Today we are going to talk about how to reverse engineer a used sheet metal part back to its original flat pattern. This can be challenging at times, since sheet metal parts tend to bend and distort with normal use. Geomagic Design X can assist you in interrogating the geometry of the part, and reverse engineering it back to the original un-warped shape. After scanning the part, you can import the resulting point cloud into Geomagic Design X and clean up scan file. Next, convert the points to a polygonal mesh, and Auto Segment the mesh. By auto-segmenting the mesh, Design X creates regions made up of polygons that have similar curvature values. Thus, it becomes easy to identify and interrogate geometric shapes. You can then use these regions to create and establish your Datums. At this point, you can start reverse engineering your CAD file by tracing over the mesh profiles, and creating real 2D and 3D geometry. Design X keeps a CAD history tree of everything you’re doing. When you have captured enough information from your polygonal mesh, you can then export your work to your CAD software. In CAD, you can complete your design by converting your [...]
In this blog post we will discuss how to improve the quality of your STL to produce better 3D Printed parts. The STL, or Stereo Lithography file format, is widely used for rapid prototyping, 3D Printing, and CAM. An STL file describes the surface geometry of a 3D object by triangulating the vertices on each face of the object. At times though, the STL file may contain errors, small holes, imperfections, and blemishes as shown below. These imperfections may happen if the file was produced by scanning a used or worn part. So how do you go about modifying the STL file, and optimizing it, to produce a better quality 3D Printed part? One solution is to use Geomagic Wrap. It has many powerful easy-to-use tools that enable you to improve the cosmetics of the model by modifying the mesh structure underneath. Let me show you a few of these tools. First, you can easily remove the spikes, or pyramid shaped polygons from the mesh and smooth them out by using the Spike Removal tool. Next, for the sections of the model that are really sloppy, you can simply delete the polygons by using the Manifold Open tool to quickly [...]
The Go!Scan 3D portable handheld scanner delivers high-quality 3D models with reliable measurements. It weighs a little over 2lbs and has an ergonomic grip providing simple ease of use. Similar to Creaform’s HandyScan, it has a USB and power cable which connects directly to your laptop or workstation. Upon setup, typical objects can be scanned in 5 minutes or less. The Go!Scan operates with a white light (LED), which is great for capturing organic shapes in full HD color. This scanner particularly excels at capturing both shapes and textures simultaneously, for example colors, skin tones, fabric and material patterns, and more. White light is also safer for the scanning of humans than laser units. A big benefit of this scanner is that it is self-positioning, meaning it typically doesn’t require targets for setup. Simply point and shoot and you can even move both the part and the scanner during scanning. It has an accuracy of up to 0.1 mm and its file outputs are compatible with all your popular CAD software. Some popular applications include human body and facial scanning, heritage preservation, arts & architecture, computer graphics, and visual effects. But it can also perform applications for design & manufacturing, [...]
There are various types of dial indicators and other manual gauges that can be used to inspect freeform surfaces and determine if they are within tolerance. However, inspecting surface profile tolerances can be quite challenging when you are measuring freeform surfaces. One solution for this scenario is utilizing Verisurf software along with the CMM Master. In Verisurf, you can define the Geometric Characteristic, the Tolerance Zone Size, and add the Datum References called out on the manufacturing drawing. Next, add a surface grid of points on that freeform surface. The probe will scan and analyze each one of these points as it sweeps across the surface. You can control the density of the scan points, as well as the path direction the probe will take. Once you finish programming the probe path, use the CMM Master to inspect it. The probe then follows the automated repeatable path created in the Verisurf software, and quickly scans and collects the data from each grid point. Once this process is done, you can easily produce a First Article Inspection report per AS9102 REV B standard, or output a PDF with the tolerance information. As you can see, inspecting a freeform 3D surface just [...]
A major step forward in metrology software By Joel Pollet The new Geomagic Control X inspection product from 3D Systems offers a computer-aided design (CAD)-like interface and an improved workflow for Geomagic Control users. By including extended product manufacturing information support, users of popular CAD systems can now seamlessly transfer critical inspection information, such as datum features, directly from their CAD product to Control X without the need to re-create it from scratch. By having all of the visibility and filtering tools in easy-to-access toolbars, and with a set of measuring tools always available, the user can easily manipulate the visibility of all screen controls and graphics, take quick measurements, and check critical areas of a design with minimal mouse clicks. Being able to toggle visibility of any of the controls in the enhanced Model Manager using a single click is a great time-saver. The new ribbon interface for Geomagic Control X delivers CAD-like commands and matches the user interface released with Geomagic Design X in 2015. Click here for larger image. The new ribbon interface for Geomagic Control X delivers CAD-like commands and matches the user interface released with Geomagic Design X in 2015. Click The Quick [...]
Let’s explore how to reverse engineer a variable fillet from a polygonal mesh . . . When reverse engineering a physical model, radius values can be measured with various types of radius gauges. It can be somewhat of a challenge if the fillet face is worn, chipped, or distorted. In addition, the task becomes more complex if the fillet is not constant, that is, if it varies along the edge like the mouse shown below. How would you reverse engineer such geometry? A good software product that can be utilized for this type of work is Geomagic Design X. Above, you can see a polygonal mesh superimposed by the CAD model. If you add a fillet to the CAD model and click on Estimate Radius from Mesh you will get an averaged value that you can work off of. You can then set this to the desired value, in this case, a 1-1/2 mm fillet. The real power is shown when you have a variable radius. After you pick the edges involved, simply match the CAD values to the averaged radius values along the mesh. If you want to be more precise, type the values in directly. When satisfied, accept [...]
The Handy Scan 3D 700 is a portable yet versatile metrology solution from Creaform. Through 3D scanning, companies can effectively conduct reverse engineering and inspection operations throughout the product development process. The Handy Scan is a handheld laser scanner optimized to meet the demands of engineers. It features 7 lasers that produce a highly detailed point cloud from physical parts and assemblies. To setup the scanner, simply connect it to a laptop or workstation with a USB and power cable. Next, you stage your part by placing the targets, which will enable the lasers to triangulate and generate the scan data. Surprisingly enough, you can be up and running in just a few minutes. There are several great features about this scanner. For example, it features multi-functional buttons that allow me to do things like adjust the zoom, the shutter, and even initiate my scan without having to go back and forth to your computer. Another benefit is its accuracy and speed. It produces scans with tolerances of up to 30 microns and has one of the highest measurement rates on the market, 480,000 measures/s. This allows for timely scanning in an age where speed is critical to success. Finally, [...]
http://cimquesttv.wistia.com/medias/suk86fsepl?embedType=async&videoFoam=true&videoWidth=640 A portable and ergonomic laser scanner, the Handy Scan has an impressive accuracy and speed for its size. It achieves repeatable results across all work environments and can function in a range of applications such as concept and CAD design, quality control, tooling, and even assembly/production.