How to calculate how much tonnage high-speed punch?-Speed ​​press tonnage is calculated

If you simply want to know how much they should buy tonnage high-speed presses, it is recommended that you directly dial our service telephone consultation (400-1166-758), we will come to recommend the right speed according to your actual production needs punch, punch speed is below the tonnage calculation formula.
P = P stamping punching Stripper + P + P + P pusher BHF + P drawing force. (According to the type of punch die does not come in, do not count)
1, the pressing force is to select press tonnage, mold strength. Stiffness check basis.
2. Punching Force: Punching Forces and peripheral factors: the plate material separating movement called blanking force.
   The main factors affecting the punching force:
   Blanking force calculation:
Formula: P = K * L * t * τ
       ;   P-- flat edge blanking force (N);
          t-- Material Thickness (mm);
          L-- blanking circumference (mm);
         τ-- material shear strength (MPa); check the manual of different materials are not the same
          K-- safety factor, generally take K = 1.3.
         The calculated result unit KN
3, the discharge power: the workpiece or waste material removed from the punch force
Px = KxP punch
        Wherein Kx- Kx- discharge coefficient of 0.04 was calculated with reference to the number of units of KN results
4, pushing member force: the workpiece or waste along the direction from the inner die punching force launched
        Pt = KtPn
Kt- coefficient n- pushing member in a few pieces left inside the die hole

        Where: Px, Pt - were unloading the force, push force member
Kx, Kt is a correction coefficient, respectively, of the two forces
P-- blanking force;
N-- check the number table being stuck in the hole of the die
     ;   Reference number Kt of 0.05, the result in units of KN
5, BHF: P y = 1/4 [D2- (d1 + 2R concave) 2] P

 ;       Wherein
        D ------ blank diameter
        d1 ------- die diameter
         R ----- concave radius of die
        p -------- drawing force

6, drawing force: Fl = d1 bk1 (N)

     Wherein
        d1 ----- first drawing diameter (mm)
        b ----- tensile strength (Mpa)
        Correction coefficient K