For ID boring operations｜ Swiss CNC lathes
Swiss CNC lathes ID boring operations
[ Cutting conditions ]
Material : Alloy steel・Stainless steel
vc = 80m/min f=0.05-0.1mm/rev ap=0.1-0.5mm
260 SFM .002 – .004 IPR .004 – .020 DOC
WET
F style chipbreakers direct chips backward and out of the hole
* Use a right-handed style insert with a right-handed boring bar
[ Cutting conditions ]
Material : SCM415
part diameter φ12 Machining depth 20mm vc = 80m/min
part diameter φ.472” 260 SFM Depth of Bore : .787”
WET(External coolant)
[ Tools used ]
Holder : Steel shank S10KSTUPR11D12-OH Insert :
TPGH110304 Type
TPGH221
*When using FG, F1, F05 chipbreakers – use a right-handed insert with a right-handed boring bar.
| Coated grade | Material | Operation type | Overhang amount | Cutting speed (m/min) Cutting speed (SFM) | Feed (mm/rev) Feed (IPR) | DOC (mm) DOC (inch) |
|---|---|---|---|---|---|---|
| ST4 | Stainless | ID boring operations ID boring Back turning | Steel shank ～5D Carbide shank ～7D | 40 – 120 130 – 400 | 0.02 – 0.2 .0008 – .005 | 0.1 – 1.0 .004 – .080 |
| QM3 | Alloy steel / carbon steel / hardened material | 50 – 150 150 – 500 | ||||
| DM4/DT4 | Difficult-to-cut material / titanium alloy / high temp alloys | 30 – 70 130 – 330 | ||||
| TM4/ZM3 | Non-ferrous / aluminum / plastic / general purpose | 50 – 200 150 – 600 |
[ Cutting conditions ]
Material : SCM435
vc = 80m/min f = 0.05mm/rev ap = 0.25㎜ part diameter : φ10 External coolant Toolholder overhang amount : L/D = 4 Machining depth : 20mm
270 SFM .002 IPR .010 DOC part diameter:φ.39” External coolant Toolholder overhang amount : L/D = 4 Machining depth : .79”
[ Tools used ]
Holder : S08H－STUPR09D10－OH type
(minimum bore diameter of φ10) Shank diameter : φ8
(minimum bore diameter of φ.39”) Shank diameter : φ.315”
Insert : TPGH090204 Type
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| Mogul bars ＋TM4 FGbreaker |
1,500 pcs
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| Competitor’s product |
700 pcs
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Competitor’s tool life was not stable due to chip packing.
NTK’s mogul bar and insert with FG chipbreaker evacuated the chip from the hole resulting in a 2.1 x increase in tool life.
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| Mogul bars ＋TM4 F1breaker |
900 pcs
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| Conventional tool |
500 pcs
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The competitor’s boring bar experienced a heavy amount of vibration due to extended overhang.
NTK’s boring bar eliminated vibration issues and insert with F1 chipbreaker achieved 1.8 x more tool life.
For more information about this product, visit our online e-catalog, or download the catalog/product report