calculo tonelaje para el punzonado ENG - Prada Nargesa · In case the machine tonnage does not...
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Transcript of calculo tonelaje para el punzonado ENG - Prada Nargesa · In case the machine tonnage does not...
![Page 1: calculo tonelaje para el punzonado ENG - Prada Nargesa · In case the machine tonnage does not allow making the hole, there is the possibility of buying sloped cut punches. Resistence](https://reader031.fdocuments.in/reader031/viewer/2022031216/5bdc2e5709d3f263278d6584/html5/thumbnails/1.jpg)
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a
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P = (π x b) + 2 x (a – b)
P = 2 x a + 2 x b
P = 4 x a
P = π x Ø π = 3,1416
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Ton = Required tons for punchingP= Perimeter of the hole to be doneE= Material thicknessD= Material hardness in Kg/mm
(P) PERIMETER OF MOST COMMONLY USED HOLES
COMPUTE TONNAGE FOR PUNCHING
(D) MATERIAL HARDNESS IN Kg/mm (N/mm )
Aluminum 30 Kg/mm (300 N/mm )Brass 25 Kg/mm (250 N/mm )Cupper 22 Kg/mm (220 N/mm )Mild steel 45 Kg/mm (450 N/mm )Stainless steel 85 Kg/mm (850 N/mm )
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COMPUTE TONNAGE FOR PUNCHING
PRADA NARGESA, S.L. · Ctra de Garrigàs a Sant Miquel s/n 17476 Palau de Sta. Eulalia (Girona) SpainTel. 972 568085 · Fax 972 568320 · www.nargesa.com · [email protected]
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Ton = P x E x D
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Approximate average values
![Page 2: calculo tonelaje para el punzonado ENG - Prada Nargesa · In case the machine tonnage does not allow making the hole, there is the possibility of buying sloped cut punches. Resistence](https://reader031.fdocuments.in/reader031/viewer/2022031216/5bdc2e5709d3f263278d6584/html5/thumbnails/2.jpg)
In case the machine tonnage does not allow making the hole, there is the possibility of buying sloped cut punches. Resistence of material while punching is much lower.
EXAMPLE
Ø = Punch 18 mmE = 10 mmD = Mild steel 45 Kg/mm
P = π x ØP = 3,1416 x 18P = 56,54 mmTon = P x E x D /1000Ton = 56,54 x 10 x 45 / 1000Ton = 25,44 tons
IMPORTANT
The diameter of the hole to be made must be always bigger than the material thickness to avoid any possible breakages. E.g.: With a 10mm punch we cannot punch a 15mm thickness sheet, on the other hand we could punch 10mm metal sheet with a 15mm diam.
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COMPUTE TONNAGE FOR PUNCHING
PRADA NARGESA, S.L. · Ctra de Garrigàs a Sant Miquel s/n 17476 Palau de Sta. Eulalia (Girona) SpainTel. 972 568085 · Fax 972 568320 · www.nargesa.com · [email protected]