{"id":1917,"date":"2026-04-09T05:36:33","date_gmt":"2026-04-09T05:36:33","guid":{"rendered":"https:\/\/wormwheelgear.top\/?p=1917"},"modified":"2026-04-09T05:37:34","modified_gmt":"2026-04-09T05:37:34","slug":"worm-gear-standards-din-iso-and-agma-what-each-measures-and-how-they-compare","status":"publish","type":"post","link":"https:\/\/wormwheelgear.top\/et\/worm-gear-standards-din-iso-and-agma-what-each-measures-and-how-they-compare\/","title":{"rendered":"Worm Gear Standards — DIN, ISO, and AGMA: What Each Measures and How They Compare"},"content":{"rendered":"
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Teadmiste sari \u00b7 B8 \u00b7 Standardid ja m\u00f5\u00f5tmine<\/p>\n

Ussivarustus Standardid<\/span> \u2014 DIN, ISO ja AGMA: mida iga\u00fcks neist m\u00f5\u00f5dab ja kuidas neid v\u00f5rreldakse<\/h1>\n

USA kliendi joonisel on t\u00e4psustatud standardit AGMA 10. Teie t\u00f6\u00f6koda t\u00f6\u00f6tab DIN standardi j\u00e4rgi. Kumb on rangem? Milliseid parameetreid iga standard tegelikult m\u00f5\u00f5dab? See juhend lahendab segaduse otsese v\u00f5rdlustabeli ja t\u00e4ppisklassi teisendusviidete abil.<\/p>\n

DIN 3975\/3976<\/span>ISO 1122-1<\/span>AGMA 6022-C96<\/span>DIN-i ja AGMA-i teisendamine<\/span><\/div>\n<\/div>\n
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\u2699 Korea Ever-Power Worm Gear Co., Ltd Ansan-si, Gyeonggi-do, Koreasales@wormwheelgear.top<\/div>\n<\/div>\n
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Joonis, mis p\u00f5hjustas kolmen\u00e4dalase viivituse<\/h2>\n

Korea masinaehitaja sai USA originaalvaruosade tootjalt (OEM) ostutellimuse, mis sisaldas ussi\u00fclekande joonist, millel oli t\u00e4psustatud AGMA kvaliteediklass 10. Nende tootmismeeskond k\u00e4sitles seda samav\u00e4\u00e4rsena standardiga DIN 8 \u2013 tavaline, kuid ebat\u00e4pne teisendus \u2013 ja valmistas vastavalt. USA originaalvaruosade tootja sissetuleva kontrolli k\u00e4igus osad tagasi l\u00fckati: nende koordinaatm\u00f5\u00f5temasin leidis juhth\u00e4lbe ja profiilivead DIN 8 tolerantsi piires, kuid v\u00e4ljaspool AGMA 10 tolerantsi konkreetse hammasratta suuruse puhul. Kolmen\u00e4dalane viivitus probleemi lahendamisel \u2013 korduvkontroll, uus dokumentatsioon, osaline \u00fcmbert\u00f6\u00f6tlemine \u2013 maksis rohkem kui hammasrattakomplekt ise.<\/p>\n

Viga ei olnud tootmises. See oli teisenduses. DIN ja AGMA t\u00e4psusklassid ei ole lihtsad 1:1 teisendused. Need m\u00f5\u00f5davad kattuvaid, kuid mitte identseid hammasrataste parameetreid ning nende tolerantsiv\u00e4\u00e4rtused skaleeruvad erinevalt s\u00f5ltuvalt moodulist ja sammu l\u00e4bim\u00f5\u00f5dust. Iga insenerimeeskonna jaoks, kes tegeleb rahvusvaheliste klientide v\u00f5i tarnijatega, on oluline m\u00f5ista, mida iga standard tegelikult m\u00e4\u00e4rab \u2013 ja kus on nende teisendus usaldusv\u00e4\u00e4rne ja kus see ei toimi.<\/p>\n

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DIN 3975 ja DIN 3976 \u2013 Euroopa etalon<\/h2>\n

DIN 3975 m\u00e4\u00e4ratleb silindriliste ussi\u00fclekannete geomeetrilised parameetrid ja terminoloogia \u2013 t\u00f5usunurk, aksiaalne samm, normaalsamm, hamba paksus tihvtide kohal, spiraali suund ja ussi geomeetria parameetrite vahelised seosed. DIN 3976 m\u00e4\u00e4rab tolerantsid. Standardi DIN 3976 t\u00e4psusklassid ulatuvad klassist 3 (k\u00f5rgeim t\u00e4psus, harva t\u00f6\u00f6stuslikult toodetud) kuni klassi 12 (tolerantne t\u00f6\u00f6stuslik tootmine). Korea Ever-Poweri standardvarustus h\u00f5lmab klasse 6 kuni 12, positsioneerimisrakenduste jaoks on soovi korral saadaval ka klass 5.<\/p>\n

Iga t\u00e4psusklass m\u00e4\u00e4ratleb lubatud tolerantsid viie peamise parameetri jaoks. Need viis parameetrit kajastavad ussi keerme t\u00e4ielikku geomeetrilist kvaliteeti \u2013 DIN 3976 kohaselt pole ussi\u00fclekande kvaliteedi t\u00e4ielikuks m\u00e4\u00e4ratlemiseks vaja t\u00e4iendavaid parameetreid.<\/p>\n

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Hamba profiili h\u00e4lve Ff<\/div>\n

Ussiketta keermeprofiili k\u00f5rvalekalle teoreetilisest evolventprofiilist normaall\u00f5ikes. Suur Ff koondab koormuse kohalikele kokkupuutepunktidele, selle asemel et jaotada see \u00fcle kogu haardumiskaare. Ussiketta hambumism\u00fcra peamine allikas.<\/p>\n<\/div>\n

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Plii h\u00e4lve Fb<\/div>\n

Tegeliku keerme t\u00f5usu h\u00e4lve teoreetilisest t\u00f5usust piki sammusilindrit. Ebaj\u00e4rjekindel t\u00f5us p\u00f5hjustab ussi p\u00f6\u00f6rlemisel perioodilisi koormuse muutusi \u2013 hambasageduslike vibratsioonik\u00fclgribade allikas.<\/p>\n<\/div>\n

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\u00dchekordne sammu h\u00e4lve fp<\/div>\n

\u00dcksiku hambavahe laiuse k\u00f5rvalekalle teoreetilisest v\u00e4\u00e4rtusest. Iga sammuviga tekitab l\u00fchikese nurkkiirenduse\/-aeglustuse impulsi \u2013 need summeeruvad liit\u00fclekandeveaks.<\/p>\n<\/div>\n

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Profiili koguh\u00e4lve Fa<\/div>\n

Profiilivea tipust orgu ulatuv amplituud, mis h\u00f5lmab k\u00f5iki harmoonilisi. Kasutatakse vibratsiooni ja akustilise m\u00fcra arvutamisel. Vaikse ussi\u00fclekande k\u00f5ige olulisem parameeter.<\/p>\n<\/div>\n

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Hamba paksuse h\u00e4lve As<\/div>\n

Hamba paksuse k\u00f5rvalekalle nimiv\u00e4\u00e4rtusest, m\u00f5\u00f5detuna hammasratta tihvtide kohalt. Kontrollib otseselt l\u00f5tku montaa\u017ei ajal \u2013 liiga v\u00e4ike hammas suurendab kliirensit; liiga suur hammas suurendab hambaotsa kokkup\u00f5rget.<\/p>\n<\/div>\n<\/div>\n

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DIN-t\u00e4psusklassid \u2014 rakendused, tootmismeetodid ja teisendused<\/h2>\n
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DIN-klass<\/th>\nAGMA ligikaudne<\/th>\nTootmine<\/th>\nProfiili h\u00e4lve Ff (M5)<\/th>\nLead Dev. Facebook<\/th>\nT\u00fc\u00fcpiline rakendus<\/th>\nKorea Ever-Power Supply<\/th>\n<\/tr>\n<\/thead>\n
DIN 5<\/td>\nAGMA 12+<\/td>\nLihvitud + kattega<\/td>\n4 \u00b5m<\/td>\n6 \u00b5m<\/td>\nKirurgilised robotid, metroloogia, \u00fclit\u00e4psed positsioneerid<\/td>\nAinult soovi korral<\/td>\n<\/tr>\n
DIN 6<\/td>\nAGMA 11<\/td>\nKeerme maandus<\/td>\n6 \u00b5m<\/td>\n9 \u00b5m<\/td>\nRobot\u00fchendused, CNC-indekseerijad, suure t\u00e4psusega automatiseerimine<\/td>\nSaadaval, 4-6 n\u00e4dalat<\/td>\n<\/tr>\n
DIN 7<\/td>\nAGMA 10<\/td>\nKeerme maandus<\/td>\n9 \u00b5m<\/td>\n14 \u00b5m<\/td>\nPakendiindekseerijad, p\u00e4ikeseenergia j\u00e4lgimisseadmed, kobotite \u00fchendused<\/td>\nStandardne t\u00e4psus<\/td>\n<\/tr>\n
DIN 8<\/td>\nAGMA 9<\/td>\nHobbed\/treitud viimistlus<\/td>\n14 \u00b5m<\/td>\n20 \u00b5m<\/td>\nT\u00f6\u00f6stuslikud konveierid, t\u00f6\u00f6pingid, \u00fcldautomaatika<\/td>\nStandardvarustus<\/td>\n<\/tr>\n
DIN 9<\/td>\nAGMA 8<\/td>\nHobbed<\/td>\n20 \u00b5m<\/td>\n28 \u00b5m<\/td>\n\u00dcldmasinad, p\u00f5llumajandus, materjalik\u00e4itlus<\/td>\nStandardvarustus<\/td>\n<\/tr>\n
DIN 10<\/td>\nAGMA 7<\/td>\nHobbed<\/td>\n28 \u00b5m<\/td>\n40 \u00b5m<\/td>\nMittekriitilised ajamid, madala kiirusega seadmed<\/td>\nStandardvarustus<\/td>\n<\/tr>\n
DIN 12<\/td>\nAGMA 6<\/td>\nNagu l\u00f5igatud<\/td>\n56 \u00b5m<\/td>\n80 \u00b5m<\/td>\nKarmid rakendused, aeglane aeg-ajalt kasutatav ajam<\/td>\nStandardvarustus<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Profiili ja juhth\u00e4lbe v\u00e4\u00e4rtused on n\u00e4idatud mooduli 5 ussi jaoks keskmise sammu l\u00e4bim\u00f5\u00f5du korral. V\u00e4\u00e4rtused on skaalal vastavalt moodulile ja l\u00e4bim\u00f5\u00f5dule vastavalt DIN 3976 tolerantsiatabelitele.<\/p>\n

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AGMA 6022-C96 \u2014 Ameerika viide<\/h2>\n

AGMA 6022-C96 (silindriliste uss\u00fclekannete projekteerimisjuhend) on Ameerika Gear Manufacturers Associationi peamine standard uss\u00fclekannete projekteerimise ja spetsifikatsioonide kohta. Kvaliteediklassid ulatuvad AGMA 6-st (madalaim) kuni AGMA 14-ni (k\u00f5rgeim t\u00e4psus) \u2013 pange t\u00e4hele DIN-standardi suhtes \u00fcmberp\u00f6\u00f6ratud numeratsiooni, kus v\u00e4iksemad numbrid n\u00e4itavad suuremat t\u00e4psust. AGMA 14 = k\u00f5rgeim t\u00e4psus, AGMA 6 = toored kommerts\u00fclekanne.<\/p>\n

Peamine metodoloogiline erinevus: AGMA 6022 m\u00e4\u00e4rab kvaliteediklassid peamiselt l\u00e4bi komposiit\u00fclekande viga<\/em> katse \u2013 hammasratta valtsimism\u00f5\u00f5turiga m\u00f5\u00f5detud akumuleerunud sammu k\u00f5ikumine mitme hamba ulatuses. DIN 3976 m\u00e4\u00e4rab kindlaks \u00fcksikute parameetrite tolerantsid (Ff, Fb, fp, As), mida m\u00f5\u00f5detakse eraldi CMM-iga. Hammasratas v\u00f5ib vastata \u00fchele standardile, kuid n\u00e4idata veidi suuremat k\u00f5rvalekallet parameetris, mida teine \u200b\u200bstandard kaalub rohkem \u2013 eriti mittestandardsete moodulisuuruste korral, kus tolerantsi skaleerimise valemid erinevad.<\/p>\n

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Kriitiline praktiline punkt:<\/strong> AGMA numeratsioon on DIN-ile vastupidine. AGMA 8 on madalam<\/em> t\u00e4psus kui AGMA 12; DIN 8 on k\u00f5rgem<\/em> T\u00e4psus on suurem kui DIN 12. Joonist lugedes p\u00f6\u00f6rake enne klassinumbri t\u00f5lgendamist alati t\u00e4helepanu sellele, millisele standardile viidatakse. AGMA 8 (t\u00f6\u00f6stuslik standard) ja DIN 8 (t\u00f6\u00f6stuslik standard) segi ajamine on rahvusvahelises hammasrataste tarnimises k\u00f5ige levinum t\u00e4ppisklassi valesti t\u00f5lgendamine.<\/p>\n<\/div>\n

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CMM-i m\u00f5\u00f5tmismeetodid ussi\u00fclekande parameetrite jaoks<\/h2>\n
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Kaasaegne koordinaatm\u00f5\u00f5temasin (CMM) m\u00f5\u00f5tmine p\u00f6\u00f6rleva m\u00f5\u00f5tepeaga j\u00e4lgib ussi keerme k\u00fclge kindlaksm\u00e4\u00e4ratud m\u00f5\u00f5tetasandites, registreerides igas m\u00f5\u00f5detud punktis k\u00f5rvalekalde teoreetilisest evolventist. M\u00f5\u00f5tmine tehakse kolmes aksiaalses asendis (keerme \u00fchtluse kontrollimiseks) ja kahes profiili k\u00f5rguse asendis (profiili kuju kontrollimiseks), kokku kuus m\u00f5\u00f5tel\u00f5iku keerme alguse kohta.<\/p>\n

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Profiili m\u00f5\u00f5tmine<\/div>\n
CMM-i pliiats j\u00e4lgib keerme k\u00fclge normaall\u00f5ikes. K\u00f5rvalekalle teoreetilisest evolventist igas punktis on profiiliviga Ff.<\/div>\n<\/div>\n
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Plii m\u00f5\u00f5tmine<\/div>\n
CMM salvestab keerme asendit mitme nurgasammuga m\u00f6\u00f6da kogu keerme pikkust. Keerme t\u00f5usu h\u00e4lve on maksimaalne miinus minimaalne h\u00e4lve konstantsest t\u00f5usust.<\/div>\n<\/div>\n
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Hamba paksus tihvtide kohal<\/div>\n
Kalibreeritud tihvt asetatakse keermevahesse; tihvti kohal m\u00f5\u00f5tmine annab hamba paksuse geomeetrilise arvutuse abil.<\/div>\n<\/div>\n
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Aukude m\u00f5\u00f5tmine<\/div>\n
Ava m\u00f5\u00f5detuna 3 aksiaalses asendis x 2 risti asetsevat l\u00e4bim\u00f5\u00f5tu = 6 m\u00f5\u00f5tmist, mis kinnitavad H7 vastavust.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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Kontroll ja kvaliteedikontroll Korea Ever-Poweris<\/h2>\n\n\n\n\n
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Uss\u00fclekande joonise lugemine \u2014 n\u00f5utavad parameetrid<\/h2>\n

T\u00e4ielikul ussi\u00fclekande joonisel on t\u00e4psustatud k\u00f5ik parameetrid, mis on vajalikud \u00fclekande tootmiseks ja kontrollimiseks. Puuduvad parameetrid on joonise puudused \u2013 need tuleks lisada enne tootmise alustamist. J\u00e4rgmised parameetrid peavad olema igal t\u00e4ppisvarustuseks m\u00f5eldud ussi\u00fclekande joonisel.<\/p>\n

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Joonise parameeter<\/th>\nS\u00fcmbol<\/th>\nMis selle puudumine p\u00f5hjustab<\/th>\n<\/tr>\n<\/thead>\n
Aksiaalne moodul<\/td>\nmx<\/td>\nVale moodul = vale hamba suurus, vale keskpunktide vahe, sobimatu rattaga<\/td>\n<\/tr>\n
K\u00e4ivituste arv<\/td>\nz1<\/td>\nVale k\u00e4ivitusloendur muudab suhet, efektiivsust ja iselukustuvat k\u00e4itumist<\/td>\n<\/tr>\n
Ratta hammaste arv<\/td>\nz2<\/td>\nVale loendur muudab suhet ja keskpunkti kaugust<\/td>\n<\/tr>\n
L\u00e4bim\u00f5\u00f5du jagatis<\/td>\nq<\/td>\nM\u00e4\u00e4rab sammu l\u00e4bim\u00f5\u00f5du d1 = mxq; m\u00f5jutab juhtnurka<\/td>\n<\/tr>\n
Spiraali suund<\/td>\nR v\u00f5i L<\/td>\nVale k\u00e4si = 90-kraadine v\u00f5lli ristumisviga v\u00f5i vastupidine p\u00f6\u00f6rlemine<\/td>\n<\/tr>\n
Normaalne r\u00f5hunurk<\/td>\n\u00fcks<\/td>\nTavaliselt 20 kraadi; erinev v\u00e4\u00e4rtus muudab hammaste tugevust ja v\u00f5rgu geomeetriat<\/td>\n<\/tr>\n
T\u00e4ppisklass<\/td>\nDIN\/AGMA<\/td>\nVale klass = vale tolerants \u2013 defektsete osade tagasil\u00fckkamine v\u00f5i vastuv\u00f5tmine<\/td>\n<\/tr>\n
Hamba paksuse tolerants<\/td>\nNagu<\/td>\nPuudub = kontrollimatu tagasil\u00f6\u00f6k montaa\u017eis<\/td>\n<\/tr>\n
Pinna viimistlus Ra<\/td>\nRa<\/td>\nToidu-\/meditsiini-\/puhasruumi n\u00f5uete mittet\u00e4itmine<\/td>\n<\/tr>\n
Keskpunkti kauguse tolerants<\/td>\n+\/- tol<\/td>\nKorpuse t\u00f6\u00f6tlemise sihtm\u00e4rk; m\u00f5jutab l\u00f5tku ja kontakti kvaliteeti<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
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Korea Ever-Power<\/span><\/p>\n

Standarditele vastavad tooted koos CMM-i dokumentatsiooniga<\/h2>\n<\/div>\n
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\"Alloy<\/div>\n
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DIN 6 kuni DIN 9 \u2013 CMM-i aruanne on kaasas<\/div>\n
Alloy Steel Worm Gear Set — Standards-Documented<\/div>\n
Every Korea Ever-Power alloy steel worm gear set ships with a CMM inspection report documenting the actual measured values for each DIN 3976 parameter — not a pass\/fail statement, but the measured deviation values alongside the DIN class tolerance for comparison. Engineers can confirm precision class compliance and use the actual measured data when converting a DIN specification to AGMA class compliance for US OEM incoming inspection. Precision class options: DIN 9 standard, DIN 8 precision industrial, DIN 7 ground (automation), DIN 6 high precision (request). AGMA-equivalent compliance statements available when US OEM drawings require AGMA quality class documentation.<\/div>\n

Vaata tehnilisi andmeid<\/a><\/p>\n<\/div>\n<\/div>\n

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\"Precision<\/div>\n
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Profile-Matched — Contact Pattern Photo Included<\/div>\n
Precision Worm Wheel — DIN Drawing-Compliant<\/div>\n
When engineering drawings specify DIN or AGMA precision class, Korea Ever-Power manufactures the matching worm wheel and provides documentation confirming compliance against each DIN 3976 tolerance. CMM report covers bore diameter (6 measurement points confirming H7 compliance), tooth runout, and contact pattern coverage percentage. For customers requiring AGMA-format documentation from DIN-manufactured gears — common when Korean OEMs supply to US customers — supplementary AGMA compliance statements are prepared from the DIN-measured CMM data.<\/div>\n

Vaata tehnilisi andmeid<\/a><\/p>\n<\/div>\n<\/div>\n

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\"Duplex<\/div>\n
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DIN 5 to DIN 7 — Lead Difference Certified<\/div>\n
Duplex Worm Gear — Full DIN Precision Documentation<\/div>\n
The duplex worm requires one additional certified parameter beyond standard DIN 3976: the lead difference between left and right thread flanks — the parameter that enables backlash adjustment by axial shift. Korea Ever-Power measures and certifies the lead difference as a specific value (not a range) for each duplex set, allowing the installation engineer to calculate the exact axial shift required to achieve a target backlash. Precision class DIN 5 to DIN 7 as standard for duplex sets. Full documentation includes the lead difference certificate, standard CMM report, and contact pattern photograph.<\/div>\n

Vaata tehnilisi andmeid<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

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Standards FAQ<\/span><\/p>\n

Worm Gear Standards and Inspection — Questions from Quality Engineers<\/h2>\n<\/div>\n
\nMy customer drawing specifies AGMA Quality 10. What DIN class does Korea Ever-Power manufacture to satisfy this?+<\/span><\/summary>\n
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AGMA 10 corresponds approximately to DIN 7 for typical worm gear module and diameter combinations. Korea Ever-Power manufactures AGMA 10-equivalent gears at DIN 7 precision class (ground worm thread, DIN 3976 tolerances measured and reported). The exact relationship depends on gear size — for very small modules (M1-M2), DIN 7 may be slightly tighter than AGMA 10; for large modules (M8+), the relationship may differ. When an AGMA quality class is specified on a customer drawing, Korea Ever-Power provides the DIN-measured values alongside an AGMA class compliance statement confirming the actual measured deviations are within the AGMA 10 tolerance limits for the specific gear dimensions.<\/p>\n<\/div>\n<\/details>\n

\nWhat is the difference between quality grade and precision class in worm gear specification?+<\/span><\/summary>\n
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They refer to the same concept with different terminology by standard. DIN 3976 uses Qualitaetsstufe (quality grade), translated as precision class in English, numbered 3-12 with lower numbers being more precise. AGMA uses Quality Number (Q) numbered 3-14 with higher numbers being more precise — the numbering is inverted relative to DIN, which causes frequent confusion. ISO 10064-6 uses accuracy grade with a similar system to DIN. When specifying internationally, always confirm which numbering system is in use: DIN 8 and AGMA 8 have the same number but represent different precision levels — DIN 8 is significantly higher precision than AGMA 8.<\/p>\n<\/div>\n<\/details>\n

\nDoes Korea Ever-Power provide AGMA inspection reports, or only DIN format CMM reports?+<\/span><\/summary>\n
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Standard CMM reports are in DIN 3976 format, reporting measured values against DIN tolerance limits. When a US customer requires AGMA-format compliance documentation, Korea Ever-Power prepares an AGMA class compliance statement from the DIN-measured values — confirming that the measured profile deviation, lead deviation, and pitch variation satisfy the AGMA tolerance limits for the specified quality number at the specific module and pitch diameter. This service is available at no additional charge when AGMA documentation is requested at order placement. For orders where AGMA documentation is requested after shipment, allow 3-5 working days.<\/p>\n<\/div>\n<\/details>\n

\nHow is worm gear backlash measured, and is it documented in the inspection report?+<\/span><\/summary>\n
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Worm gear backlash is measured as the angular movement of the output shaft (worm wheel shaft) in degrees when the input shaft is held stationary and the output shaft is rotated alternately in both directions under a specified reference torque. The measurement is performed on a gear mesh test rig at theoretical centre distance. Backlash in angular units converts to linear at the wheel pitch radius. Korea Ever-Power measures backlash on the assembly test rig as part of the contact pattern test for precision class DIN 7 and better — the contact pattern photograph and backlash measurement are both included in delivery documentation. Standard supply (DIN 8-9) includes contact pattern documentation; backlash measurement available on request.<\/p>\n<\/div>\n<\/details>\n

\nWhat does total profile deviation Fa mean on a CMM report, and how does it affect gear noise?+<\/span><\/summary>\n
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Total profile deviation Fa is the peak-to-valley amplitude of the profile error in the normal section — the algebraic difference between the highest and lowest points on the actual profile relative to the theoretical involute. Small Fa means the thread profile closely matches the theoretical and load distributes uniformly across the engaged contact arc. Large Fa means local high and low points cause load concentration at high points, increasing Hertz contact stress, raising friction, and producing transmission error pulses at the mesh frequency. Fa is the primary source of worm gear mesh noise — reducing Fa through thread grinding (DIN 7 vs DIN 9) is the most effective single action for reducing worm gear acoustic output.<\/p>\n<\/div>\n<\/details>\n

\nWhat is the DIN standard for worm gear tooth thickness measurement?+<\/span><\/summary>\n
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Tooth thickness of a worm is measured by the measurement over balls (or pins) method as specified in DIN 3960 applied to worm gears via DIN 3975. A calibrated ball of specified diameter is placed in the thread space; the measurement over the ball with another ball diametrically opposite gives a dimension from which tooth thickness is calculated. The ball diameter is selected per the normal module and pressure angle to ensure contact at the pitch cylinder. Korea Ever-Power uses CNC gear measurement centres with touch-probe styli for thread flank profile and lead measurement, supplemented by pin measurement for tooth thickness verification at both the blank stage and after thread grinding. Both measurements appear in the CMM inspection report.<\/p>\n<\/div>\n<\/details>\n

\nFor dual-sourced supply of the same worm gear specification, how do I ensure interchangeability between two suppliers?+<\/span><\/summary>\n
\n

Define the specification to international standard tolerances, not proprietary callouts. Specify: module (exact value), tooth count, helix direction, pressure angle (20 deg standard), precision class (DIN class number), bore to H7 (exact diameter), keyway to DIN 6885A, and material to a composition standard with heat number traceability. Both suppliers must demonstrate compliance with the same CMM inspection report format. For initial qualification, compare actual measured values from both suppliers — not just pass\/fail reports — to confirm they achieve equivalent geometry. A first-article dimensional correlation review between two suppliers CMM reports is the most reliable way to confirm interchangeability before production quantities are committed.<\/p>\n<\/div>\n<\/details>\n

\nWhat minimum information does Korea Ever-Power need to produce a standards-compliant CMM report?+<\/span><\/summary>\n
\n

To issue a CMM report to DIN 3976, Korea Ever-Power needs: module m; number of starts z1; number of wheel teeth z2; normal pressure angle an; diameter quotient q (or pitch diameter d1); specified precision class (DIN grade number); and bore diameter with tolerance. With these parameters, the DIN 3976 tolerance values for each measured parameter can be calculated, and the measured deviations evaluated for compliance. If any parameter is missing from the order specification, Korea Ever-Power requests it before issuing the report — a report without confirmed specifications is not a valid quality document.<\/p>\n<\/div>\n<\/details>\n<\/div>\n

\n
\n

Standards-Compliant Supply with Full CMM Documentation<\/h2>\n

Specify the precision class (DIN or AGMA) and Korea Ever-Power confirms supply capability, CMM report format, and AGMA conversion documentation availability before the order is placed.<\/p>\n

Request Precision Supply<\/a>
\nSirvi tooteid<\/a><\/div>\n<\/div>\n<\/div>\n

Toimetaja: Cxm<\/p>","protected":false},"excerpt":{"rendered":"

Knowledge Series \u00b7 B8 \u00b7 Standards & Measurement Worm Gear Standards — DIN, ISO, and AGMA: What Each Measures and How They Compare A US customer drawing specifies AGMA 10. Your shop works to DIN. Which is tighter? What parameters does each standard actually measure? This guide resolves the confusion with a direct comparison table […]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[4774],"tags":[1394,1399],"class_list":["post-1917","post","type-post","status-publish","format-standard","hentry","category-worm-gear","tag-worm-gear","tag-worm-gear-worm"],"_links":{"self":[{"href":"https:\/\/wormwheelgear.top\/et\/wp-json\/wp\/v2\/posts\/1917","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wormwheelgear.top\/et\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wormwheelgear.top\/et\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wormwheelgear.top\/et\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wormwheelgear.top\/et\/wp-json\/wp\/v2\/comments?post=1917"}],"version-history":[{"count":4,"href":"https:\/\/wormwheelgear.top\/et\/wp-json\/wp\/v2\/posts\/1917\/revisions"}],"predecessor-version":[{"id":1921,"href":"https:\/\/wormwheelgear.top\/et\/wp-json\/wp\/v2\/posts\/1917\/revisions\/1921"}],"wp:attachment":[{"href":"https:\/\/wormwheelgear.top\/et\/wp-json\/wp\/v2\/media?parent=1917"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wormwheelgear.top\/et\/wp-json\/wp\/v2\/categories?post=1917"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wormwheelgear.top\/et\/wp-json\/wp\/v2\/tags?post=1917"}],"curies":[{"name":"t\u00f6\u00f6leht","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}