Kev tuag ntau lawm yuav tsum ua kom to taub (nias) los muab lub zog, txawv tuag loj, qauv hom yuav tsum tau xaiv txawv punch kom phim. Kev xaiv qhov tsim nyog ntawm cov punch tuaj yeem txo nqi thiab txuag nyiaj.
Tus txheej txheem tseem ceeb ntawm kev xaiv tuag punch yog ntsuas los ntawm tonnage, uas feem ntau yog tau los ntawm kev suav ntawm lub zog seem, tsim kev quab yuam, nias quab yuam thiab tawm dag zog yuam. Lub ntsiab yog blanking quab yuam.
Cov lus tsis siv zog tsis yog hloov pauv, thiab nws cov kev hloov pauv ntawm lub sijhawm stamping yog raws li nram no: thaum cov punch pib hu rau cov khoom stamping, lub zog seem yog ib txwm nyob hauv ib lub xeev nce zuj zus. Thaum lub punch nkag mus txog 1/3 ntawm cov khoom tuab, lub zog blanking mus txog tus nqi siab tshaj plaws. Tom qab ntawd, vim qhov pom ntawm cov khoom tawg tsam, lub zog yuav maj mam poob. Yog li ntawd, qhov muab xam ntawm lub zog blanking yog los laij lub siab tshaj plaws blanking quab yuam.

Muab xam los ntawm cov quab yuam blanking
Muab xam cov mis ntawm cov quab yuam blanking: P = L * t * KS kg
Nco tseg: P yog lub zog yuam kom ua rau seem, hauv kg
L yog qhov sib txig sib txuam puag ncig ntawm cov khoom lag luam, hauv mm
T yog cov khoom thickness, nyob rau hauv mm
KS yog shear lub zog ntawm cov khoom, hauv kg / hli 2
Feem ntau, thaum cov khoom seem ua los ntawm cov hlau tsis huv, qhov tshwj xeeb muaj nuj nqis ntawm cov khoom shear lub zog yog li hauv qab no: KS = 35kg / mm2
Piv txwv:
Piv txwv cov khoom tuab t = 1.2, cov khoom yog mos steel phaj, thiab cov khoom lag luam xav tau punch daim duab sib dhos nrog cov duab 500mmx700mm. Dab tsi yog lub zog quab yuam?
Teb: raws li tus qauv xam: P = l × t × KS
L = (500 + 700) × 2 = 2400
t = 1.2, Ks = 35Kg / mm²
Yog li ntawd, P = 2400 × 1.2 × 35 = 100800kg = 100t
Thaum xaiv cov tonnage, 30% yuav tsum ntxiv ntxiv ua ntej. Yog li ntawd, qhov tonnage yog li 130 tons.