Surface Roughness Measurement ：
a. Purpose To measure the surface roughness of finish machining in in Ra, Rz, Rt and Rq.
b. Principle of Contact stylus Profilometer test
Using a small radius diamond tip as a probe, which perpendicular contacts on the test surface and then uniformly slides along the surface by driving mechanism. These up and down displacement via the supporting point to make the magnetic stamen move up and down synchronously and resulting in change of inductive amount of differential induction coils to generate analog signal. The signal is proportion to the surface roughness at output end of phase-sensitive rectifier.
c. Application
Apply on the machining and grinding surface roughness on flat, round, ID and OD for shaft, gear, parts, and equipment.
