Punching Force Sheet Metal

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Punching force sheet metal.

Also known as dimple dies. The recommended sheet thickness for cnc punching is. The maximum dimensions of the punching process are of course related to the selected punching machine. Shape a dimension ld land distance.

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. 6 the special scrap discharge slug removal unit slug chute or slug suction depend on the press type and application. How to obtain tonnage required for punching round holes. It guarentees a clean distortion free contact with the sheet metal.

If you want to calculate hydraulic press tonnage you can use our hydraulic press tonnage calculator. 1kn 112 tons station size land distance the larger the perimeter of the cut hole the larger the tonnage required. The punch force required to punch a piece of sheet metal can be estimated from the following equation. Once it contacts the sheet metal surface it senses the resistance and drives the punch downward with enough force to penetrate the material.

This tends to equalize the sheet stretching of both halves. The aluminum alloy plate and the copper plate are 0 8 0mm. Punch force kn 80 x 3 x 0 3447 82 728 kn convert into tonnage. 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.

The ram with guide rail and guide carriage or indexing slide is shuttling the punching punch to the sheet metal. 3 1416 x 2 000 x 250 x 25 39 26 tons. The maximum sheet density is up to 4 mm. 1 ton 8 90 kn.

Tonnage in mild steel 3 1416 x diameter of hole x material thickness x 25 example. For proper stretching operation the metal sheet should be stressed above its yield strength. 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. 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.

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. 82 728 kn 9 81 8 43 ton punching force calculator p s. A true b false 42. A pure punching machine with an automatic conveyor system can process sheet sizes of 1250 x 2500 mm.