Sheet Metal Punch And Die Clearance Formula

Slide thin sheets of material into the included die block then punch an inner and outer hole to create a shim or washer.

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. Min service life of dies. 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. This balances the punching force and optimizes part quality and tool life top.

Use it to calculate die clearance required for perforating metals plastics and more. Enter information about the stock you are punching in rows a b and c below. 20 25 long service life of dies. Let s make holes faster.

Punch and die clearance. Determine the punch and die clearance by experience. Each test result was recorded and a mathematical model was created. Unipunch custom metal fabrication c frame punching units will increase throughput reduce changeover time and enhance overall quality.

Material thickness x 15 example. Figure 5 when the tooling has the optimal amount of die clearance the shear cracks join. 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.

Generally there have two methods by experience and by formula. The percentage of the die clearance to the material thickness. Clearance is determined by the type and thickness of the material being punched. Enter information about your punch in row d.

Here s how to estimate die clearance required for punching steel and aluminium. When the die clearance is too tight the punch process creates secondary cracks which raises the punching force and shortens tool life bottom. For more information please read proper die clearance. 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.

30 heavy duty die clearance.