On-site Analysis and Optimization of Spot Welding and Joining Processes

Joining processes such as spot welding, clinching or riveting can now be analyzed on the spot with the welding & fastening monitor (WFM) Type 5825A2 from Kistler. In combination with the welding force calibration sensor Type 9831C… this handy and batterypowered device forms an effective mobile measuring system for analysis and optimization of welding and joining processes.

The force curves are recorded and post-cycle evaluation performed directly on the production machine. The monitor's outstanding versatility is evident from its three modes: welding, fastening and voltmeter.

For welding the monitor plots electrode force against time. In combination with the welding current switching signal, the relevant process variables are determined for each welding cycle. These variables then allow analysis and optimization of the welding process. In the fastening mode, a welding force calibration transmitter with suitable inserts can also measure the curve exhibited by a clinching or riveting force. As a voltmeter the monitor measures digital voltages with an input measuring range of ±5 V. Thus it displays the output voltage of a connected calibration transmitter.

The welding & fastening monitor is suitable for:

• Mobile control measurements on welding robots, clinching and riveting machines
• Setting up welding and joining machines for new workpieces
• Calibrating joining machines and spot welding guns
• Optimizing welding cycles and joining cycle times

Kistler Group

Kistler’s core competence is the development, production and use of sensors for measuring pressure, force, torque and acceleration. Kistler’s know-how and electronic systems can be used to prepare measuring signals for use in analyzing physical processes, controlling and optimizing industrial processes, improving product quality in manufacturing and improving performance in sports and rehabilitation.

Kistler offers a comprehensive range of sensors and systems for engine development, automotive engineering, plastics and metal processing, installation technology and biomechanics.

A worldwide sales presence in the form of 19 group companies and 30 distributors ensures customer proximity, application support on an individual level and short lead times.

With a staff of more than 800, the Kistler Group is one of the world’s leading providers of dynamic measuring instrumentation. The Kistler Group achieved turnover of 160 million Swiss Francs in the 2005 financial year.