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Clinching tool delivers class D airtight ducting joints in less than 1.5 seconds

14 April 2011

A new fastening tool that enables class D airtight air duct flanges to be manufactured significantly faster, cleaner and more economically than traditional drill and fix methods has been developed by International fastening and assembly technology specialist Böllhoff. Called RIVCLINCH 0404 IP Aero the tool is TÜV NORD certified for class D and produces cold formed airtight joints in cycle times of between 0.9 to 1.5 sec.

The robust, pneumatically operated tool achieves low cost, high quality, joints in a single operation. No additional fastener components are required, there is no swarf and hence no waste. The RIVCLINCH tooling is designed to penetrate the top and bottom layers of each joint while leaving a middle layer in tact to prevent air leakage. The process delivers high strength, interlocking joints which do not vibrate or work loose over time. RIVCLINCH can be used to join steel and stainless steel sheet as well as aluminium and other non-ferrous materials.

The clinching tool is easy to use. Jaws are opened either manually or pneumatically and positioned along the profile. A trigger is pulled to deliver a clinching force of 35kN. Distances between fastening points are generally between 120 and 160mm. Weighing in at 4.7kg, the clinching tool requires 5 to 6bar air pressure supply.

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