Sheet Metal Punch And Die Clearance Formula

Here s how to estimate die clearance required for punching steel and aluminium.

Sheet metal punch and die clearance formula.

Clearance is determined by the type and thickness of the material being punched. 20 25 long service life of dies. Determine the punch and die clearance by experience. Figure 5 when the tooling has the optimal amount of die clearance the shear cracks join.

Clearance is the amount of extra space required in the hole of the die to allow the punch to pass through to punch a hole in the material. Punch and die clearance. This balances the punching force and optimizes part quality and tool life top. Components will indicate the amount of clearance and whether the punch and die have optimum cutting clearance or excessive clearance or misalignment.

Slide thin sheets of material into the included die block then punch an inner and outer hole to create a shim or washer. When the die clearance is too tight the punch process creates secondary cracks which raises the punching force and shortens tool life bottom. Hydraulic hole punches our strongest punch this tool has 35 tons of force to punch through tough materials such as bus bars railings and i beams. Let s make holes faster.

For example when using ø12 upper die and ø 12 25 lower die the optimal clearance is 0 25mm. Min service life of dies. The percentage of the die clearance to the material thickness. Generally there have two methods by experience and by formula.

Use it to calculate die clearance required for perforating metals plastics and more. Let s make holes faster. Enter information about the stock you are punching in rows a b and c below. Determine what size die you need for your punching application.

For more information please read proper die clearance. Each test result was recorded and a mathematical model was created. 30 heavy duty die clearance. Unipunch custom metal fabrication c frame punching units will increase throughput reduce changeover time and enhance overall quality.

Cutting die clearances 2 1 clearance equation the ideal clearance can be calculated using the following formula 10 tmax where c 0 005 accurate components 1698.