{"id":18434,"date":"2023-02-12T17:10:57","date_gmt":"2023-02-12T16:10:57","guid":{"rendered":"https:\/\/www.luque-machines.com\/okategoriserad\/servomotor-stegmotor-vad-ar-skillnaden-2\/"},"modified":"2026-09-03T08:06:13","modified_gmt":"2026-09-03T06:06:13","slug":"servomotor-stegmotor-vad-ar-skillnaden-2","status":"publish","type":"post","link":"https:\/\/www.luque-machines.com\/sv\/okategoriserad-2\/servomotor-stegmotor-vad-ar-skillnaden-2\/","title":{"rendered":"Servomotor\/stegmotor \u2013 vad \u00e4r skillnaden?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">B\u00e5de <mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">servomotorn<\/mark> och <mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">stegmotorn<\/mark> \u00e4r elektriska likstr\u00f6msmotorer. Deras h\u00f6ga vridmoment vid blockering (eller start) g\u00f6r dem till de mest anv\u00e4nda motorerna f\u00f6r robotar och specialmaskiner. Dessa motorer anv\u00e4nds ocks\u00e5 f\u00f6r att styra axlarna p\u00e5 CNC-fr\u00e4smaskiner.  <\/p>\n\n<p class=\"has-large-font-size wp-block-paragraph\"><strong>Stegmotorn<\/strong><\/p>\n\n<p class=\"wp-block-paragraph\">Stegmotorn l\u00e4mpar sig b\u00e4ttre f\u00f6r mindre bearbetningar. Dess enkla konstruktion g\u00f6r den l\u00e4tt att tillverka och drifts\u00e4ker.<br\/>Om de krafter som rotorn uts\u00e4tts f\u00f6r d\u00e4remot \u00e4r st\u00f6rre \u00e4n motorns maximalt till\u00e5tna vridmoment (N.m-v\u00e4rdet som anges av tillverkaren) uppst\u00e5r ett stegf\u00f6rlustfenomen: motorn tappar steg och man h\u00f6r sm\u00e5 \u201dcrac\u201d-ljud inuti motorn.<br\/>Om ni fr\u00e4ser ett arbetsstycke i ett h\u00e5rt material och matningshastigheterna p\u00e5 er fr\u00e4smaskin \u00e4r fel inst\u00e4llda kommer stegmotorerna som driver era axlar att uts\u00e4ttas f\u00f6r stegf\u00f6rluster. Samma fenomen uppst\u00e5r om hastigheterna och accelerationerna i axelr\u00f6relserna \u00e4r f\u00f6r h\u00f6ga.  <\/p>\n\n<p class=\"wp-block-paragraph\">Problemet \u00e4r att under en l\u00e5ng bearbetningsprocess leder summan av flera efterf\u00f6ljande stegf\u00f6rluster till stora f\u00f6rskjutningar p\u00e5 fr\u00e4smaskinens axlar. Fr\u00e4sen styrs d\u00e5 inte l\u00e4ngre till den ursprungligen avsedda positionen och er slutprodukt blir inte l\u00e4ngre anv\u00e4ndbar.<br\/>F\u00f6r fr\u00e4sning av sm\u00e5 detaljer och korta processer i mjuka material r\u00e4cker stegmotorer. Men f\u00f6r tillverkning av stora delar \u00e4r de inte l\u00e4ngre l\u00e4mpliga.  <\/p>\n\n<p class=\"has-text-align-left has-large-font-size wp-block-paragraph\"><strong>Servomotor<\/strong><\/p>\n\n<p class=\"wp-block-paragraph\">Servomotorn \u00e4r uppbyggd som en stegmotor, med skillnaden att den dessutom har en encoder. Den g\u00f6r att motorn kontinuerligt kan m\u00e4ta rotorns rotationshastighet. P\u00e5 s\u00e5 s\u00e4tt kan styrningen avg\u00f6ra om rotationskommandot har utf\u00f6rts fullt ut. Vid en stegf\u00f6rlust vet man om motorn har roterat mindre \u00e4n planerat och justerar r\u00f6relsen omedelbart. Man undviker allts\u00e5 avvikelser under bearbetningsprocessen.<br\/>Servomotorn \u00e4r d\u00e4rmed inte k\u00e4nslig f\u00f6r stegf\u00f6rluster och l\u00e4mpar sig d\u00e4rf\u00f6r b\u00e4ttre f\u00f6r fr\u00e4sning i stora dimensioner. En fr\u00e4smaskin utrustad med servomotorer t\u00e5l h\u00f6ga accelerationer och h\u00f6ga f\u00f6rflyttningshastigheter p\u00e5 sina axlar och beh\u00e5ller samtidigt sin positioneringsnoggrannhet. De rekommenderas d\u00e4rf\u00f6r f\u00f6r tillverkning av stora delar som kr\u00e4ver h\u00f6g precision.      <\/p>\n","protected":false},"excerpt":{"rendered":"<p>B\u00e5de servomotorn och stegmotorn \u00e4r elektriska likstr\u00f6msmotorer. Deras h\u00f6ga vridmoment vid blockering (eller start) g\u00f6r dem till de mest anv\u00e4nda motorerna f\u00f6r robotar och specialmaskiner. Dessa motorer anv\u00e4nds ocks\u00e5 f\u00f6r att styra axlarna p\u00e5 CNC-fr\u00e4smaskiner. Stegmotorn Stegmotorn l\u00e4mpar sig b\u00e4ttre f\u00f6r mindre bearbetningar. Dess enkla konstruktion g\u00f6r den l\u00e4tt att tillverka och drifts\u00e4ker.Om de krafter [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[588383],"tags":[],"class_list":["post-18434","post","type-post","status-publish","format-standard","hentry","category-okategoriserad-2"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Servomotor\/stegmotor \u2013 vad \u00e4r skillnaden?<\/title>\n<meta name=\"description\" content=\"Vad skiljer en servomotor fr\u00e5n en stegmotor? 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