For thread forming｜ Swiss CNC lathes
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| Left hand Screw | Right hand Screw |
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| 3 inserts | 6 inserts | 9 inserts |
| Emphasis on cost | Balance | Emphasis on machining efficiency |
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| 1 corner type | 2 corner type |
| For prototyping and small-lot, high-mix production | For mass production |
| Workpiece diameters | Work materials |
|---|---|
| For cutter with ID of ⌀12mm ⌀.472inch | Pure titanium, titanium alloys, SUS316, etc. |
| ISO | No. of teeth | Work material | Bar stock (mm) (inch) |
Main spindle (min-1) |
Whirling cutter (min-1) |
Feed rate |
|---|---|---|---|---|---|---|
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Ti-6Al-4V EL SUS316 17-4PH Titanium Brass etc. |
3 | -⌀ 10 .400 | 5 – 12 | 1,500 – 4,000 | Same as thread lead = pitch |
| 6 | 10 – 25 | |||||
| 9 | 10 – 40 |
| Worm gear | ||
|---|---|---|
| Work material : | Brass | |
| Bar stock diameter : ⌀7 ⌀.276” | Major diameter : ⌀6 ⌀.236” | Minor diameter : ⌀4 ⌀.157” |
| Number of start : 2 | Helix angle : 10.1° | Hand of thread: left |
| Main spindle speed : | 30min -1 | |
| Whirling cutter speed : | 3,200min -1 | |
| Lead = Feed : | 2.8mm/rev .110 IPR | |
| NTK Thread Whirling 9 teeth |
25 seconds
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| Single point |
50 seconds
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By replacing the single point threading tools with a thread whirling system the machine time for threading operation is greatly reduced and the total cycle time for the part is cut by 50%.
| Pin | ||
|---|---|---|
| Work material : | Hastelloy | |
| Bar stock diameter : ⌀3 ⌀.118” | Major diameter : ⌀1.5 ⌀.059” | Minor diameter : ⌀1.1 ⌀.043” |
| Number of leads : 1 | Helix angle : 4.3° | Hand of thread: right |
| Main spindle speed : | 20min -1 | |
| Whirling cutter speed : | 2,250min -1 | |
| Lead = Feed : | 0.3mm/rev .012 IPR | |
| NTK Thread Whirling 9 teeth |
600 pcs / corner
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| Single point | 100 pcs / corner | |
By replacing the single point threading tools the threading system significantly improved tool life machining the difficult to cut Hastelloy material.
| Bone screw | ||
|---|---|---|
| Work material : | SUS316 | |
| Bar stock diameter : ⌀8 ⌀.314” | Major diameter : ⌀3.45 ⌀.135” | Minor diameter : ⌀2.67 ⌀.105” |
| Number of leads : 2 | Helix angle : 7.5° | Hand of thread: right |
| Main spindle speed : | 23min -1 | |
| Whirling cutter speed : | 2,000min -1 | |
| Lead = Feed : | 1.24mm/rev .048 IPR | |
| NTK Thread Whirling 9 teeth |
2,600 pcs / corner
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| Competitor’s Thread Whirling 6 teeth |
1,000 pcs / corner
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NTK thread whirling inserts achieved 2.6 x longer tool life compared to the competitor’s thread whirling inserts.
| Bone screw | ||
|---|---|---|
| Work material : | SUS316 | |
| Bar stock diameter : ⌀6.35 ⌀.250” | Major diameter : ⌀3.23 ⌀.127” | Minor diameter : ⌀2.2 ⌀.086” |
| Number of leads : 1 | Helix angle : 8.5° | Hand of thread: right |
| Main spindle speed : | 15min -1 | |
| Whirling cutter speed : | 2,250min -1 | |
| Lead = Feed : | 1.27mm/rev .005 IPR | |
| NTK Thread Whirling 9 teeth |
1,200 pcs / corner
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| Competitor’s Thread Whirling 12 teeth |
1,000 pcs / corner
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| Competitor’s Thread Whirling 3 teeth |
400 pcs / corner | |
NTK whirling inserts achieved 1.2 to 3 times longer tool life compared to the competition.
For more information about this product, visit our online e-catalog, or download the catalog/product report
