Correction Principle and Points for Attention of Contact Zone of Klingenberg Helical Gear

In order to correct the contact area of Klingenberg helical gears during machining, a double-layer cutter head is required. The eccentric installation of the two cutter heads results in the arrangement of the milling blades in the cutter head on different pitch radii, which makes the convex tooth surface in the bevel gear teeth after cutting higher curvature than its concave tooth surface.Also create a drum on the convex tooth surface.

A drum shape is formed on the surface of helical gear teeth. When two gears engage, a contact area is generated on the meshing tooth surface. The size of the contact area is controlled by the drum shape, i.e. by the eccentricity of the cutter head.The amount of drum increment required for the tooth surface is influenced by many factors, such as the modulus m of bevel gears, tooth width B, angle of helix, etc.

After the trial-cutting of the Klingenberg helical gear teeth, if the test results show that the parameters of the contact area do not match the expectations, the Klingenberg helical gear can be further machined in accordance with the above method in order to correct the contact area of the Klingenberg helical gear teeth.For the middle of the teeth, the indentation of concave and convex surfaces on the surface of bevel gear teeth is completely separated from the top and the root of the teeth. When the contact area is in this distribution, the external force acting on the teeth under load will cause the contact area to extend along the length and height of the teeth.

When correcting the contact area of the Klingenberg helical gear teeth, it is necessary to ensure that the machining accuracy of the machine tool is reliable, and the parameters to be corrected need to be determined in detail and accurately to ensure the accuracy of bevel gear correction.