Loading patent…
AssigneeMitutoyo Corporation
InventorsKotaro HIRANO, Nobuyuki HAMA, Masanori ARAI, Sadayuki MATSUMIYA
Estimating the term…
A surface roughness measuring unit according to the present invention includes a contact pin unit having a contact pin and a displacement detector, the contact pin being provided so as to project and retract through a through-hole of a skid and scanning and moving along a surface of a work piece, the displacement detector detecting displacement of the contact pin in a direction perpendicular to the work piece surface; a driver moving the contact pin unit forward and backward along the surface of the work piece; and a joint coupling the contact pin unit and the driver to a measurement head holder of a coordinate measuring system. The surface roughness measuring unit further includes a contact detector that detects contact of the skid on the surface of the work piece.
A surface roughness measuring unit comprising:
The surface roughness measuring unit according to clam 1, wherein, when the skid makes contact with the work piece surface, the contact detector detects displacement of the contact pin unit relative to the driver in the direction perpendicular to the work piece surface.
Dependencies are inferred from the claim text.