Cutting Force Formula For Sheet Metal

Ultimate tensile strength psi.

Cutting force formula for sheet metal.

Box bending the process of bending a 4 sided sheet metal box. The resulting drawing force cannot be used as failure criteria for cup drawing. F s p dt where f is the maximum punch force in pounds s is the nominal tensile strength of the material being drawn psi d is the punch or cup diameter and t is the blank thickness. Sheet metal knowledge menu sheet metal manufacturing and services.

δ x plate elongation ratio. If you punch round holes or square holes or some other forms of holes through a given thickness of metal you just want to know the force required to punch a hole in steel. Bottom bending one of the three types of bending for sheet metal where the radius of the punch tip is pushed into the sheet metal. Thus the force equals pressure times the cross sectional area of the cup wall.

In the cutting force formula σ b plate tensile strength limit n mm. F cutting force s material thickness l total cutting length a l x s shear area tß shear strength note. Shear strength 80 of tensile strength. α cutting angle.

F is force required in pounds p is perimeter around area to be sheared inches t is sheet thickness in inches psi is the shear strength rating of the material in pounds per square inch. Blanking the process of cutting flat patterns from stock sheeting done typically with lasers water jets plasmas or punch presses. This equation will calculate the force required to pierce or shear sheetmetal. The cutting force calculation of inclined blade shear with blade support in straight motion mainly use the norshari formula by the former soviet scholar.