\nTL;DR:<\/strong><\/p>\n
\n
- Toolbox for 95 % cases: spur gears, helical gears, bevel gears, rack gears; configurable module and number of teeth.<\/li>\n
- Toolbox requires SOLIDWORKS<\/a> Professional or Premium.<\/li>\n
- The catch: A Toolbox gear is a library part, not a part that \u00abbelongs to you.\u00bb To machine or export it properly, you need to convert it.<\/li>\n<\/ul>\n<\/blockquote>\n
\nThe fastest is the library Toolbox<\/strong> : In the Tasks pane, under Design Library \u2192 Toolbox \u2192 Standards (ISO) \u2192 Power Transmission \u2192 Gears, drag \u00abStraight Gear\u00bb into the assembly and enter the module, number of teeth, and width. The model is ready in a minute. Manual modeling is only necessary for a specific tooth profile or a part to be machined.<\/p>\n
Method 1: The Toolbox Gear (5 minutes)<\/h2>\n
\n
- Open or create an assembly (Toolbox inserts into an assembly, not into a part).<\/li>\n
- Tasks pane (on the right) \u2192 tab Design Library<\/strong> \u2192 Toolbox<\/strong>. If Toolbox is grayed out, enable the add-in: Tools \u2192 Add-ins \u2192 SOLIDWORKS Toolbox Library.<\/li>\n
- ISO<\/strong> \u2192 Power Transmission<\/strong> \u2192 Gears<\/strong> \u2192 slide Spur gear<\/strong> in the graph area.<\/li>\n
- In the PropertyManager: Module<\/strong> (Ex. 2), Number of teeth<\/strong> (Ex. 24), Pressure angle<\/strong> (20\u00b0 by default), Face Width<\/strong>, hub type, nominal bore, keyway if required.<\/li>\n
- Confirm. Repeat for the mating wheel with the same module. Position both at the theoretical center distance: (module \u00d7 (Z1 + Z2)) \/ 2.<\/li>\n
- Constraint Gear<\/strong> (mechanical constraints) between the two to simulate rotation at the correct ratio.<\/li>\n<\/ol>\n
Method 2: By Hand (When the Number of Teeth Matters)<\/h2>\n
\n
- Sketch of a primitive circle (diameter = module \u00d7 number of teeth), the head circle, and the foot circle.<\/li>\n
- Draw a tooth: involute profile approximated by arcs (or import a calculated profile), symmetric about the tooth axis.<\/li>\n
- Extrude the tooth, then Circular Repetition<\/strong> of the function (number of occurrences = number of teeth).<\/li>\n
- Extrude the body, bore, and keyway.<\/li>\n<\/ol>\n
This method produces a native, editable, and exportable part, but the tooth profile remains an approximation: for precision machining, we start with the geometry provided by the tool manufacturer.<\/p>\n
The Pitfall to Watch Out For<\/h2>\n
A Toolbox gear is linked to the library. If you send the assembly to a partner who doesn't have Toolbox, the part won't resolve correctly; and if you modify the Toolbox part, you'll modify the library for all your projects. The solution: Pack and Go<\/strong> using the Toolbox parts included in the shipment, or \u00abSave As\u00bb a copy of the part to make it independent before editing.<\/p>\n
\n FAQ<\/p>\n
Frequently asked Questions<\/h2>\n
\nIs Toolbox available in SOLIDWORKS Standard?<\/summary>\n
No, Toolbox is included in the Professional and Premium editions. In the Standard edition, you model gears manually or import them from a supplier catalog (STEP).<\/p>\n<\/details>\n
\nHow do you get the right reduction ratio?<\/summary>\n
The ratio is the quotient of the numbers of teeth (Z2\/Z1). Two meshing gears must have the the same module<\/strong> ; then you choose the number of teeth for the desired gear ratio, and the center distance follows from that.<\/p>\n<\/details>\n<\/section>\n
Further Reading<\/strong> : Find All of our SOLIDWORKS tutorials<\/a>, and the SOLIDWORKS Training by Ohmytraining<\/a> which covers the design of complete mechanisms, gears, cams, and connections.<\/p>","protected":false},"excerpt":{"rendered":"
Toolbox for 95 % cases, manual modeling when the number of teeth matters, and the pitfalls of library parts.<\/p>","protected":false},"author":2,"featured_media":118281,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_breakdance_hide_in_design_set":false,"_breakdance_tags":"","footnotes":""},"categories":[498],"tags":[],"class_list":["post-118275","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tutoriels-astuces"],"acf":[],"_links":{"self":[{"href":"https:\/\/ohmycad.com\/en\/wp-json\/wp\/v2\/posts\/118275","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ohmycad.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ohmycad.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ohmycad.com\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ohmycad.com\/en\/wp-json\/wp\/v2\/comments?post=118275"}],"version-history":[{"count":1,"href":"https:\/\/ohmycad.com\/en\/wp-json\/wp\/v2\/posts\/118275\/revisions"}],"predecessor-version":[{"id":118310,"href":"https:\/\/ohmycad.com\/en\/wp-json\/wp\/v2\/posts\/118275\/revisions\/118310"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ohmycad.com\/en\/wp-json\/wp\/v2\/media\/118281"}],"wp:attachment":[{"href":"https:\/\/ohmycad.com\/en\/wp-json\/wp\/v2\/media?parent=118275"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ohmycad.com\/en\/wp-json\/wp\/v2\/categories?post=118275"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ohmycad.com\/en\/wp-json\/wp\/v2\/tags?post=118275"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}