The task in this project was to insert and press in two rivet nuts simultaneously in hinge reinforcements for engine hoods. The ergonomically height-adjustable system simultaneously feeds M8 nuts from a 4-lane sorting and conveying unit into correspondingly designed press-in heads and presses them simultaneously into left and right reinforcement plates.

This order for a Southern German automotive supplier involved pressing four rivet nuts into two hinge reinforcements for engine hoods and then attaching further components in the clamped condition.

A customized machine was required. BTM, a specialist in joining technology and special plant engineering, was approached. As a specification for BTM, it was particularly important to the customer that, despite the high pressing forces of max. 16,000 kN per rivet nut and the associated solid construction, a simple and user-friendly insertion operation for different insertion heights could be realized. The plant was equipped with two 30 ton BTM cylinders with 150mm stroke and pneumohydraulic drive.