Here is a recent success of an hDD dresser on an internal bore-grinding application with vitrified CBN. The customer was looking to improve cutting ability and longevity of the grinding wheel, as well as produce a more stable process. In this case, the original metal-bonded dressing tool was believed to be dulling the wheel too much, resulting in unsatisfactory results. The dresser was replaced with a hybrid-bond hDD dressing tool of the same design, and the improvement was rather dramatic.
Nova Setup: hDD Dressing Disk, Rocker Arm Assembly, Vitrified CBN Wheel
- Workpiece: Cam Roller (rocker arm)
- Grinding Tool: IG 9x13x5/M4, CB5-46-200-V-68350 (Vitrified CBN)
- Dressing Tool: DD 125x20x52, D42-426-175-H-304835 (hDD)
- Grinding Machine: Meccanica Nova
- Coolant: oil
- Workpiece Material: 100Cr6 (SAE-52100)
- Stock Removal: 0.2mm on radius
- Surface Finish Rz (micron): 1.38 after dress / 1.46 before dress
- Dressing Interval: 200 (80 before application of hDD)
- Workpieces / Grinding Tool: 36,000 (17,000 before application of hDD)
