How to determine the precision of a 3D welding station?

I. Core Precision Indicators

Hole Precision: Standard hole spacing error should be ≤0.05mm (e.g., φ28 series hole spacing 100±0.05mm), verified using a plug gauge or coordinate measuring machine (CMM).

Flatness: The table surface deformation must be controlled within 0.02-0.05mm, which can be measured using a laser interferometer or a contour block + dial indicator.

II. Inspection Tools and Methods

Coordinate Measuring Machine: Performs 3D scanning of key holes on the platform and generates an error report.

Laser Interferometer: Detects table surface flatness and positioning accuracy, with a resolution of 0.001mm.

Repeatability Test: Multiple positioning of the same hole position should have a deviation ≤0.03mm.

III. Maintenance and Calibration
Regularly grind and repair worn surfaces; replace the table surface if severely deformed.

Stable ambient temperature is required to avoid thermal deformation affecting precision.