Dimensional accuracy of small machined metal parts

Determination of geometrical dimensions and critical surface parameters

  • Bore diameters and concentricity
  • Inclination angles of surface parts
  • Height difference at test diameters
  • Surface roughness and flatness

Measurement with 2.5x Michelson objective and Vertical Scanning Interferometry (VSI) method

  • Customer: Automotive supplier
  • Date: 2014
  • Info: Small machined (turned) metal parts (e.g. valve seat)

Image: Contour analysis on diagonal profile for checking the dimensional accuracy (geometric dimensions, straightness)