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Two types of CBN wheel for inner grinding: ID Wheel with Shank, ID Wheel without Shank
With Shank
Without Shank
The Case of Vit internal grinding wheel for Oil pump nozzle
1. Needle body grinding
|
Workpiece |
Nozzle body |
|
Material |
18CrNi8(Low carbon alloy steel) |
|
Hardness |
HRC56-60 |
|
Grinding allowance |
Hole:0.02mm |
|
roughness |
Hole: Ra≤0.1μm |
|
Accuracy |
Hole: roundness ≤0.3μm, straightness ≤0.5 μm, parallelism ≤0.5 μm |
2. Grinding Parameter
|
Vitrified bond internal grinding wheel for Oil pump nozzle |
|
|
Specification |
4Dx6TxM2/4.1Dx10.5TxM2/3.8Dx6TxM2 |
|
Bond |
Vitrified |
|
Grit |
400/500 |
3. Grinding Effect
|
Item |
Parameter |
|
Speed-grinding wheel |
90000RPM |
|
Dressing interval |
16 piece |
|
Dressing allowance |
0.001mm(unilateral) |
|
Taper ≤±0.5μm
|
0.3μm |
|
Roundness ≤0.4μm
|
0.2μm |
|
Straightness ≤0.5,Roughness Ra ≤0.1
|
0.07-0.08 |
|
Life |
2500 piece |
Drawing & Specification:
| Model | Diameter (mm) | Bore Diameter (mm) | Height (mm) |
| 1A8 | 4 | 1.5 | 5 |
| 1A8 | 6 | 2 | 8 |
| 1A8 | 12 | 4 | 8 |
| 1A8 | 20 | 6 8 | 10 |
| 1A8 | 25 | 8 13 | 20 |
| 1A8 | 30 | 10 | 15 |
| 1A8 | 35 | 12 15 | 12 |
| 1A8 | 40 | 15 | 15 |
| 1A8 | 40 | 15 | 25 |
| 1A8 | 45 | 30 | 50 |
| 1A1W | 17.5 | 11 | 5.5 |
| * Other size can be made according to customers requirements. | |||