1. Flatness Error Detection: Use a laser level or coordinate measuring machine to check the flatness of the platform's working surface. If the error exceeds 0.1mm/m (≤0.08mm/m for heavy-duty platforms), it indicates that the platform may have deformed due to long-term load or environmental factors, requiring calibration or repair. For example, in the construction machinery industry, excessive flatness of heavy-duty platforms can lead to misalignment of welded parts.
2. Hole Spacing and Dimensional Tolerance Verification: Check the hole spacing deviation (standard ±0.03mm) and hole diameter tolerance (e.g., Φ28D10+0.065/+0.149mm) of positioning holes and T-slots. Excessive hole spacing deviation or hole diameter wear will affect the fixture positioning accuracy, requiring module replacement or hole system repair. In automotive battery tray welding, the hole spacing error must be controlled within ±0.06mm. 3. Support Structure Stability Assessment
Anchor Bolts and Foundation: Check for loose anchor bolts (embedded depth ≥150mm, verticality error ≤1°), and whether the concrete foundation has settled (strength ≥30MPa).
Support Blocks and Locking Pins: Confirm that the support blocks (e.g., QT600 material) are free of cracks, the locking pin tensile strength must be ≥20000N, and the surface hardness HRC28-32. Failure of the support structure will cause platform wobbling, affecting welding stability.
4. Cleanliness and Rust Prevention Inspection
Work Surface Cleaning: Use a lint-free cloth and neutral detergent to remove oil and welding slag to prevent contaminants from affecting positioning accuracy.
Rust Prevention Treatment: In humid environments, apply rust-preventive oil (e.g., grease) regularly. When not in use for extended periods, cover with moisture-proof paper to prevent rust. If rust spots or coating peeling are found, remove the rust immediately and reapply protective coating.
5. Maintenance Trigger Thresholds
Regular Calibration: Check flatness and hole spacing quarterly. If two consecutive checks exceed tolerances, a full maintenance is required.
Functional Malfunction: If the welding pass rate decreases (e.g., from 99% to 92% in the automotive industry), or the clamping force is insufficient, the platform status must be checked immediately.
