This preview shows page 1. Sign up to view the full content.
Unformatted text preview: ) Mechanical
di di di f(di) di f(di) di f(di) Predominance of the Gaussian law due to the probe signature. di Optical
Ideal surface Ideal surface with a form defect Real machined surface Mechanically filtered surface
di di di Predominance of machining process signature law. ( Gaussian) Figure 1; Comparison between mechanical and optical probe measurements The recent evolution of the probes, and more exactly the apparition of optical sensors, offers an advisability of exploring the second way. The high resolution of such instrument (10 nm) associated to its low uncertainty (0.2 µ m at three standard Surface Best Fit 193 deviations) permits to get the surface with a high definition. However, the mechanical filtering carried out by the radius of a classical probe does no longer exist for optical sensors. In consequence, all types of geometrical defects are included in the measured coordinates (form, undulation and roughness). They represent the trace, or signature, left by the machining process and are almost fixed by the selection of th...
View Full Document
This note was uploaded on 08/03/2010 for the course DD 1234 taught by Professor Zczxc during the Spring '10 term at Magnolia Bible.
- Spring '10
- The Land