Roughness measurement

A.Purpose To measure the surface finish in Ra, Rz, Rt and Rq.

B.Application Testing the machining and grinding surface roughness on flat, round, ID and OD.

C.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 a supporting point results in change of inductive amount of differential induction coils so as to generate analog signal. The signal is proportion to the surface roughness at output end of phase-sensitive rectifier.