High Precision Eccentric Axis

Material: 20CrNiMo (Alloy Steel)

Workpiece size: 55*307

Surface treatment: hardness HRC62 +2

Processing time: 7 hours

Processing equipment: four-axis processing center, CNC lathe and cylindrical grinder, etc.

Technological difficulties:

A. Transitional junction of two eccentric outer diameters.

B. Positioning of two axes with eccentricity of 10+0.05/-0.00 and parallelism of 0.05 axes.

C. The full jump of the circle on each common axis relative to the axis is 0.01, the maximum external diameter accuracy is h5, and the roughness is Ra0.4.

D. The deformation of carburizing heat treatment after roughing should be controlled within 0.02 jump.