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press brake is a machine with twins oli cylinders for bending the stroker to the metal plate After bending force you take five poitn for meassure the Angle of the bend metal for example A1 A2 A3 A4 A5 It will happened A1= 90 DEGREE A2= 91 DEGREE A3= 93 DEGREE A4= 91 DEGREE A5= 90 DEGREE So as this moment we need a cowning system to balance the angle for one full lenght of metal sheet for Nc ...
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