– by David O’Connor, Manager of Technical Services, ShapeGrabber
You can accelerate manufacturing production by preparing your 3D inspection program in advance of actual parts being available. In fact, if you have a CAD model you have everything you need. Using the method below, your inspection program can hit the ground running.
|While a CAD model is commonly used as a reference model, it can also stand in for an actual part in the design of an inspection program.||
CAD Model of Part
|Step 1: Using either Geomagic Qualify or Polyworks Inspector software, duplicate your CAD model and convert it into a polygon model. With a few adjustments the new polygon model is an ideal substitute for a sample part.||
|Step 2: Increase the total number of triangles to more closely represent a scanned model. This can be achieved by refining or subdividing the triangles.
Step 3: While not absolutely necessary, it is beneficial to introduce some deviations into your “sample part” to ensure that your inspection program is robust and will properly deal with real-world parts with defects. This is easily achieved by locally deforming the polygon model or simply by scaling the whole model a small amount – say, 1%.
|Step 4: Once you have both original CAD data and new “sample part” data, you can follow your standard inspection programming routine. When a real first part is ready, your inspection program will be ready, too – and you’ll be able to output inspection results in minutes.||
Sample Inspection Results