Roll Hemming Based Innovative Assembly System for Automotive Products

This work reports an investigation on an innovative assembly system for the components of a coolant pump designed for automotive industry. After having identified the main parameters involved in the process, the authors develop a numerical model aimed to investigate the main characteristics of the process which has been subsequently validated experimentally. To do this a simple mock-up of the pump was built that was employed for roll hemming tests and then to the main proof tests to assess the functionality of the assembled product. Experimental tests were conducted on some specimens in order to check the quality of the assembly between parts. The specimens passed the leak test as well as the torque proof as required by the design specifics which prove the validity and feasibility of this type of process.