Gear shaper cutters
Gear Shaper Cutters
Company：NIDEC MACHINE TOOL CORPORATION
SuperDry shaper cutter
Features
- High precision finishing enabling shaving-free processing
- Increase of efficiency and productivity
- Extended tool life by two to five times compared with conventional wet cutting coated with TiN can achieve cost reduction.
- Gear shaping without cutting oil improving working environment
The processing sample shows the longer cutting tool life.
| Work | m3, PA 14.5°, 30T, supr gear |
| O.D. 94mm, Width 28mm, SCM420H(HB180) | |
| Cutter | 51T, O.D. 157.5mm, MACS |
| SuperDry with cutting face coating | |
| Cutting condition | Number of stroke 450/900/700str/min |
| Circumferential feed | 2.7/2.7/0.76mm/str |
| Radial feed | 0.01/0.01/0.01mm/str |
Samples
| Work | m2, PA 20°, 38T, supr gear |
| O.D. 81mm, Width 16.5mm, SCr420H(HB180) | |
| Cutter | 66T Φ137.068 |
| 66T, O.D. 137.068mm, MACS + SuperDry with cutting face coating | |
| Cutting condition | Number of strokes 700/1200/1200str/min |
| Circumferential feed | 2.51/1.26/1.26mm/str |
| Radial feed | 0.01/0.015/0.015mm/str |
The status of cutting face after cutting 4000 workpieces
Tooth profile chart (after processing 4000 pieces)
x500 x4 (JIS N6 equivalent)
Lead chart (after processing 4000 pieces)
x500 x4 (JIS N4 equivalent)
The shaper cutters with SS treatment can reduce tears of gears.
SS treatment stands for the special treatment for reducing the roughness on the cutting tool surface.
Example of processing
| Work | m2 PA20° NT29 HA35°LH |
| O.D. 79mm T.W.25, SCM420H | |
| Cutter | NT 64, O.D. 160mm, MAC B+ Dyanamic without cutting face coating |
Processing by Shaper cutters
Attach the shaper cutter to the gear shaping machine and perform gear cutting in vertical direction from the upper to the down section and back to the upper section (non-cutting) in reciprocal motion.
As cutting cannot be performed at the returning motion, cutting is not as efficient as hobbing with continuous processing.
While helical guide is required at helical gear processing which involves torsional motion, our lineup features the Flexible Guide Type Gear Shaping Machine (ST series).
Gear shaping
Cutter and helical guide lead
Relationship between cutting face roughness and tool life
Cut level irregularity
Cause of profile error
Conventional method of procession and high circumferential feed
Swelling of profile in pinion gears
