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 |
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