Cutting Force Formula For Sheet Metal

Sheet metal knowledge menu sheet metal manufacturing and services.

Cutting force formula for sheet metal.

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. The resulting drawing force cannot be used as failure criteria for cup drawing. Punching force calculation formula. In the cutting force formula σ b plate tensile strength limit n mm.

Thus the force equals pressure times the cross sectional area of the cup wall. 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. α cutting angle. The cutting force calculation of inclined blade shear with blade support in straight motion mainly use the norshari formula by the former soviet scholar.

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. This equation will calculate the force required to pierce or shear sheetmetal. δ x plate elongation ratio. 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.

Blanking the process of cutting flat patterns from stock sheeting done typically with lasers water jets plasmas or punch presses. Ultimate tensile strength psi. F p x t x psi. Box bending the process of bending a 4 sided sheet metal box.