Dab tsi yog lub teb chaws tus qauv rau qhov loj kam rau ua ntau yam ntawm lub tsheb txhaj tshuaj?
Lub teb chaws tus qauv rau qhov loj kam rau ua ntau yam ntawm automotive txhaj qhov chaw yog GB / T 14486-2008 "Plastic molded Parts Size Tolerance".Cov txheej txheem no qhia txog qhov ntev ntev ntawm cov yas molded qhov chaw, thiab haum rau cov yas molded qhov chaw uas txhaj, nias thiab txhaj tshuaj.
Raws li lub teb chaws tus qauv, qhov siab kam rau ua ntau yam ntawm cov tsheb txhaj tshuaj yog muab faib ua qib A thiab B.Class A precision yuav tsum muaj siab, haum rau precision txhaj qhov chaw;Qib B precision qhov yuav tsum tau muaj tsawg, haum rau kev txhaj tshuaj dav dav.Qhov tshwj xeeb tolerance range yog raws li nram no:
(1) Linear dimensional kam rau ua:
Linear dimensions hais txog qhov ntev raws qhov ntev.Rau Chav Kawm A txhaj tshuaj molded qhov chaw, qhov kam rau ua ntawm linear loj yog ± 0.1% rau ± 0.2%;Rau Chav Kawm B txhaj tshuaj molded qhov chaw, qhov kam rau ua rau qhov ntev yog ± 0.2% rau ± 0.3%.
(2) Lub kaum sab xis:
Lub kaum sab xis yog hais txog lub kaum sab xis sib txawv ntawm cov duab thiab txoj hauj lwm kam rau ua.Rau Chav Kawm A txhaj tshuaj molded qhov chaw, lub kaum sab xis yog ± 0.2 ° txog ± 0.3 °;Rau Chav Kawm B txhaj tshuaj molded qhov chaw, lub kaum sab xis yog ± 0.3 ° txog ± 0.5 °.
(3) Daim ntawv thiab txoj hauj lwm kam rau ua:
Daim ntawv thiab txoj hauj lwm kam rau ua muaj xws li roundness, cylindricity, parallelism, verticality, thiab lwm yam. Rau chav kawm A txhaj tshuaj, daim ntawv thiab txoj hauj lwm kam rau ua yog muab raws li chav kawm K nyob rau hauv GB / T 1184-1996 "Shape thiab Position Tolerances tsis tau teev tus nqi kam rau ua";Rau chav kawm B txhaj tshuaj, daim ntawv thiab txoj hauj lwm kam rau ua yog muab raws li chav kawm M hauv GB / T 1184-1996.
(4) Nto roughness:
Deg roughness yog hais txog cov degree ntawm microscopic unevenness ntawm machined nto.Rau chav kawm A txhaj tshuaj molded qhov chaw, qhov chaw roughness yog Ra≤0.8μm;Rau chav kawm B txhaj tshuaj molded qhov chaw, qhov roughness yog Ra≤1.2μm.
Tsis tas li ntawd, rau qee qhov kev xav tau tshwj xeeb ntawm cov tsheb txhaj tshuaj, xws li cov cuab yeej ntsuas hluav taws xob, qhov chaw nruab nrab, thiab lwm yam, qhov kev cia siab ntawm qhov ntev yuav siab dua, thiab yuav tsum tau tswj raws li cov khoom siv tshwj xeeb.
Nyob rau hauv luv luv, lub teb chaws tus qauv rau lub Scope ntawm dimensional kam rau ua ntawm automotive txhaj qhov chaw yog GB / T 14486-2008 "Dimensional kam rau ua ntawm yas molded qhov chaw", uas qhia meej txog qhov yuav tsum tau ntawm dimensional kam rau ua, zoo thiab txoj hauj lwm kam rau ua thiab nto roughness ntawm yas molded. ntu.Hauv kev tsim khoom tiag tiag, nws yog qhov tsim nyog los kho thiab ua kom zoo raws li cov khoom xav tau thiab tsim pwm los xyuas kom meej tias lub tsheb txhaj tshuaj raws li qhov yuav tsum tau ua.
Post lub sij hawm: Dec-06-2023