Weld nut sensors

Turck has introduced magnetic-inductive sensors for efficient and economic detection of weld nuts. These sensors use signal attenuation to reliably detect ferromagnetic components such as nuts, bushings and spacer sleeves and ensure these necessary components are present before robotic welding occurs — with no additional software or electronics required. Turck’s weld nut sensors are easily integrated into existing production lines, replacing traditional location bolts and providing a solution for sheet metal processing in chassis construction.

These sensors deliver a cost-effective alternative to more expensive optical- or vision-based systems, which can often malfunction due to residue, such as dirt and weld-splatter, and frequently changing lighting conditions in welding zones. The weld nut sensor can be mechanically protected with a customer-supplied stainless steel sleeve, which also acts as a guide to keep the weld nut in place.

Weld nut sensors are easily programmed to differentiate between the nut and the sheet metal on which it is located by using a teach adapter or by simply shorting the leads.

Weld nut sensors are available in two versions offering different signal intensities and diameters to adapt to a wide variety of operating environments and material characteristics. The sensors also feature a rugged IP67 chrome-plated brass housing that protects internal components from harsh welding zone conditions. The sensors also offer temperature compensation to withstand the thermal changes common in welding environments.