Three-dimensional test case of car headlamp housing 
Automobile headlamp housing is a large proportion of auto parts, and its quality can affect the appearance and performance of automobile. A well-known auto parts production company needs to obtain the 3d data of the car headlamp housing for the construction design and subsequent quality inspection of the products. 
Practical problems 
1. Customers are required to quickly obtain the 3d model of the car lamp housing. Due to the complex surface of the lamp housing, the concave and convex surface is more, which makes it difficult to scan the work. 
2, use the general measurement method (three coordinates, two dimensional, calipers, etc.), can only get the lamp shell a few data, surface part cannot be measured, to obtain the amount of data is incomplete, to car headlights secondary design and improvement. 
X3DS solutions
The traditional car headlamp housing is the same as the body design, complete the complete vehicle assembly three-dimensional model. Need to make car body stamping mould, lamp need moulds made by injection molding, different mould production after the completion of the test, the assembly, modify their mold, this process need car lamp holder and lamp, that is to say, there are two uncertain factors, increase the change cycle and production cost. 
Shape dynamic 3 d technology engineers used industrial 3 d scanner - HL 3 ds + fast scan for automobile headlamps shell, to obtain high density point cloud data, coupled with professional reverse design software, the point cloud data into a triangular mesh surface, and car headlamps shell for analog analysis, can quickly detect car headlamps shell errors and defects. Compared with the traditional methods of detection, shape moving 3d effectively solves the problem of enterprises and improves the production efficiency of enterprises. 

Car headlight object map

Spot scan of car headlights

Car headlights contrast detection data

Compare the test data with the original digital model