The inner shock‑absorbing housing of the automobile lower fender is a core protective and shock‑absorbing component for the vehicle body chassis. Its curved‑surface precision, mounting‑position tolerances and structural integrity directly determine the adaptability of the shock‑absorbing system, driving stability and chassis protection performance. The customer needs to perform 3D scanning on this shock‑absorbing housing to obtain high‑precision and complete 3D data. By comparing the scanned data with the original model, a 3D inspection chromatogram is generated to intuitively quantify the error distribution of key areas such as the curvature of curved surfaces, mounting hole positions, and weld edges. On this basis, the qualification of the workpiece can be judged scientifically. Given the customer’s extremely high requirements for scanning precision and data completeness, as well as the need to adapt to diverse inspection scenarios such as workshop environments, traditional measurement methods cannot satisfy such requirements. For this reason, the HOLON3D Model 49 handheld full‑blue‑laser industrial 3D scanner with industrial metrology‑grade precision is selected to deliver efficient and reliable digital support for accurate quality inspection of the inner shock‑absorbing housing of the automobile lower fender.

Scan‑the‑site photo

The inner shock‑absorbing pocket on the lower fender of an automobile features an irregular curved‑surface structure. Inside it there are recessed areas, arc transition surfaces and densely‑arranged mounting snap positions. Traditional local point‑measuring tools (such as calipers and dial indicators) cannot fully cover the complex curved surfaces and hidden areas. Therefore, it is difficult to obtain full‑surface 3D data. As a result, the 3D inspection chromatogram lacks complete data support and cannot accurately reflect the overall error distribution. The surface of the shock‑absorbing pocket is smooth and prone to light reflection, so traditional measurement methods tend to cause distortion in the collected data for key features including curved contours and hole edges, which reduces the accuracy of error judgment. Strict precision requirements are imposed on indicators such as the curvature of its curved surface, the coaxiality of mounting holes, and the uniformity of wall thickness. Limited by the precision of traditional measuring tools, micro‑level tiny errors are hard to be captured, which readily leads to data deviations. Contact‑based measurement suffers from low efficiency; in the course of operation, applied force may cause slight deformation of the shock‑absorbing pocket or scratch its surface protective coating, further undermining the authenticity of inspection results. In addition, traditional measurement methods are heavily constrained by working scenarios. They cannot flexibly satisfy high‑efficiency inspection requirements under different circumstances, such as sampling inspection on workshop assembly lines and quality recheck in warehouses. This seriously restricts quality‑control efficiency and production progress.

Adopting the HOLON3D Model 49 handheld industrial‑grade 3D scanner with full‑blue laser can specifically solve the core challenges in the inspection of the shock absorber housing inside automotive lower fenders. Featuring industrial metrology‑level accuracy, this scanner delivers a measured accuracy of 0.02 mm with a maximum accuracy of 0.01 mm. Equipped with full‑blue laser technology, it precisely captures critical details including the curved profile of the shock absorber housing, dimensions of mounting holes, depths of snap grooves, and weld seam edges. It can even identify micron‑level errors and acquire high‑precision 3D data of the entire surface. This lays a solid foundation for generating accurate 3D inspection chromatograms and guarantees unbiased error quantification. Its flexible handheld design is not restricted by the irregular structures and hidden areas of the shock absorber housing. Users can freely adjust scanning angles to easily reach internal recessed sections, ensuring data completeness and enabling the chromatogram to fully display the overall error distribution. Its high‑speed scanning capability significantly shortens the data‑acquisition time for components with complex curved surfaces. Combined with non‑contact measurement, it prevents deformation and surface scratches caused by external forces while rapidly obtaining reliable data to efficiently support pass‑or‑fail judgements. The scanner boasts strong environmental adaptability and is free from site constraints. It can stably output high‑quality data in complex environments such as workshops and warehouses without elaborate preliminary preparations. The 3D data generated after scanning is accurate and complete. By comparison with the original model, a clear 3D inspection chromatogram can be produced to accurately quantify errors for pass‑or‑fail evaluation of the shock absorber housing. It fully satisfies the client’s strict requirements for high accuracy and data completeness, and provides reliable digital support for quality control and production‑process optimization of shock absorber housings inside automotive lower fenders.

Scan the data graph

Scan the data graph

3D Detection (Chromatogram)

3D Inspection (Dimension Measurement)