Ear Phone, Stavax HRC52
BackEar Phone Model
Purpose: IDI hard milling ball nose finishing quality test
Material: Stavax, HRC52
Dimension: 30x30x50mm
Tool: HDB2005 ball nose end mill
Coolant: oil
| Process | roughing | semi-finishing | finishing |
| Tool | HDB2005 | HDB2005 | HDB2005 |
| Diameter(mm) | 2 | 2 | 2 |
| No. of flutes | 2 | 2 | 2 |
| Spindle speed(rpm) | 18000 | 18000 | 20000 |
| Feed rate(mm/min.) | 2000 | 2000 | 600 |
| ae(mm) | 0.2 | 0.08 | 0.02 |
| ap(mm) | 0.2 | 0.05 | 0.05 |
| Processing time | 00:06:44 | 00:02:31 | 00:24:00 |
Comment:
A HDB2005 hard milling ball nose tool was tested in this experiment. We used a high stiffness 5-axis machine with HSK63A 24000rpm spindle for cutting test and measured Ra and geometry deviation on CMM. The final Ra was 0.11um. 29 points on the model were measured after machining. 28 out of them were within 5um tolerance. The final finished surface was shiny with no obvious machined tool path. The sound during machining was quiet and smooth.