For each test, the stallion is weighted and measured with a caliper. After that, it is scanned with the Shining 3D DS-EX and with our industrial laser scanner.
The gauge block
Its weight is mgauge block=72g.
Its width is 30 mm, precisely 30+0,00013 mm. It is then considered as 30,00 mm.
By using the caliper, the gauge block measures Igauge block caliper=30,00 mm.
It has a metalic and shiny material which might not be captured by the Shining 3D DS-EX because it scans only matt material. So white spray has been used to recover two gauge faces between which distance is 30,00 mm. For the other faces, they were recovered by white film.
This spray is penetrant testing spray, that is to say, it is thin. So it does not add any supplementary thickness on the surface on which it is deposited.
The gauge block is fixed on the rotary table of Shining 3D DS-EX by using the blu tack.
Using the measuring tools of our Deltaface 3D object visualization software, measurements between the two faces are made.
The gauge block is visualized on 3D points cloud. Then Nuage software is used to have a plane on the two targeted faces. This is done by a regression at two planes. After that, the distance between these two planes is calculated by the software. The operation is repeated several times in order to have several measurements.
All measures are equal to 29,97 mm. The Shining 3D DS-EX scanner provides only an error of 0,03 mm or more precisely a 3 hundredth of milimeter.
A sphere has been scanned. It is previously mixed within an acid in order to matify it. This will also reduce its diameter. Consequently, the measure acted by the caliper will be taken as a reference diameter which is dcaliper.
Its weight is mshpere=27g.
And its diameter is dcaliper=18,98 mm.
By using the blu tack, it can be fixed on the plateform. And no movement was apprehended.
The resulted scaned sphere has its diameter equal to d=19,00 mm. So there is only two hundredth of millimeter errors. This is quite a good performance for this technology.