Cylindrical Plunge Grinding / Traverse Grind
| Part: |
Transmission Shaft. 5 diameters and 2 faces. small diameter 1.67" x 0.9" wide. largest diameter 2.5" x 10+" wide. 5
plunges 2 faces and traverse grind. |
| Part Tolerances: |
Roundness ±0.0002" at 1.67 Cpk |
| Material: |
Hardened Steel |
| Hardness: |
58 - 62 Rc |
| Stock Removal: |
0.014" per diameter and 0.010" on faces |
| Wheel Specification: |
24" x 1.7" x 10" Wheel Type 1A1R Vitrified CBN |
Conventional Al2O3Wheel
| Wheel Speed: |
6,500 S.F.P.M. |
| Work Speed: |
65 |
| Pieces per dress: |
1 |
| InFeed per dress: |
0.0007 |
| InFeed rate: |
0.030" per minute (Rough) |
| Coolant: |
Water Soluble Oil |
| Total Cycle Time: |
7 minutes |
|
Vitrified CBN
| Wheel Speed: |
12,000 S.F.P.M. |
| Work Speed: |
100 |
| Pieces per dress: |
100 |
| InFeed per dress: |
0.00005 with 5 passes |
| InFeed rate: |
0.060" per minute rough |
| Coolant: |
Oil |
| Total Cycle Time: |
2 minutes |
|
Savings / Advantages: The old process using conventional wheels utilized two angle head machines - New process can use one machine and still produce twice as many parts as two conventional machines. Process has been running for 10+ years.
