Analysis of the influence of forming tool geometry on clinching joint for cylindrical surfaces

Clinching is a technique for joining metal sheets without the use of welds or screws. This method of joining uses only the energy of the joining process and no consumables to achieve local deformation of metal pieces. It is also a straightforward method for attaching metal sheets with thicknesses between about 0.5 and 3mm, and the maximum joint thickness is about 6mm. Clinching is often reserved for high-volume, low-demand applications like home appliances, HVAC parts, and automobile assemblies. This article describe clinching of cylindrical surfaces on prototype stand with different tools. Explanation of clinching and description of prototype stand for joining cylindrical surfaces. The differences od tooling is made by change of shape and size and analysis samples were made from aluminum 3003. The connection was studied by put into shear strength test and endurance test strength and check under the microscope thickness of the deformed walls.