_blank\" rel=\"noopener noreferrer\"> dynamicky nam\u00e1han\u00e9 tla\u010dn\u00e9 pru\u017einy<\/a> v\u00fdsledek je:<\/p>\n<p><strong>Korigovan\u00e9 smykov\u00e9 nap\u011bt\u00ed: <\/strong><span class=\"katex-eq\" data-katex-display=\"false\">\\Large \\tau_{k}=k\\tau<\/span><strong><br \/>\n<\/strong><\/p>\n<p>kde plat\u00ed pro k (podle Bergstr\u00e4ssera):<\/p>\n<span class=\"katex-eq\" data-katex-display=\"false\">\\Large k=\\frac{\\frac{D}{d}+0,5}{\\frac{D}{d}-0,75}<\/span>\n<p>Nyn\u00ed je provedeno srovn\u00e1n\u00ed s povolen\u00fdm nap\u011bt\u00edm. To je definov\u00e1no takto:<\/p>\n<p><strong>P\u0159\u00edpustn\u00e9 nap\u011bt\u00ed: <\/strong><\/p>\n<span class=\"katex-eq\" data-katex-display=\"false\">\\Large \\tau_{{zul}}=0,5\\cdot R_{{m}}<\/span>\n<p>a<\/p>\n<span class=\"katex-eq\" data-katex-display=\"false\">\\Large \\tau_{{czul}}=0,56\\cdot R_{{m}}<\/span>\n<p>Hodnoty pro<a href=\"https:\/\/blog.federnshop.com\/zugfestigkeit-federwerkstoffe\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Minim\u00e1ln\u00ed pevnost v tahu R<sub> m<\/sub><\/a> jsou z\u00e1visl\u00e9 na tlou\u0161\u0165ce dr\u00e1tu a lze je naj\u00edt v norm\u00e1ch p\u0159\u00edslu\u0161n\u00fdch materi\u00e1l\u016f.<\/p>\n<p>Zpravidla mus\u00ed b\u00fdt mo\u017en\u00e9 stla\u010dit tla\u010dn\u00e9 pru\u017einy a\u017e do d\u00e9lky bloku, proto je p\u0159\u00edpustn\u00e9 nap\u011bt\u00ed p\u0159i d\u00e9lce bloku t<sub> czul<\/sub> zv\u00e1\u017eit.<\/p>\n<p>V p\u0159\u00edpad\u011b dynamick\u00e9ho zat\u00ed\u017een\u00ed<a href=\"https:\/\/blog.federnshop.com\/beanspruchung-druckfedern\/\" target=\"_blank\" rel=\"noopener noreferrer\"> N\u00edzk\u00e9 a vysok\u00e9 nap\u011bt\u00ed (t<sub> k<\/sub> 1 a t<sub> k<\/sub> 2)<\/a> p\u0159\u00edslu\u0161n\u00e9ho zdvihu lze ur\u010dit. Rozd\u00edl je v zdvihov\u00e9m nap\u011bt\u00ed. Horn\u00ed nap\u011bt\u00ed i nap\u011bt\u00ed zdvihu nesm\u00ed p\u0159ekro\u010dit odpov\u00eddaj\u00edc\u00ed p\u0159\u00edpustn\u00e9 hodnoty. Ty lze naj\u00edt v diagramech \u00fanavov\u00e9 pevnosti v EN 13906-1: 2002. Pokud nap\u011bt\u00ed vydr\u017e\u00ed toto srovn\u00e1n\u00ed, je pru\u017eina odoln\u00e1 proti \u00fanav\u011b s cyklem mezn\u00edho zat\u00ed\u017een\u00ed 10<sup>7<\/sup> .<\/p>\n<p>&nbsp;<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Geometricke_vztahy_v_tlacnych_pruzinach\"><\/span>Geometrick\u00e9 vztahy v tla\u010dn\u00fdch pru\u017ein\u00e1ch<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<table width=\"662\">\n<tbody>\n<tr>\n<td width=\"378\">Velikost pru\u017einy<\/td>\n<td width=\"284\">V\u00fdpo\u010dtov\u00e1 rovnice<\/td>\n<\/tr>\n<tr>\n<td width=\"378\">Celkov\u00fd po\u010det tah\u016f<\/td>\n<td width=\"284\">nt = n + 2<\/td>\n<\/tr>\n<tr>\n<td width=\"378\">D\u00e9lka bloku zemn\u00ed pru\u017einy<\/td>\n<td width=\"284\">LC = nt dmax<\/td>\n<\/tr>\n<tr>\n<td width=\"378\">D\u00e9lka bloku nele\u0161t\u011bn\u00e9ho hrotu<\/td>\n<td width=\"284\">LC = (nt + 1,5) dmax<\/td>\n<\/tr>\n<tr>\n<td width=\"378\">Nejmen\u0161\u00ed pou\u017eiteln\u00e1 d\u00e9lka<\/td>\n<td width=\"284\">Ln = LC + SA<\/td>\n<\/tr>\n<tr>\n<td width=\"378\">Nev\u00e1zan\u00e1 d\u00e9lka<\/td>\n<td width=\"284\">L0 = Ln + sn<\/td>\n<\/tr>\n<tr>\n<td width=\"378\">Sou\u010det minim\u00e1ln\u00edch vzd\u00e1lenost\u00ed mezi zat\u00e1\u010dkami<\/td>\n<td width=\"284\"><span class=\"katex-eq\" data-katex-display=\"false\">\\Large S_{a}=\\left (0,0015 \\frac{D^{2}}{d} + 0,1d \\right )\\cdot n<\/span><\/td>\n<\/tr>\n<tr>\n<td width=\"378\">Zv\u011bt\u0161en\u00ed vn\u011bj\u0161\u00edho pr\u016fm\u011bru p\u0159i zat\u00ed\u017een\u00ed<\/p>\n<p>&nbsp;<\/p>\n<p>h\u0159i\u0161t\u011b<\/td>\n<td width=\"284\"><span class=\"katex-eq\" data-katex-display=\"false\">\\Large \\triangle D_{e}=0,1\\frac{S^{2}-08Sd-0,2d^{2}}{D}<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span class=\"katex-eq\" data-katex-display=\"false\">\\Large S=\\frac{L0-d}{n}<\/span> (zem\u011b)<\/p>\n<p><span class=\"katex-eq\" data-katex-display=\"false\">\\Large S=\\frac{L0-2.5d}{n}<\/span> (nele\u0161t\u011bn\u00fd)<\/p>\n<p>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td width=\"378\">&nbsp;<\/p>\n<p>Zdvih vzp\u011bru (plat\u00ed pro r\u016fzn\u00e9<a href=\"https:\/\/blog.federnshop.com\/federendlagerungen-knickgrenzen\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Podp\u016frn\u00e9 koeficienty<\/a> n, viz EN 13906-1: 2002)<\/td>\n<td width=\"284\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2850\" src=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfedern_Knickfederweg_Formel.png\" alt=\"Vzorec vzp\u011bru vzp\u011bry s tlakovou pru\u017einou\" width=\"274\" height=\"85\" data-wp-pid=\"2850\" srcset=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfedern_Knickfederweg_Formel.png 274w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfedern_Knickfederweg_Formel-270x85.png 270w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfedern_Knickfederweg_Formel-150x47.png 150w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfedern_Knickfederweg_Formel-200x62.png 200w\" sizes=\"auto, (max-width: 274px) 100vw, 274px\" \/><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>V\u0161echny dynamicky nam\u00e1han\u00e9 pru\u017einy s jednou velikost\u00ed dr\u00e1tu&gt; 1 mm by m\u011bl<a href=\"https:\/\/blog.federnshop.com\/kugelstrahlen-metallfedern\/\" target=\"_blank\" rel=\"noopener noreferrer\"> v\u00fdst\u0159el zaslechl<\/a> v\u016fle. To zvy\u0161uje \u00fanavovou pevnost. Po proveden\u00ed funk\u010dn\u00edho ov\u011b\u0159en\u00ed a ov\u011b\u0159en\u00ed pevnosti je t\u0159eba prov\u00e9st a zohlednit r\u016fzn\u00e9 geometrick\u00e9 v\u00fdpo\u010dty, aby bylo zaji\u0161t\u011bno, \u017ee<a href=\"https:\/\/blog.federnshop.com\/federauswahl\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Kov\u00e1n\u00ed na pe\u0159\u00ed<\/a> aby bylo mo\u017en\u00e9 vlo\u017eit do konstrukce sou\u010d\u00e1sti. D\u00e9lka bloku<em> um\u011bt<\/em> nesm\u00ed b\u00fdt pod\u0159\u00edznuto, proto\u017ee zat\u00e1\u010dky jsou t\u011bsn\u011b proti sob\u011b, co\u017e je nejmen\u0161\u00ed pou\u017eiteln\u00e1 d\u00e9lka<em> by m\u011bl<\/em> nesm\u00ed b\u00fdt pod\u0159\u00edznut, proto\u017ee a<a href=\"https:\/\/blog.federnshop.com\/federkennlinie\/\" target=\"_blank\" rel=\"noopener noreferrer\"> k\u0159ivka line\u00e1rn\u00ed s\u00edly<\/a> stejn\u011b jako dynamick\u00e1 odolnost ji\u017e nejsou zaru\u010deny. Krom\u011b toho je t\u0159eba zohlednit p\u0159\u00edpustn\u00e9 tolerance podle DIN 2095.<\/p>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Vypocet_taznych_pruzin\"><\/span>V\u00fdpo\u010det ta\u017en\u00fdch pru\u017ein<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4><span class=\"ez-toc-section\" id=\"Vseobecne-2\"><\/span>V\u0161eobecn\u00e9<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><a href=\"https:\/\/blog.federnshop.com\/zugfedern\/\" target=\"_blank\" rel=\"noopener noreferrer\">Ta\u017en\u00e9 pru\u017einy<\/a> jsou navinuty kolem trnu stejn\u011b jako tla\u010dn\u00e9 pru\u017einy, ale bez vzd\u00e1lenosti mezi vinut\u00edmi a s r\u016fzn\u00fdmi<a href=\"https:\/\/blog.federnshop.com\/oesenformen-zugfedern\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Tvar o\u010dka<\/a> \/ Konce pru\u017einy pro p\u0159ipevn\u011bn\u00ed pru\u017einy. Ot\u00e1\u010dky jsou z hlediska technologie v\u00fdroby pevn\u011b p\u0159itla\u010deny proti sob\u011b. Tento vnit\u0159n\u00ed<a href=\"https:\/\/blog.federnshop.com\/zugfedern-wissen\/\" target=\"_blank\" rel=\"noopener noreferrer\"> P\u0159edp\u011bt\u00ed F<sub> 0<\/sub><\/a> z\u00e1vis\u00ed na pom\u011bru nav\u00edjen\u00ed a nelze jej vyrobit do po\u017eadovan\u00e9 v\u00fd\u0161ky. Poskytuje referen\u010dn\u00ed hodnoty pro mno\u017estv\u00ed p\u0159edp\u011bt\u00ed<a href=\"https:\/\/blog.federnshop.com\/neues-federnberechnungsprogramm\/\" target=\"_blank\" rel=\"noopener noreferrer\"> V\u00fdpo\u010detn\u00ed software WinFSB<\/a> z<a href=\"https:\/\/blog.federnshop.com\/gutekunst-federn\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Gutekunst pe\u0159\u00ed<\/a> po zad\u00e1n\u00ed p\u0159\u00edslu\u0161n\u00fdch \u00fadaj\u016f o pru\u017ein\u011b.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-2852 size-full\" src=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Oesenformen-1.jpg\" alt=\"Tvar o\u010dka s ta\u017en\u00fdmi pru\u017einami Gutekunst pe\u0159\u00ed\" width=\"998\" height=\"353\" data-wp-pid=\"2852\" srcset=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Oesenformen-1.jpg 998w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Oesenformen-1-300x106.jpg 300w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Oesenformen-1-768x272.jpg 768w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Oesenformen-1-600x212.jpg 600w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Oesenformen-1-150x53.jpg 150w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Oesenformen-1-400x141.jpg 400w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Oesenformen-1-200x71.jpg 200w\" sizes=\"auto, (max-width: 998px) 100vw, 998px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>Obr\u00e1zek: B\u011b\u017en\u00e9 tvary o\u010dka: a.) nap\u016fl n\u011bmeck\u00e9 oko; b.) cel\u00e1 n\u011bmeck\u00e1 smy\u010dka; c.) h\u00e1\u010dek oko; d.) anglick\u00e9 o\u010dko; e.) zvln\u011bn\u00fd h\u00e1\u010dek; f.) \u0161roubovac\u00ed kus<\/p>\n<p>V\u00fdhodou ta\u017en\u00fdch pru\u017ein je to<a href=\"https:\/\/blog.federnshop.com\/federendlagerungen-knickgrenzen\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Svoboda od zalomen\u00ed<\/a> Nev\u00fdhodou je v\u011bt\u0161\u00ed instala\u010dn\u00ed prostor a \u00fapln\u00e9 p\u0159eru\u0161en\u00ed toku s\u00edly p\u0159i prasknut\u00ed pru\u017einy.<\/p>\n<p>&nbsp;<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Vypoctove_vzorce_valcova_tazna_pruzina\"><\/span><a href=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Gutekunst_Zugfedern_Formeln_2015.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">V\u00fdpo\u010dtov\u00e9 vzorce v\u00e1lcov\u00e1 ta\u017en\u00e1 pru\u017eina<\/a><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>Podle v\u00fdpo\u010dtov\u00fdch rovnic pro tla\u010dn\u00e9 pru\u017einy, ale s p\u0159ihl\u00e9dnut\u00edm k p\u0159edp\u00ednac\u00ed s\u00edle, plat\u00ed pro v\u00e1lcov\u00e9 ta\u017en\u00e9 pru\u017einy vyroben\u00e9 z kulat\u00e9ho dr\u00e1tu n\u00e1sleduj\u00edc\u00ed vztahy (viz tak\u00e9 obr\u00e1zek 1.8):<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-2853 size-full\" src=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Zugfeder_technisch.jpg\" alt=\"Teoretick\u00fd diagram ta\u017en\u00e9 pru\u017einy | Gutekunst pe\u0159\u00ed\" width=\"1003\" height=\"472\" data-wp-pid=\"2853\" srcset=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Zugfeder_technisch.jpg 1003w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Zugfeder_technisch-300x141.jpg 300w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Zugfeder_technisch-768x361.jpg 768w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Zugfeder_technisch-600x282.jpg 600w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Zugfeder_technisch-150x71.jpg 150w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Zugfeder_technisch-400x188.jpg 400w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Zugfeder_technisch-200x94.jpg 200w\" sizes=\"auto, (max-width: 1003px) 100vw, 1003px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>Obr\u00e1zek: Teoretick\u00fd diagram nap\u00ednac\u00ed pru\u017einy<\/p>\n<p>&nbsp;<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Dukaz_funkce_napinaci_pruziny\"><\/span>D\u016fkaz funkce nap\u00ednac\u00ed pru\u017einy<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>Pro v\u00e1lcov\u00e9 ta\u017en\u00e9 pru\u017einy z dr\u00e1tu kruhov\u00e9ho pr\u016f\u0159ezu plat\u00ed:<\/p>\n<p><strong>Rychlost pru\u017een\u00ed: <\/strong><span class=\"katex-eq\" data-katex-display=\"false\">\\Large R=\\frac{Gd^4}{8D^3n}=\\frac{F-F0}{s}<\/span><strong><br \/>\n<\/strong><\/p>\n<p>z &#8222;R = F \/ s&#8220; vypl\u00fdv\u00e1:<\/p>\n<p><strong>S\u00edla pru\u017einy: <\/strong><span class=\"katex-eq\" data-katex-display=\"false\">\\Large F=\\frac{Gd^4s}{8D^3n}+F0<\/span><strong><br \/>\n<\/strong><\/p>\n<p>jako:<\/p>\n<p><strong>Jarn\u00ed cestov\u00e1n\u00ed: <\/strong><span class=\"katex-eq\" data-katex-display=\"false\">\\Large s=\\frac{8D^3n(F-F0)}{Gd^4}<\/span><strong><br \/>\n<\/strong><\/p>\n<p>&nbsp;<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Dukaz_pevnosti_taznych_pruzin\"><\/span>D\u016fkaz pevnosti ta\u017en\u00fdch pru\u017ein<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>Stejn\u011b jako u v\u00fdpo\u010dt\u016f tla\u010dn\u00e9 pru\u017einy je t\u0159eba ur\u010dit st\u00e1vaj\u00edc\u00ed smykov\u00e9 nap\u011bt\u00ed.<\/p>\n<p><strong>Smykov\u00e9 nap\u011bt\u00ed: <\/strong><span class=\"katex-eq\" data-katex-display=\"false\">\\Large \\tau=\\frac{8DF}{\\pi d^3}.<\/span><strong><br \/>\n<\/strong><\/p>\n<p>Opraven\u00e9 nap\u011bt\u00ed zdvihu je t\u0159eba vypo\u010d\u00edtat tak\u00e9 pro dynamick\u00e1 zat\u00ed\u017een\u00ed.<\/p>\n<p><strong>Korigovan\u00e9 smykov\u00e9 nap\u011bt\u00ed: <\/strong><span class=\"katex-eq\" data-katex-display=\"false\">\\Large \\tau_{{k}}=k\\tau<\/span><strong><br \/>\n<\/strong><\/p>\n<p><strong>P\u0159\u00edpustn\u00e9 nap\u011bt\u00ed: <\/strong><span class=\"katex-eq\" data-katex-display=\"false\">\\Large \\tau_{{zul}}=0,45 \\cdot R_{{m}}<\/span><\/p>\n<p>St\u00e1vaj\u00edc\u00ed maxim\u00e1ln\u00ed nap\u011bt\u00ed t<sub> n<\/sub> pro nejv\u011bt\u0161\u00ed cestov\u00e1n\u00ed s<sub> n<\/sub> je nastavena na hodnotu rovnaj\u00edc\u00ed se povolen\u00e9mu nap\u011bt\u00ed. K tomu<a href=\"https:\/\/blog.federnshop.com\/relaxation-federn\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Relaxace<\/a> Aby se tomu zabr\u00e1nilo, m\u011blo by se v praxi pou\u017e\u00edt pouze 80% tohoto pojezdu pru\u017einy.<\/p>\n<span class=\"katex-eq\" data-katex-display=\"false\">\\Large s_{{2}}=0,8 \\cdot s_{{n}}<\/span>\n<p>Pro dynamick\u00e1 zat\u00ed\u017een\u00ed nen\u00ed obecn\u011b pou\u017eiteln\u00e9<a href=\"https:\/\/blog.federnshop.com\/dauerfestigkeit\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Hodnoty \u00fanavov\u00e9 pevnosti<\/a> mus\u00ed b\u00fdt specifikov\u00e1no jako<a href=\"https:\/\/blog.federnshop.com\/zugfedern-wissen\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Ohybov\u00e9 body o\u010dka<\/a> doch\u00e1z\u00ed k dal\u0161\u00edm nap\u011bt\u00edm, z nich\u017e n\u011bkter\u00e1 mohou p\u0159ekro\u010dit povolen\u00e1 nap\u011bt\u00ed. Ta\u017en\u00e9 pru\u017einy by proto m\u011bly b\u00fdt pokud mo\u017eno vystaveny statick\u00e9mu zat\u00ed\u017een\u00ed. Pokud nelze zabr\u00e1nit dynamick\u00e9mu nam\u00e1h\u00e1n\u00ed, m\u011blo by to b\u00fdt<a href=\"https:\/\/blog.federnshop.com\/oesenformen-zugfedern\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Odstra\u0148te ohnut\u00e1 o\u010dka a v\u00e1lcovan\u00e9 nebo za\u0161roubovan\u00e9 koncov\u00e9 kusy<\/a> vlo\u017ete e. Zkou\u0161ka \u017eivotnosti za pozd\u011bj\u0161\u00edch provozn\u00edch podm\u00ednek m\u00e1 smysl. Zpevn\u011bn\u00ed povrchu<a href=\"https:\/\/blog.federnshop.com\/kugelstrahlen-metallfedern\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Kuli\u010dkov\u00e1n\u00ed<\/a> nen\u00ed mo\u017en\u00e9 z d\u016fvodu t\u011bsn\u00fdch zat\u00e1\u010dek.<\/p>\n<p>&nbsp;<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Geometricke_vztahy_v_taznych_pruzinach\"><\/span>Geometrick\u00e9 vztahy v ta\u017en\u00fdch pru\u017ein\u00e1ch<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<table width=\"662\">\n<tbody>\n<tr>\n<td width=\"265\">Velikost pru\u017einy<\/td>\n<td width=\"397\">V\u00fdpo\u010dtov\u00e1 rovnice<\/td>\n<\/tr>\n<tr>\n<td width=\"265\">d\u00e9lka t\u011bla<\/td>\n<td width=\"397\">LK = (nt + 1) d<\/td>\n<\/tr>\n<tr>\n<td width=\"265\">Nev\u00e1zan\u00e1 d\u00e9lka<\/td>\n<td width=\"397\">L0 = LK + 2LH<\/td>\n<\/tr>\n<tr>\n<td width=\"265\">V\u00fd\u0161ka o\u010d\u00ed polovina n\u011bmeck\u00e9ho oka<\/td>\n<td width=\"397\">LH = 0,55Di do 0,80Di<\/td>\n<\/tr>\n<tr>\n<td width=\"265\">V\u00fd\u0161ka o\u010d\u00ed cel\u00e9 n\u011bmeck\u00e9 oko<\/td>\n<td width=\"397\">LH = 0,80Di do 1,10Di<\/td>\n<\/tr>\n<tr>\n<td width=\"265\">V\u00fd\u0161ka h\u00e1ku oka<\/td>\n<td width=\"397\">LH &gt; 1,10Di<\/td>\n<\/tr>\n<tr>\n<td width=\"265\">V\u00fd\u0161ka o\u010dka Anglick\u00e9 o\u010dko<\/td>\n<td width=\"397\">LH = 1,10Di<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Je t\u0159eba zohlednit povolen\u00e9 v\u00fdrobn\u00ed tolerance podle DIN 2097.<\/p>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Vypocet_torznich_pruzin_torzni_pruziny\"><\/span>V\u00fdpo\u010det torzn\u00edch pru\u017ein (torzn\u00ed pru\u017einy)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4><span class=\"ez-toc-section\" id=\"Vseobecne-3\"><\/span>V\u0161eobecn\u00e9<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>Spir\u00e1lov\u00e1 v\u00e1lcov\u00e1<a href=\"https:\/\/blog.federnshop.com\/schenkelfedern-torsionsfedern\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Pru\u017einy nohou<\/a> (Torzn\u00ed pru\u017einy) maj\u00ed v podstat\u011b stejn\u00fd tvar jako v\u00e1lcov\u00e9<a href=\"https:\/\/blog.federnshop.com\/druckfedern\/\" target=\"_blank\" rel=\"noopener noreferrer\"> tlak<\/a> &#8211; a<a href=\"https:\/\/blog.federnshop.com\/zugfedern\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Ta\u017en\u00e9 pru\u017einy<\/a> , ale s v\u00fdjimkou konce pru\u017einy. Ty jsou ohnuty ve tvaru nohy, aby se umo\u017enilo t\u011blu pru\u017einy ot\u00e1\u010det se kolem osy pru\u017einy. To znamen\u00e1, \u017ee existuje velmi mnoho r\u016fzn\u00fdch oblast\u00ed pou\u017eit\u00ed, nap\u0159\u00edklad jako vratn\u00e9 nebo z\u00e1v\u011bsn\u00e9 pru\u017einy. Zkrutn\u00e1 pru\u017eina by m\u011bla b\u00fdt namontov\u00e1na na vodic\u00ed trn a zat\u00ed\u017een\u00ed by m\u011blo p\u016fsobit pouze ve sm\u011bru nav\u00edjen\u00ed. Zde je zmen\u0161en vnit\u0159n\u00ed pr\u016fm\u011br. Pru\u017einy jsou obvykle sto\u010deny bez rozte\u010de. Pokud je v\u0161ak t\u0159en\u00ed absolutn\u011b ne\u017e\u00e1douc\u00ed, lze torzn\u00ed pru\u017einy vyrobit tak\u00e9 s rozte\u010d\u00ed c\u00edvky. V p\u0159\u00edpad\u011b dynamick\u00e9ho zat\u00ed\u017een\u00ed je t\u0159eba zajistit, aby na konc\u00edch pru\u017einy nebyly \u017e\u00e1dn\u00e9 ostr\u00e9 ohyby, aby se zabr\u00e1nilo nep\u0159edv\u00eddateln\u00fdm \u0161pi\u010dk\u00e1m nap\u011bt\u00ed.<\/p>\n<p>&nbsp;<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Vypoctove_vzorce_pro_valcove_torzni_pruziny_Torzni_pruziny\"><\/span><a href=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Gutekunst_Schenkelfedern_Formeln_2015.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">V\u00fdpo\u010dtov\u00e9 vzorce pro v\u00e1lcov\u00e9 torzn\u00ed pru\u017einy<\/a> (Torzn\u00ed pru\u017einy)<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>V\u00fdpo\u010det je zalo\u017een na pokynech EN 13906-3: 2001:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2855\" src=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Schenkelfeder_technisch.jpg\" alt=\"Teoretick\u00fd diagram pru\u017ein nohy | Gutekunst pe\u0159\u00ed\" width=\"1053\" height=\"843\" data-wp-pid=\"2855\" srcset=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Schenkelfeder_technisch.jpg 1053w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Schenkelfeder_technisch-300x240.jpg 300w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Schenkelfeder_technisch-768x615.jpg 768w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Schenkelfeder_technisch-1024x820.jpg 1024w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Schenkelfeder_technisch-600x480.jpg 600w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Schenkelfeder_technisch-150x120.jpg 150w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Schenkelfeder_technisch-400x320.jpg 400w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Schenkelfeder_technisch-200x160.jpg 200w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Schenkelfeder_technisch-800x640.jpg 800w\" sizes=\"auto, (max-width: 1053px) 100vw, 1053px\" \/><\/p>\n<p>Obr\u00e1zek: Teoretick\u00fd diagram torzn\u00ed pru\u017einy \/ torzn\u00ed pru\u017einy<\/p>\n<p>&nbsp;<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Dukaz_funkce_torznich_pruzin_torzni_pruziny\"><\/span>D\u016fkaz funkce torzn\u00edch pru\u017ein (torzn\u00ed pru\u017einy)<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><strong>Rychlost to\u010div\u00e9ho momentu pru\u017einy: <\/strong><span class=\"katex-eq\" data-katex-display=\"false\">\\Large R_{M}=\\frac{M}{\\alpha}=\\frac{d^4E}{3667Dn}<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><strong>Jarn\u00ed okam\u017eik: <\/strong><span class=\"katex-eq\" data-katex-display=\"false\">\\Large M=FR_{H}=\\frac{d^4E\\alpha}{3667Dn}<\/span><strong><br \/>\n<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u00dahel nato\u010den\u00ed: <\/strong><span class=\"katex-eq\" data-katex-display=\"false\">\\Large \\alpha=\\frac{3667DMn}{Ed^4}<\/span><strong><br \/>\n<\/strong><\/p>\n<p>&nbsp;<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Dukaz_pevnosti_torznich_pruzin_torzni_pruziny\"><\/span>D\u016fkaz pevnosti torzn\u00edch pru\u017ein (torzn\u00ed pru\u017einy)<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>St\u00e1vaj\u00edc\u00ed ohybov\u00e9 nap\u011bt\u00ed se stanov\u00ed a porovn\u00e1 s p\u0159\u00edpustn\u00fdm nap\u011bt\u00edm. V p\u0159\u00edpad\u011b dynamick\u00e9ho zat\u00ed\u017een\u00ed je nutn\u00e9 pro srovn\u00e1n\u00ed znovu pou\u017e\u00edt opraven\u00e9 nap\u011bt\u00ed.<\/p>\n<p><strong>Nap\u011bt\u00ed v ohybu: <\/strong><span class=\"katex-eq\" data-katex-display=\"false\">\\Large \\sigma=\\frac{32M}{\\pi d^3}<\/span><\/p>\n<p><strong>Opraven\u00e9 nap\u011bt\u00ed v ohybu: <\/strong><span class=\"katex-eq\" data-katex-display=\"false\">\\Large \\sigma_{{q}}=q \\sigma<\/span><strong><br \/>\n<\/strong><\/p>\n<p>kde plat\u00ed q:<\/p>\n<span class=\"katex-eq\" data-katex-display=\"false\">\\Large q=\\frac{\\frac{D}{d}+0,07}{\\frac{D}{d}-0,75}<\/span>\n<p>&nbsp;<\/p>\n<p><strong>P\u0159\u00edpustn\u00e9 nap\u011bt\u00ed v ohybu: <\/strong><span class=\"katex-eq\" data-katex-display=\"false\">\\Large \\sigma_{{zul}}=0,7Rm<\/span><strong><br \/>\n<\/strong><\/p>\n<p>V p\u0159\u00edpad\u011b dynamick\u00e9ho zat\u00ed\u017een\u00ed je spodn\u00ed a horn\u00ed nap\u011bt\u00ed (t<sub> k<\/sub> 1 a t<sub> k<\/sub> 2) p\u0159\u00edslu\u0161n\u00e9ho zdvihu lze ur\u010dit. Rozd\u00edl je v zdvihov\u00e9m nap\u011bt\u00ed. Horn\u00ed nap\u011bt\u00ed i nap\u011bt\u00ed zdvihu nesm\u00ed p\u0159ekro\u010dit odpov\u00eddaj\u00edc\u00ed p\u0159\u00edpustn\u00e9 hodnoty. U dr\u00e1t\u016f z pru\u017einov\u00e9 oceli je lze naj\u00edt v diagramech \u00fanavov\u00e9 pevnosti v EN 13906-3: 2001. Pokud nap\u011bt\u00ed vydr\u017e\u00ed toto srovn\u00e1n\u00ed, je pru\u017eina odoln\u00e1 proti \u00fanav\u011b s cyklem mezn\u00edho zat\u00ed\u017een\u00ed 10<sup>7<\/sup> .<\/p>\n<p>&nbsp;<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Geometricke_vztahy_v_torznich_pruzinach_torzni_pruziny\"><\/span>Geometrick\u00e9 vztahy v torzn\u00edch pru\u017ein\u00e1ch (torzn\u00ed pru\u017einy)<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<table>\n<tbody>\n<tr>\n<td width=\"416\">Velikost pru\u017einy<\/td>\n<td width=\"246\">V\u00fdpo\u010dtov\u00e1 rovnice<\/td>\n<\/tr>\n<tr>\n<td width=\"416\">Zmen\u0161en\u00ed vnit\u0159n\u00edho pr\u016fm\u011bru p\u0159i maxim\u00e1ln\u00edm zat\u00ed\u017een\u00ed<\/td>\n<td width=\"246\"><span class=\"katex-eq\" data-katex-display=\"false\">\\Large Di_{n}=\\frac{Dn}{n+\\frac{\\alpha}{360}}-d<\/span><\/td>\n<\/tr>\n<tr>\n<td width=\"416\">Nezat\u00ed\u017een\u00e1 d\u00e9lka t\u011bla<\/td>\n<td width=\"246\"><span class=\"katex-eq\" data-katex-display=\"false\">\\Large Lk=(n+1,5)d<\/span><\/td>\n<\/tr>\n<tr>\n<td width=\"416\">D\u00e9lka t\u011bla v maxim\u00e1ln\u011b zat\u00ed\u017een\u00e9m stavu<\/td>\n<td width=\"246\"><span class=\"katex-eq\" data-katex-display=\"false\">\\Large Lk_{n}=(n+1,5+\\frac{\\alpha}{360})d<\/span><\/td>\n<\/tr>\n<tr>\n<td width=\"416\">Pojezdov\u00e1 dr\u00e1ha<\/td>\n<td width=\"246\"><span class=\"katex-eq\" data-katex-display=\"false\">\\Large s_{n}= \\frac{\\alpha_{n}R_{H}}{57,3}<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Krom\u011b toho je t\u0159eba zohlednit v\u00fdrobn\u00ed tolerance podle DIN 2194.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Shrnut\u00ed \u010dl\u00e1nku &#8222;N\u00e1vrh kovov\u00e9 pru\u017einy&#8220;, kter\u00fd se skl\u00e1d\u00e1 z<a href=\"https:\/\/blog.federnshop.com\/auslegung-metallfedern-grundlagen\/\" target=\"_blank\" rel=\"noopener noreferrer\"> \u010c\u00e1st 1 \u201eZ\u00e1klady\u201c<\/a> a \u010d\u00e1st 2 \u201eV\u00fdpo\u010det\u201c lze tak\u00e9 st\u00e1hnout z webu<a href=\"https:\/\/www.federnshop.com\/download\/pdf\/Gutekunst-Federn-1x1-2013-E.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"> Gutekunst pru\u017einy 1&#215;1<\/a> .<\/strong><\/p>\n<p>Pokud byste ho pot\u0159ebovali<a href=\"https:\/\/blog.federnshop.com\/massdaten-federauslegung\/\" target=\"_blank\" rel=\"noopener noreferrer\"> individu\u00e1ln\u00ed design pru\u017einy<\/a> po\u0161lete n\u00e1m e-mailem kl\u00ed\u010dov\u00e1 data pro kovovou pru\u017einu, kterou pot\u0159ebujete<a href=\"mailto:service@federnshop.com\"> technik@gutekunst-co.com<\/a> , kontaktujte na\u0161e technologick\u00e9 odd\u011blen\u00ed telefonicky na (+49) 035 877 227-11 nebo pou\u017eijte na<a href=\"https:\/\/www.federnshop.com\"> https:\/\/www.federnshop.com<\/a> the<a href=\"https:\/\/blog.federnshop.com\/neues-federnberechnungsprogramm\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Program v\u00fdpo\u010dtu pru\u017ein Gutekunst WinFSB<\/a> pro bezplatn\u00fd v\u00fdpo\u010det tla\u010dn\u00fdch pru\u017ein, ta\u017en\u00fdch pru\u017ein a torzn\u00edch pru\u017ein.<\/p>\n<p>&nbsp;<\/p>\n<p><em>Dodate\u010dn\u00e9 informace:<\/em><\/p>\n<ul>\n<li><a href=\"https:\/\/blog.federnshop.com\/druckfedern-auslegung-video\/\" target=\"_blank\" rel=\"noopener noreferrer\">Design tla\u010dn\u00e9 pru\u017einy (video)<\/a><\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/blog.federnshop.com\/zugfedern-auslegung-video\/\" target=\"_blank\" rel=\"noopener noreferrer\">N\u00e1vrh ta\u017en\u00fdch pru\u017ein (video)<\/a><\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/blog.federnshop.com\/auslegung-metallfedern-grundlagen\/\" target=\"_blank\" rel=\"noopener noreferrer\">N\u00e1vrh kovov\u00fdch pru\u017ein &#8211; \u010c\u00e1st 1 &#8222;Z\u00e1klady&#8220;<\/a><\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/blog.federnshop.com\/massdaten-federauslegung\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u00dadaje o rozm\u011brech pro n\u00e1vrh pru\u017einy<\/a><\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/blog.federnshop.com\/neues-federnberechnungsprogramm\/\">Jarn\u00ed v\u00fdpo\u010detn\u00ed program WinFSB 8<\/a><\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/blog.federnshop.com\/federstahldraht\/\" target=\"_blank\" rel=\"noopener noreferrer\">Pru\u017einov\u00e9 ocelov\u00e9 dr\u00e1ty a jejich vlastnosti<\/a><\/li>\n<\/ul>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>V prvn\u00ed \u010d\u00e1sti t\u00e9to dvoud\u00edln\u00e9 s\u00e9rie m\u00e1 Gutekunst Federn o Z\u00e1klady pru\u017einov\u00e9ho designu informovan\u00fd. V t\u00e9to druh\u00e9 \u010d\u00e1sti najdete konkr\u00e9tn\u00ed v\u00fdpo\u010dtov\u00e1 data pro n\u00e1vrh Tla\u010dn\u00e9 pru\u017einy , Ta\u017en\u00e9 pru\u017einy a Pru\u017einy nohou (Torzn\u00ed pru\u017einy). To je tak\u00e9 k dispozici pro<\/p>\n","protected":false},"author":4,"featured_media":6725,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[919,558,925,922,453,920,452],"tags":[1516,608,1501,1517,610,609],"class_list":["post-6714","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dratene-pruziny","category-prumysl","category-specialni-pruziny","category-tazne-pruziny","category-tiskova-zprava","category-tlacne-pruziny","category-znalost","tag-berechnungsformeln-cs","tag-druckfedern-cs","tag-federberechnung-cs","tag-formeln-cs","tag-schenkelfedern-cs","tag-zugfedern-cs"],"_links":{"self":[{"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/posts\/6714","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/comments?post=6714"}],"version-history":[{"count":10,"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/posts\/6714\/revisions"}],"predecessor-version":[{"id":11248,"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/posts\/6714\/revisions\/11248"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/media\/6725"}],"wp:attachment":[{"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/media?parent=6714"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/categories?post=6714"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/tags?post=6714"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}