| Work piece | Hob cutter |
| Material | High speed steel with titanium aluminum nitride coating |
| Hardness | HRC64-68 |
| Allowance | 0.2-0.3mm |
| Roughness | Ra≤0.2μm |
| Accuracy | The straightness of single tooth top to tooth root is 0.005mm, the straightness of the whole hob is 0.01mm from left to right, and the teeth in the circular direction are equally divided into 0.1mm |
| Other | Grinding surface grain consistent, no burn vibration marks |
| Grinding wheel | Grinding wheel for dressing Hob cutter |
| Specification | 4C9 150Dx15Tx3.5Wx50H |
| Bond | Vitrified bond CBN wheels |
| Machine | LUREN-LHS-3040 |
| Spindle speed | Spindle speed |
| Grinding allowance | 0.2-0.3mm |
| Dressing | WA oil stone 220# |
| Dressing frequency | 1-2 piece/times |
| Feed speed | 600-1000mm/min |
| Dressing time | 25-30 min |
| Item | MORE | Top brands in Japan | Note |
| Specification | 4C9 150Dx15Tx3.5Wx50H Vitrified bond wheels |
4C9 150Dx15Tx3.5Wx50H Resin bond wheels |
|
| Linear speed | 54m/s | 54m/s | same |
| Processing time | 25min | 25min | same |
| Dressing time | Manual | Manual | same |
| Dressing frequency | 1-2 piece/dressing | 1 piece/dressing | |
| Dressing amount | Manual | Manual | same |
| Roughness Ra≤0.2 | 0.08-0.1μm | 0.1-0.12μm | MORE with better roughness |
| straightness | 0.005mm | 0.005mm | same |
| Life | 100 hob cutter | 70 hob cutter | MORE with longer life |
