Mafotokozedwe Okhazikika a Zomangira

Miyezo yomwe imagwiritsidwa ntchito kwambiri ndi iyi:
GB-China National Standard (National Standard)
Muyezo Wadziko Lonse wa ANSI-American (Muyezo Waku America)
Muyezo wa DIN-German National (Muyezo wa Germany)
Muyezo wa ASME-American Society of Mechanical Engineers
JIS-Muyezo Wadziko Lonse wa ku Japan (Muyezo wa ku Japan)
BSW-British National Standard

Kuwonjezera pa kukula koyambira, monga makulidwe a mutu ndi mbali ina ya mutu, gawo losiyana kwambiri la miyezo yomwe yatchulidwa ya zomangira ndi ulusi. Ulusi wa GB, DIN, JIS, ndi zina zotero uli mu MM (millimeters), womwe umatchedwa ulusi wa metric. Ulusi monga ANSI, ASME, uli mu mainchesi ndipo umatchedwa ulusi wokhazikika wa ku America. Kupatula ulusi wa metric ndi ulusi waku America, palinso muyezo wa BSW-British, ndipo ulusiwo ulinso mu mainchesi, womwe umadziwika kuti ulusi wa Whitworth.

Ulusi wa metric uli mu MM (mm), ndipo ngodya yake ya cusp ndi madigiri 60. Ulusi wa ku America ndi wa Imperial umayesedwa mu mainchesi. Ngodya ya cusp ya ulusi wa ku America nayonso ndi madigiri 60, pomwe ngodya ya cusp ya ulusi wa ku Britain ndi madigiri 55. Chifukwa cha mayunitsi osiyanasiyana oyezera, njira zoyimira ulusi wosiyanasiyana ndizosiyana. Mwachitsanzo, M16-2X60 imayimira ulusi wa metric. Izi zikutanthauza kuti m'mimba mwake wa nominal wa screw ndi 16MM, pitch ndi 2MM, ndipo kutalika ndi 60MM. Chitsanzo china: 1/4-20X3/4 amatanthauza ulusi wa dongosolo la ku Britain. Tanthauzo lake lenileni ndilakuti m'mimba mwake wa nominal wa screw ndi 1/4 inchi (inchi imodzi = 25.4MM), pali mano 20 pa inchi imodzi, ndipo kutalika kwake ndi 3/4 inchi. Kuphatikiza apo, ngati mukufuna kusonyeza zomangira zopangidwa ku America, UNC ndi UNF nthawi zambiri zimawonjezedwa pambuyo pa zomangira zopangidwa ku Britain kuti zisiyanitse pakati pa ulusi wolimba wopangidwa ku America ndi ulusi wopyapyala wopangidwa ku America.

Yihe enterprise ndi kampani yodziwika bwino popanga zomangira za amchine zopangidwa ku US ANSI, zomangira za makina a BS, bolt corrugated, indlcuidng 2BA, 3BA, 4BA; zomangira za makina zopangidwa ku Germany DIN (DIN84/ DIN963/ DIN7985/ DIN966/ DIN964/ DIN967); GB Series ndi mitundu ina ya zinthu zokhazikika komanso zosakhala zokhazikika monga zomangira zamakina ndi mitundu yonse ya zomangira zamakina zamkuwa.