{"id":9135,"date":"2025-06-25T02:25:04","date_gmt":"2025-06-25T02:25:04","guid":{"rendered":"https:\/\/sinoextrud.com\/?p=9135"},"modified":"2025-06-25T02:25:04","modified_gmt":"2025-06-25T02:25:04","slug":"zalezi-na-vyberu-tvaru-hlinikovych-vylisku","status":"publish","type":"post","link":"https:\/\/sinoextrud.com\/cs\/does-the-choice-of-aluminum-extrusion-shapes-matter\/","title":{"rendered":"Z\u00e1le\u017e\u00ed na v\u00fdb\u011bru tvar\u016f hlin\u00edkov\u00fdch v\u00fdlisk\u016f?"},"content":{"rendered":"

\"Tvar
Profily ve tvaru T a slo\u017eit\u00e9 profily vy\u017eaduj\u00ed pe\u010dlivou struktur\u00e1ln\u00ed anal\u00fdzu.<\/figcaption><\/figure>\n<\/p>\n

Jednou jsem navrhl r\u00e1m s pou\u017eit\u00edm slo\u017eit\u00e9ho v\u00fdlisku ve tvaru T. V CADu to vypadalo dob\u0159e, ale v praxi se tenk\u00e9 nohy p\u0159i zat\u00ed\u017een\u00ed oh\u00fdbaly. Tato zku\u0161enost m\u011b nau\u010dila, \u017ee na tvaru z\u00e1le\u017e\u00ed.<\/p>\n

Tvar v\u00fdlisku p\u0159\u00edmo ovliv\u0148uje jeho pevnost, hmotnost, cenu a snadnost v\u00fdroby.<\/strong><\/p>\n

Prozkoumejme faktory, kter\u00e9 je t\u0159eba p\u0159i n\u00e1vrhu tvaru zohlednit, jak profily ovliv\u0148uj\u00ed v\u00fdkon, optimalizaci n\u00e1klad\u016f a snadnost v\u00fdroby.<\/p>\n

1. Jak\u00e9 faktory ovliv\u0148uj\u00ed tvarov\u00e9 \u0159e\u0161en\u00ed hlin\u00edkov\u00fdch v\u00fdlisk\u016f?<\/h2>\n

\"Sk\u0159\u00ed\u0148ov\u00e9
Profily jako I-nosn\u00edky a \u010dtvercov\u00e9 trubky zvy\u0161uj\u00ed tuhost a sni\u017euj\u00ed spot\u0159ebu materi\u00e1lu.<\/figcaption><\/figure>\n<\/p>\n

N\u00e1vrh v\u00fdlisku za\u010d\u00edn\u00e1 funkc\u00ed, kterou mus\u00ed plnit, a pot\u00e9 se zva\u017euj\u00ed technick\u00e1, n\u00e1kladov\u00e1 a v\u00fdrobn\u00ed omezen\u00ed.<\/p>\n

Mezi kl\u00ed\u010dov\u00e9 faktory pat\u0159\u00ed: po\u017eadavky na pevnost, v\u00fdrobn\u00ed limity, povrchov\u00e1 \u00faprava, zp\u016fsob mont\u00e1\u017ee a cenov\u00e1 omezen\u00ed.<\/strong><\/p>\n

Hlavn\u00ed vlivy na design tvar\u016f<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Faktor<\/th>\nCo to znamen\u00e1<\/th>\n<\/tr>\n<\/thead>\n
Podm\u00ednky zat\u00ed\u017een\u00ed<\/td>\nKolik ohybu, stla\u010den\u00ed, tahu je pot\u0159eba<\/td>\n<\/tr>\n
Tlou\u0161\u0165ka st\u011bny<\/td>\nNesm\u00ed b\u00fdt p\u0159\u00edli\u0161 tenk\u00e9 ani p\u0159\u00edli\u0161 tlust\u00e9<\/td>\n<\/tr>\n
Slo\u017eitost profilu<\/td>\nJednoduch\u00e9 tvary se vytla\u010duj\u00ed snadn\u011bji a levn\u011bji<\/td>\n<\/tr>\n
Tolerance<\/td>\nP\u0159esnost je d\u016fle\u017eit\u00e1 pro mont\u00e1\u017en\u00ed l\u00edcov\u00e1n\u00ed<\/td>\n<\/tr>\n
Povrchov\u00e1 \u00faprava<\/td>\nZaoblen\u00e9 hrany, men\u0161\u00ed opot\u0159eben\u00ed matrice<\/td>\n<\/tr>\n
Metody spojov\u00e1n\u00ed<\/td>\n\u0158ez\u00e1n\u00ed, sva\u0159ov\u00e1n\u00ed, \u0161roubov\u00e1n\u00ed, upev\u0148ov\u00e1n\u00ed<\/td>\n<\/tr>\n
Estetika<\/td>\nViditeln\u00e9 \u010d\u00e1sti pot\u0159ebuj\u00ed \u010dist\u00e9 linie<\/td>\n<\/tr>\n
Slitina a temperace<\/td>\nN\u011bkter\u00e9 slitiny pot\u0159ebuj\u00ed jednoduch\u00e9 tvary<\/td>\n<\/tr>\n
Kapacita tisku<\/td>\nDlouh\u00e9 nebo \u0161irok\u00e9 tvary vy\u017eaduj\u00ed v\u011bt\u0161\u00ed stroje<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

V jednom projektu jsem zmen\u0161il ostny a z\u00e1\u0159ezy profilu. Zjednodu\u0161ilo to z\u00e1pustku, zkr\u00e1tilo \u010das n\u00e1stroje o 30% a zlep\u0161ilo pr\u016ftok, p\u0159i\u010dem\u017e d\u00edly st\u00e1le dob\u0159e dr\u017eely.<\/p>\n

2. Jak ovliv\u0148uj\u00ed r\u016fzn\u00e9 profily konstruk\u010dn\u00ed vlastnosti?<\/h2>\n

\"Hlin\u00edkov\u00e9
Zjednodu\u0161en\u00ed tvaru pom\u00e1h\u00e1 zkr\u00e1tit dobu v\u00fdroby a sn\u00ed\u017eit n\u00e1klady na n\u00e1stroje<\/figcaption><\/figure>\n<\/p>\n

Geometrie profilu ur\u010duje jeho odolnost proti ohybu, kroucen\u00ed a vybo\u010den\u00ed.<\/p>\n

Pr\u016f\u0159ezy, jako jsou I?nosn\u00edky, kan\u00e1ly a dut\u00e9 sk\u0159\u00edn\u011b, nab\u00edzej\u00ed pevnost s men\u0161\u00edm mno\u017estv\u00edm hlin\u00edku. Jednoduch\u00e9 ploch\u00e9 ty\u010de jsou jednodu\u0161\u0161\u00ed, ale slab\u0161\u00ed.<\/strong><\/p>\n

Typ profilu vs. pevnost<\/h3>\n\n\n\n\n\n\n\n\n\n\n
Typ profilu<\/th>\nSm\u011br s\u00edly<\/th>\nNejlep\u0161\u00ed p\u0159\u00edpady pou\u017eit\u00ed<\/th>\n<\/tr>\n<\/thead>\n
Solid Bar<\/td>\nJednotn\u00e9, ale t\u011b\u017ek\u00e9<\/td>\nJednoduch\u00e9 dr\u017e\u00e1ky nebo v\u00fdpl\u0148ov\u00e9 d\u00edly<\/td>\n<\/tr>\n
Kan\u00e1l\/U?sekce<\/td>\nDobr\u00e1 odolnost proti ohybu<\/td>\nR\u00e1my, kolejnice, konstruk\u010dn\u00ed prvky<\/td>\n<\/tr>\n
I?Beam \/ H?Beam<\/td>\nVysok\u00fd moment setrva\u010dnosti<\/td>\nMostn\u00ed z\u00e1bradl\u00ed, podp\u011bra dlouh\u00e9ho rozp\u011bt\u00ed<\/td>\n<\/tr>\n
Krabice \/ \u010dtvercov\u00e1 trubka<\/td>\nOdolnost proti kroucen\u00ed a ohybu<\/td>\nSk\u0159\u00edn\u011b, r\u00e1my stroj\u016f<\/td>\n<\/tr>\n
Tenkost\u011bnn\u00fd profil<\/td>\nLehk\u00e9 r\u00e1my<\/td>\nOkna, p\u0159\u00ed\u010dky, nestavebn\u00ed<\/td>\n<\/tr>\n
Vlastn\u00ed dutiny Multi?Cavity<\/td>\nSpecifick\u00e9 funkce<\/td>\nDr\u017e\u00e1ky kabel\u016f, HVAC, dopravn\u00edky<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Mechaniky ve h\u0159e<\/h3>\n
    \n
  • Moment setrva\u010dnosti<\/strong> je kl\u00ed\u010dov\u00e1. V\u011bt\u0161\u00ed plocha daleko od st\u0159edu = siln\u011bj\u0161\u00ed na v\u00e1hu. <\/li>\n
  • Tenkost\u011bnn\u00e9<\/strong> tvary \u0161et\u0159\u00ed hmotnost, ale pot\u0159ebuj\u00ed v\u00fdztuhy nebo \u017eebra. <\/li>\n
  • Dut\u00e9 tvary<\/strong> nab\u00edz\u00ed tuhost bez pln\u00e9 hmotnosti.<\/li>\n<\/ul>\n

    U robotick\u00e9 z\u00e1kladny, kterou jsem postavil, se p\u0159echodem z pln\u00fdch desek na krabicov\u00e9 trubky sn\u00ed\u017eila hmotnost r\u00e1mu na polovinu a zachovala se tuhost. Robot se pohyboval rychleji a spot\u0159eboval m\u00e9n\u011b energie.<\/p>\n

    3. M\u016f\u017ee vytla\u010dov\u00e1n\u00ed optimalizovat vyu\u017eit\u00ed materi\u00e1lu a n\u00e1klady?<\/h2>\n

    \"Dut\u00fd
    Profily s hladk\u00fdmi st\u011bnami a vestav\u011bn\u00fdmi dr\u00e1\u017ekami usnad\u0148uj\u00ed v\u00fdrobu.<\/figcaption><\/figure>\n<\/p>\n

    N\u00e1klady na materi\u00e1ly a n\u00e1stroje jsou u projekt\u016f vytla\u010dov\u00e1n\u00ed velk\u00e9. Chytr\u00fd n\u00e1vrh tvaru pom\u00e1h\u00e1 sn\u00ed\u017eit hmotnost a n\u00e1klady a z\u00e1rove\u0148 spl\u0148uje funkci.<\/p>\n

    Dob\u0159e navr\u017een\u00fd profil vyu\u017e\u00edv\u00e1 dostate\u010dn\u00e9 mno\u017estv\u00ed materi\u00e1lu pro zaji\u0161t\u011bn\u00ed pevnosti, ale minimalizuje mno\u017estv\u00ed odpadu a obr\u00e1b\u011bn\u00ed.<\/strong><\/p>\n

    Zp\u016fsoby, jak\u00fdmi tvar \u0161et\u0159\u00ed n\u00e1klady<\/h3>\n
      \n
    • Pou\u017eit\u00ed \u017eeber\/vnit\u0159nost\u00ed<\/strong> m\u00edsto pln\u00e9ho kovu. <\/li>\n
    • Optimalizace tlou\u0161\u0165ky st\u011bny<\/strong>-ani p\u0159\u00edli\u0161 siln\u00fd, ani p\u0159\u00edli\u0161 tenk\u00fd. <\/li>\n
    • Omezit prohlubn\u011b<\/strong> pouze na to, co je pot\u0159eba. <\/li>\n
    • Vyhn\u011bte se ostr\u00fdm roh\u016fm<\/strong>; pot\u0159ebuj\u00ed v\u00edce n\u00e1stroj\u016f a ni\u017e\u0161\u00ed rychlost. <\/li>\n
    • Sn\u00ed\u017een\u00ed slo\u017eitosti matrice<\/strong>-jednoduch\u00e9 tvary stoj\u00ed m\u00e9n\u011b pen\u011bz na stavbu a provoz.<\/li>\n<\/ul>\n

      Tabulka p\u0159\u00edkladu n\u00e1klad\u016f<\/h4>\n\n\n\n\n\n\n\n\n
      Strategie designu<\/th>\n\u00daspora materi\u00e1lu<\/th>\nVliv n\u00e1klad\u016f<\/th>\n<\/tr>\n<\/thead>\n
      P\u0159id\u00e1n\u00ed vnit\u0159n\u00edch \u017eeber<\/td>\n10-20% m\u00e9n\u011b slitiny<\/td>\nMal\u00e1 zm\u011bna kostky<\/td>\n<\/tr>\n
      P\u0159echod z pevn\u00e9 na dutou trubku<\/td>\nSt\u0159ih materi\u00e1lu 50%<\/td>\nPot\u0159eba nov\u00e9 kostky<\/td>\n<\/tr>\n
      Zjednodu\u0161en\u00ed polom\u011bru rohu<\/td>\n15% rychlej\u0161\u00ed b\u011bhy<\/td>\nNi\u017e\u0161\u00ed n\u00e1klady na n\u00e1stroje<\/td>\n<\/tr>\n
      Odstran\u011bn\u00ed dekorativn\u00edch prvk\u016f<\/td>\n8% levn\u011bj\u0161\u00ed \u010dasy b\u011bhu<\/td>\nLevn\u011bj\u0161\u00ed profily<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      V jednom p\u0159\u00edpad\u011b se odstran\u011bn\u00edm ozdobn\u00fdch dr\u00e1\u017eek u\u0161et\u0159il materi\u00e1l 12%. D\u00edl byl st\u00e1le pevn\u00fd a vypadal dob\u0159e. Sn\u00ed\u017eily se i n\u00e1klady na v\u00fdlisek.<\/p>\n

      4. Jak vybrat tvar v\u00fdlisku pro snadnou v\u00fdrobu?<\/h2>\n

      \"Vlastn\u00ed
      Tvarov\u00e9 \u0159e\u0161en\u00ed vytla\u010dov\u00e1n\u00ed vyva\u017euje pevnost, vzhled a vyrobitelnost.<\/figcaption><\/figure>\n<\/p>\n

      V\u00fdroba zahrnuje \u0159ez\u00e1n\u00ed, vrt\u00e1n\u00ed, sva\u0159ov\u00e1n\u00ed, fr\u00e9zov\u00e1n\u00ed a dokon\u010dovac\u00ed pr\u00e1ce. Tvar ovliv\u0148uje, jak snadn\u00e1 nebo obt\u00ed\u017en\u00e1 je tato pr\u00e1ce.<\/p>\n

      Profily s rovn\u00fdmi st\u011bnami, dostate\u010dn\u00fdm prostorem pro n\u00e1stroje a zabudovan\u00fdmi spojovac\u00edmi body usnad\u0148uj\u00ed a zlev\u0148uj\u00ed v\u00fdrobu.<\/strong><\/p>\n

      V\u00fdrobn\u00ed faktory<\/h3>\n
        \n
      • Rovn\u00e9 \u0159ezn\u00e9 plochy<\/strong> zjednodu\u0161it \u0159ez\u00e1n\u00ed pilou nebo n\u016f\u017ekami. <\/li>\n
      • Vestav\u011bn\u00e9 funkce spojov\u00e1n\u00ed<\/strong> (dr\u00e1\u017eky, otvory) se vyhnete dodate\u010dn\u00e9mu vrt\u00e1n\u00ed. <\/li>\n
      • Hladk\u00e9 povrchy<\/strong> pomoc p\u0159i sva\u0159ov\u00e1n\u00ed nebo povrchov\u00e9 \u00faprav\u011b. <\/li>\n
      • Minimum skryt\u00fdch dutin<\/strong> p\u0159estanou pot\u00ed\u017ee p\u0159i obr\u00e1b\u011bn\u00ed nebo \u010di\u0161t\u011bn\u00ed. <\/li>\n
      • Standardn\u00ed \u00fahly<\/strong> (90\u00b0, 45\u00b0) se snadn\u011bji zkracuj\u00ed nebo p\u0159izp\u016fsobuj\u00ed.<\/li>\n<\/ul>\n

        Snadn\u00e9 n\u00e1stroje a obr\u00e1b\u011bn\u00ed<\/h3>\n
          \n
        • Ploch\u00e9 povrchy umo\u017e\u0148uj\u00ed snadn\u00e9 vrt\u00e1n\u00ed nebo z\u00e1vitov\u00e1n\u00ed. <\/li>\n
        • \u010ctvercov\u00e9 nebo obd\u00e9ln\u00edkov\u00e9 trubky se l\u00e9pe up\u00ednaj\u00ed a p\u0159izp\u016fsobuj\u00ed. <\/li>\n
        • Tenk\u00e9 h\u0159\u00eddele nebo \u017eebra se mohou ohnout, pokud nejsou podep\u0159eny.<\/li>\n<\/ul>\n

          Navrhl jsem pouzdro se zacvak\u00e1vac\u00edmi kov\u00e1n\u00edmi ve v\u00fdlisku. Vyhnul jsem se tak vrt\u00e1n\u00ed 10 otvor\u016f na jeden d\u00edl. Mont\u00e1\u017e byla rychlej\u0161\u00ed a d\u016fsledn\u011bj\u0161\u00ed.<\/p>\n

          \n

          Z\u00e1v\u011br<\/h2>\n

          Na volb\u011b spr\u00e1vn\u00e9ho tvaru v\u00fdlisku velmi z\u00e1le\u017e\u00ed. Profil ovliv\u0148uje pevnost, hmotnost, n\u00e1klady a snadnost v\u00fdroby. Profily s vysok\u00fdm momentem setrva\u010dnosti poskytuj\u00ed pevnost p\u0159i ni\u017e\u0161\u00ed hmotnosti. Jednoduch\u00e9 konstrukce \u0161et\u0159\u00ed materi\u00e1l a n\u00e1klady na n\u00e1stroje. Tvary ur\u010den\u00e9 pro mont\u00e1\u017e zjednodu\u0161uj\u00ed v\u00fdrobu. <\/p>\n

          Pe\u010dliv\u00fd v\u00fdb\u011br tvaru p\u0159in\u00e1\u0161\u00ed lep\u0161\u00ed d\u00edly rychleji a levn\u011bji.<\/p>\n

          Ot\u00e1zky typu pravda\/nepravda<\/strong><\/p>\n

          <\/svg> Trubkov\u00e9 nebo \u010dtvercov\u00e9 profily maj\u00ed dobrou odolnost proti ohybu i krutu.<\/b>Pravda<\/span><\/p>

          Dut\u00e9 krabicov\u00e9 tvary rozd\u011bluj\u00ed materi\u00e1l sm\u011brem od st\u0159edu a \u00fa\u010dinn\u011b odol\u00e1vaj\u00ed oh\u00fdb\u00e1n\u00ed a kroucen\u00ed.<\/p><\/div>\n

          <\/svg> Komplexn\u00ed ozdobn\u00e9 dr\u00e1\u017eky ve v\u00fdlisku v\u017edy zvy\u0161uj\u00ed hospod\u00e1rnost.<\/b>False<\/span><\/p>

          Dekorativn\u00ed prvky zvy\u0161uj\u00ed slo\u017eitost v\u00fdsek\u016f a zpomaluj\u00ed v\u00fdrobu, \u010d\u00edm\u017e sp\u00ed\u0161e zvy\u0161uj\u00ed n\u00e1klady, ne\u017e aby je zlep\u0161ovaly.<\/p><\/div>","protected":false},"excerpt":{"rendered":"

          T-shaped and complex profiles require careful structural analysis I once designed a frame using a complex T-shaped extrusion. It looked good on CAD, but in practice the thin legs bent under load. That experience taught me shape matters. The shape of an extrusion directly affects its strength, weight, cost, and ease of making. Let\u2019s explore […]<\/p>\n","protected":false},"author":6,"featured_media":8592,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_seopress_analysis_target_kw":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-9135","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-custom-mold"],"meta_box":{"post-to-quiz_to":[]},"_links":{"self":[{"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/posts\/9135","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/comments?post=9135"}],"version-history":[{"count":0,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/posts\/9135\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/media\/8592"}],"wp:attachment":[{"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/media?parent=9135"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/categories?post=9135"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/tags?post=9135"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}