FSPR Robotic Riveting Gun For Automotive Roof & Door

Customer: Automotive Tier 1 Supplier

Industry Applications: Automotive Parts

Application Materials: Cast Aluminum Parts, Duplex Steels

Customer Situation: The customer's new roof assembly consists of a combination of shaped multi-layer material workpieces (Duplex - Cast Aluminum - Duplex), with structural adhesive coating between the layers of workpieces. The old process employed by the customer was SPR riveting, which was prone to lead to cracking of cast aluminum workpieces at the joints, the workpieces required pre-drilled holes, and it was difficult to align the holes in the multi-layer panels, which made the joining process costly, inefficient, and unable to achieve a reliable connection.

Heron Solution: To address the customer's issue, we employed an FSPR riveting gun, which enables efficient riveting of two or more layers of materials such as steel, aluminum, cast aluminum, high-strength steel, and aluminum alloy carbon fiber. We use a servo cylinder (8 tons) as an actuator, which is capable of outputting large tonnage riveting force as well as precise control of the riveting process. Additionally, we utilized a newly developed Riveting Monitor (HRC670) for real-time monitoring, to store force and displacement curves for back-checking.

Social Impact: Solve the industry's technical challenge with hot-stamped steel and die cast aluminum, i.e. materials that are difficult to weld. 

Environmental Impact: Realize the lightweightization of the automotive body and reduce the consumption of chemical energy in the process of automotive manufacturing.