Test Dynamic Repeatability

This section introduces how to test dynamic repeatability.

Dynamic repeatability testing

In dynamic repeatability testing, the process is similar to semi-dynamic repeatability testing, except that the part is re-clamped at the beginning of each measurement round. After the part is clamped and secured, the robot, equipped with a camera, moves sequentially to the measurement positions of each feature on the part and takes photos. For example, if a part has 5 features, the dynamic repeatability test is performed as follows:

Secure the part: Secure the part using a fixture.
First round of photo capture: The robot, equipped with the camera, takes photos of all the features on the part in sequence (Feature 1 → Feature 2 → Feature 3 → Feature 4 → Feature 5).
Re-clamp the part: Re-clamp the part.
Repeat the process: Repeat steps 2-3 for the remaining 19 rounds of photo captures. The dynamic repeatability test for the current part is then complete.

Factors Affecting Dynamic Repeatability

Factors affecting dynamic repeatability:

Compared with semi-dynamic testing, dynamic testing only adds the step of repeated clamping with the fixture. Therefore, the factors affecting dynamic repeatability are as follows:

Repeated clamping accuracy of the fixture.
Degree of part deformation during each clamping.

Troubleshooting:

When a large difference appears between dynamic and semi-dynamic accuracy during on-site implementation, check the fixture’s repeated clamping accuracy and the part’s deformation during each clamping.