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Tooling selection: criteria

Selecting the tooling is the first step involved when studying a new clinching application.

It will determine the pressing force and the size of the clinching force unit and work head.  This choice will depend on:

  • Sheet metal thickness and material: each tooling has its own range of thickness per material type.
  • Accessibility and space allowed for the tooling: the thicker the material, the larger the tooling required.
  • Strength requirement: there is a direct relation between the size of the tooling and the joint strength. Priority can be given to obtaining either the highest strength, or minimizing the cost of equipment by selecting a smaller tooling.
  • Punch location: whenever possible, the punch should always be on thicker layer, which will provide a higher joint strength.
  • Number and variability of sheet layers: a rectangular tooling should be selected if a low ductility material is used or if more than 2 layers, unequal thicknesses or variable total thickness are involved in the same application.

 

Compatibility of tooling with the machine

The SPOT CLINCH® / RIVCLINCH ® work heads are designed to accommodate the various standard tooling.
A corresponding force unit with appropriate setting force exists for each die diameter. This makes it quite simple to select the clinching machine.
Irrespective of the die diameter or width, a suitable work head is available in the portable or in the modular range.

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Next step - Tooling selection: clinch area and thickness »

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