{"id":902,"date":"2022-11-08T12:02:18","date_gmt":"2022-11-08T04:02:18","guid":{"rendered":"https:\/\/milling-machining.com\/?p=902"},"modified":"2022-11-17T14:27:24","modified_gmt":"2022-11-17T06:27:24","slug":"dfm-for-cnc-machining-checklist","status":"publish","type":"post","link":"https:\/\/milling-machining.com\/?p=902","title":{"rendered":"DFM for CNC Machining Checklist"},"content":{"rendered":"

Design for least effort<\/span>
\n\"\"\u00a0\u00a0\u00a0 <\/strong><\/p>\n

    \n
  1. Tolerance <\/span><\/li>\n<\/ol>\n

    Design to ISO 2768 medium standard<\/span><\/p>\n

      \n
    1. Geometry<\/span><\/li>\n<\/ol>\n

      Remove as little material as possible <\/span><\/p>\n

      Use 2 setups if possible<\/span><\/p>\n

      Have two side surfaces parallel to each other <\/span><\/p>\n

        \n
      1. Material Suggestion<\/span><\/li>\n<\/ol>\n

        The following are easiest material for this category.<\/span><\/p>\n

        Plastic, use Delrin<\/span><\/p>\n

        Soft Metal, use 6061 Aluminum<\/span><\/p>\n

        Hard Metal, use 1018 Steel <\/span><\/p>\n

          \n
        1. Surface <\/span><\/li>\n<\/ol>\n

          Specify the surface roughness of 63 Ra.<\/span><\/p>\n

          Only define the intrinsic fillets<\/span><\/p>\n

          Specify \u201cde-burr\u201d all edges for external edges in the drawing<\/span><\/p>\n


          \n\"\"<\/span><\/p>\n

           <\/p>\n

          More Effort Design<\/span> <\/strong><\/p>\n

            \n
          1. Tolerance<\/span><\/li>\n<\/ol>\n

            Limit the tight tolerance only to the critical dimensions<\/span><\/p>\n

              \n
            1. Geometry <\/span><\/li>\n<\/ol>\n

              Simplify geometry to avoid 5-axis machining if possible<\/span><\/p>\n

              Limit the number of faces in order to limit set up<\/span><\/p>\n

                \n
              1. Select proper material to meet the design requirements<\/span><\/li>\n<\/ol>\n

                Maximum Effort Design<\/strong><\/span><\/p>\n

                \"\"<\/p>\n

                 <\/p>\n

                  \n
                1. Define tight tolerance only for critical dimensions<\/span><\/li>\n
                2. Select standard tool sizes<\/span><\/li>\n
                3. Minimize the cut depth <\/span><\/li>\n
                4. For large parts, break into assemblies to reduce machining effort<\/span><\/li>\n
                5. Design parts with existing stock material <\/span><\/li>\n
                6. For small parts, minimize the cut depth if possible <\/span><\/li>\n
                7. Edges significantly increase the deburring efforts<\/span><\/li>\n
                8. Designs that require 5-axis CNC machining will significantly increase the machining time<\/span><\/span><\/span> <\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"

                  Design for least effort \u00a0\u00a0\u00a0 Tolerance Design to ISO 276 […]<\/p>\n","protected":false},"author":1,"featured_media":904,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[8],"class_list":["post-902","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-swiss-cnc-machining","tag-cnc-milling-machining"],"_links":{"self":[{"href":"https:\/\/milling-machining.com\/index.php?rest_route=\/wp\/v2\/posts\/902","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/milling-machining.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/milling-machining.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/milling-machining.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/milling-machining.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=902"}],"version-history":[{"count":5,"href":"https:\/\/milling-machining.com\/index.php?rest_route=\/wp\/v2\/posts\/902\/revisions"}],"predecessor-version":[{"id":1107,"href":"https:\/\/milling-machining.com\/index.php?rest_route=\/wp\/v2\/posts\/902\/revisions\/1107"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/milling-machining.com\/index.php?rest_route=\/wp\/v2\/media\/904"}],"wp:attachment":[{"href":"https:\/\/milling-machining.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=902"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/milling-machining.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=902"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/milling-machining.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=902"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}