Sheet Metal Punch And Die Clearance Formula

This provided an acceptable burr height and slug control.

Sheet metal punch and die clearance formula.

The clearance between punch and dies is represented by the total difference which is one of the critical factors in the punching process. 48 44 mm thickness of top plate 1 5 td 36 33 mm. Its value can be calculated according to the following punch and die clearance formula. Each test result was recorded and a mathematical model was created.

T 1 3mm c 5 8 t. 18 165 mm thickness of bottom plate 2 td. Determine the punch and die clearance by formula. Use it to calculate die clearance required for perforating metals plastics and more.

Enter information about your punch in row d. When the die clearance is too tight the punch process creates secondary cracks which raises the punching force and shortens tool life bottom. 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. This balances the punching force and optimizes part quality and tool life top.

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. T 1 3mm c 6 8 t. T 3 5mm c 8 10 t.

Regardless of material thickness the recommended penetration of the punch into a mate slugfree die is 0 118 3 00. For more information please read proper die clearance. For example when using ø12 upper die and ø 12 25 lower die the optimal clearance is 0 25mm. Die clearance is equal to the space between punch and pie when the punch enters the die opening.

Material thickness t 1 mm blanking clearance c 3 4 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. T 1mm c 4 5 t. Let s make holes faster.

Thickness of punch holder plate 12 11 mm thickness of stripper plate 0 75 td. Material thickness x 15 example.