Gear cutting operations
Complex machining, perfectly controlled by Masson-Marine
The generation of straight or helical gears is one of the most complex types of machining. This is the operation that shapes the gear teeth on our drive pinions and gear wheels.
At Masson-Marine, we use 18NCD6 grade steel with 70/80 kg hardness.
Gear cutting usually follows the lathing operations.
Output rates are between 1 and 10 parts per day.
Cycle times may vary from 60 minutes, for an external helical gear (module 7, pressure angle 20°, 51 teeth), to 180 minutes for straight internal ring gears (module 3, pressure angle 20°, 95 teeth).
Two types of gear cutting are implemented at Masson-Marine's:
Gear hobbing
This kind of machining operation is carried out on gear hobbing mills:
- PFAUTER P1250, maximum diameter 1250 mm (modules 2.5 to 8)
- PFAUTER P 900, maximum diameter 900 mm (modules 2.5 to 8)
- PFAUTER P1250, maximum diameter 400 mm (modules 2.5 to 5)
We use monoblock carbide steel, TiN-coated hob cutters with straight or helical teeth.
Reciprocating gear shaping
Here, we can directly leave out teeth in straight gear teething.
We use the following gear shaping machines:
LORENTZ LS630, maximum diameter 630 mm, maximum stroke 200 mm; max. part height 350 mm (modules 0.5 to 8)
LORENTZ SNJ 5, maximum diameter 500 mm, maximum stroke 70 mm; max. part height 150 mm (modules 0.5 to 5)
