I. Basic Inspection Tool Preparation
1. Laser Tracker
Used to measure repeatability (recommended resolution ≤ 0.01mm).
Requires use with a target ball and calibration software.
2. Coordinate Measuring Machine (CMM)
Suitable for checking hole system positioning accuracy (e.g., a Φ28D10 array with a hole pitch of 100 ± 0.05mm).
3. Electronic Level
Checking table surface flatness (standard requirement ≤ 0.10/1000mm).
II. Key Inspection Steps
1. Flatness Check
Arrange measurement points along the diagonal of the table, measuring every 1000mm. The maximum deviation must be ≤ 0.15mm/m².
2. Hole System Positioning Accuracy Verification
Use standard dowel pins (grade H7) to insert into adjacent holes and measure the center-to-center distance (100 ± 0.05mm). Repeat 10 sets of measurements and calculate the standard deviation (should be <0.03mm).
3. Perpendicularity Verification
Use a square and feeler gauge to measure the perpendicularity of the table top and side surfaces (standard ≤ 0.10/200mm).
III. Dynamic Accuracy Test
1. Robot Repeatable Positioning Verification
Set a mark at the end of the welding path and repeat the run five times, measuring the offset (tolerance ±0.1mm).
2. Module Assembly Stability Test
Apply a 2T load and measure the inter-module displacement (should be <0.05mm).
