Meaning
Metrology procedure employs a physical probe that remains in constant contact with the surface of a workpiece while moving along a defined path. Implementing continuous tactile scanning on an injection moulded part allows for the rapid collection of thousands of data points to define complex geometries or warped surfaces. This method provides a higher resolution of the part shape than discrete point-to-point measurement techniques.
Data Density
Point collection happens at high speeds as the probe head glides across the resin surface. Using continuous tactile scanning enables the detection of small-scale deviations like sink marks or local ripples that would be missed by taking single points. The resulting data cloud is used to create a detailed map of the actual part compared to the original cad model.
Probe Calibration
Measurement accuracy depends on the compensation for the probe tip radius and the deflection of the stylus under constant pressure. During continuous tactile scanning, the system must account for the dynamic forces generated by the movement of the probe arm. If the scanning speed is too high, the probe may bounce, leading to errors in the surface profile.
Measurement Speed
Scanning a complex part with this method reduces the total inspection time.
