REVO® valve seat and guide measurement

The measurement of valve seat and guides has traditionally been very challenging, involving time-consuming methods that often do not provide a sufficiently capable measurement.

REVO and Renishaw's Renscan5 technology change this situation dramatically.

Page contentDownloadsCall your local office Contact us online

REVO makes now possible to collect very quickly large amounts of data, from which the analysis parameters for both the valve seat and the valve guide features can be calculated. The method performs exceptionally well in repeatability and reproducibility tests.

Data collection process takes approximately 20 seconds!

Helical scans

REVO valve guide scanning

The measurement process involves two helical scans, one on the valve guide bore and the second over the valve seat area. On the guide a single helical scan is used with a typical pitch of 0.5 mm, at a scanning speed of 150 mm/s.

Adaptive scanning

REVO valve seat and stem scanning

This valve seat scan uses REVO's adaptive scanning capability, which allows a single scan command to cover the areas above and below the critical valve seat surfaces. On the valve seat a single helical scan is used, with a typical pitch of 0.1 mm, at a scanning speed of 500 mm/s.

Data evaluation

The valve seat and guide analysis utility that is embedded in Renishaw's MODUS™ metrology software is used to evaluate the scan data and return the attributes listed below:

  • form error of the valve seat;
  • circularity profile of the seat at any specified height;
  • valve seat width;
  • runout of the seat to the guide bore axis;
  • diameter of the guide;
  • straightness of the guide cylinder;
  • cylindricity of the guide;
  • circularity profile of the guide cylinder at any specified height;
  • form errors of the cones, above and below the valve seat cone.

Please note that Renishaw provides this analysis facility to other metrology software providers that support the REVO system.

Next steps

Contact us online if you require more information or you have a pricing query, or alternatively you may like to speak directly to your local Renishaw office.