Xaiv cov txheej txheem pwm
Kev tuag nyob ntawm qhov tuag thiab ntsig txog cov khoom punched.Unreasonable khoob tuaj yeem ua rau cov teeb meem hauv qab no:
(1) Yog tias qhov sib txawv loj heev, cov burr ntawm qhov chaw ua haujlwm ntawm lub thwj cim yog ib qho loj thiab qhov zoo ntawm lub thwj cim yog cov neeg pluag.Yog hais tias qhov sib txawv me me, txawm tias qhov zoo ntawm qhov xuas nrig yog qhov zoo, zoo txo cov kev pabcuam lub neej ntawm pwm, thiab yoojyim ua rau cov punch so.
(2) yog qhov sib txawv loj los yog tsawg heev, nws yooj yim ua rau kev nplua rau cov khoom siv punch, yog li tsim cov khoom thaum thwj. Yog tias qhov sib txawv me me, nws yog ib qho yooj yim uas tsim ib lub tshuab nqus tsev ntawm lub qab ntawm punch thiab lub phaj, uas ua rau cov pov tseg rov qab.
(3) kev tsim nyog muaj peev xwm ntxiv tau lub neej hauv kev tuag, muaj cov nyhuv tawm zoo, txo cov npoo thiab flanging, khaws daim ntawv tais, khaws tib lub qhov ncauj thiab tsis khawb lub phaj, txo cov xov tooj ntawm kev sib tsoo, khaws lub phaj ncaj thiab meej punching positioning.