3D Laser Scanning 3D CAD files with accuracy of 5 microns

3D Laser Scanning

Our state of the art Nikon 3D Laser Scanning head is capable of scanning with an accuracy up to 1.9 microns (2σ). That means our laser is not only effective for products but also tooling die cavities, tooling cores and inserts.

Tooling Application

Complex form on tooling cores can be verified against 3D CAD to ensure the correct geometry of the final moulding or casting. Accurate 3D Scanning can also determine how the tooling core fit within the tool to ensure shut offs and location are correct with other interference fitting components.

Global Compare

Once the 3D Laser Scanning mesh has been accurately aligned to the nominal 3D CAD we can perform various global comparisons against any tolerance setting. The wider the tolerance the more the part will be within specification and the ‘greener’ it will appear. Using the free Nikon Focus Viewer you can set your own tolerance and see exactly where your part is deviating from Nominal CAD.

Dimension Flyouts

Dimensions from the Global Compare can be taken from any point on the part showing the deviation from Nominal CAD to actual part. This is extremely useful when reviewing parts and correcting errors which are often faults of the tooling manufacturing process or shrinkage which is has not been anticipated or calculated correctly.

Tooling Electrodes

We can accurately scan tooling electrodes in any material (usually copper or graphite). Our experience has shown that often electrodes are not manufactured exactly to CAD or the datum face to the component is different than expected. Knowing these errors offsets can be used to ensure the final spark erosion is perfect to CAD. Errors on the electrode will create errors in the hardened dies which are costly to re-work.

3D Laser scanners capture the entire part geometry for inspection or reverse engineering purposes, covering both freeform surfaces and geometric features.

3D Laser scanners are used with a CMM and the resulting digital copy forms the backbone of a powerful digital inspection process that streamlines inspection processes, reduces time to market and cuts development costs.

The LC15Dx Nikon Laser Scanner with a probing error of 2.5µm (0.0001in) mirrors the accuracy expected when using a CMM fitted with a tactile probe. This is arguably the most accurate 3D Laser Scanner on the market for product inspection and 3D Laser Scanning Reports – ideal for ISIR approval.

LC15Dx Closing the gap with tactile probe accuracy

The LC15Dx is a viable alternative to a tactile probe for an increasing number of high precision CMM applications. Manufacturers gain a better appreciation of the dimensional quality of their products without compromising on cycle times. A wider variety of parts, geometry and materials can be measured more effectively, including many parts too small or fragile for a touch probe.

Benefits

Closing the accuracy gap. Thanks to the latest laser scanner technology the LC15Dx is closing the gap between laser scanner and tactile probe accuracy. In tests comparable to ISO 10360-2 MPEP and ISO 10360-5 MPEAL the LC15Dx achieved the accuracy ssociated with using a CMM and tactile probe. However, unlike a tactile probe, the LC15Dx uses non-contact 3D laser triangulation to measure the surface directly and eliminate probe compensation errors. The uncertainty and delay caused when a laser scanner is used before it has reached operating temperature, has been eliminated by a thermal stabilizer mounted inside the scanner body.

Versatile scanning without the hassle

Nikons unique ESP3 technology intelligently adapts the laser settings for each measured point in real-time. A wider range and mix of surface materials, finishes, colors and ansitions can be measured more efficiently without user interaction, manual tuning and part spraying, including small and fragile parts. Unwanted reflections are neutralised by an advanced software filter while changes in ambient light are absorbed by a high grade daylight filter.

Better appreciation of product quality Global Compare provides a complete 3D visualization of dimensional quality. The entire part is checked to the CAD model and any areas of concern are immediately highlighted using Color Mapping.

Further investigation and analysis is possible using fly-outs, sections and a library of Geometric Dimensioning and Tolerancing (GD&T).