Cavity-Loc® Clinching Joint Cross Section

The Cavity-Loc® joint is also the solution par excellence when a flat surface or only a low button height is required. The system is also characterised by its ability to join very thick sheets without requiring a lot of space. Any disruptive button contour can disappear flush into the second sheet metal partner.

Materials with low ductility, i.e. materials that are difficult to form, as well as materials with very different thicknesses, can be joined using the Cavity-Loc^® clinching tool. This includes spring steels, as well as brittle aluminium and copper alloys.

The BTM Cavity-Loc clinching tool can be used to join soft with very hard or non-ductile sheet metal. The hard sheet layer is pre-punched and centred to the clinching punch via a spring-loaded centring punch. The clinching punch then pushes the soft cover-side sheet through the punching and locks it into or under the second sheet. a flat joint or a button that only protrudes flat is the result.