{"id":1357,"date":"2026-09-11T06:59:40","date_gmt":"2026-09-11T06:59:40","guid":{"rendered":"https:\/\/injection-molded-parts.com\/injection-molded-gear-tolerances\/"},"modified":"2026-09-14T07:53:21","modified_gmt":"2026-09-14T07:53:21","slug":"injection-molded-gear-tolerances","status":"publish","type":"post","link":"https:\/\/injection-molded-parts.com\/no\/injection-molded-gear-tolerances\/","title":{"rendered":"Injection Molded Gear Tolerances"},"content":{"rendered":"
\n

Start fra mekanismen<\/h2>\n

A useful gear tolerance plan focuses on the characteristics that control the mesh and mounting relationship.<\/p>\n

Bore-to-tooth runout, tooth-to-tooth variation, overall geometry and the center distance in the assembly all influence working performance. Molding adds material shrinkage and process variation that should be reflected in datum and inspection choices.<\/p>\n

Consider an assembly where the bore locates on a steel shaft and the mate is fixed in a molded housing. A tight outside-diameter tolerance on the gear does little if bore runout or housing center distance dominates the mesh. The drawing should therefore distinguish tooth geometry from mounting geometry and place the inspection datum on the feature that actually locates the gear in service.<\/p>\n<\/section>\n

\"Injection<\/figure>\n
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Inndata som skal fryses f\u00f8r tilbud<\/h2>\n

Define the gear standard\/convention, module or DP, pressure angle, bore datum, mating gear, center distance, backlash target and measurement condition.<\/p>\n

Legg disse inndataene p\u00e5 den kontrollerte tegningen, spesifikasjonen eller vedlegget til tilbudssp\u00f8rsm\u00e5let der det er mulig. \u00c5 holde dem unna uformelle meldingstr\u00e5der gj\u00f8r det enklere \u00e5 h\u00e5ndtere leverand\u00f8rsammenligninger og senere revisjoner.<\/p>\n<\/section>\n

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Hva kan ugyldiggj\u00f8re antagelsen<\/h2>\n

Overtightening every drawing dimension can increase tooling and inspection cost without controlling the actual mesh.<\/p>\n<\/section>\n

\"Injection<\/figure>\n
\n

Verifiseringsstrategi<\/h2>\n

Combine dimensional gear checks with an assembled roll or functional test when that better represents the mechanism.<\/p>\n

For Injection Molded Gear Tolerances, close the DFM loop by updating the controlled CAD\/drawing and sample plan. A recommendation that never reaches the released revision cannot be inspected consistently in production.<\/p>\n<\/section>\n

\"Injection<\/figure>\n
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Sjekkliste for innkj\u00f8p<\/h2>\n

Before requesting a price for injection molded gear tolerances, identify the current drawing revision, production quantity, material constraint and the feature that most strongly affects function. Ask the supplier to flag any deviation from those inputs in the quotation so technical alternatives stay visible.<\/p>\n<\/section>\n

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Praktisk designgjennomgang for denne avgj\u00f8relsen<\/h2>\n

Tolerance should be allocated from the assembly backward. Start with required working backlash or position, then include center-distance variation, tooth-to-bore runout, shaft\/bearing clearance, material movement and measurement uncertainty. Tightening every free-part dimension can increase cost without protecting the assembled condition.<\/p>\n

Registrer forutsetningene p\u00e5 tegningen eller i tilbudsforesp\u00f8rselen slik at leverand\u00f8ren kan bekrefte dem f\u00f8r tilbudet gis. N\u00e5r en verdi er ukjent, identifiser den som en \u00e5pen konstruksjonsvare i stedet for \u00e5 kopiere et generisk katalognummer som kanskje ikke samsvarer med monteringen.<\/p>\n<\/section>\n

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Verifiseringsark<\/h2>\n
    \n
  • Working rather than nominal clearance<\/li>\n
  • Bore-to-tooth or rack-to-mount datum relationship<\/li>\n
  • Mating-part tolerance<\/li>\n
  • Inspection temperature \/ conditioning<\/li>\n
  • Functional roll, mesh or position check<\/li>\n
  • Acceptance method agreed before sampling<\/li>\n<\/ul>\n

    Bruk den f\u00f8rste pr\u00f8ven til \u00e5 lukke disse punktene med b\u00e5de dimensjonsdokumentasjon og relevant funksjonskontroll. Eventuelle aksepterte avvik b\u00f8r fanges opp i den kontrollerte revisjonen f\u00f8r gjentatt produksjon.<\/p>\n<\/section>","protected":false},"excerpt":{"rendered":"

    Start from the mechanism A useful gear tolerance plan focuses on the characteristics that control the mesh and mounting relationship. Bore-to-tooth runout, tooth-to-tooth variation, overall geometry and the center distance in the assembly all influence…<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1357","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/injection-molded-parts.com\/no\/wp-json\/wp\/v2\/posts\/1357","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/injection-molded-parts.com\/no\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/injection-molded-parts.com\/no\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/injection-molded-parts.com\/no\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/injection-molded-parts.com\/no\/wp-json\/wp\/v2\/comments?post=1357"}],"version-history":[{"count":2,"href":"https:\/\/injection-molded-parts.com\/no\/wp-json\/wp\/v2\/posts\/1357\/revisions"}],"predecessor-version":[{"id":1602,"href":"https:\/\/injection-molded-parts.com\/no\/wp-json\/wp\/v2\/posts\/1357\/revisions\/1602"}],"wp:attachment":[{"href":"https:\/\/injection-molded-parts.com\/no\/wp-json\/wp\/v2\/media?parent=1357"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/injection-molded-parts.com\/no\/wp-json\/wp\/v2\/categories?post=1357"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/injection-molded-parts.com\/no\/wp-json\/wp\/v2\/tags?post=1357"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}