{"id":8705,"date":"2025-06-19T09:53:40","date_gmt":"2025-06-19T09:53:40","guid":{"rendered":"https:\/\/sinoextrud.com\/?p=8705"},"modified":"2025-06-19T10:02:06","modified_gmt":"2025-06-19T10:02:06","slug":"jak-dokoncit-180-ohybani-hlinikoveho-vylisku","status":"publish","type":"post","link":"https:\/\/sinoextrud.com\/cs\/how-to-complete-180-bending-aluminum-extrusion\/","title":{"rendered":"Jak dokon\u010dit 180\u00b0 oh\u00fdb\u00e1n\u00ed hlin\u00edkov\u00e9ho v\u00fdlisku?"},"content":{"rendered":"

\"stroje
proces tv\u00e1\u0159en\u00ed skla<\/figcaption><\/figure>\n<\/p>\n

Jednou jsem p\u0159i pokusu o ohyb o 180\u00b0 bez opory zlomil hlin\u00edkov\u00fd profil. Nau\u010dil jsem se to natvrdo - t\u011bsn\u00e9 oblouky pot\u0159ebuj\u00ed pl\u00e1nov\u00e1n\u00ed, n\u00e1stroje a techniku.<\/p>\n

Chcete-li dokon\u010dit ohyb hlin\u00edkov\u00fdch v\u00fdlisk\u016f o 180\u00b0, pou\u017eijte oh\u00fdb\u00e1n\u00ed s rota\u010dn\u00edm ta\u017een\u00edm pomoc\u00ed trn\u016f, pou\u017eijte m\u00edrn\u00e9 teplo a dodr\u017eujte spr\u00e1vn\u00fd polom\u011br ohybu.<\/strong><\/p>\n

Poj\u010fme se jednotliv\u00fdm ot\u00e1zk\u00e1m v\u011bnovat hloub\u011bji, abychom v\u00e1m pomohli dos\u00e1hnout konzistentn\u00edch v\u00fdsledk\u016f bez trhlin.<\/p>\n

\n

Jak\u00e1 je nejlep\u0161\u00ed metoda pro 180\u00b0 ohyby hlin\u00edkov\u00fdch profil\u016f?<\/h2>\n

R\u016fzn\u00e9 n\u00e1stroje vyhovuj\u00ed r\u016fzn\u00fdm pot\u0159eb\u00e1m. Zde je n\u00e1vod, jak vybrat spr\u00e1vnou metodu oh\u00fdb\u00e1n\u00ed:<\/p>\n\n\n\n\n\n\n\n\n
Metoda oh\u00fdb\u00e1n\u00ed<\/th>\nNejlep\u0161\u00ed pro<\/th>\nPovrch a p\u0159esnost<\/th>\n<\/tr>\n<\/thead>\n
Rota\u010dn\u00ed oh\u00fdb\u00e1n\u00ed<\/td>\nT\u011bsn\u00e9 180\u00b0 ohyby, mal\u00e9 polom\u011bry<\/td>\nVysok\u00e1 p\u0159esnost, hladk\u00fd chod<\/td>\n<\/tr>\n
Oh\u00fdb\u00e1n\u00ed rol\u00ed<\/td>\nOblouky s velk\u00fdm polom\u011brem, m\u00edrn\u00e9 k\u0159ivky<\/td>\nDobr\u00fd, m\u00edrn\u011b pru\u017en\u00fd<\/td>\n<\/tr>\n
Tla\u010dn\u00e9 (berann\u00ed) oh\u00fdb\u00e1n\u00ed<\/td>\nJednoduch\u00e9 segmenty 180\u00b0<\/td>\nSt\u0159edn\u011b t\u011b\u017ek\u00e9, riziko zna\u010dek<\/td>\n<\/tr>\n
Tvarov\u00e1n\u00ed pr\u016ftahem<\/td>\nDlouh\u00e9 jemn\u00e9 oblouky, vysok\u00e1 kontrola<\/td>\nVynikaj\u00edc\u00ed tvarov\u00e1 st\u00e1lost<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Rota\u010dn\u00ed ta\u017een\u00ed je nejvhodn\u011bj\u0161\u00ed pro ostr\u00e9 180\u00b0 ohyby. Podep\u00edr\u00e1 profil trnem uvnit\u0159 oblouku, \u010d\u00edm\u017e zabra\u0148uje zborcen\u00ed nebo prasknut\u00ed st\u011bn.<\/p>\n

<\/svg> Rota\u010dn\u00ed oh\u00fdb\u00e1n\u00ed je nejlep\u0161\u00ed pro t\u011bsn\u00e9 180\u00b0 ohyby hlin\u00edkov\u00fdch v\u00fdlisk\u016f.<\/b>Pravda<\/span><\/p>

Nab\u00edz\u00ed p\u0159esn\u00e9 ovl\u00e1d\u00e1n\u00ed, hladk\u00fd povrch a podporuje \u00fazk\u00e9 polom\u011bry pomoc\u00ed trn\u016f.<\/p><\/div>
\n

<\/svg> T\u0159\u00edv\u00e1lcov\u00e9 oh\u00fdb\u00e1n\u00ed je ide\u00e1ln\u00ed pro oh\u00fdb\u00e1n\u00ed s velmi mal\u00fdm polom\u011brem 180\u00b0.<\/b>False<\/span><\/p>

T\u0159\u00edv\u00e1lcov\u00e9 oh\u00fdb\u00e1n\u00ed se hod\u00ed pro ohyby s v\u011bt\u0161\u00edm polom\u011brem, nikoli pro ostr\u00e9 180\u00b0 oblouky.<\/p><\/div><\/p>\n

\n

M\u016f\u017ee b\u00fdt vytla\u010dov\u00e1n\u00ed p\u0159edoh\u00fdb\u00e1no nebo vy\u017eaduje sekund\u00e1rn\u00ed operaci?<\/h2>\n

Byl jsem dot\u00e1z\u00e1n, zda m\u016f\u017eeme tvar 180\u00b0 extrudovat p\u0159\u00edmo. Odpov\u011b\u010f je v\u017edy z\u00e1porn\u00e1.<\/p>\n

Hlin\u00edkov\u00fd v\u00fdlisek mus\u00ed b\u00fdt rovn\u00fd. Oh\u00fdb\u00e1n\u00ed prob\u00edh\u00e1 v\u017edy v sekund\u00e1rn\u00ed operaci.<\/strong><\/p>\n

Vytla\u010dov\u00e1n\u00edm k\u0159ivky by vznikla nerovnom\u011brn\u00e1 tlou\u0161\u0165ka st\u011bny, slab\u00e1 m\u00edsta a probl\u00e9my s n\u00e1stroji. M\u00edsto toho vytla\u010dujeme profil rovn\u011b a pot\u00e9 jej oh\u00fdb\u00e1me na stroji.<\/p>\n

To zaji\u0161\u0165uje \u010dist\u00fd tvar, p\u0159esn\u00e9 rozm\u011bry a kontrolu celistvosti st\u011bn.<\/p>\n

<\/svg> Hlin\u00edkov\u00e9 vytla\u010dovac\u00ed formy mohou vyr\u00e1b\u011bt 180\u00b0 ohyby p\u0159\u00edmo bez dal\u0161\u00edch operac\u00ed.<\/b>False<\/span><\/p>

V\u00fdlisky mus\u00ed b\u00fdt rovn\u00e9; oh\u00fdb\u00e1n\u00ed se prov\u00e1d\u00ed dodate\u010dn\u011b pomoc\u00ed k tomu ur\u010den\u00fdch metod.<\/p><\/div>\n

\n

Jak se vyhnout prask\u00e1n\u00ed p\u0159i t\u011bsn\u00fdch ohybech?<\/h2>\n

T\u011bsn\u00e9 ohyby nam\u00e1haj\u00ed vn\u011bj\u0161\u00ed polom\u011br hlin\u00edku. Trhliny se objev\u00ed, pokud:<\/p>\n

    \n
  • Polom\u011br ohybu je p\u0159\u00edli\u0161 mal\u00fd<\/li>\n
  • Slitina je p\u0159\u00edli\u0161 k\u0159ehk\u00e1<\/li>\n
  • Neexistuje \u017e\u00e1dn\u00e1 intern\u00ed podpora<\/li>\n<\/ul>\n

    Abyste zabr\u00e1nili prask\u00e1n\u00ed, pou\u017eijte spr\u00e1vn\u00fd polom\u011br, p\u0159idejte trny, profil m\u00edrn\u011b zah\u0159ejte a oh\u00fdbejte pomalu.<\/strong><\/p>\n

    M\u016fj kontroln\u00ed seznam pro prevenci prasklin:<\/h3>\n
      \n
    1. Minim\u00e1ln\u00ed polom\u011br<\/strong>: Dodr\u017eujte pravidla pro jednotliv\u00e9 slitiny. U slitiny 6061-T6 nep\u0159ekra\u010dujte tlou\u0161\u0165ku st\u011bny 2,5x.<\/li>\n
    2. Podpora s trnem<\/strong>: Zejm\u00e9na pro dut\u00e9 nebo tenkost\u011bnn\u00e9 v\u00fdlisky.<\/li>\n
    3. P\u0159edeh\u0159\u00edvac\u00ed z\u00f3na<\/strong>: Zvy\u0161te teplotu na ~200-300?\u00b0C, abyste zlep\u0161ili ta\u017enost.<\/li>\n
    4. Pomal\u00e1 rychlost ohybu<\/strong>: Nechte hlin\u00edk postupn\u011b deformovat.<\/li>\n
    5. P\u0159edklon pro kompenzaci zp\u011btn\u00e9ho r\u00e1zu<\/strong>: S t\u00edm mohou pomoci CNC stroje.<\/li>\n<\/ol>\n\n\n\n\n\n\n\n\n\n
      P\u0159\u00ed\u010dina prask\u00e1n\u00ed<\/th>\nMetoda prevence<\/th>\n<\/tr>\n<\/thead>\n
      P\u0159\u00edli\u0161 mal\u00fd polom\u011br<\/td>\nPou\u017eijte spr\u00e1vn\u00fd minim\u00e1ln\u00ed polom\u011br<\/td>\n<\/tr>\n
      Z\u0159\u00edcen\u00ed st\u011bny<\/td>\nVlo\u017een\u00ed trnu nebo vnit\u0159n\u00edho st\u011bra\u010de<\/td>\n<\/tr>\n
      Nap\u011bt\u00ed v ohybu za studena<\/td>\nPou\u017eit\u00ed lok\u00e1ln\u00edho tepla<\/td>\n<\/tr>\n
      P\u0159\u00edli\u0161 rychl\u00e9 oh\u00fdb\u00e1n\u00ed<\/td>\nPou\u017e\u00edvejte pomalou, kontrolovanou rychlost ohybu<\/td>\n<\/tr>\n
      \u0160patn\u011b odhadnut\u00fd Springback<\/td>\nM\u00edrn\u00e9 p\u0159eto\u010den\u00ed nebo CNC korekce<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      <\/svg> Pou\u017eit\u00ed trnu eliminuje prask\u00e1n\u00ed p\u0159i t\u011bsn\u00fdch ohybech.<\/b>False<\/span><\/p>

      Podp\u011bra trnu pom\u00e1h\u00e1, ale je tak\u00e9 zapot\u0159eb\u00ed spr\u00e1vn\u00fd polom\u011br, teplo a postup.<\/p><\/div>
      \n

      <\/svg> M\u00edrn\u00e9 zah\u0159\u00e1t\u00ed hlin\u00edku p\u0159ed oh\u00fdb\u00e1n\u00edm zlep\u0161uje ta\u017enost a omezuje prask\u00e1n\u00ed.<\/b>Pravda<\/span><\/p>

      M\u00edrn\u00e9 teplo kolem ohybu zvy\u0161uje pru\u017enost a zabra\u0148uje zlomenin\u00e1m.<\/p><\/div><\/p>\n

      \n

      Jak\u00e9 n\u00e1stroje jsou pot\u0159eba pro p\u0159esn\u00e9 ohyby o 180\u00b0?<\/h2>\n

      K \u010dist\u00e9mu a p\u0159esn\u00e9mu oh\u00fdb\u00e1n\u00ed hlin\u00edku budete pot\u0159ebovat kombinaci stroj\u016f a n\u00e1stroj\u016f:<\/p>\n\n\n\n\n\n\n\n\n\n\n
      N\u00e1stroj<\/th>\n\u00da\u010del<\/th>\n<\/tr>\n<\/thead>\n
      Oh\u00fdba\u010dka s rota\u010dn\u00edm tahem<\/td>\nT\u011bsn\u00e9 180\u00b0 ohyby, vysok\u00e1 p\u0159esnost<\/td>\n<\/tr>\n
      Trs\u00e1tka a st\u00edrac\u00ed matrice<\/td>\nVnit\u0159n\u00ed podp\u011bra zabra\u0148uj\u00edc\u00ed ov\u00e1ln\u00e9mu zkreslen\u00ed<\/td>\n<\/tr>\n
      Roll Bender<\/td>\nOblouky s velk\u00fdm polom\u011brem (ne t\u011bsn\u00e9 180\u00b0)<\/td>\n<\/tr>\n
      Tvarovac\u00ed lis<\/td>\nP\u0159esn\u00e9 ovl\u00e1d\u00e1n\u00ed dlouh\u00e9ho oblouku<\/td>\n<\/tr>\n
      P\u0159edeh\u0159\u00edvac\u00ed ho\u0159\u00e1k\/palivo<\/td>\nZ\u00f3na tepeln\u00e9ho profilu pro zm\u011bk\u010den\u00ed materi\u00e1lu<\/td>\n<\/tr>\n
      Syst\u00e9m \u0159\u00edzen\u00ed \u00fahlu CNC<\/td>\nkoriguje zp\u011btn\u00fd r\u00e1z, zaji\u0161\u0165uje rovnom\u011brn\u00fd \u00fahel<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      N\u011bkte\u0159\u00ed oper\u00e1to\u0159i pou\u017e\u00edvaj\u00ed pro n\u00edzk\u00e9 objemy nebo manu\u00e1ln\u00ed pot\u0159eby ru\u010dn\u00ed oh\u00fdba\u010dky s trnov\u00fdmi vlo\u017ekami, ale to je bezpe\u010dn\u00e9 pouze pro m\u011bkk\u00e9 slitiny a tenkost\u011bnn\u00e9 profily.<\/p>\n

      <\/svg> T\u0159meny se pou\u017e\u00edvaj\u00ed p\u0159i rota\u010dn\u00edm oh\u00fdb\u00e1n\u00ed k podep\u0159en\u00ed vnit\u0159n\u00ed strany t\u011bsn\u00fdch hlin\u00edkov\u00fdch ohyb\u016f.<\/b>Pravda<\/span><\/p>

      T\u0159meny zabra\u0148uj\u00ed zborcen\u00ed vnit\u0159n\u00ed st\u011bny a sni\u017euj\u00ed riziko vzniku trhlin.<\/p><\/div>
      \n

      <\/svg> V\u0161echny hlin\u00edkov\u00e9 profily m\u016f\u017eete oh\u00fdbat ru\u010dn\u011b, ani\u017e by do\u0161lo k jejich prasknut\u00ed, pokud se tak d\u011bje pomalu.<\/b>False<\/span><\/p>

      N\u011bkter\u00e9 slitiny a siln\u00e9 profily pot\u0159ebuj\u00ed mechanickou podporu a teplo.<\/p><\/div><\/p>\n

      \n

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

      180\u00b0 ohyby hlin\u00edkov\u00fdch v\u00fdlisk\u016f vy\u017eaduj\u00ed pl\u00e1nov\u00e1n\u00ed. Pro \u00fazk\u00e9 oblouky pou\u017eijte oh\u00fdb\u00e1n\u00ed s rota\u010dn\u00edm tahem, podep\u0159ete profil uvnit\u0159, zah\u0159ejte ho a oh\u00fdbejte pomalu. Vyhn\u011bte se p\u0159\u00edm\u00e9mu oh\u00fdb\u00e1n\u00ed b\u011bhem vytla\u010dov\u00e1n\u00ed - v\u017edy pou\u017eijte sekund\u00e1rn\u00ed operaci.<\/p>","protected":false},"excerpt":{"rendered":"

      glass forming process I once cracked an aluminum profile trying a 180\u00b0 bend without support. I learned the hard way\u2014tight curves need planning, tools, and technique. To complete a 180\u00b0 bend in aluminum extrusions, use rotary-draw bending with mandrels, apply moderate heat, and maintain the correct bend radius. Let’s go deeper into each question to […]<\/p>\n","protected":false},"author":6,"featured_media":8706,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"none","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"both","_seopress_redirections_param":"","_seopress_redirections_type":301,"_seopress_analysis_target_kw":"","_seopress_news_disabled":"","_seopress_video_disabled":"","_seopress_video":[],"_seopress_pro_schemas_manual":[],"_seopress_pro_rich_snippets_disable_all":"","_seopress_pro_rich_snippets_disable":[],"_seopress_pro_schemas":[],"footnotes":""},"categories":[1],"tags":[],"class_list":["post-8705","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\/8705","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=8705"}],"version-history":[{"count":0,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/posts\/8705\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/media\/8706"}],"wp:attachment":[{"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/media?parent=8705"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/categories?post=8705"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/tags?post=8705"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}