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In the computer age, there was first computer-aided design, then computer-aided manufacturing, followed by computer-aided engineering. Now it's time for computer-aided inspection. Our world is becoming more complex every day. Designs of manufactured goods in the aerospace, Automotive, and plastic industries have evolved into more complicated, unique shapes, which need to be manufactured to precise tolerances. As an aerospace engineer once stated, if you are traveling at Mach 4 in an aircraft, the shape of the plane had better be precisely matched to the flight-tested cab model it could be a matter of life or death.
How is the 3D coordinate data of complex surfaces measured now? It is usually done with the assistance of a very high-end software analysis package that may cost upwards of $250,000. Now that the smaller manufacturing companies are taking on larger, more complex jobs that require inspection of multiple surfaces they find themselves bottlenecked and providing accurate inspection reports of the manufactured parts or tooling.
The cost of this system is out of reach and a coordinate measuring machine alone is a big investment. However, most of your smaller manufacturers have plunged into the purchase of an inspection device an inspection device is usually a mandatory requirement when taking on a complex job without the assistance of a multiple surface inspection package analyzing the data taken from a complex shape could take weeks. With the power of today's PCs an affordable multiple inspection package called Verisurf has finally been developed by a small manufacturer with a vision of the future for years inspection of complex surfaces as well as simple 2D shapes is needed improving Verisurf software is moving forward with this improvement in technology
Verisurf comes with a complete 3D CAD system which gives the inspectors an advantage that they are not accustomed to this is the ability to see and analyze the 3D cat model that is about to be inspected. Not only can you visualize what you are doing you can also perform tasks that would require a CAD operator to manipulate coordinate systems or even create vectors that are used to program a DCC coordinate measuring machine. Verisurf requires very little training to operate unlike most of the high end packages offered today you will be up and running in no time. Using a very simple menu system that your common sense can drive. Watch as the inspector imports a 3D cab model. It's as easy as putting the disk in the drive, picking the file menu then converters, then IGES and RED, finally pick the file name, now you have the 3D cab model on the screen next you would import the inspected point data. Both the CAD model and the inspection data are now displayed on the screen Verisurf is the next choice on the menu in order to create an inspection report merely plug in the probe radius and tolerance for this model then hit "DO IT" now that the part has been analyzed you can create various types of inspection reports. Let's try one we'll choose the long format notice that the report includes inspection surface data delta and deviation the bottom of the report shows you the percentages of good points bad points and SBC averaging as you will notice 2 points exceed tolerance range with Verisurf we may be able to save this part using best fit observe the two red points at the lower right hand side of the model as they come into tolerance being that best fit utilizes 6 degrees of freedom it can automatically determine the best alignment for the least amount of error verosurf continues to adjust the alignment offset until the errors are reduced to a minimum in the past this part may have been considered scrap aluminum but now thanks to Verisurf it's being shipped to the customer on time let's take a look at the calculated best fit notice the shift is only two ten thousands of an inch in the X axis minus seven ten in the y axis and minus sixteen ten thousands in the Z axis to calculate this by hand would be very time consuming and could become a bottleneck using the CAD features we can dynamically drag and rotate the inspection data to the CAD model putting it as close as possible with the best fit feature we can align the inspection coordinate system with that of the CAD model

#verisurf #cmmprogramming #computeraidedinspection