Gear Hobbing Machines
High-precision Gear Hobbing Machines GE15FR Series
Company：NIDEC MACHINE TOOL CORPORATION
The high-precision gear hobbing machines GE15FR/GE15FR Plus meet customer requirements for high-precision and high-speed processing for applications such as reduction gears.
GE15FR
Max. workpiece diameter (mm)
φ150
Max. module
2.5
GE15FR Plus
Max. workpiece diameter (mm)
φ150
Max. module
1.25
Features
Adopts a direct drive for the hob spindle and the table to reduce pitch error by 80% compared to conventional models
[New Direct Drive Hobbing Head]
It achieves high-efficiency processing with a small-diameter hob cutter by increasing the speed of the spindle. And the excellent design enables high precision hobbing by reducing spindle vibration and heat generation caused in the high speed rotation due to the direct drive.
Direct-drive motor
High-speed bearing arrangement
HSK interface (Plus)
Bearing cooling
Unit balance
It achieves high-precision processing with the table design by which that we take into account the table rotation accuracy which affects workpiece accuracy.
Direct-drive motor
Low cogging torque motor (Plus)
High precision encoder
Non-contact seal
High-speed, high-precision processing example
High-speed processing with a cutting speed of 800 m/min using GE15FR Plus
Workpiece specifications
| Mn | 0.5mm |
|---|---|
| Number of gears | 100 |
| Helix angle | 0deg |
| Gear tip diameter | 約50mm |
| Gear width | 15mm |
| Material | SCM415 |
Cutter specifications
| Outer diameter | 32mm |
|---|---|
| Number of threads | 1 thread |
| Material | Carbide |
Achieves pitch accuracy equivalent to ISO 0 class
Cutting conditions
| Hob speed | 8000min-1 |
|---|---|
| HCutting speed | 804m/min |
| Ax feed | 0.5 mm/t.rev |
Cycle time
Specifications
| Item / Model | GE15FR | GE15FR Plus | |
|---|---|---|---|
| Max. workpiece diameter (mm) | φ150 | ||
| Max. module | 2.5 | 1.25 | |
| Axial travel (mm) | 250 | 250 | |
| Radial travel (mm) | 140 | 140 | |
| Hob | Max. diameter (mm) | φ100 | φ75 |
| Max. length (mm) | 150 | 150 | |
| Shift (mm) | 150 | 150 | |
| Rotation speed (min-1) | 6,000 Direct drive system | 8,000 Direct drive system | |
| Max. table rotation speed (min-1) | 2,000 Direct drive system | 1,000 Direct drive system | |
| Total electric power (kVA) | 35 | 37 | |
| Machine weight (kg) | 8,500 | 8,500 | |
