A CMM does two things. It measures an object’s physical geometry, and dimension via the touching probe mounted on the machine’s moving axis. It also tests the parts to ascertain that it is the same as the corrected design. The CMM machine works via the following steps.
The part that is to be measured is placed on the CMM’s base. The base is the site of measurement, and it comes from a dense material that is stable and rigid. The stability and rigidity ensure that measurement is accurate irrespective of external forces that can disrupt the operation. Also mounted above the CMM plate is a movable gantry that is equipped with a touching probe. The CMM machine then controls the gantry to direct the probe along the X, Y, and Z axis. By doing so, it replicates every facet of the parts to be measured.
On touching a point of the part to be measured, the probe sends an electrical signal which the computer maps out. By doing so continuously with many points on the part, you will measure the part.
After the measurement, the next stage is the analysis stage, after the probe has captured the part’s X, Y, and Z coordinates. The information obtained is analyzed for the construction of features. The mechanism of action is the same for CMM machines that uses the camera or laser system.
Post time: Jan-19-2022