Sheet Metal Punch And Die Clearance Formula

T 1 3mm c 5 8 t.

Sheet metal punch and die clearance formula.

T 1mm c 4 5 t. 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. Determine the punch and die clearance by formula.

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. Clearance between punch and die. The clearance between punch and dies is represented by the total difference which is one of the critical factors in the punching process. T 3 5mm c 8 10 t.

Material thickness x 15 example. 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. Its value can be calculated according to the following punch and die clearance formula.

Regardless of material thickness the recommended penetration of the punch into a mate slugfree die is 0 118 3 00. This provided an acceptable burr height and slug control. Figure 5 when the tooling has the optimal amount of die clearance the shear cracks join. 48 44 mm thickness of top plate 1 5 td 36 33 mm.

When the die clearance is too tight the punch process creates secondary cracks which raises the punching force and shortens tool life bottom. Enter information about your punch in row d. Let s make holes faster. T 1 3mm c 6 8 t.

Use it to calculate die clearance required for perforating metals plastics and more. 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. 18 165 mm thickness of bottom plate 2 td. Enter information about the stock you are punching in rows a b and c below.

Here s how to estimate die clearance required for punching steel and aluminium. Material thickness t 1 mm blanking clearance c 3 4 t.