Machines and machining processes

 

Circular saws are highly efficient basic machines used at the beginning of just about any component manufacturing process. The interaction between the saw tooth and the workpiece plays a key role. Not only is the tooth itself important but also the machine frame, drive, lubricating concept, chip collection and even the device used to clamp a workpiece in place.

The Department of Lightweight Construction Technologies at Fraunhofer IPA excels in analyzing, developing and optimizing the complete process chain and involves the relevant system partners. We develop and analyze the teeth of circular saws to assess wear behavior and thermal influences as well as solders and coatings and also select the best blade material for the job.

Our work focuses especially on chip formation, the design of blades and secondary cutting edges, chip spaces, noise development and quality. Besides simulation, we also implement analytical and testing techniques to investigate these characteristics and their impact on the cutting process. All elements related to the flow of forces have an effect on tooth engagement. We analyze and develop the rigidity and damping of components in the flow of forces to assess vibration behavior and process interaction. In doing so, we also consider the workpiece and how it is clamped, as well as specific geometric features, such as thin walls. In addition to the core process of cutting, we also develop safety devices for our customers to slow down high-speed saw blades or protect machine operators and products against fragments or recoil.

With our in-depth knowledge – from the saw tooth through extraction systems right up to safety– we offer our customers unparalleled process expertise. By taking a holistic approach and optimizing the overall situation, we not only improve aspects of a process but also consider their effects on other systems. Additionally, this serves to increase the global cost effectiveness of the separation process.