Sheet Metal Punch And Die Clearance Formula

The percentage of the die clearance to the material thickness.

Sheet metal punch and die clearance formula. When the die clearance is too tight the punch process creates secondary cracks which raises the punching force and shortens tool life bottom. Slide thin sheets of material into the included die block then punch an inner and outer hole to create a shim or washer. Components will indicate the amount of clearance and whether the punch and die have optimum cutting clearance or excessive clearance or misalignment. Let s make holes faster.

Enter information about the stock you are punching in rows a b and c below. 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. Min service life of dies. Each test result was recorded and a mathematical model was created.

Material thickness x 15 example. Determine what size die you need for your punching application. Figure 5 when the tooling has the optimal amount of die clearance the shear cracks join. Let s make holes faster.

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. Clearance is determined by the type and thickness of the material being punched. Use it to calculate die clearance required for perforating metals plastics and more. Unipunch custom metal fabrication c frame punching units will increase throughput reduce changeover time and enhance overall quality.

Generally there have two methods by experience and by formula. For more information please read proper die clearance. Punch and die clearance. Enter information about your punch in row d.

Here s how to estimate die clearance required for punching steel and aluminium. 30 heavy duty die clearance. 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. The clearance between punch and dies is represented by the total difference which is one of the critical factors in the punching process.

Determine the punch and die clearance by experience.