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Creating CAD from objects through reverse engineering.
Scanning and measuring products. From there, we create 3D CAD data and drawings. Please use our services for re-molding products with lost data or for digitizing improved machined products. We also accept modeling from drawings and STL files.
![[Example] High-Precision Reverse Engineering (Simple Shape Work)](https://image.mono.ipros.com/public/product/image/4f8/2000513756/IPROS43364548402808302345.jpeg?w=280&h=280)
We will introduce a method for reverse engineering simple-shaped workpieces with higher precision.
Commonly used methods for obtaining point cloud data for reverse engineering include 3D laser scanners and X-ray CT devices. However, regardless of how precise the equipment used is, an error of approximately ±0.05 to 0.1 mm occurs during data acquisition. Since the scan data is based on these initial errors, it can be said that achieving highly reproducible reverse engineering is nearly impossible. To improve reproducibility, there are methods to correct CAD drawings by incorporating actual measurements using calipers or micrometers, but there are limitations to the shapes and dimensional accuracy that can be measured with small tools. Our company has been providing measurement services using high-precision measuring instruments such as three-dimensional measuring machines and shape measuring machines for many years, enabling us to perform high-precision reverse engineering leveraging our advanced measurement technology. In this blog, we will introduce high-precision reverse engineering methods for simple-shaped workpieces.
![[Case Study] Comparison of Scanning Accuracy between 3D Laser Scanners and X-ray CT Devices](https://image.mono.ipros.com/public/product/image/ef7/2000513779/IPROS74824299017178898123.jpeg?w=280&h=280)
I will introduce a comparison of the scanning accuracy between 3D laser scanners and X-ray CT devices.
When performing reverse engineering, it is necessary to obtain point cloud data of the sample's shape, and the major methods for data acquisition are 3D laser scanning and X-ray CT scanning. Each method has its advantages and disadvantages, but which scanning method offers better accuracy (i.e., higher shape reproducibility)? In this case, we will verify the extent of error and distortion in the scan data from the 3D laser scanner and the X-ray CT scanner based on the dimensions measured by a three-dimensional measuring machine. The procedure is as follows: 【Step 1】 Obtain point cloud data of the sample's shape using a 3D laser scanner. 【Step 2】 Obtain point cloud data of the sample's shape using an X-ray CT scanner. 【Step 3】 Conduct dimensional measurements using a three-dimensional measuring machine. 【Step 4】 Extract dimensional data from the point cloud data in Steps 1 and 2, and compare it with the dimensional data from Step 3.
