Turntable Resistance Welders and Turntable Automation

A turntable resistance welder is an automated or semi-automated resistance welding machine that uses a rotating indexing table to move parts through multiple workstations. The operator or automation loads components into fixtures on the turntable, and the table indexes the parts into position for spot welding, projection welding, loading/unloading, inspection, or other operations.

Turntable welders are commonly used for high-volume production because loading and unloading can take place while another part is being welded. This reduces cycle time and improves production efficiency.

Typical advantages include:

• Higher production rates through simultaneous loading and welding
• Consistent weld positioning using dedicated fixtures
• Repeatable weld quality with controlled weld force, current, and time
• Multiple welds or operations within one automated system
• Reduced operator handling compared with manually positioning every part
• Integration with AC, MFDC, three-phase DC, or capacitor-discharge resistance welding power supplies, depending on the application

Turntable welding systems are automated or semi-automated welding machines that use a rotating indexing table to move parts through multiple welding and production stations. They are commonly used for high-volume manufacturing where repeatability, production speed, and consistent weld quality are important.

A typical system works like this:

• Load the part – An operator or robot places one or more components into a fixture mounted on the turntable.
• Index the table – The turntable rotates to move the loaded fixture into the welding station while another fixture moves into the loading position.
• Position and clamp – Tooling accurately locates and holds the components so each weld is made in the correct location.
• Perform the weld – The system automatically completes the programmed weld sequence. Depending on the application, a turntable system can incorporate resistance spot welding, projection welding, MIG welding, or other joining processes.
• Index to the next station – The table rotates again. Additional stations can be used for multiple weld operations, inspection, part marking, cooling, or other processes.
• Unload the finished part – The completed assembly returns to an unloading station where it is removed manually or robotically

Turntable resistance welders are used for high-volume, repeatable resistance welding of parts that require multiple welds or multiple operations. Parts are loaded into fixtures on a rotating indexing table, which moves them through one or more welding stations.

Common uses for turntable resistance welders:

• Automotive components — brackets, seat components, structural parts, clips, fasteners, and assemblies.
• Stamped metal assemblies — joining multiple stamped components with consistent spot or projection welds.
• Nuts, studs, and fasteners — projection welding weld nuts, studs, or other fasteners onto sheet-metal parts.
• Electrical components — terminals, contacts, connectors, and conductive assemblies.
• Appliance and HVAC components — brackets, housings, frames, and sheet-metal assemblies.
• Multi-weld parts — components requiring several welds at different locations or orientations.
• Automated production cells — applications where loading, welding, inspection, unloading, or other operations need to occur simultaneously.

Yes. A turntable resistance welder can be designed to automatically feed nuts, studs, or other projection-welding fasteners into the welding station.

In a fully automated system, a vibratory bowl feeder, hopper, or other parts-feeding system can orient and deliver the nuts or studs to a pick-and-place or loading mechanism. The turntable indexes the workpiece through stations that can include:

• Part loading – operator or robot loads the base component.
• Automatic nut/stud feeding – feeder delivers and positions the fastener.
• Presence/orientation verification – sensors confirm the fastener is correctly positioned.
• Projection welding – the resistance welding head welds the nut or stud to the component.
• Weld monitoring/inspection – controls can verify weld parameters or part presence.
• Unload – finished assemblies can be manually or automatically removed.

This is particularly useful for high-volume projection welding of weld nuts and weld studs, because the rotary indexing table allows loading, feeding, welding, and unloading to occur at separate stations, reducing cycle time.

Yes. Weld Systems Integrators designs and manufactures custom turntable resistance welding systems for high-production and multi-position welding applications. Each system can be engineered around your specific parts, weld requirements, production rate, tooling, automation level, part feeding, sensing, inspection, and unloading requirements. WSI can provide semi-automated or fully automated turnkey turntable welding systems designed and built in the USA.