31
Jan
Case I
Processing of cylinder head valve seat
| Guide Reamer | φ4.97 / φ29.4 |
| Inserts | Nonstandard PCD reamer and CBN inserts |
| Vc
(guide valve) |
105m/min |
| Vc
(valve seat) |
124m/min |
| ap | 0.10 – 0.15mm |
| N | 5570 / 1360rpm |
| Fr
(guide valve) |
0.12mm/r |
| Fr
(valve seat) |
0.07mm/r |
| Fr
(valve seat finishing) |
0.05mm/r |
| F
(guide valve) |
668mm/min |
| F
(valve seat) |
95mm/min |
| F
(valve seat finishing) |
68mm/min |
| Tool life
(CBN inserts for valve seat) |
800 – 1000pcs |
| Tool life
(PCD reamer for guide valve) |
800 – 1000pcs |
| Finishing Reamer | φ5 / φ29.5 |
| Inserts | Nonstandard PCD reamer and CBN inserts |
| Vc
(guide valve) |
95m/min |
| Vc
(valve seat) |
120m/min |
| Fr
(guide valve) |
0.12mm/r |
| Fr
(valve seat) |
0.11mm/r |
| Tool life
(CBN inserts for valve seat) |
800 – 1000pcs |
| Tool life
(PCD reamer for guide valve) |
600 – 1000pcs |
