Fraunhofer Institute for Machine Tools and Forming Technology IWUObjective
- Adaptation to a change of the machining process as a result of modified material properties when switching the production of connecting-rod bearings for combustion engines to lead-free bronze
- Development of solution concepts for problems relating to chip breaking and meeting the required quality parameters due to the omission of lead
Approach
- Process influencing by means of high-pressure fluid jet (up to 270 bar)
- Introducing the high-pressure jet between the chip and the cutting face of the tool
Development objectives
- Improved machinability
- Optimal chip breaking
- Increased process reliability
- Reduced process heat
Benefits
- Reliable machining of lead-free bronze
- Reduction of the chip length by up to 90%, and associated improvement of manageability
