BAILEY ShEEt MEtAL ScrEwS ProDuct Data Sheet 2 Design Equations for tension (S136 clause E4.4) www.bmp-group.com tension in Screws (S136 Clause e4.4.3): The nominal tensile resistance of the screw is taken as Pts. Design Equations for Shear (S136 clause E4.3) Connection Shear Limited by tilting and Bearing (S136 Clause e4.3.1): For t 2 / t 1
TONNAGE CALCULATION Use the guidelines below to calculate the needed tonnage for your stamping project. General Formula for Press Tonnage Required Determine the approximate press tonnage needed to stamp a part based on linear inches of cut.
Cutting processes are those in which a piece of sheet metal is separated by applying a great enough force to caused the material to fail. The most common cutting processes are performed by applying a shearing force, and are therefore sometimes referred to as shearing processes.
I had already looked at the Efunda stuff, but the calculations are for punching (ie shearing the metal about the shapes' perimeter) rather then piercing with a point or edge. Maybe there's no real difference in the loads required? It has been a while since I last dealt with sheet metal, and I had forgotton about the DSM website. Cheers :) SHEARING FORCE The thickness capacity of all shears is limited by the shearing force required. The shear must produce more force than that needed to cut the thickest material. Shearing force is roughly the product of material shear strength and the area under shear. Area under shear is established by the shear rake angle, the Sheet Metal Two Flanges Overlap Clearance Width Socket Design Equations and Calculator; Sheet Metal Two Flanges Overlap Clearance Width Swaging Tool Design Equations and Calculator; Custom Sheet Metal Fabrication Review; Dampers HVAC Industrial; Design for Deep Drawing Sheet Metal Stamping Review; Force to Shear or Pierce Sheet Metal ; Sheet ... – side force – nip velocity vs. web velocity – slitter geometry – trim removal Blade Sharpness / Profile In rotary shear process, materials are slit in the nip between two overlapping, hardened metal disks which create stress in the shear mode sufficient to sever the product. This is in contrast to compressive stress when crush/score The cutting force in a sheet-metal blanking operation depends on which mechanical property of the metal (one correct answer): (a) compressive strength, (b) modulus of elasticity, (c) shear strength, (d) strain rate, (e) tensile strength, or (f) yield strength?