Description of 2 major factors affecting the accuracy of gear transmission movement

The 2 major factors affecting the accuracy of gear transmission movement are explained as follows, for reference and understanding, if you are unclear or related to processing requirements, you can consult EP for free.

1. Movement eccentricity caused by gear processing

The axis O2O2 of the indexing worm wheel of the machine tool does not coincide with the axis OO of the machine tool spindle, forming a movement eccentricity (e2).

At this time, although the worm rotates at a uniform speed and the linear velocity of the meshing node between the worm and the worm wheel is the same, the radius on the worm wheel is constantly changing, which causes the worm wheel and gear blank to rotate unevenly. The angular velocity is between (ω+△ω) and (ω-△ ω), the cycle changes with one revolution.

Movement eccentricity produces tangential error, which results in tooth pitch deviation.

2. Geometric eccentricity caused by gear processing

forgearThe installation eccentricity on the machine tool refers to the eccentricity caused by the gap between the tooth germ positioning hole and the spindle and other factors, so that the axis o101 of the tooth germ positioning hole does not coincide with the rotation axis oo of the machine tool table (e1 ).

The geometric eccentricity causes the position of the tooth surface to change in the radial direction relative to the reference center of the gear. The machined gear has long teeth on one side and short teeth on the other, causing the gear to generate radial runout within one revolution.

Factors that affect the accuracy of gear transmission movement are also influencingCylindrical gearOne of the factors of product accuracy, for more related instructions, you can ask our technology for help.