{"id":822,"date":"2021-09-08T21:46:35","date_gmt":"2021-09-08T21:46:35","guid":{"rendered":"https:\/\/blog.metu.edu.tr\/eresmech\/?page_id=822"},"modified":"2021-09-27T09:06:12","modified_gmt":"2021-09-27T09:06:12","slug":"3-3","status":"publish","type":"page","link":"https:\/\/blog.metu.edu.tr\/eresmech\/mekanizma-teknigi\/ch3\/3-3\/","title":{"rendered":"3-3"},"content":{"rendered":"<div id=\"pl-gb822-69d7dadede6f3\"  class=\"panel-layout\" ><div id=\"pg-gb822-69d7dadede6f3-0\"  class=\"panel-grid panel-no-style\" ><div id=\"pgc-gb822-69d7dadede6f3-0-0\"  class=\"panel-grid-cell\" ><div id=\"panel-gb822-69d7dadede6f3-0-0-0\" class=\"so-panel widget widget_sow-editor panel-first-child panel-last-child widgetopts-SO\" data-index=\"0\" ><div\n\t\t\t\n\t\t\tclass=\"so-widget-sow-editor so-widget-sow-editor-base\"\n\t\t\t\n\t\t>\n<div class=\"siteorigin-widget-tinymce textwidget\">\n\t<h1><b>3.3<\/b> \u00c7ak\u0131\u015fan Noktalar<\/h1>\n<p>Mekanizmalarda bir \u00e7ok rijit cisimden (uzuvdan) olu\u015fan bir sistem vard\u0131r. Bu uzuvlar aras\u0131nda ba\u011f\u0131l hareket, uzuvlar\u0131 birbirlerine ba\u011flayan mafsallar\u0131n serbestlik derecesi ve tipi ile belirlidir. Yukar\u0131da rijit cisimler i\u00e7in elde edilen \u00fc\u00e7 sonuca g\u00f6re her bir uzuv sonsuz boyutlu kabul edilebilece\u011finden krank-biyel mekanizmas\u0131 i\u00e7in \u015fekilde g\u00f6sterildi\u011fi gibi, mekanizmay\u0131 olu\u015fturan uzuvlar\u0131 haf\u0131zam\u0131zda \u00fcst \u00fcste duran sonsuz boyutlu d\u00fczlemlerden olu\u015ftu\u011funu d\u00fc\u015f\u00fcnmemiz gerekir.<\/p>\n<p align=\"center\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-825 aligncenter\" src=\"https:\/\/blog.metu.edu.tr\/eresmech\/files\/2021\/09\/image6-1.gif\" alt=\"\" width=\"454\" height=\"258\" \/><\/p>\n<p>2 uzvunun 1 uzvuna g\u00f6re hareketini inceleyelim. 2 uzvu 1 uzvuna A<sub>0<\/sub>\u00a0noktas\u0131ndan ge\u00e7en bir eksene sahip d\u00f6ner mafsal ile ba\u011fl\u0131 oldu\u011fundan, 2 uzvu 1 uzvuna g\u00f6re sadece d\u00f6nme hareketi yapabilecektir. Mafsal\u0131n \u00e7ap\u0131, uzvun b\u00fcy\u00fckl\u00fc\u011f\u00fc bu ba\u011f\u0131l hareketin \u015feklini hi\u00e7 bir \u015fekilde etkilemez. Benzer bir yakla\u015f\u0131m ile 3 uzvunun 2 uzvuna g\u00f6re ve 4 uzvunun 3 uzvuna g\u00f6re ba\u011f\u0131l hareketleri s\u0131ras\u0131 ile A ve B noktalar\u0131ndan ge\u00e7en, d\u00fczleme dik bir eksen etraf\u0131nda d\u00f6nme olacakt\u0131r. 4 uzvunun 1 uzvuna g\u00f6re hareketi ise iki uzuv birbirlerine kayar mafsal ile ba\u011fl\u0131 olduklar\u0131ndan kayar mafsal ekseni y\u00f6n\u00fcnde \u00f6teleme hareketidir.<\/p>\n<p>\u00dcst \u00fcste d\u00fczlemlerden olu\u015fan bu mekanizmaya bir i\u011fne bat\u0131ral\u0131m (\u015fekilde g\u00f6sterilen P noktas\u0131). Bu i\u011fne, mekanizmada 4 uzuv oldu\u011fundan, bu uzuvlara ba\u011fl\u0131 4 d\u00fczlemi de delecektir. \u00d6yle ise 1 uzvu \u00fczerinde P<sub>1<\/sub>, 2 uzvu \u00fczerinde P<sub>2<\/sub>\u00a0, 3 uzvu \u00fczerinde P<sub>3<\/sub>\u00a0ve 4 uzvu \u00fczerinde P<sub>4<\/sub>\u00a0noktalar\u0131 bulunacakt\u0131r. 1 uzvu \u00fczerinde al\u0131nan sabit bir referans eksenine g\u00f6re bu 4 noktan\u0131n konumu ayn\u0131d\u0131r ve ayn\u0131 konum vekt\u00f6r\u00fc ile g\u00f6sterilir. Mekanizman\u0131n bir miktar bu ilk konumdan yer de\u011fi\u015ftirdi\u011fini d\u00fc\u015f\u00fcnelim. P<sub>1<\/sub> noktas\u0131, sabit uzuv \u00fczerinde oldu\u011fundan, konum vekt\u00f6r\u00fc sabit olacak ve konumunu de\u011fi\u015ftirmeyecektir. 2 uzvu sabit uzva g\u00f6re A<sub>0<\/sub>\u00a0noktas\u0131 merkez olmak \u00fczere d\u00f6nd\u00fc\u011f\u00fcnden P<sub>2<\/sub>\u00a0noktas\u0131 A<sub>0<\/sub>\u00a0merkezli PA<sub>0<\/sub>\u00a0yar\u0131\u00e7apl\u0131 bir daire \u00fczerinde hareket edecektir. Benzer bir \u015fekilde P<sub>2<\/sub>\u00a0noktas\u0131n\u0131n 3 uzvu \u00fczerinde izd\u00fc\u015f\u00fcm\u00fcn\u00fc incelersek, bu sefer A merkezli AP yar\u0131\u00e7apl\u0131 bir daire \u00fczerinde olacakt\u0131r. P<sub>2<\/sub>\u00a0noktas\u0131n\u0131n 4 uzvu \u00fczerinde \u00e7izdi\u011fi y\u00f6r\u00fcnge basit bir daire olmayacakt\u0131r (genellikle krank-biyel mekanizmas\u0131 i\u00e7in bu d\u00f6rd\u00fcnc\u00fc mertebeden bir e\u011fridir). Benzer incelemeyi P<sub>3<\/sub>\u00a0ve P<sub>4<\/sub> noktalar\u0131 i\u00e7in de yapabiliriz.<\/p>\n<p>\u015eimdi B noktas\u0131n\u0131 g\u00f6z \u00f6n\u00fcne alal\u0131m. D\u00f6rt nokta (B<sub>1<\/sub>, B<sub>2<\/sub>, B<sub>3<\/sub>\u00a0ve B<sub>4<\/sub>), o an i\u00e7in \u00e7ak\u0131\u015fmaktad\u0131r. B noktas\u0131 3 ve 4 uzuvlar\u0131 aras\u0131nda bulunan d\u00f6ner mafsal\u0131n eksen do\u011frusu \u00fczerinde oldu\u011fundan B<sub>3<\/sub>\u00a0ve B<sub>4<\/sub>\u00a0noktalar\u0131 her konum i\u00e7in \u00e7ak\u0131\u015facakt\u0131r. Buna\u00a0<span style=\"color: #cc0000\"><b>daima \u00e7ak\u0131\u015fan noktalar<\/b>\u00a0<\/span>diyece\u011fiz. Buna kar\u015f\u0131n B<sub>2<\/sub>\u00a0ve B<sub>1<\/sub>\u00a0noktalar\u0131 sadece inceleme an\u0131nda di\u011fer iki nokta ile \u00e7ak\u0131\u015facak, mekanizman\u0131n ba\u015fka bir konumunda B<sub>3<\/sub>\u00a0ve B<sub>4<\/sub>\u00a0hala \u00e7ak\u0131\u015f\u0131k iken B<sub>2<\/sub>\u00a0ve B<sub>1<\/sub>\u00a0in konumlar\u0131 farkl\u0131 olacaklard\u0131r. Bu \u00f6zellikte olan noktalara\u00a0<span style=\"color: #cc0000\"><b>anl\u0131k \u00e7ak\u0131\u015fan noktalar<\/b><\/span>\u00a0diyece\u011fiz.<\/p>\n<p>Mekanizmalar\u0131 yukar\u0131da g\u00f6sterildi\u011fi gibi \u00e7izmek yayg\u0131n bir uygulama \u015fekli de\u011fildir. Mekanizma uzuvlar\u0131 ya ger\u00e7ek uygulamada ald\u0131klar\u0131 \u015feklin teknik resim kurallar\u0131na g\u00f6re \u00e7izilmesi ile (bu \u015fekilde \u00e7izmek mekanizman\u0131n kinematik analizi s\u0131ras\u0131nda olduk\u00e7a zordur) veya basit geometrik \u015fekiller olarak sadece mafsal noktalar\u0131n\u0131 ve ilgilendi\u011fimiz bir nokta veya \u00e7izgiyi i\u00e7erecek \u015fekilde \u00e7izilirler.<\/p>\n<p><span style=\"color: #cc0000\"><b><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19\" src=\"https:\/\/blog.metu.edu.tr\/eresmech\/files\/2021\/04\/important.gif\" alt=\"\" width=\"28\" height=\"27\" \/><\/b><\/span><b> <span style=\"color: #cc0000\">Analiz s\u0131ras\u0131nda her uzvun sonsuz boyutta olabilece\u011fi unutulmamal\u0131d\u0131r.<\/span><\/b><\/p>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div>\n\n\n<p>  <a href=\"https:\/\/blog.metu.edu.tr\/eresmech\/mekanizma-teknigi\/ch3\/3-2\/\" data-type=\"page\"><img loading=\"lazy\" decoding=\"async\" width=\"38\" height=\"38\" class=\"wp-image-16\" style=\"width: 38px\" src=\"https:\/\/blog.metu.edu.tr\/eresmech\/files\/2021\/04\/back_button.gif\" alt=\"\" \/><\/a><a href=\"https:\/\/blog.metu.edu.tr\/eresmech\/mekanizma-teknigi\/ch3\/\" data-type=\"page\" data-id=\"52\"><img loading=\"lazy\" decoding=\"async\" width=\"38\" height=\"38\" class=\"wp-image-17\" style=\"width: 38px\" src=\"https:\/\/blog.metu.edu.tr\/eresmech\/files\/2021\/04\/contents_button.gif\" alt=\"\" \/><\/a><a href=\"https:\/\/blog.metu.edu.tr\/eresmech\/mekanizma-teknigi\/\" data-type=\"page\" data-id=\"47\"><img loading=\"lazy\" decoding=\"async\" width=\"38\" height=\"38\" class=\"wp-image-18\" style=\"width: 38px\" src=\"https:\/\/blog.metu.edu.tr\/eresmech\/files\/2021\/04\/home_button.gif\" alt=\"\" \/><\/a><a href=\"https:\/\/blog.metu.edu.tr\/eresmech\/mekanizma-teknigi\/ch3\/3-4\/\" data-type=\"page\" data-id=\"92\"><img loading=\"lazy\" decoding=\"async\" width=\"38\" height=\"38\" class=\"wp-image-20\" style=\"width: 38px\" src=\"https:\/\/blog.metu.edu.tr\/eresmech\/files\/2021\/04\/next_button.gif\" alt=\"\" \/><\/a><img loading=\"lazy\" decoding=\"async\" width=\"119\" height=\"40\" class=\"wp-image-15\" style=\"width: 119px\" src=\"https:\/\/blog.metu.edu.tr\/eresmech\/files\/2021\/04\/ceres.gif\" alt=\"\" \/>       <\/p>\n","protected":false},"excerpt":{"rendered":"<p>3.3 \u00c7ak\u0131\u015fan Noktalar Mekanizmalarda bir \u00e7ok rijit cisimden (uzuvdan) olu\u015fan bir sistem vard\u0131r. Bu uzuvlar aras\u0131nda ba\u011f\u0131l hareket, uzuvlar\u0131 birbirlerine ba\u011flayan mafsallar\u0131n serbestlik derecesi ve tipi ile belirlidir. Yukar\u0131da rijit cisimler i\u00e7in elde edilen \u00fc\u00e7 sonuca g\u00f6re her bir uzuv &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"more-link\" href=\"https:\/\/blog.metu.edu.tr\/eresmech\/mekanizma-teknigi\/ch3\/3-3\/\"> <span class=\"screen-reader-text\">3-3<\/span> Devam\u0131n\u0131 Oku &raquo;<\/a><\/p>\n","protected":false},"author":7747,"featured_media":0,"parent":370,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"class_list":["post-822","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/blog.metu.edu.tr\/eresmech\/wp-json\/wp\/v2\/pages\/822","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.metu.edu.tr\/eresmech\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/blog.metu.edu.tr\/eresmech\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/blog.metu.edu.tr\/eresmech\/wp-json\/wp\/v2\/users\/7747"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.metu.edu.tr\/eresmech\/wp-json\/wp\/v2\/comments?post=822"}],"version-history":[{"count":0,"href":"https:\/\/blog.metu.edu.tr\/eresmech\/wp-json\/wp\/v2\/pages\/822\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/blog.metu.edu.tr\/eresmech\/wp-json\/wp\/v2\/pages\/370"}],"wp:attachment":[{"href":"https:\/\/blog.metu.edu.tr\/eresmech\/wp-json\/wp\/v2\/media?parent=822"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}