Punching Force Sheet Metal

F 0 7 t l u t s displaystyle f 0 7tl uts where t is the sheet metal thickness l is the total length sheared perimeter of the shape and uts is the ultimate tensile strength of the material.

Punching force sheet metal.

Alternatively if a sheet has symmetrical hole patterns you may be able to punch half the sheet flip it over then punch the other half. A pure punching machine with an automatic conveyor system can process sheet sizes of 1250 x 2500 mm. Once it contacts the sheet metal surface it senses the resistance and drives the punch downward with enough force to penetrate the material. The ram with guide rail and guide carriage or indexing slide is shuttling the punching punch to the sheet metal.

The punch force required to punch a piece of sheet metal can be estimated from the following equation. Tonnage in mild steel 3 1416 x diameter of hole x material thickness x 25 example. 3 1416 x 2 000 x 250 x 25 39 26 tons. Shape a dimension ld land distance.

Punching force calculation how to calculate punching force in tons punching force 25 x land distance x material thickness x material factor x shear factor note. Create a raised edge in sheet metal that locks into the rolled edge of another piece. A true b false 42. It guarentees a clean distortion free contact with the sheet metal.

1 ton 8 90 kn. Punch force kn 80 x 3 x 0 3447 82 728 kn convert into tonnage. This tends to equalize the sheet stretching of both halves. The maximum sheet density is up to 4 mm.

For proper stretching operation the metal sheet should be stressed above its yield strength. 82 728 kn 9 81 8 43 ton punching force calculator p s. If you want to calculate hydraulic press tonnage you can use our hydraulic press tonnage calculator. The maximum dimensions of the punching process are of course related to the selected punching machine.

Punching is a process of creating a hole over a sheet metal while blanking operation is a process of creating a blank out of the sheet metal. How to obtain tonnage required for punching round holes. Sheet metal hole flaring dies create flares around already cut holes in sheet metal up to 3 16 thick to make the edges stronger and more rigid. In metal construction and the building industry use punching to produce profiles in sheet metal.

A true 6 false 41. 6 the special scrap discharge slug removal unit slug chute or slug suction depend on the press type and application. The recommended sheet thickness for cnc punching is. Cnc punching is generally suitable for punching low carbon steel electrolytic plate aluminum zinc plate aluminum plate copper plate with t 3 5 4mm or less and stainless steel plate with t 3mm or less.