Sheet Metal Punch And Die Clearance Formula

Material thickness x 15 example.

Sheet metal punch and die clearance formula.

Use it to calculate die clearance required for perforating metals plastics and more. 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. For more information please read proper die clearance. 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. For example when using ø12 upper die and ø 12 25 lower die the optimal clearance is 0 25mm. 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. Figure 5 when the tooling has the optimal amount of die clearance the shear cracks join.

Enter information about the stock you are punching in rows a b and c below. 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. Clearance is determined by the type and thickness of the material being punched. Here s how to estimate die clearance required for punching steel and aluminium.

Unipunch custom metal fabrication c frame punching units will increase throughput reduce changeover time and enhance overall quality. 20 25 long service life of dies. Let s make holes faster. Let s make holes faster.

Each test result was recorded and a mathematical model was created. Components will indicate the amount of clearance and whether the punch and die have optimum cutting clearance or excessive clearance or misalignment. Min service life of dies. Determine the punch and die clearance by experience.

30 heavy duty die clearance. Slide thin sheets of material into the included die block then punch an inner and outer hole to create a shim or washer. The percentage of the die clearance to the material thickness. The clearance between punch and dies is represented by the total difference which is one of the critical factors in the punching process.

Punch and die clearance.