How technology is changing the way modern cars are built

Changing a body panel from steel to aluminium can alter how it is joined. A different battery pack can demand new lifting equipment and mounting arrangements. Changes on the drawing board become changes on the factory floor.

Robots have long welded and painted cars. The challenge for automation in car manufacturing is adapting these established methods to a wider mix of materials, powertrains and models, while keeping assembly consistent.

From repeatable movement to sound assembly

In the body shop, where a car’s structure takes shape, robots weld panels and apply adhesives. Fixtures hold components in position, giving the machine a predictable arrangement to work with. Painting robots follow controlled paths to apply coatings.

Accuracy depends on the whole set-up. A robot might repeat its programmed movement precisely, yet perform the operation in the wrong place because a component is poorly positioned.

Fastening operations need verification too. Torque-measurement and tool-auditing equipment from suppliers such as Crane Electronics helps manufacturers assess assembly tools and tightening processes. Torque readings sit alongside checks on component seating and joint condition when assessing whether an assembly is sound.

Handling flexible wiring or fitting delicate trim in a confined space presents different challenges from welding firmly held panels. Equipment must suit the behaviour of the parts and the available access, as well as the movement required.

Lighter bodies change the joining process

Combining steel, aluminium and other materials is one way to reduce vehicle weight. For the factory, that choice affects how components are brought together and secured.

Engineers select joining methods according to the materials, their thicknesses and the structural requirements. Welding, mechanical fasteners and structural adhesives each have applications, sometimes within the same assembly.

An adhesive-dispensing system needs access to the joint and control over where material is deposited. Riveting requires tooling and component support suited to the connection. A change of panel material can therefore prompt changes to fixtures, tools and joining methods as well as the robot’s program.

The production sequence must accommodate how parts are held, which equipment can reach them and how the finished connection is checked.

Installing the battery pack

Electric vehicles bring a different set of assembly requirements from those associated with an engine and fuel system. Battery packs need handling equipment suited to their dimensions and mass, together with controlled alignment during installation.

Lifting and positioning systems carry the load and help align the pack for installation. The arrangement also needs to leave access for securing the pack and making connections.

Handling and electrical safety belong in the same production plan. High-voltage work requires suitable procedures and trained personnel alongside any automated equipment.

Different pack designs and mounting arrangements change the sequence of work. Preparing for a new electric model requires coordinated planning of lifting equipment, assembly space and installation methods.

Testing model changes virtually

Before equipment is installed or moved, engineers can simulate a proposed production arrangement. Virtual models help them examine robot reach, tool access and potential conflicts between moving equipment.

A robot might reach a fastening position while leaving too little room for its tool or nearby machinery. Finding that problem during planning gives engineers an opportunity to revise the layout before installation.

Simulation also helps explore changeovers between models. Different components can require alternative grippers, fixtures or programs, and these changes have to fit the production sequence. A flexible line needs provision for that variation in its physical equipment as well as its software.

Physical commissioning then confirms how the proposed arrangement works with real parts and machinery.

The work around the machines

Technicians maintain equipment, diagnose faults and check that tools and fixtures remain correctly set up. Engineers investigate problems and adjust processes when designs change. Automation shifts some of the work from carrying out an assembly task to keeping the system performing it correctly.

Operators need clear instructions and safe access for loading, inspection and intervention. Equipment designed for collaborative work still requires assessment of the complete application, including the tool, component and surrounding machinery.

As body materials, battery designs and model ranges change, factories must adapt their equipment and working methods together. Sound assembly planning and skilled maintenance turn programmed movements into a reliable production process.