Objective
- Substituting pre-grinding of the bearings with hard-turn milling
- Substituting finish-grinding of the bearings with hard-turn broaching and belt finishing
- Hard-burnishing of the turned axial surface for flange bearings
- Improved resource efficiency due to completely dry process
Approach
- Tool and process development of hard-turn milling, hard-turn broaching and hard-burnishing
- Development of tools and technology associated with belt finishing in order to achieve significant improvements in the straightness and roundness
- Development of a regulation concept to minimize deformations when hard-turn broaching based on determination of the bearing geometry
Development objectives
- Verification of the results on the crankshaft demonstration unit
- Evaluation of the tribological bearing properties in test-bench runs
- Determination of the savings potential
Benefits
- Significant reduction in primary processing times compared to grinding
- Reduction in energy consumption
- Completely dry process