{"id":590,"date":"2023-01-10T00:47:38","date_gmt":"2023-01-10T00:47:38","guid":{"rendered":"https:\/\/metallum.se\/?page_id=590"},"modified":"2023-01-10T08:29:47","modified_gmt":"2023-01-10T08:29:47","slug":"frasning","status":"publish","type":"page","link":"https:\/\/metallum.se\/?page_id=590","title":{"rendered":"Fr\u00e4sning"},"content":{"rendered":"\n<div class=\"wp-block-media-text is-stacked-on-mobile is-vertically-aligned-top\"><figure class=\"wp-block-media-text__media\"><img data-recalc-dims=\"1\" fetchpriority=\"high\" decoding=\"async\" width=\"768\" height=\"1024\" src=\"https:\/\/i0.wp.com\/metallum.se\/wp-content\/uploads\/2023\/01\/IMG_4181.jpg?resize=768%2C1024&#038;ssl=1\" alt=\"\" class=\"wp-image-489 size-full\" srcset=\"https:\/\/i0.wp.com\/metallum.se\/wp-content\/uploads\/2023\/01\/IMG_4181-scaled.jpg?resize=768%2C1024&amp;ssl=1 768w, https:\/\/i0.wp.com\/metallum.se\/wp-content\/uploads\/2023\/01\/IMG_4181-scaled.jpg?resize=225%2C300&amp;ssl=1 225w, https:\/\/i0.wp.com\/metallum.se\/wp-content\/uploads\/2023\/01\/IMG_4181-scaled.jpg?resize=1152%2C1536&amp;ssl=1 1152w, https:\/\/i0.wp.com\/metallum.se\/wp-content\/uploads\/2023\/01\/IMG_4181-scaled.jpg?resize=1536%2C2048&amp;ssl=1 1536w, https:\/\/i0.wp.com\/metallum.se\/wp-content\/uploads\/2023\/01\/IMG_4181-scaled.jpg?w=1920&amp;ssl=1 1920w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p>I fr\u00e4sen sitter normalt arbetsstycket fast i ett skruvstycke eller p\u00e5 fr\u00e4sens bord, medan det sk\u00e4rande verktyget roterar. Det \u00e4r f\u00f6rvisso vanligt att arbetsstycket f\u00e4sts upp p\u00e5 ett rundmatningsbord, och d\u00e5 kan arbetsstycket vridas mellan fr\u00e4soperationerna eller till och med under p\u00e5g\u00e5ende fr\u00e4soperation om man beh\u00f6ver en diameter som \u00e4r st\u00f6rre \u00e4n de 400 mm svarven klarar.<br>I fr\u00e4sen fr\u00e4ser man oftast, men det \u00e4r n\u00e4stan lika vanligt att man borrar eller g\u00e4ngar eftersom maskinens digitala m\u00e4tskalor ger en utm\u00e4rkt koordinatangivelse s\u00e5 h\u00e5len hamnar p\u00e5 r\u00e4tt st\u00e4lle. Innan man b\u00f6rjar fr\u00e4sa m\u00e5ste man veta var mitten av arbetsstycket \u00e4r, oavsett om det \u00e4r runt eller fyrkantigt, s\u00e5 det blir lite pyssel innan man b\u00f6rjar fr\u00e4sa.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text has-media-on-the-right is-stacked-on-mobile is-vertically-aligned-top\"><div class=\"wp-block-media-text__content\">\n<p>Det \u00e4r mycket vanligt att man riggar om fr\u00e4sen och byter skruvstycke till rundmatningsbord eller delningsapparat, ibland flera g\u00e5nger om dagen. Sj\u00e4lva fr\u00e4soperationen utf\u00f6rs med ett sk\u00e4rande verktyg som pinnfr\u00e4s, fr\u00e4skrabba eller arborrhuvud vilket kanske \u00e4r konstiga namn f\u00f6r den som inte arbetar i en mekanisk verkstad, men alla verktyg l\u00f6ser olika uppgifter. P\u00e5 bilden ovan syns en 20 mm pinnfr\u00e4s medan p\u00e5 bilden till h\u00f6ger en borrchuck \u00e4r monterad d\u00e5 den rostfria ringen slutligen ska f\u00e5 styrstift inborrade p\u00e5 den st\u00f6rsta ytterdiametern. F\u00f6rst hittar man positionen p\u00e5 hela arbetsstycket, sen borrar man ett litet centrumh\u00e5l med en dubbh\u00e5lsborr, d\u00e4refter borrar man med en snabbst\u00e5lsborr som \u00e4r n\u00e5gon millimeter mindre \u00e4n det f\u00e4rdiga h\u00e5let, och efter det rymmer man upp med en snabbst\u00e5lsborr som \u00e4r ca 0,1 mm mindre \u00e4n f\u00e4rdigt h\u00e5l f\u00f6r att slutligen \u201dbrotscha\u201d eller \u201driva\u201d in h\u00e5let till f\u00e4rdigt m\u00e5tt vilket t ex kan vara 5,99 mm.<\/p>\n<\/div><figure class=\"wp-block-media-text__media\"><img data-recalc-dims=\"1\" decoding=\"async\" width=\"768\" height=\"1024\" src=\"https:\/\/i0.wp.com\/metallum.se\/wp-content\/uploads\/2023\/01\/IMG_3711-1.jpg?resize=768%2C1024&#038;ssl=1\" alt=\"\" class=\"wp-image-591 size-full\" srcset=\"https:\/\/i0.wp.com\/metallum.se\/wp-content\/uploads\/2023\/01\/IMG_3711-1-scaled.jpg?resize=768%2C1024&amp;ssl=1 768w, https:\/\/i0.wp.com\/metallum.se\/wp-content\/uploads\/2023\/01\/IMG_3711-1-scaled.jpg?resize=225%2C300&amp;ssl=1 225w, https:\/\/i0.wp.com\/metallum.se\/wp-content\/uploads\/2023\/01\/IMG_3711-1-scaled.jpg?resize=1152%2C1536&amp;ssl=1 1152w, https:\/\/i0.wp.com\/metallum.se\/wp-content\/uploads\/2023\/01\/IMG_3711-1-scaled.jpg?resize=1536%2C2048&amp;ssl=1 1536w, https:\/\/i0.wp.com\/metallum.se\/wp-content\/uploads\/2023\/01\/IMG_3711-1-scaled.jpg?w=1920&amp;ssl=1 1920w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><\/figure><\/div>\n","protected":false},"excerpt":{"rendered":"<p>I fr\u00e4sen sitter normalt arbetsstycket fast i ett skruvstycke eller p\u00e5 fr\u00e4sens bord, medan det sk\u00e4rande verktyget roterar. Det \u00e4r f\u00f6rvisso vanligt att arbetsstycket f\u00e4sts upp p\u00e5 ett rundmatningsbord, och d\u00e5 kan arbetsstycket vridas mellan fr\u00e4soperationerna eller till och med under p\u00e5g\u00e5ende fr\u00e4soperation om man beh\u00f6ver en diameter som \u00e4r st\u00f6rre \u00e4n de 400 mm [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":489,"parent":0,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-590","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Fr\u00e4sning - Metallum - Prototyp &amp; Teknik<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/metallum.se\/?page_id=590\" \/>\n<meta property=\"og:locale\" content=\"sv_SE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Fr\u00e4sning - Metallum - Prototyp &amp; Teknik\" \/>\n<meta property=\"og:description\" content=\"I fr\u00e4sen sitter normalt arbetsstycket fast i ett skruvstycke eller p\u00e5 fr\u00e4sens bord, medan det sk\u00e4rande verktyget roterar. 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