Centerless Grinding Vitrified CBN
| Part: |
Engine Sleeve. 5" skirt diameter, 5.5" flange diameter and 11" O.A.L. |
| Part Tolerances: |
Roundness ± 0.00025" tightest on flange diameter |
| Material: |
Cast Iron |
| Hardness: |
40 - 52 Rc |
| Stock Removal: |
0.010" on diameter |
| Wheel Specification: |
Wheel set (wheel 1 - 24" x 1" x 12") (wheel 2 - 24" x 8" x 12") Vitrified CBN (Maximizer) |
Conventional SiC Wheel
| Wheel Speed: |
5,000 S.F.P.M. |
| Work Speed: |
Regulating wheel rpm 100 |
| Pieces per dress: |
3 |
| InFeed per dress: |
0.0004" 1 pass |
| InFeed rate: |
0.012" per minute Dwell 22 sec. |
| Coolant: |
Synthetic |
| Total Cycle Time: |
36 seconds |
|
Vitrified CBN
| Wheel Speed: |
8,500 S.F.P.M. |
| Work Speed: |
Regulating wheel rpm 100 |
| Pieces per dress: |
900+ |
| InFeed per dress: |
0.0004" 1 pass |
| InFeed rate: |
0.019" per minute Dwell 12 sec. |
| Coolant: |
Synthetic |
| Total Cycle Time: |
20 seconds |
|
Savings / Advantages: Production increase of nearly 2 times. Conventional SiC wheel lasted 7 days and change over took hours. CBN wheel lasted 9 months.
