I. Lub tswv yim ntawm Blanking Clearance
Blanking clearance hais txog qhov sib txawv ntawm cov npoo ntawm cov punch thiab tuag hauv cov pwm hlau.
Ib txwm: Upper thiab qis micro- cracks coincide.
Muaj ib qho - sab thiab ob - sab kev tshem tawm.
II. Kev cuam tshuam ntawm Blank Clearance ntawm Stamping
1. Kev cuam tshuam ntawm Clearance ntawm Hla -Section Quality
Ib txwm: Cov kab nrib pleb sab saud thiab qis sib npaug, qhov loj ci ci, me me burrs, me me, me me burrs, thiab me me taper, du nto;
Ntau dhau: Cov kab nrib pleb sab sauv thiab sab qis tsis sib xws, tawg thiab tawg, ntu ntu ntu, me me ci band, loj burrs thiab loj taper;
Ntau dhau: Cov kab nrib pleb sab sauv thiab qis tsis sib xws, qhov sib txawv ntawm cov shearing tshwm sim, ua rau lub ntsej muag ci thib ob, burrs loj;
Tsis sib xws: Sab nrog cov kev tshem tawm me me nthuav tawm qis -kev zoo hla- ntu cov yam ntxwv, thiab sab nrog cov kev tshem tawm loj dua nthuav tawm siab - tshem tawm hla- ntu cov yam ntxwv zoo.
2. Kev cuam tshuam ntawm Clearance ntawm Dimensional raug
Vim elastic deformation, elastic rov qab tshwm sim tom qab blanking, ua rau qhov sib txawv ntawm qhov ntev thiab qhov ntev ntawm cov punch thiab tuag txiav npoo. Qhov loj ntawm elastic deformation yog ncaj qha cuam tshuam rau qhov blanking clearance.
Kev tshem tawm ntau ntxiv ua rau muaj kev rub tawm sab hauv ntawm cov hlau, ua rau cov khoom ua haujlwm ntau ntxiv (qhov loj) vim elastic rov qab. Nce hlau tensile zog thiab txo qhov workpiece loj (tsawg workpiece loj) vim elastic rov qab.
Hloov pauv, txo qis tshem tawm ua rau muaj kev ntxhov siab ntawm cov hlau, ua rau lub qhov me me. Ua kom lub siab sab hauv ntawm cov hlau kuj ua rau kom muaj zog workpiece loj.
3. Qhov cuam tshuam ntawm kev tshem tawm ntawm Punching Force: qhov me dua qhov kev tshem tawm, qhov ntau dua qhov kev nyuab siab compressive thiab qhov me me ntawm tensile kev nyuaj siab nyob rau hauv lub deformation cheeb tsam, ua rau cov khoom tsis kam mus rau deformation thiab yog li lub zog punching ntau dua. Hloov pauv, qhov kev tshem tawm loj dua ua rau muaj kev ntxhov siab ntau dua nyob rau hauv cheeb tsam deformation, txo deformation tsis kam thiab yog li qhov me me ntawm cov punching quab yuam. Thaum qhov kev tshem tawm mus txog 5% -20% ntawm cov khoom tuab, qhov txo qis hauv kev xuas nrig ntaus tsis tseem ceeb.
Thaum lub clearance ntawm ib sab nce mus rau 15% -20% ntawm cov khoom thickness, lub unloading quab yuam yog xoom.
4. Qhov cuam tshuam ntawm kev tshem tawm ntawm lub neej tuag: Vim muaj kev sib txhuam ntawm lub workpiece thiab sidewalls ntawm cov punch thiab tuag, qhov kev tshem tawm me me ua rau muaj kev sib txhuam ntau dua thiab lub neej luv dua. Thaum lub sij hawm blanking txheej txheem, kev sib txhuam tshwm sim ntawm cov punch thiab qhov khoob, thiab nruab nrab ntawm qhov tuag thiab cov khoom blanking. Qhov tsawg dua qhov clearance, qhov kev sib txhuam hnyav dua. Yog li ntawd, kev tshem tawm me me ntau dhau ua rau muaj kev puas tsuaj rau lub neej tuag, thaum cov kev tshem tawm loj dua txo kev sib txhuam ntawm ob sab ntawm cov punch thiab tuag thiab cov khoom siv, txo cov teebmeem ntawm qhov tsis sib xws thiab yog li txhim kho lub neej tuag.
5. Kev txiav txim siab txog tus nqi Clearance tsim nyog
Kev xaiv ntawm kev tshem tawm lub hom phiaj kom ua tiav cov ntoo khaub lig zoo dua -sectional zoo, siab dua qhov tseeb, qis qis quab yuam, thiab lub neej ntev dua.
Qhov kev tshem tawm tsim nyog yog hais txog ntau yam ntawm qhov tseem ceeb: qhov siab tshaj plaws tsim nyog tshem tawm thiab qhov tsawg kawg tsim nyog tshem tawm. Kev txiav txim siab qhov kev tshem tawm yuav tsum ua tib zoo xav txog qhov cuam tshuam ntawm cov xwm txheej saum toj no thiab xaiv qhov tsim nyog tshem tawm raws li qhov tsim nyog tshem tawm. Nws cov kev txwv sab sauv yog qhov siab tshaj plaws tsim nyog clearance, thiab nws cov kev txwv qis yog qhov tsawg kawg nkaus tsim nyog clearance; uas yog, qhov tsim nyog clearance yog hais txog ntau yam ntawm qhov tseem ceeb. Thaum tsim cov tuag, raws li cov kev cai tshwj xeeb ntawm cov khoom ua haujlwm thiab ntau lawm,
cov hauv qab no tuaj yeem ua raws li kev xaiv:
(1) Thaum tus ntoo khaub lig-sectional zoo ntawm lub workpiece tsis nruj me ntsis yuav tsum tau, ib tug loj clearance tus nqi yuav raug xaiv los txhim kho lub neej tuag thiab txo blanking quab yuam. (2) Thaum lub workpiece cross-sectional quality thiab manufacturing tolerance siab, yuav tsum xaiv tus nqi me me clearance.
(3) Thaum xam qhov txiav ntug loj ntawm qhov tuag qhov tuag, txiav txim siab tias qhov hnav ntawm qhov tuag thaum lub sij hawm siv yuav ua rau kom qhov txiav ntug clearance, tus nqi ntawm Zmin yuav tsum tau siv rau kev xam.
