Capabilities
Our own mold design in thinking of Elastic Deformation Forging, so called "EDF" process can provide a hobbed symmetrical crowned shape on the tooth flank of helical gears.
This advanced EDF molds lead to the way of mass production of cold forged crowned helical gears in high precision.
By the control of contact pressure to the blank materials, it can be possible for the helical gears to be distributed the inner stress homogeneously capable to be the silent gears with minimized distortion after heat treatment.
A specific case hardening technology matching with the cold forged gears can improve the fatigue strength and the initial pitting resistance.
On "EDF" process in detail Conventional cold forging process obtaining a high gear class have been based on such that the forging pressure is propagated into the gear tooth only in axial direction . Today CREATECH is adopting such process that the forging pressure is controlled to propagate the inside of gear tooth in the possible stress lebel of the plastic working. At the same time the pressure differences fully used are propagated in radial direction into the gear. Thus we use the elasto-plasticity of steel effectively.
