Nissei Corporation


Introduction of equipment and proprietary technologies

Hard finish machining

CBN gear grinding machine of bevel gears

1. Process and gear precision

Past manufacturing method (gear lapping)
Variation diagram of the past process, tool for machining, and gear precision
New manufacturing method (direct CBN gear grinding machine finish = hard finish) (module 1.1 or lower)
Variation diagram of the process, tool for machining, and gear precision of the new manufacturing method (direct CBN gear grinding machine finish = hard finish) (module 1.1 or lower)
New manufacturing method (CBN gear grinding machine finish) (module 1.1 or 6)
Figures of Process, Machining tools, and Changes of gear accuracy for New production method (CBN grinder finishing) (Module 1.1 to 6)

2. Equipment

Proprietary CBN gear grinding machine of bevel gears
Photo of the proprietary CBN gear grinding machine of bevel gears

Direct gear cutting of a cylindrical gears

1. Process and gear precision

Past manufacturing method (gear cutting)
Past process chart
New manufacturing method (direct gear cutting finish = hard finish) (module 1.25 or lower)
Process chart of the new manufacturing method (direct gear cutting finish = hard finish) (module 1.25 or lower)
Gear precision
Comparative diagram of the tooth profile and tooth trace

2. Equipment

1) Gear cutting machine (hobbing machine)

Photo of the gear cutting machine (hobbing machine)