Vim li cas hlau stamping qhov chaw zoo li twisted?

Lub stamping ib feem yog tsim nyob rau hauv lub zuj zus tuag los ntawm kev xuas nrig ntaus cov khoom seem nyob ib ncig ntawm lub stamping ib feem los tsim cov duab ntawm stamping ib feem. Lub ntsiab yog vim li cas rau txoj kev tig thiab distortion ntawm cov xuas nrig ntaus qhov chaw yog lub zog ntawm lub punching quab yuam. Thaum xuas nrig ntaus, vim muaj qhov sib txawv ntawm qhov punching, cov khoom yog ncab ntawm ib sab ntawm qhov tuag (cov khoom yog warped upwards) thiab compressed rau ntawm lub punch. Thaum siv lub unloading phaj, lub unloading phaj yog siv los compress cov khoom los tiv thaiv cov khoom nyob rau sab tuag los ntawm warping upwards. Lub sijhawm no, lub zog ntawm cov khoom hloov pauv raws li. Raws li lub phaj tso tawm tsub kom nws lub zog nias, cov khoom ntawm lub punch sab yog stretched (compression quab yuam yuav txo qis), thaum cov khoom nyob rau hauv concave tuag nto yog compressed (tension quab yuam yuav txo). Lub overturning ntawm qhov chaw stamping yog tshwm sim los ntawm kev ncab ntawm cov khoom ntawm qhov tuag nto. Yog li ntawd, thaum xuas nrig ntaus, nias thiab compressing cov khoom yog lub ntsiab lus tseem ceeb los tiv thaiv kev xuas nrig ntaus los ntawm kev tig thiab sib tw.

Cov laj thawj thiab kev tiv thaiv ntawm kev tig thiab sib tw ntawm qhov chaw stamping thaum khoov: 1 Nws yog tshwm sim los ntawm cov burrs ntawm stamping qhov chaw tsim thaum lub sij hawm blanking. Yuav tsum tau kawm txog kev txiav ntug, thiab ua tib zoo saib xyuas seb qhov khoob khoob khoob puas tsim nyog. 2 Txoj kev tig, distortion thiab deformation ntawm cov punched qhov chaw tau tshwm sim thaum lub sij hawm blanking txheej txheem, ua rau tsis zoo tsim tom qab khoov, uas yuav tsum tau daws los ntawm lub blanking thiab unloading chaw nres tsheb. 3 Nws yog tshwm sim los ntawm instability ntawm stamping qhov chaw thaum khoov. Feem ntau rau U-shaped thiab V-shaped dabtsi yog khoov. Txhawm rau daws qhov teeb meem no, kev taw qhia cov khoom stamping ua ntej khoov, kev taw qhia thaum lub sij hawm khoov, thiab nias cov khoom thaum lub sij hawm khoov kom tsis txhob stamping qhov chaw los ntawm slipping thaum khoov yog cov ntsiab lus tseem ceeb los daws qhov teeb meem.