A well-known auto parts manufacturing company hopes to obtain 3D data of bumper molds to establish 3D digital model files (CAD drawings) of bumper molds to provide data support for the structural design, modification design and subsequent quality inspection of automobile bumper molds.

Practical problems

1. The automobile bumper mold is large, and the products produced are prone to deformation. Therefore, the quality control of the bumper mold is extremely important, and the three-dimensional data of the bumper mold has very high accuracy requirements.
2. It is very cumbersome and time-consuming to simply use traditional inspection methods (such as inspection tools, jigs, three coordinates, etc.), and it is not easy to accurately and quickly measure and inspect the structure of automobile bumper molds.

Holon solutions

Car bumper mould

In response to the problems faced by customers, Hualang 3D technical engineers use the 3D scanner HL-3DS (quickly scan the car bumper mold to obtain high-density point cloud data) + combined with professional reverse design software (such as Imageware, Geomagic) Studio) + 3D inspection software (to assist the company in the comparison of the finished product and the digital model of the product)

Scanning scene of automobile bumper mold

1. Preliminary preparations
Spray developer: improve the contrast of the background color on the surface of the sample and obtain better scan data.
Paste the mark points: enable the acquired data to be positioned and spliced in the scanning software.
2. Three-dimensional scanning
The scanning speed of the 3D scanner (HL-3DS) is fast, and it only takes 10 minutes to obtain the 3D data of the car bumper mold, and the data accuracy is as high as 0.02mm. The three-dimensional scanner (HL-3DS) adopts extrapolation multi-frequency phase-shift grating technology, code point calibration technology and automatic splicing technology. Import the 3D data of automobile bumper mold into 3D reverse software (Geomagic) for processing.

Car bumper point cloud data

Car bumper STL data

3. Three-dimensional inspection
Import the acquired car bumper mold 3D data into the inspection software Geomagic Qualify, which can quickly detect the difference between the car bumper mold (CAD) model and the manufactured parts of the product, and Geomagic Qualify can display the results with intuitive and easy-to-understand graphical comparisons. The difference between the two.

Car bumper comparison test

Annotated drawing of cross-section of car bumper

Car bumper error analysis table