3D inspection of train wheel sets for an automobile group-HOLON3D

3D inspection of train wheel sets for an automobile group

Release time：2024-04-08 Views：120

With the operation and development of high-speed rail for many years, a large amount of historical data related to the use of vehicles has been accumulated. It is necessary to mine the knowledge behind the data, obtain the rules of tread shape wear or dimensional parameter values and vehicle operation stability, and evaluate or predict vehicles and lines. The matching status of the wheel set guides the vehicle department to use it for maintenance work.

Facing problems

1.The moving wheel pairs are inspected using traditional calipers and gauges. Many dimensions and shape characteristics cannot be effectively inspected, which greatly affects the inspection efficiency and accuracy of the product.

Scanning scene of train wheel set

2. The customer needs to quickly scan the outer dimensions, inner distance of the wheel set, wheel diameter and other parts of the rolling wheel set for intensive point cloud collection requirements.

Scanning scene of train wheel set

Solution

During the inspection of moving wheel sets, due to their huge size and heavy weight, and the surface having various features and complex three-dimensional free-form surfaces, traditional calipers and gauges are used for inspection. Many size and shape features cannot be effectively inspected and are prone to secondary The error greatly affects the detection efficiency and detection accuracy of the product. In order to abandon traditional inspection methods, "CRRC Group" needs to use optical three-dimensional inspection equipment to conduct product inspection and secondary design of the produced train wheel sets. HOLON3D technical engineers proposed a solution: use the large-format 3D scanner α7000 to conduct three-dimensional inspection and analysis of the wheelset, and obtain a comprehensive analysis and inspection report, providing an effective solution for the "CRRC Group" train wheel set inspection.

Scanning device:

3D scanner α7000

Features:

1. Using carbon fiber military materials: high stability, strong thermal shock resistance, small thermal deformation coefficient, higher equipment scanning accuracy and stronger stability

2. 13-step coding calibration technology: eliminate lens errors

3. Extrapolation method multi-frequency phase shift: uniform stripe projection

4. Compatible with photogrammetry system: higher accuracy

5. Granite calibration source

6. Patented design: Eliminates the problem of multi-angle scanning and stitching problems

7. The cumulative scanning accuracy is extremely high, and a single machine can scan a workpiece of about 4m.

8. Multi-mode scanning, easy to adjust