No Part? No Problem.

– by David O’Connor, Manager of Technical Services, ShapegrabberDavid O'Connor 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.

Polygon Model

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%.

Refined Polygons

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