Kev ua cov txheej txheem ncab yog ib txoj kev ua cov ntawv luam tawm uas siv pwm los ua ib daim tiaj tiaj rau hauv ib qho chaw qhib hollow. Raws li ib qho ntawm cov txheej txheem stamping tseem ceeb, kev ncab yog siv dav. Cov txheej txheem ncab tuaj yeem siv los ua cylindrical, rectangular, stepped, spherical, conical, parabolic thiab lwm yam phab ntsa tsis sib xws. Yog tias nws tau ua ke nrog lwm cov txheej txheem stamping, nws kuj tseem tuaj yeem tsim cov khoom nrog cov duab nyuaj dua.

Siv cov khoom siv stamping rau kev ua cov khoom ncab, suav nrog: kev ua cov khoom ncab, kev ua cov khoom rov ncab, kev ncab rov qab thiab kev ua cov khoom ncab nyias nyias, thiab lwm yam. Kev ua cov khoom ncab: Siv lub cuab yeej nias phaj kom siv lub zog xuas nrig ntawm lub xuas nrig kom rub ib feem lossis tag nrho cov khoom tiaj tus rau hauv qhov ntawm lub pwm concave kom ua rau nws ua lub thawv nrog hauv qab. Kev ua cov phab ntsa sab ntawm lub thawv sib luag rau qhov kev taw qhia ncab yog kev ua cov khoom ncab ntshiab, thaum kev ua cov khoom ncab ntawm cov thawv conical (lossis pyramid) zoo li, cov thawv hemispherical, thiab cov thawv parabolic nto kuj suav nrog kev ua cov khoom nthuav dav.

Rov ua dua: uas yog, rau cov khoom kos tob uas tsis tuaj yeem ua tiav hauv ib qho txheej txheem ncab, nws yog qhov tsim nyog los ncab cov khoom tsim tom qab ua tiav ncab kom nce qhov tob ntawm lub thawv tsim.

Kev ua haujlwm ncab rov qab: Rov qab ncab cov khoom ua haujlwm ncab hauv cov txheej txheem dhau los, sab hauv ntawm cov khoom ua haujlwm dhau los ua sab nraud, thiab kev ua kom lub cheeb sab nraud me dua yog nyias dua. Hauv qhov kab noj ntawm cov pwm concave nrog lub cheeb sab nraud me dua me ntsis, lub cheeb sab nraud ntawm lub thawv nrog hauv qab raug txo qis, thiab lub phab ntsa tuab yog nyias tib lub sijhawm, uas tsis tsuas yog tshem tawm qhov sib txawv ntawm lub phab ntsa tuab, tab sis kuj ua rau qhov chaw ntawm lub thawv du.

Cov hauv qab no qhia txog ob hom kev stamping hlau thiab kev ncab thaum siv cov khoom siv stamping:

1. Kev ua duab kos cylindrical + (Duab puag ncig): ncab cov khoom cylindrical. Ob qho tib si flange thiab hauv qab yog nyob rau hauv ib lub dav hlau zoo li, phab ntsa sab ntawm lub tog raj kheej yog axisymmetric, thiab qhov deformation yog sib npaug zos faib rau tib lub voj voog, thiab cov plaub hau ntawm flange raug puas tsuaj los ua rau muaj kev kos duab tob.

2. Kev ua duab kos ellipse + (Duab kos ellipse): Qhov kev hloov pauv ntawm cov plaub hau ntawm lub flange yog tensile deformation, tab sis qhov deformation thiab deformation piv hloov pauv raws li cov duab contour. Qhov loj dua qhov curvature, qhov ntau dua ntawm cov yas deformation ntawm cov plaub hau, thiab qhov sib piv, qhov me dua qhov curvature, qhov me dua qhov yas deformation ntawm cov plaub hau.