Sheet Metal Punch And Die Clearance Formula

T 1mm c 4 5 t.

Sheet metal punch and die clearance formula.

16 gauge and lighter 006 15 gauge thru 13 gauge 010 3 32 up to 5 32 1 64 3 16 up to 15 32 1 32 1 2 up to 23 32 1 16 3 4 up to 31 32 3 32 1 and over. When the die clearance is too tight the punch process creates secondary cracks which raises the punching force and shortens tool life bottom. A long time industry rule of thumb used by die makers for the clearance between the punch and the die button is 5 of the stock thickness per side. T 1 3mm c 5 8 t.

The clearance between punch and dies is represented by the total difference which is one of the critical factors in the punching process. 3 fs where fs shear force in tones td 2 422 cm td 24 22 mm thickness of punch holder plate 0 5 td. For more information please read proper die clearance. Each test result was recorded and a mathematical model was created.

This provided an acceptable burr height and slug control. Thickness of punch holder plate 12 11 mm thickness of stripper plate 0 75 td. This balances the punching force and optimizes part quality and tool life top. Die clearance is equal to the space between punch and pie when the punch enters the die opening.

48 44 mm thickness of top plate 1 5 td 36 33 mm. Determine the punch and die clearance by formula. Use it to calculate die clearance required for perforating metals plastics and more. Its value can be calculated according to the following punch and die clearance formula.

Material thickness t 1 mm blanking clearance c 3 4 t. Here s how to estimate die clearance required for punching steel and aluminium. Figure 5 when the tooling has the optimal amount of die clearance the shear cracks join. Let s make holes faster.

Enter information about your punch in row d. Clearance between punch and die. For example when using ø12 upper die and ø 12 25 lower die the optimal clearance is 0 25mm. 18 165 mm thickness of bottom plate 2 td.

Regardless of material thickness the recommended penetration of the punch into a mate slugfree die is 0 118 3 00. T 3 5mm c 8 10 t.