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News

Mar 18, 2015

9 Reasons to Use 3D Scanning


9 Reasons to choose our 3D scanning and Photogrammetry service for all your Inspection, Reverse Engineering and Design support needs.

 

1) Non-contact measuring prevents any chance of damaging or deforming the part.

 

2) The process is much quicker at capturing data around complex features. The scanner will place the same number of points (5million per scan) in the scanning volume no matter how complex or simple the region without any extra input or programming.

 

3) No gaps in data. The GOM ATOS scanner has the capability of effectively placing a point every 0.05mm. This allows for confident full form analysis and inspection. It would be practically impossible for a touch probe CMM to achieve this level of point capture in a similar time period. 

 

4) Not constrained to a fixed working volume. By building up and overlapping scans the process can effectively scan anything, any size. A touch probe CMM has a limited working range determined by the geometry of the arms and mechanisms that make up the machine.

 

5) No pre-programming required. CMM touch probes require time to develop a program list for each part to be measured.

 

6) No complex fixtures required.  Because we are not touching the part whilst scanning the object doesn’t need to be specially supported to restrict movement. A traditional CMM process will require a well-built fixture to hold the part to prevent it from moving or deforming as a result of each contact by the touch probe. These fixtures require careful design and planning followed by precise manufacture. NB. We may sometimes use a simple jig to support flexible or delicate parts however they do not have the same demand as a CMM jig; to support against touch probe contacts.

 

7) Wide operating temperature range whilst maintaining accuracy. The GOM scanner can operate from 5degC to 40degC. The system is calibrated before each job to ensure it is setup for that operating temperature. The GOM calibration software includes complex thermal expansion calculations that ensure the scanner is working correctly at the present temperature. A traditional CMM is required to operate within a very narrow temperature range which can limit the capabilities of the system.

 

8) Totally portable.  All our photogrammetry and scanning equipment is completely portable allowing us to carry out work at any location required. Typically traditional CMM’s are fixed in one location or require specialist transport.

 

9) GOM touch probe can be used to measure hard to reach features. We have a ruby tipped touch probe that the scanner recognizes based on a specific layout of markers on the probe itself. The software then knows exactly where the contact is being made on the part and therefore places a point in the digital model. This is useful for measuring features that the scanner alone can’t fully pick up, for example, the bottom of a narrow or deep cylinder.

 

To discuss any of the benefits further please contact us at enquiries@surfdev.co.uk or call 01621 744900

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