Why does the radial runout of the gear ring reveal only the geometric eccentricity of the gear?
Because the geometric eccentricity (mainly caused by fit clearance) has the greatest impact on the gear ring runout. And the error caused by motion eccentricity should be measured in tangent direction and revealed". For example, the common law line, the variable error, the tooth distance error, etc..
The workpiece or tool is not positioned properly and is no longer in the correct position.
The accuracy of the spindle rotation of the workpiece is low.3, the tool scene is larger, or the center of rotation of the tool axis and geometric center error is larger.
That's one of the main reasons:1, the material uniformity is poor.